From 54ee18653c560c8056614ec816a1c12d126a319b Mon Sep 17 00:00:00 2001
From: David Malcolm <dmalcolm@redhat.com>
Date: Tue, 23 Jan 2018 05:41:49 -0500
Subject: [PATCH 30/42] FIXME: WIP on PR c++/83988

---
 pr83988-full.C | 50159 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 pr83988.C      |    14 +
 2 files changed, 50173 insertions(+)
 create mode 100644 pr83988-full.C
 create mode 100644 pr83988.C

diff --git a/pr83988-full.C b/pr83988-full.C
new file mode 100644
index 0000000..f0556db
--- /dev/null
+++ b/pr83988-full.C
@@ -0,0 +1,50159 @@
+       
+
+
+namespace std
+{
+  typedef long unsigned int size_t;
+  typedef long int ptrdiff_t;
+
+
+  typedef decltype(nullptr) nullptr_t;
+
+}
+namespace std
+{
+  inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
+}
+namespace __gnu_cxx
+{
+  inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
+}
+
+
+
+
+
+
+
+typedef long unsigned int size_t;
+
+extern "C" {
+
+
+
+
+
+typedef enum
+{
+  P_ALL,
+  P_PID,
+  P_PGID
+} idtype_t;
+typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__TC__)));
+typedef __float128 _Float128;
+
+
+typedef struct
+  {
+    int quot;
+    int rem;
+  } div_t;
+
+
+
+typedef struct
+  {
+    long int quot;
+    long int rem;
+  } ldiv_t;
+
+
+
+
+
+__extension__ typedef struct
+  {
+    long long int quot;
+    long long int rem;
+  } lldiv_t;
+extern size_t __ctype_get_mb_cur_max (void) throw () ;
+
+
+
+extern double atof (const char *__nptr)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1))) ;
+
+extern int atoi (const char *__nptr)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1))) ;
+
+extern long int atol (const char *__nptr)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1))) ;
+
+
+
+__extension__ extern long long int atoll (const char *__nptr)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1))) ;
+
+
+
+extern double strtod (const char *__restrict __nptr,
+        char **__restrict __endptr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern float strtof (const char *__restrict __nptr,
+       char **__restrict __endptr) throw () __attribute__ ((__nonnull__ (1)));
+
+extern long double strtold (const char *__restrict __nptr,
+       char **__restrict __endptr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+extern _Float128 strtof128 (const char *__restrict __nptr,
+        char **__restrict __endptr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern long int strtol (const char *__restrict __nptr,
+   char **__restrict __endptr, int __base)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+extern unsigned long int strtoul (const char *__restrict __nptr,
+      char **__restrict __endptr, int __base)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+__extension__
+extern long long int strtoq (const char *__restrict __nptr,
+        char **__restrict __endptr, int __base)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+__extension__
+extern unsigned long long int strtouq (const char *__restrict __nptr,
+           char **__restrict __endptr, int __base)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+__extension__
+extern long long int strtoll (const char *__restrict __nptr,
+         char **__restrict __endptr, int __base)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+__extension__
+extern unsigned long long int strtoull (const char *__restrict __nptr,
+     char **__restrict __endptr, int __base)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+extern int strfromd (char *__dest, size_t __size, const char *__format,
+       double __f)
+     throw () __attribute__ ((__nonnull__ (3)));
+
+extern int strfromf (char *__dest, size_t __size, const char *__format,
+       float __f)
+     throw () __attribute__ ((__nonnull__ (3)));
+
+extern int strfroml (char *__dest, size_t __size, const char *__format,
+       long double __f)
+     throw () __attribute__ ((__nonnull__ (3)));
+
+
+
+extern int strfromf128 (char *__dest, size_t __size, const char * __format,
+   _Float128 __f)
+     throw () __attribute__ ((__nonnull__ (3)));
+
+
+
+
+
+
+
+struct __locale_struct
+{
+
+  struct __locale_data *__locales[13];
+
+
+  const unsigned short int *__ctype_b;
+  const int *__ctype_tolower;
+  const int *__ctype_toupper;
+
+
+  const char *__names[13];
+};
+
+typedef struct __locale_struct *__locale_t;
+
+typedef __locale_t locale_t;
+
+extern long int strtol_l (const char *__restrict __nptr,
+     char **__restrict __endptr, int __base,
+     locale_t __loc) throw () __attribute__ ((__nonnull__ (1, 4)));
+
+extern unsigned long int strtoul_l (const char *__restrict __nptr,
+        char **__restrict __endptr,
+        int __base, locale_t __loc)
+     throw () __attribute__ ((__nonnull__ (1, 4)));
+
+__extension__
+extern long long int strtoll_l (const char *__restrict __nptr,
+    char **__restrict __endptr, int __base,
+    locale_t __loc)
+     throw () __attribute__ ((__nonnull__ (1, 4)));
+
+__extension__
+extern unsigned long long int strtoull_l (const char *__restrict __nptr,
+       char **__restrict __endptr,
+       int __base, locale_t __loc)
+     throw () __attribute__ ((__nonnull__ (1, 4)));
+
+extern double strtod_l (const char *__restrict __nptr,
+   char **__restrict __endptr, locale_t __loc)
+     throw () __attribute__ ((__nonnull__ (1, 3)));
+
+extern float strtof_l (const char *__restrict __nptr,
+         char **__restrict __endptr, locale_t __loc)
+     throw () __attribute__ ((__nonnull__ (1, 3)));
+
+extern long double strtold_l (const char *__restrict __nptr,
+         char **__restrict __endptr,
+         locale_t __loc)
+     throw () __attribute__ ((__nonnull__ (1, 3)));
+
+
+extern _Float128 strtof128_l (const char *__restrict __nptr,
+         char **__restrict __endptr,
+         locale_t __loc)
+     throw () __attribute__ ((__nonnull__ (1, 3)));
+extern char *l64a (long int __n) throw () ;
+
+
+extern long int a64l (const char *__s)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1))) ;
+
+
+
+
+extern "C" {
+
+
+
+typedef unsigned char __u_char;
+typedef unsigned short int __u_short;
+typedef unsigned int __u_int;
+typedef unsigned long int __u_long;
+
+
+typedef signed char __int8_t;
+typedef unsigned char __uint8_t;
+typedef signed short int __int16_t;
+typedef unsigned short int __uint16_t;
+typedef signed int __int32_t;
+typedef unsigned int __uint32_t;
+
+typedef signed long int __int64_t;
+typedef unsigned long int __uint64_t;
+
+
+
+
+
+
+
+typedef long int __quad_t;
+typedef unsigned long int __u_quad_t;
+
+
+
+
+
+
+
+typedef long int __intmax_t;
+typedef unsigned long int __uintmax_t;
+
+
+typedef unsigned long int __dev_t;
+typedef unsigned int __uid_t;
+typedef unsigned int __gid_t;
+typedef unsigned long int __ino_t;
+typedef unsigned long int __ino64_t;
+typedef unsigned int __mode_t;
+typedef unsigned long int __nlink_t;
+typedef long int __off_t;
+typedef long int __off64_t;
+typedef int __pid_t;
+typedef struct { int __val[2]; } __fsid_t;
+typedef long int __clock_t;
+typedef unsigned long int __rlim_t;
+typedef unsigned long int __rlim64_t;
+typedef unsigned int __id_t;
+typedef long int __time_t;
+typedef unsigned int __useconds_t;
+typedef long int __suseconds_t;
+
+typedef int __daddr_t;
+typedef int __key_t;
+
+
+typedef int __clockid_t;
+
+
+typedef void * __timer_t;
+
+
+typedef long int __blksize_t;
+
+
+
+
+typedef long int __blkcnt_t;
+typedef long int __blkcnt64_t;
+
+
+typedef unsigned long int __fsblkcnt_t;
+typedef unsigned long int __fsblkcnt64_t;
+
+
+typedef unsigned long int __fsfilcnt_t;
+typedef unsigned long int __fsfilcnt64_t;
+
+
+typedef long int __fsword_t;
+
+typedef long int __ssize_t;
+
+
+typedef long int __syscall_slong_t;
+
+typedef unsigned long int __syscall_ulong_t;
+
+
+
+typedef __off64_t __loff_t;
+typedef __quad_t *__qaddr_t;
+typedef char *__caddr_t;
+
+
+typedef long int __intptr_t;
+
+
+typedef unsigned int __socklen_t;
+
+
+
+
+typedef int __sig_atomic_t;
+
+
+
+typedef __u_char u_char;
+typedef __u_short u_short;
+typedef __u_int u_int;
+typedef __u_long u_long;
+typedef __quad_t quad_t;
+typedef __u_quad_t u_quad_t;
+typedef __fsid_t fsid_t;
+
+
+
+
+typedef __loff_t loff_t;
+
+
+
+typedef __ino_t ino_t;
+
+
+
+
+
+
+typedef __ino64_t ino64_t;
+
+
+
+
+typedef __dev_t dev_t;
+
+
+
+
+typedef __gid_t gid_t;
+
+
+
+
+typedef __mode_t mode_t;
+
+
+
+
+typedef __nlink_t nlink_t;
+
+
+
+
+typedef __uid_t uid_t;
+
+
+
+
+
+typedef __off_t off_t;
+
+
+
+
+
+
+typedef __off64_t off64_t;
+
+
+
+
+typedef __pid_t pid_t;
+
+
+
+
+
+typedef __id_t id_t;
+
+
+
+
+typedef __ssize_t ssize_t;
+
+
+
+
+
+typedef __daddr_t daddr_t;
+typedef __caddr_t caddr_t;
+
+
+
+
+
+typedef __key_t key_t;
+
+
+
+
+
+
+
+
+
+
+typedef __clock_t clock_t;
+
+
+
+
+
+
+
+typedef __clockid_t clockid_t;
+
+
+
+
+
+
+typedef __time_t time_t;
+
+
+
+
+
+
+typedef __timer_t timer_t;
+
+
+
+typedef __useconds_t useconds_t;
+
+
+
+typedef __suseconds_t suseconds_t;
+
+
+
+
+
+
+
+
+typedef unsigned long int ulong;
+typedef unsigned short int ushort;
+typedef unsigned int uint;
+
+
+
+
+typedef __int8_t int8_t;
+typedef __int16_t int16_t;
+typedef __int32_t int32_t;
+typedef __int64_t int64_t;
+typedef unsigned int u_int8_t __attribute__ ((__mode__ (__QI__)));
+typedef unsigned int u_int16_t __attribute__ ((__mode__ (__HI__)));
+typedef unsigned int u_int32_t __attribute__ ((__mode__ (__SI__)));
+typedef unsigned int u_int64_t __attribute__ ((__mode__ (__DI__)));
+
+typedef int register_t __attribute__ ((__mode__ (__word__)));
+
+
+
+
+
+
+static __inline unsigned int
+__bswap_32 (unsigned int __bsx)
+{
+  return __builtin_bswap32 (__bsx);
+}
+static __inline __uint64_t
+__bswap_64 (__uint64_t __bsx)
+{
+  return __builtin_bswap64 (__bsx);
+}
+static __inline __uint16_t
+__uint16_identity (__uint16_t __x)
+{
+  return __x;
+}
+
+static __inline __uint32_t
+__uint32_identity (__uint32_t __x)
+{
+  return __x;
+}
+
+static __inline __uint64_t
+__uint64_identity (__uint64_t __x)
+{
+  return __x;
+}
+
+
+
+
+
+
+
+
+
+
+
+typedef struct
+{
+  unsigned long int __val[(1024 / (8 * sizeof (unsigned long int)))];
+} __sigset_t;
+
+
+typedef __sigset_t sigset_t;
+
+
+
+
+
+
+
+
+
+
+struct timeval
+{
+  __time_t tv_sec;
+  __suseconds_t tv_usec;
+};
+
+
+
+
+
+
+
+
+struct timespec
+{
+  __time_t tv_sec;
+  __syscall_slong_t tv_nsec;
+};
+typedef long int __fd_mask;
+typedef struct
+  {
+
+
+
+    __fd_mask fds_bits[1024 / (8 * (int) sizeof (__fd_mask))];
+
+
+
+
+
+  } fd_set;
+
+
+
+
+
+
+typedef __fd_mask fd_mask;
+extern "C" {
+extern int select (int __nfds, fd_set *__restrict __readfds,
+     fd_set *__restrict __writefds,
+     fd_set *__restrict __exceptfds,
+     struct timeval *__restrict __timeout);
+extern int pselect (int __nfds, fd_set *__restrict __readfds,
+      fd_set *__restrict __writefds,
+      fd_set *__restrict __exceptfds,
+      const struct timespec *__restrict __timeout,
+      const __sigset_t *__restrict __sigmask);
+}
+
+
+
+
+
+
+
+extern "C" {
+
+extern unsigned int gnu_dev_major (__dev_t __dev) throw () __attribute__ ((__const__));
+extern unsigned int gnu_dev_minor (__dev_t __dev) throw () __attribute__ ((__const__));
+extern __dev_t gnu_dev_makedev (unsigned int __major, unsigned int __minor) throw () __attribute__ ((__const__));
+}
+
+
+
+
+
+
+typedef __blksize_t blksize_t;
+
+
+
+
+
+
+typedef __blkcnt_t blkcnt_t;
+
+
+
+typedef __fsblkcnt_t fsblkcnt_t;
+
+
+
+typedef __fsfilcnt_t fsfilcnt_t;
+typedef __blkcnt64_t blkcnt64_t;
+typedef __fsblkcnt64_t fsblkcnt64_t;
+typedef __fsfilcnt64_t fsfilcnt64_t;
+
+
+
+
+
+struct __pthread_rwlock_arch_t
+{
+  unsigned int __readers;
+  unsigned int __writers;
+  unsigned int __wrphase_futex;
+  unsigned int __writers_futex;
+  unsigned int __pad3;
+  unsigned int __pad4;
+
+  int __cur_writer;
+  int __shared;
+  signed char __rwelision;
+
+
+
+
+  unsigned char __pad1[7];
+
+
+  unsigned long int __pad2;
+
+
+  unsigned int __flags;
+};
+
+
+
+
+typedef struct __pthread_internal_list
+{
+  struct __pthread_internal_list *__prev;
+  struct __pthread_internal_list *__next;
+} __pthread_list_t;
+struct __pthread_mutex_s
+{
+  int __lock ;
+  unsigned int __count;
+  int __owner;
+
+  unsigned int __nusers;
+
+
+
+  int __kind;
+ 
+
+  short __spins; short __elision;
+  __pthread_list_t __list;
+ 
+};
+
+
+
+
+struct __pthread_cond_s
+{
+  __extension__ union
+  {
+    __extension__ unsigned long long int __wseq;
+    struct
+    {
+      unsigned int __low;
+      unsigned int __high;
+    } __wseq32;
+  };
+  __extension__ union
+  {
+    __extension__ unsigned long long int __g1_start;
+    struct
+    {
+      unsigned int __low;
+      unsigned int __high;
+    } __g1_start32;
+  };
+  unsigned int __g_refs[2] ;
+  unsigned int __g_size[2];
+  unsigned int __g1_orig_size;
+  unsigned int __wrefs;
+  unsigned int __g_signals[2];
+};
+
+
+
+typedef unsigned long int pthread_t;
+
+
+
+
+typedef union
+{
+  char __size[4];
+  int __align;
+} pthread_mutexattr_t;
+
+
+
+
+typedef union
+{
+  char __size[4];
+  int __align;
+} pthread_condattr_t;
+
+
+
+typedef unsigned int pthread_key_t;
+
+
+
+typedef int pthread_once_t;
+
+
+union pthread_attr_t
+{
+  char __size[56];
+  long int __align;
+};
+
+typedef union pthread_attr_t pthread_attr_t;
+
+
+
+
+typedef union
+{
+  struct __pthread_mutex_s __data;
+  char __size[40];
+  long int __align;
+} pthread_mutex_t;
+
+
+typedef union
+{
+  struct __pthread_cond_s __data;
+  char __size[48];
+  __extension__ long long int __align;
+} pthread_cond_t;
+
+
+
+
+
+typedef union
+{
+  struct __pthread_rwlock_arch_t __data;
+  char __size[56];
+  long int __align;
+} pthread_rwlock_t;
+
+typedef union
+{
+  char __size[8];
+  long int __align;
+} pthread_rwlockattr_t;
+
+
+
+
+
+typedef volatile int pthread_spinlock_t;
+
+
+
+
+typedef union
+{
+  char __size[32];
+  long int __align;
+} pthread_barrier_t;
+
+typedef union
+{
+  char __size[4];
+  int __align;
+} pthread_barrierattr_t;
+
+
+}
+
+
+
+
+
+
+extern long int random (void) throw ();
+
+
+extern void srandom (unsigned int __seed) throw ();
+
+
+
+
+
+extern char *initstate (unsigned int __seed, char *__statebuf,
+   size_t __statelen) throw () __attribute__ ((__nonnull__ (2)));
+
+
+
+extern char *setstate (char *__statebuf) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+
+struct random_data
+  {
+    int32_t *fptr;
+    int32_t *rptr;
+    int32_t *state;
+    int rand_type;
+    int rand_deg;
+    int rand_sep;
+    int32_t *end_ptr;
+  };
+
+extern int random_r (struct random_data *__restrict __buf,
+       int32_t *__restrict __result) throw () __attribute__ ((__nonnull__ (1, 2)));
+
+extern int srandom_r (unsigned int __seed, struct random_data *__buf)
+     throw () __attribute__ ((__nonnull__ (2)));
+
+extern int initstate_r (unsigned int __seed, char *__restrict __statebuf,
+   size_t __statelen,
+   struct random_data *__restrict __buf)
+     throw () __attribute__ ((__nonnull__ (2, 4)));
+
+extern int setstate_r (char *__restrict __statebuf,
+         struct random_data *__restrict __buf)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+
+extern int rand (void) throw ();
+
+extern void srand (unsigned int __seed) throw ();
+
+
+
+extern int rand_r (unsigned int *__seed) throw ();
+
+
+
+
+
+
+
+extern double drand48 (void) throw ();
+extern double erand48 (unsigned short int __xsubi[3]) throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern long int lrand48 (void) throw ();
+extern long int nrand48 (unsigned short int __xsubi[3])
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern long int mrand48 (void) throw ();
+extern long int jrand48 (unsigned short int __xsubi[3])
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern void srand48 (long int __seedval) throw ();
+extern unsigned short int *seed48 (unsigned short int __seed16v[3])
+     throw () __attribute__ ((__nonnull__ (1)));
+extern void lcong48 (unsigned short int __param[7]) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+struct drand48_data
+  {
+    unsigned short int __x[3];
+    unsigned short int __old_x[3];
+    unsigned short int __c;
+    unsigned short int __init;
+    __extension__ unsigned long long int __a;
+
+  };
+
+
+extern int drand48_r (struct drand48_data *__restrict __buffer,
+        double *__restrict __result) throw () __attribute__ ((__nonnull__ (1, 2)));
+extern int erand48_r (unsigned short int __xsubi[3],
+        struct drand48_data *__restrict __buffer,
+        double *__restrict __result) throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int lrand48_r (struct drand48_data *__restrict __buffer,
+        long int *__restrict __result)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+extern int nrand48_r (unsigned short int __xsubi[3],
+        struct drand48_data *__restrict __buffer,
+        long int *__restrict __result)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int mrand48_r (struct drand48_data *__restrict __buffer,
+        long int *__restrict __result)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+extern int jrand48_r (unsigned short int __xsubi[3],
+        struct drand48_data *__restrict __buffer,
+        long int *__restrict __result)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int srand48_r (long int __seedval, struct drand48_data *__buffer)
+     throw () __attribute__ ((__nonnull__ (2)));
+
+extern int seed48_r (unsigned short int __seed16v[3],
+       struct drand48_data *__buffer) throw () __attribute__ ((__nonnull__ (1, 2)));
+
+extern int lcong48_r (unsigned short int __param[7],
+        struct drand48_data *__buffer)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+extern void *malloc (size_t __size) throw () __attribute__ ((__malloc__)) ;
+
+extern void *calloc (size_t __nmemb, size_t __size)
+     throw () __attribute__ ((__malloc__)) ;
+
+
+
+
+
+
+extern void *realloc (void *__ptr, size_t __size)
+     throw () __attribute__ ((__warn_unused_result__));
+
+
+
+
+
+
+
+extern void *reallocarray (void *__ptr, size_t __nmemb, size_t __size)
+     throw () __attribute__ ((__warn_unused_result__));
+
+
+
+extern void free (void *__ptr) throw ();
+
+
+
+extern "C" {
+
+
+
+
+
+extern void *alloca (size_t __size) throw ();
+
+
+
+
+
+}
+
+
+
+
+
+extern void *valloc (size_t __size) throw () __attribute__ ((__malloc__)) ;
+
+
+
+
+extern int posix_memalign (void **__memptr, size_t __alignment, size_t __size)
+     throw () __attribute__ ((__nonnull__ (1))) ;
+
+
+
+
+extern void *aligned_alloc (size_t __alignment, size_t __size)
+     throw () __attribute__ ((__malloc__)) __attribute__ ((__alloc_size__ (2))) ;
+
+
+
+extern void abort (void) throw () __attribute__ ((__noreturn__));
+
+
+
+extern int atexit (void (*__func) (void)) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+extern "C++" int at_quick_exit (void (*__func) (void))
+     throw () __asm ("at_quick_exit") __attribute__ ((__nonnull__ (1)));
+extern int on_exit (void (*__func) (int __status, void *__arg), void *__arg)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+extern void exit (int __status) throw () __attribute__ ((__noreturn__));
+
+
+
+
+
+extern void quick_exit (int __status) throw () __attribute__ ((__noreturn__));
+
+
+
+
+
+extern void _Exit (int __status) throw () __attribute__ ((__noreturn__));
+
+
+
+
+extern char *getenv (const char *__name) throw () __attribute__ ((__nonnull__ (1))) ;
+
+
+
+
+extern char *secure_getenv (const char *__name)
+     throw () __attribute__ ((__nonnull__ (1))) ;
+
+
+
+
+
+
+extern int putenv (char *__string) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+extern int setenv (const char *__name, const char *__value, int __replace)
+     throw () __attribute__ ((__nonnull__ (2)));
+
+
+extern int unsetenv (const char *__name) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+extern int clearenv (void) throw ();
+extern char *mktemp (char *__template) throw () __attribute__ ((__nonnull__ (1)));
+extern int mkstemp (char *__template) __attribute__ ((__nonnull__ (1))) ;
+extern int mkstemp64 (char *__template) __attribute__ ((__nonnull__ (1))) ;
+extern int mkstemps (char *__template, int __suffixlen) __attribute__ ((__nonnull__ (1))) ;
+extern int mkstemps64 (char *__template, int __suffixlen)
+     __attribute__ ((__nonnull__ (1))) ;
+extern char *mkdtemp (char *__template) throw () __attribute__ ((__nonnull__ (1))) ;
+extern int mkostemp (char *__template, int __flags) __attribute__ ((__nonnull__ (1))) ;
+extern int mkostemp64 (char *__template, int __flags) __attribute__ ((__nonnull__ (1))) ;
+extern int mkostemps (char *__template, int __suffixlen, int __flags)
+     __attribute__ ((__nonnull__ (1))) ;
+extern int mkostemps64 (char *__template, int __suffixlen, int __flags)
+     __attribute__ ((__nonnull__ (1))) ;
+extern int system (const char *__command) ;
+
+
+
+
+
+extern char *canonicalize_file_name (const char *__name)
+     throw () __attribute__ ((__nonnull__ (1))) ;
+extern char *realpath (const char *__restrict __name,
+         char *__restrict __resolved) throw () ;
+
+
+
+
+
+
+typedef int (*__compar_fn_t) (const void *, const void *);
+
+
+typedef __compar_fn_t comparison_fn_t;
+
+
+
+typedef int (*__compar_d_fn_t) (const void *, const void *, void *);
+
+
+
+
+extern void *bsearch (const void *__key, const void *__base,
+        size_t __nmemb, size_t __size, __compar_fn_t __compar)
+     __attribute__ ((__nonnull__ (1, 2, 5))) ;
+
+
+
+
+
+
+
+extern void qsort (void *__base, size_t __nmemb, size_t __size,
+     __compar_fn_t __compar) __attribute__ ((__nonnull__ (1, 4)));
+
+extern void qsort_r (void *__base, size_t __nmemb, size_t __size,
+       __compar_d_fn_t __compar, void *__arg)
+  __attribute__ ((__nonnull__ (1, 4)));
+
+
+
+
+extern int abs (int __x) throw () __attribute__ ((__const__)) ;
+extern long int labs (long int __x) throw () __attribute__ ((__const__)) ;
+
+
+__extension__ extern long long int llabs (long long int __x)
+     throw () __attribute__ ((__const__)) ;
+
+
+
+
+
+
+extern div_t div (int __numer, int __denom)
+     throw () __attribute__ ((__const__)) ;
+extern ldiv_t ldiv (long int __numer, long int __denom)
+     throw () __attribute__ ((__const__)) ;
+
+
+__extension__ extern lldiv_t lldiv (long long int __numer,
+        long long int __denom)
+     throw () __attribute__ ((__const__)) ;
+extern char *ecvt (double __value, int __ndigit, int *__restrict __decpt,
+     int *__restrict __sign) throw () __attribute__ ((__nonnull__ (3, 4))) ;
+
+
+
+
+extern char *fcvt (double __value, int __ndigit, int *__restrict __decpt,
+     int *__restrict __sign) throw () __attribute__ ((__nonnull__ (3, 4))) ;
+
+
+
+
+extern char *gcvt (double __value, int __ndigit, char *__buf)
+     throw () __attribute__ ((__nonnull__ (3))) ;
+
+
+
+
+extern char *qecvt (long double __value, int __ndigit,
+      int *__restrict __decpt, int *__restrict __sign)
+     throw () __attribute__ ((__nonnull__ (3, 4))) ;
+extern char *qfcvt (long double __value, int __ndigit,
+      int *__restrict __decpt, int *__restrict __sign)
+     throw () __attribute__ ((__nonnull__ (3, 4))) ;
+extern char *qgcvt (long double __value, int __ndigit, char *__buf)
+     throw () __attribute__ ((__nonnull__ (3))) ;
+
+
+
+
+extern int ecvt_r (double __value, int __ndigit, int *__restrict __decpt,
+     int *__restrict __sign, char *__restrict __buf,
+     size_t __len) throw () __attribute__ ((__nonnull__ (3, 4, 5)));
+extern int fcvt_r (double __value, int __ndigit, int *__restrict __decpt,
+     int *__restrict __sign, char *__restrict __buf,
+     size_t __len) throw () __attribute__ ((__nonnull__ (3, 4, 5)));
+
+extern int qecvt_r (long double __value, int __ndigit,
+      int *__restrict __decpt, int *__restrict __sign,
+      char *__restrict __buf, size_t __len)
+     throw () __attribute__ ((__nonnull__ (3, 4, 5)));
+extern int qfcvt_r (long double __value, int __ndigit,
+      int *__restrict __decpt, int *__restrict __sign,
+      char *__restrict __buf, size_t __len)
+     throw () __attribute__ ((__nonnull__ (3, 4, 5)));
+
+
+
+
+
+extern int mblen (const char *__s, size_t __n) throw ();
+
+
+extern int mbtowc (wchar_t *__restrict __pwc,
+     const char *__restrict __s, size_t __n) throw ();
+
+
+extern int wctomb (char *__s, wchar_t __wchar) throw ();
+
+
+
+extern size_t mbstowcs (wchar_t *__restrict __pwcs,
+   const char *__restrict __s, size_t __n) throw ();
+
+extern size_t wcstombs (char *__restrict __s,
+   const wchar_t *__restrict __pwcs, size_t __n)
+     throw ();
+
+
+
+
+
+
+
+extern int rpmatch (const char *__response) throw () __attribute__ ((__nonnull__ (1))) ;
+extern int getsubopt (char **__restrict __optionp,
+        char *const *__restrict __tokens,
+        char **__restrict __valuep)
+     throw () __attribute__ ((__nonnull__ (1, 2, 3))) ;
+
+
+
+
+
+extern void setkey (const char *__key) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+
+extern int posix_openpt (int __oflag) ;
+
+
+
+
+
+
+
+extern int grantpt (int __fd) throw ();
+
+
+
+extern int unlockpt (int __fd) throw ();
+
+
+
+
+extern char *ptsname (int __fd) throw () ;
+
+
+
+
+
+
+extern int ptsname_r (int __fd, char *__buf, size_t __buflen)
+     throw () __attribute__ ((__nonnull__ (2)));
+
+
+extern int getpt (void);
+
+
+
+
+
+
+extern int getloadavg (double __loadavg[], int __nelem)
+     throw () __attribute__ ((__nonnull__ (1)));
+}
+
+       
+extern "C++"
+{
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  using ::abs;
+
+
+  inline long
+  abs(long __i) { return __builtin_labs(__i); }
+
+
+
+  inline long long
+  abs(long long __x) { return __builtin_llabs (__x); }
+
+
+
+
+
+
+
+  inline constexpr double
+  abs(double __x)
+  { return __builtin_fabs(__x); }
+
+  inline constexpr float
+  abs(float __x)
+  { return __builtin_fabsf(__x); }
+
+  inline constexpr long double
+  abs(long double __x)
+  { return __builtin_fabsl(__x); }
+
+
+
+  inline constexpr __int128
+  abs(__int128 __x) { return __x >= 0 ? __x : -__x; }
+  inline constexpr
+  __float128
+  abs(__float128 __x)
+  { return __x < 0 ? -__x : __x; }
+
+
+
+}
+}
+extern "C++"
+{
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  using ::div_t;
+  using ::ldiv_t;
+
+  using ::abort;
+  using ::atexit;
+
+
+  using ::at_quick_exit;
+
+
+  using ::atof;
+  using ::atoi;
+  using ::atol;
+  using ::bsearch;
+  using ::calloc;
+  using ::div;
+  using ::exit;
+  using ::free;
+  using ::getenv;
+  using ::labs;
+  using ::ldiv;
+  using ::malloc;
+
+  using ::mblen;
+  using ::mbstowcs;
+  using ::mbtowc;
+
+  using ::qsort;
+
+
+  using ::quick_exit;
+
+
+  using ::rand;
+  using ::realloc;
+  using ::srand;
+  using ::strtod;
+  using ::strtol;
+  using ::strtoul;
+  using ::system;
+
+  using ::wcstombs;
+  using ::wctomb;
+
+
+
+  inline ldiv_t
+  div(long __i, long __j) { return ldiv(__i, __j); }
+
+
+
+
+}
+namespace __gnu_cxx __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+  using ::lldiv_t;
+
+
+
+
+
+  using ::_Exit;
+
+
+
+  using ::llabs;
+
+  inline lldiv_t
+  div(long long __n, long long __d)
+  { lldiv_t __q; __q.quot = __n / __d; __q.rem = __n % __d; return __q; }
+
+  using ::lldiv;
+  using ::atoll;
+  using ::strtoll;
+  using ::strtoull;
+
+  using ::strtof;
+  using ::strtold;
+
+
+}
+
+namespace std
+{
+
+  using ::__gnu_cxx::lldiv_t;
+
+  using ::__gnu_cxx::_Exit;
+
+  using ::__gnu_cxx::llabs;
+  using ::__gnu_cxx::div;
+  using ::__gnu_cxx::lldiv;
+
+  using ::__gnu_cxx::atoll;
+  using ::__gnu_cxx::strtof;
+  using ::__gnu_cxx::strtoll;
+  using ::__gnu_cxx::strtoull;
+  using ::__gnu_cxx::strtold;
+}
+
+
+
+}
+       
+
+
+
+extern "C" {
+
+
+
+
+extern void *memcpy (void *__restrict __dest, const void *__restrict __src,
+       size_t __n) throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern void *memmove (void *__dest, const void *__src, size_t __n)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+
+extern void *memccpy (void *__restrict __dest, const void *__restrict __src,
+        int __c, size_t __n)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+extern void *memset (void *__s, int __c, size_t __n) throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int memcmp (const void *__s1, const void *__s2, size_t __n)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+extern "C++"
+{
+extern void *memchr (void *__s, int __c, size_t __n)
+      throw () __asm ("memchr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+extern const void *memchr (const void *__s, int __c, size_t __n)
+      throw () __asm ("memchr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+}
+extern "C++" void *rawmemchr (void *__s, int __c)
+     throw () __asm ("rawmemchr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+extern "C++" const void *rawmemchr (const void *__s, int __c)
+     throw () __asm ("rawmemchr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+
+extern "C++" void *memrchr (void *__s, int __c, size_t __n)
+      throw () __asm ("memrchr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+extern "C++" const void *memrchr (const void *__s, int __c, size_t __n)
+      throw () __asm ("memrchr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+extern char *strcpy (char *__restrict __dest, const char *__restrict __src)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+extern char *strncpy (char *__restrict __dest,
+        const char *__restrict __src, size_t __n)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern char *strcat (char *__restrict __dest, const char *__restrict __src)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+extern char *strncat (char *__restrict __dest, const char *__restrict __src,
+        size_t __n) throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int strcmp (const char *__s1, const char *__s2)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+
+extern int strncmp (const char *__s1, const char *__s2, size_t __n)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int strcoll (const char *__s1, const char *__s2)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+
+extern size_t strxfrm (char *__restrict __dest,
+         const char *__restrict __src, size_t __n)
+     throw () __attribute__ ((__nonnull__ (2)));
+
+
+
+
+
+
+extern int strcoll_l (const char *__s1, const char *__s2, locale_t __l)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2, 3)));
+
+
+extern size_t strxfrm_l (char *__dest, const char *__src, size_t __n,
+    locale_t __l) throw () __attribute__ ((__nonnull__ (2, 4)));
+
+
+
+
+
+extern char *strdup (const char *__s)
+     throw () __attribute__ ((__malloc__)) __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+extern char *strndup (const char *__string, size_t __n)
+     throw () __attribute__ ((__malloc__)) __attribute__ ((__nonnull__ (1)));
+extern "C++"
+{
+extern char *strchr (char *__s, int __c)
+     throw () __asm ("strchr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+extern const char *strchr (const char *__s, int __c)
+     throw () __asm ("strchr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+}
+
+
+
+
+
+
+extern "C++"
+{
+extern char *strrchr (char *__s, int __c)
+     throw () __asm ("strrchr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+extern const char *strrchr (const char *__s, int __c)
+     throw () __asm ("strrchr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+}
+extern "C++" char *strchrnul (char *__s, int __c)
+     throw () __asm ("strchrnul") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+extern "C++" const char *strchrnul (const char *__s, int __c)
+     throw () __asm ("strchrnul") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+extern size_t strcspn (const char *__s, const char *__reject)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern size_t strspn (const char *__s, const char *__accept)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern "C++"
+{
+extern char *strpbrk (char *__s, const char *__accept)
+     throw () __asm ("strpbrk") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+extern const char *strpbrk (const char *__s, const char *__accept)
+     throw () __asm ("strpbrk") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+}
+
+
+
+
+
+
+extern "C++"
+{
+extern char *strstr (char *__haystack, const char *__needle)
+     throw () __asm ("strstr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+extern const char *strstr (const char *__haystack, const char *__needle)
+     throw () __asm ("strstr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+}
+
+
+
+
+
+
+
+extern char *strtok (char *__restrict __s, const char *__restrict __delim)
+     throw () __attribute__ ((__nonnull__ (2)));
+
+
+
+extern char *__strtok_r (char *__restrict __s,
+    const char *__restrict __delim,
+    char **__restrict __save_ptr)
+     throw () __attribute__ ((__nonnull__ (2, 3)));
+
+extern char *strtok_r (char *__restrict __s, const char *__restrict __delim,
+         char **__restrict __save_ptr)
+     throw () __attribute__ ((__nonnull__ (2, 3)));
+
+
+
+
+
+extern "C++" char *strcasestr (char *__haystack, const char *__needle)
+     throw () __asm ("strcasestr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+extern "C++" const char *strcasestr (const char *__haystack,
+         const char *__needle)
+     throw () __asm ("strcasestr") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+extern void *memmem (const void *__haystack, size_t __haystacklen,
+       const void *__needle, size_t __needlelen)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 3)));
+
+
+
+extern void *__mempcpy (void *__restrict __dest,
+   const void *__restrict __src, size_t __n)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+extern void *mempcpy (void *__restrict __dest,
+        const void *__restrict __src, size_t __n)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+extern size_t strlen (const char *__s)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+
+
+
+
+extern size_t strnlen (const char *__string, size_t __maxlen)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+
+
+
+
+extern char *strerror (int __errnum) throw ();
+extern char *strerror_r (int __errnum, char *__buf, size_t __buflen)
+     throw () __attribute__ ((__nonnull__ (2))) ;
+
+
+
+
+
+extern char *strerror_l (int __errnum, locale_t __l) throw ();
+
+
+
+
+
+
+
+
+
+extern "C" {
+
+
+
+extern int bcmp (const void *__s1, const void *__s2, size_t __n)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern void bcopy (const void *__src, void *__dest, size_t __n)
+  throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern void bzero (void *__s, size_t __n) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern "C++"
+{
+extern char *index (char *__s, int __c)
+     throw () __asm ("index") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+extern const char *index (const char *__s, int __c)
+     throw () __asm ("index") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+}
+
+
+
+
+
+
+
+extern "C++"
+{
+extern char *rindex (char *__s, int __c)
+     throw () __asm ("rindex") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+extern const char *rindex (const char *__s, int __c)
+     throw () __asm ("rindex") __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
+}
+extern int ffs (int __i) throw () __attribute__ ((__const__));
+
+
+
+
+
+extern int ffsl (long int __l) throw () __attribute__ ((__const__));
+__extension__ extern int ffsll (long long int __ll)
+     throw () __attribute__ ((__const__));
+
+
+
+extern int strcasecmp (const char *__s1, const char *__s2)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int strncasecmp (const char *__s1, const char *__s2, size_t __n)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+
+
+extern int strcasecmp_l (const char *__s1, const char *__s2, locale_t __loc)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2, 3)));
+
+
+
+extern int strncasecmp_l (const char *__s1, const char *__s2,
+     size_t __n, locale_t __loc)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2, 4)));
+
+
+}
+
+
+
+extern void explicit_bzero (void *__s, size_t __n) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern char *strsep (char **__restrict __stringp,
+       const char *__restrict __delim)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+extern char *strsignal (int __sig) throw ();
+
+
+extern char *__stpcpy (char *__restrict __dest, const char *__restrict __src)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+extern char *stpcpy (char *__restrict __dest, const char *__restrict __src)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+extern char *__stpncpy (char *__restrict __dest,
+   const char *__restrict __src, size_t __n)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+extern char *stpncpy (char *__restrict __dest,
+        const char *__restrict __src, size_t __n)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+extern int strverscmp (const char *__s1, const char *__s2)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern char *strfry (char *__string) throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern void *memfrob (void *__s, size_t __n) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+
+extern "C++" char *basename (char *__filename)
+     throw () __asm ("basename") __attribute__ ((__nonnull__ (1)));
+extern "C++" const char *basename (const char *__filename)
+     throw () __asm ("basename") __attribute__ ((__nonnull__ (1)));
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  using ::memchr;
+  using ::memcmp;
+  using ::memcpy;
+  using ::memmove;
+  using ::memset;
+  using ::strcat;
+  using ::strcmp;
+  using ::strcoll;
+  using ::strcpy;
+  using ::strcspn;
+  using ::strerror;
+  using ::strlen;
+  using ::strncat;
+  using ::strncmp;
+  using ::strncpy;
+  using ::strspn;
+  using ::strtok;
+  using ::strxfrm;
+  using ::strchr;
+  using ::strpbrk;
+  using ::strrchr;
+  using ::strstr;
+
+}
+
+
+
+
+
+
+
+
+typedef __uint8_t uint8_t;
+typedef __uint16_t uint16_t;
+typedef __uint32_t uint32_t;
+typedef __uint64_t uint64_t;
+
+
+
+
+
+typedef signed char int_least8_t;
+typedef short int int_least16_t;
+typedef int int_least32_t;
+
+typedef long int int_least64_t;
+
+
+
+
+
+
+typedef unsigned char uint_least8_t;
+typedef unsigned short int uint_least16_t;
+typedef unsigned int uint_least32_t;
+
+typedef unsigned long int uint_least64_t;
+typedef signed char int_fast8_t;
+
+typedef long int int_fast16_t;
+typedef long int int_fast32_t;
+typedef long int int_fast64_t;
+typedef unsigned char uint_fast8_t;
+
+typedef unsigned long int uint_fast16_t;
+typedef unsigned long int uint_fast32_t;
+typedef unsigned long int uint_fast64_t;
+typedef long int intptr_t;
+
+
+typedef unsigned long int uintptr_t;
+typedef __intmax_t intmax_t;
+typedef __uintmax_t uintmax_t;
+extern "C" {
+
+
+
+
+typedef struct
+  {
+    long int quot;
+    long int rem;
+  } imaxdiv_t;
+extern intmax_t imaxabs (intmax_t __n) throw () __attribute__ ((__const__));
+
+
+extern imaxdiv_t imaxdiv (intmax_t __numer, intmax_t __denom)
+      throw () __attribute__ ((__const__));
+
+
+extern intmax_t strtoimax (const char *__restrict __nptr,
+      char **__restrict __endptr, int __base) throw ();
+
+
+extern uintmax_t strtoumax (const char *__restrict __nptr,
+       char ** __restrict __endptr, int __base) throw ();
+
+
+extern intmax_t wcstoimax (const wchar_t *__restrict __nptr,
+      wchar_t **__restrict __endptr, int __base)
+     throw ();
+
+
+extern uintmax_t wcstoumax (const wchar_t *__restrict __nptr,
+       wchar_t ** __restrict __endptr, int __base)
+     throw ();
+}
+
+namespace rapidjson {
+
+
+
+
+
+typedef unsigned SizeType;
+}
+
+
+
+namespace rapidjson {
+using std::size_t;
+}
+       
+
+
+
+extern "C" {
+
+
+extern void __assert_fail (const char *__assertion, const char *__file,
+      unsigned int __line, const char *__function)
+     throw () __attribute__ ((__noreturn__));
+
+
+extern void __assert_perror_fail (int __errnum, const char *__file,
+      unsigned int __line, const char *__function)
+     throw () __attribute__ ((__noreturn__));
+
+
+
+
+extern void __assert (const char *__assertion, const char *__file, int __line)
+     throw () __attribute__ ((__noreturn__));
+
+
+}
+
+namespace rapidjson {
+template <bool x> struct STATIC_ASSERTION_FAILURE;
+template <> struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; };
+template<int x> struct StaticAssertTest {};
+}
+
+namespace rapidjson {
+class CrtAllocator {
+public:
+    static const bool kNeedFree = true;
+    void* Malloc(size_t size) {
+        if (size)
+            return std::malloc(size);
+        else
+            return 
+                  __null
+                      ;
+    }
+    void* Realloc(void* originalPtr, size_t originalSize, size_t newSize) {
+        (void)originalSize;
+        if (newSize == 0) {
+            std::free(originalPtr);
+            return 
+                  __null
+                      ;
+        }
+        return std::realloc(originalPtr, newSize);
+    }
+    static void Free(void *ptr) { std::free(ptr); }
+};
+template <typename BaseAllocator = CrtAllocator>
+class MemoryPoolAllocator {
+public:
+    static const bool kNeedFree = false;
+
+
+
+
+
+    MemoryPoolAllocator(size_t chunkSize = kDefaultChunkCapacity, BaseAllocator* baseAllocator = 0) :
+        chunkHead_(0), chunk_capacity_(chunkSize), userBuffer_(0), baseAllocator_(baseAllocator), ownBaseAllocator_(0)
+    {
+    }
+    MemoryPoolAllocator(void *buffer, size_t size, size_t chunkSize = kDefaultChunkCapacity, BaseAllocator* baseAllocator = 0) :
+        chunkHead_(0), chunk_capacity_(chunkSize), userBuffer_(buffer), baseAllocator_(baseAllocator), ownBaseAllocator_(0)
+    {
+        
+       (static_cast <bool> (
+       buffer != 0
+       ) ? void (0) : __assert_fail (
+       "buffer != 0"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/allocators.h", 128, __extension__ __PRETTY_FUNCTION__))
+                                    ;
+        
+       (static_cast <bool> (
+       size > sizeof(ChunkHeader)
+       ) ? void (0) : __assert_fail (
+       "size > sizeof(ChunkHeader)"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/allocators.h", 129, __extension__ __PRETTY_FUNCTION__))
+                                                   ;
+        chunkHead_ = reinterpret_cast<ChunkHeader*>(buffer);
+        chunkHead_->capacity = size - sizeof(ChunkHeader);
+        chunkHead_->size = 0;
+        chunkHead_->next = 0;
+    }
+
+
+
+
+    ~MemoryPoolAllocator() {
+        Clear();
+        delete ownBaseAllocator_;
+    }
+
+
+    void Clear() {
+        while (chunkHead_ && chunkHead_ != userBuffer_) {
+            ChunkHeader* next = chunkHead_->next;
+            baseAllocator_->Free(chunkHead_);
+            chunkHead_ = next;
+        }
+        if (chunkHead_ && chunkHead_ == userBuffer_)
+            chunkHead_->size = 0;
+    }
+
+
+
+
+    size_t Capacity() const {
+        size_t capacity = 0;
+        for (ChunkHeader* c = chunkHead_; c != 0; c = c->next)
+            capacity += c->capacity;
+        return capacity;
+    }
+
+
+
+
+    size_t Size() const {
+        size_t size = 0;
+        for (ChunkHeader* c = chunkHead_; c != 0; c = c->next)
+            size += c->size;
+        return size;
+    }
+
+
+    void* Malloc(size_t size) {
+        if (!size)
+            return 
+                  __null
+                      ;
+
+        size = ((size + 7u) & ~7u);
+        if (chunkHead_ == 0 || chunkHead_->size + size > chunkHead_->capacity)
+            AddChunk(chunk_capacity_ > size ? chunk_capacity_ : size);
+
+        void *buffer = reinterpret_cast<char *>(chunkHead_ + 1) + chunkHead_->size;
+        chunkHead_->size += size;
+        return buffer;
+    }
+
+
+    void* Realloc(void* originalPtr, size_t originalSize, size_t newSize) {
+        if (originalPtr == 0)
+            return Malloc(newSize);
+
+        if (newSize == 0)
+            return 
+                  __null
+                      ;
+
+
+        if (originalSize >= newSize)
+            return originalPtr;
+
+
+        if (originalPtr == (char *)(chunkHead_ + 1) + chunkHead_->size - originalSize) {
+            size_t increment = static_cast<size_t>(newSize - originalSize);
+            increment = ((increment + 7u) & ~7u);
+            if (chunkHead_->size + increment <= chunkHead_->capacity) {
+                chunkHead_->size += increment;
+                return originalPtr;
+            }
+        }
+
+
+        void* newBuffer = Malloc(newSize);
+        
+       (static_cast <bool> (
+       newBuffer != 0
+       ) ? void (0) : __assert_fail (
+       "newBuffer != 0"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/allocators.h", 213, __extension__ __PRETTY_FUNCTION__))
+                                       ;
+        if (originalSize)
+            std::memcpy(newBuffer, originalPtr, originalSize);
+        return newBuffer;
+    }
+
+
+    static void Free(void *ptr) { (void)ptr; }
+
+private:
+
+    MemoryPoolAllocator(const MemoryPoolAllocator& rhs) ;
+
+    MemoryPoolAllocator& operator=(const MemoryPoolAllocator& rhs) ;
+
+
+
+
+    void AddChunk(size_t capacity) {
+        if (!baseAllocator_)
+            ownBaseAllocator_ = baseAllocator_ = new BaseAllocator();
+        ChunkHeader* chunk = reinterpret_cast<ChunkHeader*>(baseAllocator_->Malloc(sizeof(ChunkHeader) + capacity));
+        chunk->capacity = capacity;
+        chunk->size = 0;
+        chunk->next = chunkHead_;
+        chunkHead_ = chunk;
+    }
+
+    static const int kDefaultChunkCapacity = 64 * 1024;
+
+
+
+
+    struct ChunkHeader {
+        size_t capacity;
+        size_t size;
+        ChunkHeader *next;
+    };
+
+    ChunkHeader *chunkHead_;
+    size_t chunk_capacity_;
+    void *userBuffer_;
+    BaseAllocator* baseAllocator_;
+    BaseAllocator* ownBaseAllocator_;
+};
+
+}
+
+
+
+
+
+
+
+
+namespace rapidjson {
+template<typename CharType = char>
+struct UTF8 {
+    typedef CharType Ch;
+
+    enum { supportUnicode = 1 };
+
+    template<typename OutputStream>
+    static void Encode(OutputStream& os, unsigned codepoint) {
+        if (codepoint <= 0x7F)
+            os.Put(static_cast<Ch>(codepoint & 0xFF));
+        else if (codepoint <= 0x7FF) {
+            os.Put(static_cast<Ch>(0xC0 | ((codepoint >> 6) & 0xFF)));
+            os.Put(static_cast<Ch>(0x80 | ((codepoint & 0x3F))));
+        }
+        else if (codepoint <= 0xFFFF) {
+            os.Put(static_cast<Ch>(0xE0 | ((codepoint >> 12) & 0xFF)));
+            os.Put(static_cast<Ch>(0x80 | ((codepoint >> 6) & 0x3F)));
+            os.Put(static_cast<Ch>(0x80 | (codepoint & 0x3F)));
+        }
+        else {
+            
+           (static_cast <bool> (
+           codepoint <= 0x10FFFF
+           ) ? void (0) : __assert_fail (
+           "codepoint <= 0x10FFFF"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/encodings.h", 115, __extension__ __PRETTY_FUNCTION__))
+                                                  ;
+            os.Put(static_cast<Ch>(0xF0 | ((codepoint >> 18) & 0xFF)));
+            os.Put(static_cast<Ch>(0x80 | ((codepoint >> 12) & 0x3F)));
+            os.Put(static_cast<Ch>(0x80 | ((codepoint >> 6) & 0x3F)));
+            os.Put(static_cast<Ch>(0x80 | (codepoint & 0x3F)));
+        }
+    }
+
+    template <typename InputStream>
+    static bool Decode(InputStream& is, unsigned* codepoint) {
+
+
+
+        Ch c = is.Take();
+        if (!(c & 0x80)) {
+            *codepoint = (unsigned char)c;
+            return true;
+        }
+
+        unsigned char type = GetRange((unsigned char)c);
+        *codepoint = (0xFF >> type) & (unsigned char)c;
+        bool result = true;
+        switch (type) {
+        case 2: c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        case 3: c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x70) != 0); c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        case 4: c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x50) != 0); c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        case 5: c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x10) != 0); c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x70) != 0); c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        case 6: c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x70) != 0); c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x70) != 0); c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        case 10: c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x20) != 0); c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        case 11: c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x60) != 0); c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x70) != 0); c = is.Take(); *codepoint = (*codepoint << 6) | ((unsigned char)c & 0x3Fu); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        default: return false;
+        }
+
+
+
+    }
+
+    template <typename InputStream, typename OutputStream>
+    static bool Validate(InputStream& is, OutputStream& os) {
+
+
+
+        Ch c;
+        os.Put(c = is.Take());
+        if (!(c & 0x80))
+            return true;
+
+        bool result = true;
+        switch (GetRange((unsigned char)c)) {
+        case 2: os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        case 3: os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x70) != 0); os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        case 4: os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x50) != 0); os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        case 5: os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x10) != 0); os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x70) != 0); os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        case 6: os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x70) != 0); os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x70) != 0); os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        case 10: os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x20) != 0); os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        case 11: os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x60) != 0); os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x70) != 0); os.Put(c = is.Take()); result &= ((GetRange((unsigned char)c) & 0x70) != 0); return result;
+        default: return false;
+        }
+
+
+
+    }
+
+    static unsigned char GetRange(unsigned char c) {
+
+
+        static const unsigned char type[] = {
+            0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+            0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+            0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+            0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+            0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,
+            0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,
+            0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
+            0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
+            8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
+            10,3,3,3,3,3,3,3,3,3,3,3,3,4,3,3, 11,6,6,6,5,8,8,8,8,8,8,8,8,8,8,8,
+        };
+        return type[c];
+    }
+
+    template <typename InputByteStream>
+    static CharType TakeBOM(InputByteStream& is) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputByteStream::Ch) == 1) >)> StaticAssertTypedef198 __attribute__((unused));
+        Ch c = Take(is);
+        if ((unsigned char)c != 0xEFu) return c;
+        c = is.Take();
+        if ((unsigned char)c != 0xBBu) return c;
+        c = is.Take();
+        if ((unsigned char)c != 0xBFu) return c;
+        c = is.Take();
+        return c;
+    }
+
+    template <typename InputByteStream>
+    static Ch Take(InputByteStream& is) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputByteStream::Ch) == 1) >)> StaticAssertTypedef211 __attribute__((unused));
+        return is.Take();
+    }
+
+    template <typename OutputByteStream>
+    static void PutBOM(OutputByteStream& os) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputByteStream::Ch) == 1) >)> StaticAssertTypedef217 __attribute__((unused));
+        os.Put(0xEFu); os.Put(0xBBu); os.Put(0xBFu);
+    }
+
+    template <typename OutputByteStream>
+    static void Put(OutputByteStream& os, Ch c) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputByteStream::Ch) == 1) >)> StaticAssertTypedef223 __attribute__((unused));
+        os.Put(static_cast<typename OutputByteStream::Ch>(c));
+    }
+};
+template<typename CharType = wchar_t>
+struct UTF16 {
+    typedef CharType Ch;
+    typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(Ch) >= 2) >)> StaticAssertTypedef243 __attribute__((unused));
+
+    enum { supportUnicode = 1 };
+
+    template<typename OutputStream>
+    static void Encode(OutputStream& os, unsigned codepoint) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputStream::Ch) >= 2) >)> StaticAssertTypedef249 __attribute__((unused));
+        if (codepoint <= 0xFFFF) {
+            
+           (static_cast <bool> (
+           codepoint < 0xD800 || codepoint > 0xDFFF
+           ) ? void (0) : __assert_fail (
+           "codepoint < 0xD800 || codepoint > 0xDFFF"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/encodings.h", 251, __extension__ __PRETTY_FUNCTION__))
+                                                                     ;
+            os.Put(static_cast<typename OutputStream::Ch>(codepoint));
+        }
+        else {
+            
+           (static_cast <bool> (
+           codepoint <= 0x10FFFF
+           ) ? void (0) : __assert_fail (
+           "codepoint <= 0x10FFFF"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/encodings.h", 255, __extension__ __PRETTY_FUNCTION__))
+                                                  ;
+            unsigned v = codepoint - 0x10000;
+            os.Put(static_cast<typename OutputStream::Ch>((v >> 10) | 0xD800));
+            os.Put((v & 0x3FF) | 0xDC00);
+        }
+    }
+
+    template <typename InputStream>
+    static bool Decode(InputStream& is, unsigned* codepoint) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputStream::Ch) >= 2) >)> StaticAssertTypedef264 __attribute__((unused));
+        Ch c = is.Take();
+        if (c < 0xD800 || c > 0xDFFF) {
+            *codepoint = c;
+            return true;
+        }
+        else if (c <= 0xDBFF) {
+            *codepoint = (c & 0x3FF) << 10;
+            c = is.Take();
+            *codepoint |= (c & 0x3FF);
+            *codepoint += 0x10000;
+            return c >= 0xDC00 && c <= 0xDFFF;
+        }
+        return false;
+    }
+
+    template <typename InputStream, typename OutputStream>
+    static bool Validate(InputStream& is, OutputStream& os) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputStream::Ch) >= 2) >)> StaticAssertTypedef282 __attribute__((unused));
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputStream::Ch) >= 2) >)> StaticAssertTypedef283 __attribute__((unused));
+        Ch c;
+        os.Put(c = is.Take());
+        if (c < 0xD800 || c > 0xDFFF)
+            return true;
+        else if (c <= 0xDBFF) {
+            os.Put(c = is.Take());
+            return c >= 0xDC00 && c <= 0xDFFF;
+        }
+        return false;
+    }
+};
+
+
+template<typename CharType = wchar_t>
+struct UTF16LE : UTF16<CharType> {
+    template <typename InputByteStream>
+    static CharType TakeBOM(InputByteStream& is) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputByteStream::Ch) == 1) >)> StaticAssertTypedef301 __attribute__((unused));
+        CharType c = Take(is);
+        return (unsigned short)c == 0xFEFFu ? Take(is) : c;
+    }
+
+    template <typename InputByteStream>
+    static CharType Take(InputByteStream& is) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputByteStream::Ch) == 1) >)> StaticAssertTypedef308 __attribute__((unused));
+        CharType c = (unsigned char)is.Take();
+        c |= (unsigned char)is.Take() << 8;
+        return c;
+    }
+
+    template <typename OutputByteStream>
+    static void PutBOM(OutputByteStream& os) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputByteStream::Ch) == 1) >)> StaticAssertTypedef316 __attribute__((unused));
+        os.Put(0xFFu); os.Put(0xFEu);
+    }
+
+    template <typename OutputByteStream>
+    static void Put(OutputByteStream& os, CharType c) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputByteStream::Ch) == 1) >)> StaticAssertTypedef322 __attribute__((unused));
+        os.Put(c & 0xFFu);
+        os.Put((c >> 8) & 0xFFu);
+    }
+};
+
+
+template<typename CharType = wchar_t>
+struct UTF16BE : UTF16<CharType> {
+    template <typename InputByteStream>
+    static CharType TakeBOM(InputByteStream& is) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputByteStream::Ch) == 1) >)> StaticAssertTypedef333 __attribute__((unused));
+        CharType c = Take(is);
+        return (unsigned short)c == 0xFEFFu ? Take(is) : c;
+    }
+
+    template <typename InputByteStream>
+    static CharType Take(InputByteStream& is) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputByteStream::Ch) == 1) >)> StaticAssertTypedef340 __attribute__((unused));
+        CharType c = (unsigned char)is.Take() << 8;
+        c |= (unsigned char)is.Take();
+        return c;
+    }
+
+    template <typename OutputByteStream>
+    static void PutBOM(OutputByteStream& os) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputByteStream::Ch) == 1) >)> StaticAssertTypedef348 __attribute__((unused));
+        os.Put(0xFEu); os.Put(0xFFu);
+    }
+
+    template <typename OutputByteStream>
+    static void Put(OutputByteStream& os, CharType c) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputByteStream::Ch) == 1) >)> StaticAssertTypedef354 __attribute__((unused));
+        os.Put((c >> 8) & 0xFFu);
+        os.Put(c & 0xFFu);
+    }
+};
+template<typename CharType = unsigned>
+struct UTF32 {
+    typedef CharType Ch;
+    typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(Ch) >= 4) >)> StaticAssertTypedef374 __attribute__((unused));
+
+    enum { supportUnicode = 1 };
+
+    template<typename OutputStream>
+    static void Encode(OutputStream& os, unsigned codepoint) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputStream::Ch) >= 4) >)> StaticAssertTypedef380 __attribute__((unused));
+        
+       (static_cast <bool> (
+       codepoint <= 0x10FFFF
+       ) ? void (0) : __assert_fail (
+       "codepoint <= 0x10FFFF"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/encodings.h", 381, __extension__ __PRETTY_FUNCTION__))
+                                              ;
+        os.Put(codepoint);
+    }
+
+    template <typename InputStream>
+    static bool Decode(InputStream& is, unsigned* codepoint) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputStream::Ch) >= 4) >)> StaticAssertTypedef387 __attribute__((unused));
+        Ch c = is.Take();
+        *codepoint = c;
+        return c <= 0x10FFFF;
+    }
+
+    template <typename InputStream, typename OutputStream>
+    static bool Validate(InputStream& is, OutputStream& os) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputStream::Ch) >= 4) >)> StaticAssertTypedef395 __attribute__((unused));
+        Ch c;
+        os.Put(c = is.Take());
+        return c <= 0x10FFFF;
+    }
+};
+
+
+template<typename CharType = unsigned>
+struct UTF32LE : UTF32<CharType> {
+    template <typename InputByteStream>
+    static CharType TakeBOM(InputByteStream& is) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputByteStream::Ch) == 1) >)> StaticAssertTypedef407 __attribute__((unused));
+        CharType c = Take(is);
+        return (unsigned)c == 0x0000FEFFu ? Take(is) : c;
+    }
+
+    template <typename InputByteStream>
+    static CharType Take(InputByteStream& is) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputByteStream::Ch) == 1) >)> StaticAssertTypedef414 __attribute__((unused));
+        CharType c = (unsigned char)is.Take();
+        c |= (unsigned char)is.Take() << 8;
+        c |= (unsigned char)is.Take() << 16;
+        c |= (unsigned char)is.Take() << 24;
+        return c;
+    }
+
+    template <typename OutputByteStream>
+    static void PutBOM(OutputByteStream& os) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputByteStream::Ch) == 1) >)> StaticAssertTypedef424 __attribute__((unused));
+        os.Put(0xFFu); os.Put(0xFEu); os.Put(0x00u); os.Put(0x00u);
+    }
+
+    template <typename OutputByteStream>
+    static void Put(OutputByteStream& os, CharType c) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputByteStream::Ch) == 1) >)> StaticAssertTypedef430 __attribute__((unused));
+        os.Put(c & 0xFFu);
+        os.Put((c >> 8) & 0xFFu);
+        os.Put((c >> 16) & 0xFFu);
+        os.Put((c >> 24) & 0xFFu);
+    }
+};
+
+
+template<typename CharType = unsigned>
+struct UTF32BE : UTF32<CharType> {
+    template <typename InputByteStream>
+    static CharType TakeBOM(InputByteStream& is) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputByteStream::Ch) == 1) >)> StaticAssertTypedef443 __attribute__((unused));
+        CharType c = Take(is);
+        return (unsigned)c == 0x0000FEFFu ? Take(is) : c;
+    }
+
+    template <typename InputByteStream>
+    static CharType Take(InputByteStream& is) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputByteStream::Ch) == 1) >)> StaticAssertTypedef450 __attribute__((unused));
+        CharType c = (unsigned char)is.Take() << 24;
+        c |= (unsigned char)is.Take() << 16;
+        c |= (unsigned char)is.Take() << 8;
+        c |= (unsigned char)is.Take();
+        return c;
+    }
+
+    template <typename OutputByteStream>
+    static void PutBOM(OutputByteStream& os) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputByteStream::Ch) == 1) >)> StaticAssertTypedef460 __attribute__((unused));
+        os.Put(0x00u); os.Put(0x00u); os.Put(0xFEu); os.Put(0xFFu);
+    }
+
+    template <typename OutputByteStream>
+    static void Put(OutputByteStream& os, CharType c) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputByteStream::Ch) == 1) >)> StaticAssertTypedef466 __attribute__((unused));
+        os.Put((c >> 24) & 0xFFu);
+        os.Put((c >> 16) & 0xFFu);
+        os.Put((c >> 8) & 0xFFu);
+        os.Put(c & 0xFFu);
+    }
+};
+template<typename CharType = char>
+struct ASCII {
+    typedef CharType Ch;
+
+    enum { supportUnicode = 0 };
+
+    template<typename OutputStream>
+    static void Encode(OutputStream& os, unsigned codepoint) {
+        
+       (static_cast <bool> (
+       codepoint <= 0x7F
+       ) ? void (0) : __assert_fail (
+       "codepoint <= 0x7F"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/encodings.h", 490, __extension__ __PRETTY_FUNCTION__))
+                                          ;
+        os.Put(static_cast<Ch>(codepoint & 0xFF));
+    }
+
+    template <typename InputStream>
+    static bool Decode(InputStream& is, unsigned* codepoint) {
+        unsigned char c = static_cast<unsigned char>(is.Take());
+        *codepoint = c;
+        return c <= 0X7F;
+    }
+
+    template <typename InputStream, typename OutputStream>
+    static bool Validate(InputStream& is, OutputStream& os) {
+        unsigned char c = is.Take();
+        os.Put(c);
+        return c <= 0x7F;
+    }
+
+    template <typename InputByteStream>
+    static CharType TakeBOM(InputByteStream& is) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputByteStream::Ch) == 1) >)> StaticAssertTypedef510 __attribute__((unused));
+        Ch c = Take(is);
+        return c;
+    }
+
+    template <typename InputByteStream>
+    static Ch Take(InputByteStream& is) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename InputByteStream::Ch) == 1) >)> StaticAssertTypedef517 __attribute__((unused));
+        return is.Take();
+    }
+
+    template <typename OutputByteStream>
+    static void PutBOM(OutputByteStream& os) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputByteStream::Ch) == 1) >)> StaticAssertTypedef523 __attribute__((unused));
+        (void)os;
+    }
+
+    template <typename OutputByteStream>
+    static void Put(OutputByteStream& os, Ch c) {
+        typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(typename OutputByteStream::Ch) == 1) >)> StaticAssertTypedef529 __attribute__((unused));
+        os.Put(static_cast<typename OutputByteStream::Ch>(c));
+    }
+};
+
+
+
+
+
+enum UTFType {
+    kUTF8 = 0,
+    kUTF16LE = 1,
+    kUTF16BE = 2,
+    kUTF32LE = 3,
+    kUTF32BE = 4
+};
+
+
+
+
+template<typename CharType>
+struct AutoUTF {
+    typedef CharType Ch;
+
+    enum { supportUnicode = 1 };
+
+
+
+    template<typename OutputStream>
+    __attribute__((always_inline)) static void Encode(OutputStream& os, unsigned codepoint) {
+        typedef void (*EncodeFunc)(OutputStream&, unsigned);
+        static const EncodeFunc f[] = { UTF8<Ch>::Encode, UTF16LE<Ch>::Encode, UTF16BE<Ch>::Encode, UTF32LE<Ch>::Encode, UTF32BE<Ch>::Encode };
+        (*f[os.GetType()])(os, codepoint);
+    }
+
+    template <typename InputStream>
+    __attribute__((always_inline)) static bool Decode(InputStream& is, unsigned* codepoint) {
+        typedef bool (*DecodeFunc)(InputStream&, unsigned*);
+        static const DecodeFunc f[] = { UTF8<Ch>::Decode, UTF16LE<Ch>::Decode, UTF16BE<Ch>::Decode, UTF32LE<Ch>::Decode, UTF32BE<Ch>::Decode };
+        return (*f[is.GetType()])(is, codepoint);
+    }
+
+    template <typename InputStream, typename OutputStream>
+    __attribute__((always_inline)) static bool Validate(InputStream& is, OutputStream& os) {
+        typedef bool (*ValidateFunc)(InputStream&, OutputStream&);
+        static const ValidateFunc f[] = { UTF8<Ch>::Validate, UTF16LE<Ch>::Validate, UTF16BE<Ch>::Validate, UTF32LE<Ch>::Validate, UTF32BE<Ch>::Validate };
+        return (*f[is.GetType()])(is, os);
+    }
+
+
+};
+
+
+
+
+
+template<typename SourceEncoding, typename TargetEncoding>
+struct Transcoder {
+
+    template<typename InputStream, typename OutputStream>
+    __attribute__((always_inline)) static bool Transcode(InputStream& is, OutputStream& os) {
+        unsigned codepoint;
+        if (!SourceEncoding::Decode(is, &codepoint))
+            return false;
+        TargetEncoding::Encode(os, codepoint);
+        return true;
+    }
+
+
+    template<typename InputStream, typename OutputStream>
+    __attribute__((always_inline)) static bool Validate(InputStream& is, OutputStream& os) {
+        return Transcode(is, os);
+    }
+};
+
+
+template<typename Encoding>
+struct Transcoder<Encoding, Encoding> {
+    template<typename InputStream, typename OutputStream>
+    __attribute__((always_inline)) static bool Transcode(InputStream& is, OutputStream& os) {
+        os.Put(is.Take());
+        return true;
+    }
+
+    template<typename InputStream, typename OutputStream>
+    __attribute__((always_inline)) static bool Validate(InputStream& is, OutputStream& os) {
+        return Encoding::Validate(is, os);
+    }
+};
+
+}
+
+
+
+
+
+
+
+
+
+namespace rapidjson {
+template<typename Stream>
+struct StreamTraits {
+
+
+
+
+
+    enum { copyOptimization = 0 };
+};
+
+
+template<typename Stream, typename Ch>
+inline void PutN(Stream& stream, Ch c, size_t n) {
+    for (size_t i = 0; i < n; i++)
+        stream.Put(c);
+}
+
+
+
+
+
+
+
+template <typename Encoding>
+struct GenericStringStream {
+    typedef typename Encoding::Ch Ch;
+
+    GenericStringStream(const Ch *src) : src_(src), head_(src) {}
+
+    Ch Peek() const { return *src_; }
+    Ch Take() { return *src_++; }
+    size_t Tell() const { return static_cast<size_t>(src_ - head_); }
+
+    Ch* PutBegin() { 
+                    (static_cast <bool> (
+                    false
+                    ) ? void (0) : __assert_fail (
+                    "false"
+                    , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/rapidjson.h", 584, __extension__ __PRETTY_FUNCTION__))
+                                           ; return 0; }
+    void Put(Ch) { 
+                  (static_cast <bool> (
+                  false
+                  ) ? void (0) : __assert_fail (
+                  "false"
+                  , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/rapidjson.h", 585, __extension__ __PRETTY_FUNCTION__))
+                                         ; }
+    void Flush() { 
+                  (static_cast <bool> (
+                  false
+                  ) ? void (0) : __assert_fail (
+                  "false"
+                  , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/rapidjson.h", 586, __extension__ __PRETTY_FUNCTION__))
+                                         ; }
+    size_t PutEnd(Ch*) { 
+                        (static_cast <bool> (
+                        false
+                        ) ? void (0) : __assert_fail (
+                        "false"
+                        , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/rapidjson.h", 587, __extension__ __PRETTY_FUNCTION__))
+                                               ; return 0; }
+
+    const Ch* src_;
+    const Ch* head_;
+};
+
+template <typename Encoding>
+struct StreamTraits<GenericStringStream<Encoding> > {
+    enum { copyOptimization = 1 };
+};
+
+
+typedef GenericStringStream<UTF8<> > StringStream;
+template <typename Encoding>
+struct GenericInsituStringStream {
+    typedef typename Encoding::Ch Ch;
+
+    GenericInsituStringStream(Ch *src) : src_(src), dst_(0), head_(src) {}
+
+
+    Ch Peek() { return *src_; }
+    Ch Take() { return *src_++; }
+    size_t Tell() { return static_cast<size_t>(src_ - head_); }
+
+
+    void Put(Ch c) { 
+                    (static_cast <bool> (
+                    dst_ != 0
+                    ) ? void (0) : __assert_fail (
+                    "dst_ != 0"
+                    , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/rapidjson.h", 620, __extension__ __PRETTY_FUNCTION__))
+                                               ; *dst_++ = c; }
+
+    Ch* PutBegin() { return dst_ = src_; }
+    size_t PutEnd(Ch* begin) { return static_cast<size_t>(dst_ - begin); }
+    void Flush() {}
+
+    Ch* Push(size_t count) { Ch* begin = dst_; dst_ += count; return begin; }
+    void Pop(size_t count) { dst_ -= count; }
+
+    Ch* src_;
+    Ch* dst_;
+    Ch* head_;
+};
+
+template <typename Encoding>
+struct StreamTraits<GenericInsituStringStream<Encoding> > {
+    enum { copyOptimization = 1 };
+};
+
+
+typedef GenericInsituStringStream<UTF8<> > InsituStringStream;
+
+
+
+
+
+enum Type {
+    kNullType = 0,
+    kFalseType = 1,
+    kTrueType = 2,
+    kObjectType = 3,
+    kArrayType = 4,
+    kStringType = 5,
+    kNumberType = 6
+};
+
+}
+
+
+
+
+
+
+
+namespace rapidjson {
+namespace internal {
+
+
+template <typename T> struct Void { typedef void Type; };
+
+
+
+
+template <bool Cond> struct BoolType {
+    static const bool Value = Cond;
+    typedef BoolType Type;
+};
+typedef BoolType<true> TrueType;
+typedef BoolType<false> FalseType;
+
+
+
+
+
+
+template <bool C> struct SelectIfImpl { template <typename T1, typename T2> struct Apply { typedef T1 Type; }; };
+template <> struct SelectIfImpl<false> { template <typename T1, typename T2> struct Apply { typedef T2 Type; }; };
+template <bool C, typename T1, typename T2> struct SelectIfCond : SelectIfImpl<C>::template Apply<T1,T2> {};
+template <typename C, typename T1, typename T2> struct SelectIf : SelectIfCond<C::Value, T1, T2> {};
+
+template <bool Cond1, bool Cond2> struct AndExprCond : FalseType {};
+template <> struct AndExprCond<true, true> : TrueType {};
+template <bool Cond1, bool Cond2> struct OrExprCond : TrueType {};
+template <> struct OrExprCond<false, false> : FalseType {};
+
+template <typename C> struct BoolExpr : SelectIf<C,TrueType,FalseType>::Type {};
+template <typename C> struct NotExpr : SelectIf<C,FalseType,TrueType>::Type {};
+template <typename C1, typename C2> struct AndExpr : AndExprCond<C1::Value, C2::Value>::Type {};
+template <typename C1, typename C2> struct OrExpr : OrExprCond<C1::Value, C2::Value>::Type {};
+
+
+
+
+template <typename T> struct AddConst { typedef const T Type; };
+template <bool Constify, typename T> struct MaybeAddConst : SelectIfCond<Constify, const T, T> {};
+template <typename T> struct RemoveConst { typedef T Type; };
+template <typename T> struct RemoveConst<const T> { typedef T Type; };
+
+
+
+
+
+template <typename T, typename U> struct IsSame : FalseType {};
+template <typename T> struct IsSame<T, T> : TrueType {};
+
+template <typename T> struct IsConst : FalseType {};
+template <typename T> struct IsConst<const T> : TrueType {};
+
+template <typename CT, typename T>
+struct IsMoreConst
+    : AndExpr<IsSame<typename RemoveConst<CT>::Type, typename RemoveConst<T>::Type>,
+              BoolType<IsConst<CT>::Value >= IsConst<T>::Value> >::Type {};
+
+template <typename T> struct IsPointer : FalseType {};
+template <typename T> struct IsPointer<T*> : TrueType {};
+template<typename B, typename D> struct IsBaseOfImpl {
+    typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(B) != 0) >)> StaticAssertTypedef107 __attribute__((unused));
+    typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool(sizeof(D) != 0) >)> StaticAssertTypedef108 __attribute__((unused));
+
+    typedef char (&Yes)[1];
+    typedef char (&No) [2];
+
+    template <typename T>
+    static Yes Check(const D*, T);
+    static No Check(const B*, int);
+
+    struct Host {
+        operator const B*() const;
+        operator const D*();
+    };
+
+    enum { Value = (sizeof(Check(Host(), 0)) == sizeof(Yes)) };
+};
+
+template <typename B, typename D> struct IsBaseOf
+    : OrExpr<IsSame<B, D>, BoolExpr<IsBaseOfImpl<B, D> > >::Type {};
+
+
+
+
+
+
+
+template <bool Condition, typename T = void> struct EnableIfCond { typedef T Type; };
+template <typename T> struct EnableIfCond<false, T> { };
+
+template <bool Condition, typename T = void> struct DisableIfCond { typedef T Type; };
+template <typename T> struct DisableIfCond<true, T> { };
+
+template <typename Condition, typename T = void>
+struct EnableIf : EnableIfCond<Condition::Value, T> {};
+
+template <typename Condition, typename T = void>
+struct DisableIf : DisableIfCond<Condition::Value, T> {};
+
+
+struct SfinaeTag {};
+template <typename T> struct RemoveSfinaeTag;
+template <typename T> struct RemoveSfinaeTag<SfinaeTag&(*)(T)> { typedef T Type; };
+}
+}
+
+
+
+
+
+namespace rapidjson {
+namespace internal {
+
+
+
+
+
+
+
+template <typename Allocator>
+class Stack {
+public:
+
+
+    Stack(Allocator* allocator, size_t stackCapacity) : allocator_(allocator), ownAllocator_(0), stack_(0), stackTop_(0), stackEnd_(0), initialCapacity_(stackCapacity) {
+        
+       (static_cast <bool> (
+       stackCapacity > 0
+       ) ? void (0) : __assert_fail (
+       "stackCapacity > 0"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/stack.h", 35, __extension__ __PRETTY_FUNCTION__))
+                                          ;
+    }
+
+
+    Stack(Stack&& rhs)
+        : allocator_(rhs.allocator_),
+          ownAllocator_(rhs.ownAllocator_),
+          stack_(rhs.stack_),
+          stackTop_(rhs.stackTop_),
+          stackEnd_(rhs.stackEnd_),
+          initialCapacity_(rhs.initialCapacity_)
+    {
+        rhs.allocator_ = 0;
+        rhs.ownAllocator_ = 0;
+        rhs.stack_ = 0;
+        rhs.stackTop_ = 0;
+        rhs.stackEnd_ = 0;
+        rhs.initialCapacity_ = 0;
+    }
+
+
+    ~Stack() {
+        Destroy();
+    }
+
+
+    Stack& operator=(Stack&& rhs) {
+        if (&rhs != this)
+        {
+            Destroy();
+
+            allocator_ = rhs.allocator_;
+            ownAllocator_ = rhs.ownAllocator_;
+            stack_ = rhs.stack_;
+            stackTop_ = rhs.stackTop_;
+            stackEnd_ = rhs.stackEnd_;
+            initialCapacity_ = rhs.initialCapacity_;
+
+            rhs.allocator_ = 0;
+            rhs.ownAllocator_ = 0;
+            rhs.stack_ = 0;
+            rhs.stackTop_ = 0;
+            rhs.stackEnd_ = 0;
+            rhs.initialCapacity_ = 0;
+        }
+        return *this;
+    }
+
+
+    void Clear() { stackTop_ = stack_; }
+
+    void ShrinkToFit() {
+        if (Empty()) {
+
+            Allocator::Free(stack_);
+            stack_ = 0;
+            stackTop_ = 0;
+            stackEnd_ = 0;
+        }
+        else
+            Resize(GetSize());
+    }
+
+
+
+    template<typename T>
+    __attribute__((always_inline)) T* Push(size_t count = 1) {
+
+        if (stackTop_ + sizeof(T) * count >= stackEnd_)
+            Expand<T>(count);
+
+        T* ret = reinterpret_cast<T*>(stackTop_);
+        stackTop_ += sizeof(T) * count;
+        return ret;
+    }
+
+    template<typename T>
+    T* Pop(size_t count) {
+        
+       (static_cast <bool> (
+       GetSize() >= count * sizeof(T)
+       ) ? void (0) : __assert_fail (
+       "GetSize() >= count * sizeof(T)"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/stack.h", 113, __extension__ __PRETTY_FUNCTION__))
+                                                       ;
+        stackTop_ -= count * sizeof(T);
+        return reinterpret_cast<T*>(stackTop_);
+    }
+
+    template<typename T>
+    T* Top() {
+        
+       (static_cast <bool> (
+       GetSize() >= sizeof(T)
+       ) ? void (0) : __assert_fail (
+       "GetSize() >= sizeof(T)"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/stack.h", 120, __extension__ __PRETTY_FUNCTION__))
+                                               ;
+        return reinterpret_cast<T*>(stackTop_ - sizeof(T));
+    }
+
+    template<typename T>
+    T* Bottom() { return (T*)stack_; }
+
+    Allocator& GetAllocator() { return *allocator_; }
+    bool Empty() const { return stackTop_ == stack_; }
+    size_t GetSize() const { return static_cast<size_t>(stackTop_ - stack_); }
+    size_t GetCapacity() const { return static_cast<size_t>(stackEnd_ - stack_); }
+
+private:
+    template<typename T>
+    void Expand(size_t count) {
+
+        size_t newCapacity;
+        if (stack_ == 0) {
+            if (!allocator_)
+                ownAllocator_ = allocator_ = new Allocator();
+            newCapacity = initialCapacity_;
+        } else {
+            newCapacity = GetCapacity();
+            newCapacity += (newCapacity + 1) / 2;
+        }
+        size_t newSize = GetSize() + sizeof(T) * count;
+        if (newCapacity < newSize)
+            newCapacity = newSize;
+
+        Resize(newCapacity);
+    }
+
+    void Resize(size_t newCapacity) {
+        const size_t size = GetSize();
+        stack_ = (char*)allocator_->Realloc(stack_, GetCapacity(), newCapacity);
+        stackTop_ = stack_ + size;
+        stackEnd_ = stack_ + newCapacity;
+    }
+
+    void Destroy() {
+        Allocator::Free(stack_);
+        delete ownAllocator_;
+    }
+
+
+    Stack(const Stack&);
+    Stack& operator=(const Stack&);
+
+    Allocator* allocator_;
+    Allocator* ownAllocator_;
+    char *stack_;
+    char *stackTop_;
+    char *stackEnd_;
+    size_t initialCapacity_;
+};
+
+}
+}
+namespace rapidjson {
+namespace internal {
+
+class Double {
+public:
+    Double() {}
+    Double(double d) : d_(d) {}
+    Double(uint64_t u) : u_(u) {}
+
+    double Value() const { return d_; }
+    uint64_t Uint64Value() const { return u_; }
+
+    double NextPositiveDouble() const {
+        
+       (static_cast <bool> (
+       !Sign()
+       ) ? void (0) : __assert_fail (
+       "!Sign()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/ieee754.h", 33, __extension__ __PRETTY_FUNCTION__))
+                                ;
+        return Double(u_ + 1).Value();
+    }
+
+    bool Sign() const { return (u_ & kSignMask) != 0; }
+    uint64_t Significand() const { return u_ & kSignificandMask; }
+    int Exponent() const { return static_cast<int>(((u_ & kExponentMask) >> kSignificandSize) - kExponentBias); }
+
+    bool IsNan() const { return (u_ & kExponentMask) == kExponentMask && Significand() != 0; }
+    bool IsInf() const { return (u_ & kExponentMask) == kExponentMask && Significand() == 0; }
+    bool IsNormal() const { return (u_ & kExponentMask) != 0 || Significand() == 0; }
+    bool IsZero() const { return (u_ & (kExponentMask | kSignificandMask)) == 0; }
+
+    uint64_t IntegerSignificand() const { return IsNormal() ? Significand() | kHiddenBit : Significand(); }
+    int IntegerExponent() const { return (IsNormal() ? Exponent() : kDenormalExponent) - kSignificandSize; }
+    uint64_t ToBias() const { return (u_ & kSignMask) ? ~u_ + 1 : u_ | kSignMask; }
+
+    static unsigned EffectiveSignificandSize(int order) {
+        if (order >= -1021)
+            return 53;
+        else if (order <= -1074)
+            return 0;
+        else
+            return order + 1074;
+    }
+
+private:
+    static const int kSignificandSize = 52;
+    static const int kExponentBias = 0x3FF;
+    static const int kDenormalExponent = 1 - kExponentBias;
+    static const uint64_t kSignMask = ((static_cast<uint64_t>(0x80000000) << 32) | static_cast<uint64_t>(0x00000000));
+    static const uint64_t kExponentMask = ((static_cast<uint64_t>(0x7FF00000) << 32) | static_cast<uint64_t>(0x00000000));
+    static const uint64_t kSignificandMask = ((static_cast<uint64_t>(0x000FFFFF) << 32) | static_cast<uint64_t>(0xFFFFFFFF));
+    static const uint64_t kHiddenBit = ((static_cast<uint64_t>(0x00100000) << 32) | static_cast<uint64_t>(0x00000000));
+
+    union {
+        double d_;
+        uint64_t u_;
+    };
+};
+
+}
+}
+namespace rapidjson {
+namespace internal {
+
+class BigInteger {
+public:
+    typedef uint64_t Type;
+
+    BigInteger(const BigInteger& rhs) : count_(rhs.count_) {
+        std::memcpy(digits_, rhs.digits_, count_ * sizeof(Type));
+    }
+
+    explicit BigInteger(uint64_t u) : count_(1) {
+        digits_[0] = u;
+    }
+
+    BigInteger(const char* decimals, size_t length) : count_(1) {
+        
+       (static_cast <bool> (
+       length > 0
+       ) ? void (0) : __assert_fail (
+       "length > 0"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/biginteger.h", 40, __extension__ __PRETTY_FUNCTION__))
+                                   ;
+        digits_[0] = 0;
+        size_t i = 0;
+        const size_t kMaxDigitPerIteration = 19;
+        while (length >= kMaxDigitPerIteration) {
+            AppendDecimal64(decimals + i, decimals + i + kMaxDigitPerIteration);
+            length -= kMaxDigitPerIteration;
+            i += kMaxDigitPerIteration;
+        }
+
+        if (length > 0)
+            AppendDecimal64(decimals + i, decimals + i + length);
+    }
+
+    BigInteger& operator=(uint64_t u) {
+        digits_[0] = u;
+        count_ = 1;
+        return *this;
+    }
+
+    BigInteger& operator+=(uint64_t u) {
+        Type backup = digits_[0];
+        digits_[0] += u;
+        for (size_t i = 0; i < count_ - 1; i++) {
+            if (digits_[i] >= backup)
+                return *this;
+            backup = digits_[i + 1];
+            digits_[i + 1] += 1;
+        }
+
+
+        if (digits_[count_ - 1] < backup)
+            PushBack(1);
+
+        return *this;
+    }
+
+    BigInteger& operator*=(uint64_t u) {
+        if (u == 0) return *this = 0;
+        if (u == 1) return *this;
+        if (*this == 1) return *this = u;
+
+        uint64_t k = 0;
+        for (size_t i = 0; i < count_; i++) {
+            uint64_t hi;
+            digits_[i] = MulAdd64(digits_[i], u, k, &hi);
+            k = hi;
+        }
+
+        if (k > 0)
+            PushBack(k);
+
+        return *this;
+    }
+
+    BigInteger& operator*=(uint32_t u) {
+        if (u == 0) return *this = 0;
+        if (u == 1) return *this;
+        if (*this == 1) return *this = u;
+
+        uint64_t k = 0;
+        for (size_t i = 0; i < count_; i++) {
+            const uint64_t c = digits_[i] >> 32;
+            const uint64_t d = digits_[i] & 0xFFFFFFFF;
+            const uint64_t uc = u * c;
+            const uint64_t ud = u * d;
+            const uint64_t p0 = ud + k;
+            const uint64_t p1 = uc + (p0 >> 32);
+            digits_[i] = (p0 & 0xFFFFFFFF) | (p1 << 32);
+            k = p1 >> 32;
+        }
+
+        if (k > 0)
+            PushBack(k);
+
+        return *this;
+    }
+
+    BigInteger& operator<<=(size_t shift) {
+        if (IsZero() || shift == 0) return *this;
+
+        size_t offset = shift / kTypeBit;
+        size_t interShift = shift % kTypeBit;
+        
+       (static_cast <bool> (
+       count_ + offset <= kCapacity
+       ) ? void (0) : __assert_fail (
+       "count_ + offset <= kCapacity"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/biginteger.h", 123, __extension__ __PRETTY_FUNCTION__))
+                                                     ;
+
+        if (interShift == 0) {
+            std::memmove(&digits_[count_ - 1 + offset], &digits_[count_ - 1], count_ * sizeof(Type));
+            count_ += offset;
+        }
+        else {
+            digits_[count_] = 0;
+            for (size_t i = count_; i > 0; i--)
+                digits_[i + offset] = (digits_[i] << interShift) | (digits_[i - 1] >> (kTypeBit - interShift));
+            digits_[offset] = digits_[0] << interShift;
+            count_ += offset;
+            if (digits_[count_])
+                count_++;
+        }
+
+        std::memset(digits_, 0, offset * sizeof(Type));
+
+        return *this;
+    }
+
+    bool operator==(const BigInteger& rhs) const {
+        return count_ == rhs.count_ && std::memcmp(digits_, rhs.digits_, count_ * sizeof(Type)) == 0;
+    }
+
+    bool operator==(const Type rhs) const {
+        return count_ == 1 && digits_[0] == rhs;
+    }
+
+    BigInteger& MultiplyPow5(unsigned exp) {
+        static const uint32_t kPow5[12] = {
+            5,
+            5 * 5,
+            5 * 5 * 5,
+            5 * 5 * 5 * 5,
+            5 * 5 * 5 * 5 * 5,
+            5 * 5 * 5 * 5 * 5 * 5,
+            5 * 5 * 5 * 5 * 5 * 5 * 5,
+            5 * 5 * 5 * 5 * 5 * 5 * 5 * 5,
+            5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5,
+            5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5,
+            5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5,
+            5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5
+        };
+        if (exp == 0) return *this;
+        for (; exp >= 27; exp -= 27) *this *= ((static_cast<uint64_t>(0X6765C793) << 32) | static_cast<uint64_t>(0XFA10079D));
+        for (; exp >= 13; exp -= 13) *this *= static_cast<uint32_t>(1220703125u);
+        if (exp > 0) *this *= kPow5[exp - 1];
+        return *this;
+    }
+
+
+
+    bool Difference(const BigInteger& rhs, BigInteger* out) const {
+        int cmp = Compare(rhs);
+        
+       (static_cast <bool> (
+       cmp != 0
+       ) ? void (0) : __assert_fail (
+       "cmp != 0"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/biginteger.h", 178, __extension__ __PRETTY_FUNCTION__))
+                                 ;
+        const BigInteger *a, *b;
+        bool ret;
+        if (cmp < 0) { a = &rhs; b = this; ret = true; }
+        else { a = this; b = &rhs; ret = false; }
+
+        Type borrow = 0;
+        for (size_t i = 0; i < a->count_; i++) {
+            Type d = a->digits_[i] - borrow;
+            if (i < b->count_)
+                d -= b->digits_[i];
+            borrow = (d > a->digits_[i]) ? 1 : 0;
+            out->digits_[i] = d;
+            if (d != 0)
+                out->count_ = i + 1;
+        }
+
+        return ret;
+    }
+
+    int Compare(const BigInteger& rhs) const {
+        if (count_ != rhs.count_)
+            return count_ < rhs.count_ ? -1 : 1;
+
+        for (size_t i = count_; i-- > 0;)
+            if (digits_[i] != rhs.digits_[i])
+                return digits_[i] < rhs.digits_[i] ? -1 : 1;
+
+        return 0;
+    }
+
+    size_t GetCount() const { return count_; }
+    Type GetDigit(size_t index) const { 
+                                       (static_cast <bool> (
+                                       index < count_
+                                       ) ? void (0) : __assert_fail (
+                                       "index < count_"
+                                       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/biginteger.h", 210, __extension__ __PRETTY_FUNCTION__))
+                                                                       ; return digits_[index]; }
+    bool IsZero() const { return count_ == 1 && digits_[0] == 0; }
+
+private:
+    void AppendDecimal64(const char* begin, const char* end) {
+        uint64_t u = ParseUint64(begin, end);
+        if (IsZero())
+            *this = u;
+        else {
+            unsigned exp = static_cast<unsigned>(end - begin);
+            (MultiplyPow5(exp) <<= exp) += u;
+        }
+    }
+
+    void PushBack(Type digit) {
+        
+       (static_cast <bool> (
+       count_ < kCapacity
+       ) ? void (0) : __assert_fail (
+       "count_ < kCapacity"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/biginteger.h", 225, __extension__ __PRETTY_FUNCTION__))
+                                           ;
+        digits_[count_++] = digit;
+    }
+
+    static uint64_t ParseUint64(const char* begin, const char* end) {
+        uint64_t r = 0;
+        for (const char* p = begin; p != end; ++p) {
+            
+           (static_cast <bool> (
+           *p >= '0' && *p <= '9'
+           ) ? void (0) : __assert_fail (
+           "*p >= '0' && *p <= '9'"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/biginteger.h", 232, __extension__ __PRETTY_FUNCTION__))
+                                                   ;
+            r = r * 10 + (*p - '0');
+        }
+        return r;
+    }
+
+
+    static uint64_t MulAdd64(uint64_t a, uint64_t b, uint64_t k, uint64_t* outHigh) {
+
+
+
+
+
+
+        __extension__ typedef unsigned __int128 uint128;
+        uint128 p = static_cast<uint128>(a) * static_cast<uint128>(b);
+        p += k;
+        *outHigh = static_cast<uint64_t>(p >> 64);
+        return static_cast<uint64_t>(p);
+    }
+
+    static const size_t kBitCount = 3328;
+    static const size_t kCapacity = kBitCount / sizeof(Type);
+    static const size_t kTypeBit = sizeof(Type) * 8;
+
+    Type digits_[kCapacity];
+    size_t count_;
+};
+
+}
+}
+namespace rapidjson {
+namespace internal {
+
+
+
+
+
+
+
+
+struct DiyFp {
+    DiyFp() {}
+
+    DiyFp(uint64_t fp, int exp) : f(fp), e(exp) {}
+
+    explicit DiyFp(double d) {
+        union {
+            double d;
+            uint64_t u64;
+        } u = { d };
+
+        int biased_e = static_cast<int>((u.u64 & kDpExponentMask) >> kDpSignificandSize);
+        uint64_t significand = (u.u64 & kDpSignificandMask);
+        if (biased_e != 0) {
+            f = significand + kDpHiddenBit;
+            e = biased_e - kDpExponentBias;
+        }
+        else {
+            f = significand;
+            e = kDpMinExponent + 1;
+        }
+    }
+
+    DiyFp operator-(const DiyFp& rhs) const {
+        return DiyFp(f - rhs.f, e);
+    }
+
+    DiyFp operator*(const DiyFp& rhs) const {
+
+
+
+
+
+
+
+        __extension__ typedef unsigned __int128 uint128;
+        uint128 p = static_cast<uint128>(f) * static_cast<uint128>(rhs.f);
+        uint64_t h = static_cast<uint64_t>(p >> 64);
+        uint64_t l = static_cast<uint64_t>(p);
+        if (l & (uint64_t(1) << 63))
+            h++;
+        return DiyFp(h, e + rhs.e + 64);
+    }
+
+    DiyFp Normalize() const {
+
+
+
+
+
+        int s = __builtin_clzll(f);
+        return DiyFp(f << s, e - s);
+    }
+
+    DiyFp NormalizeBoundary() const {
+        DiyFp res = *this;
+        while (!(res.f & (kDpHiddenBit << 1))) {
+            res.f <<= 1;
+            res.e--;
+        }
+        res.f <<= (kDiySignificandSize - kDpSignificandSize - 2);
+        res.e = res.e - (kDiySignificandSize - kDpSignificandSize - 2);
+        return res;
+    }
+
+    void NormalizedBoundaries(DiyFp* minus, DiyFp* plus) const {
+        DiyFp pl = DiyFp((f << 1) + 1, e - 1).NormalizeBoundary();
+        DiyFp mi = (f == kDpHiddenBit) ? DiyFp((f << 2) - 1, e - 2) : DiyFp((f << 1) - 1, e - 1);
+        mi.f <<= mi.e - pl.e;
+        mi.e = pl.e;
+        *plus = pl;
+        *minus = mi;
+    }
+
+    double ToDouble() const {
+        union {
+            double d;
+            uint64_t u64;
+        }u;
+        const uint64_t be = (e == kDpDenormalExponent && (f & kDpHiddenBit) == 0) ? 0 :
+            static_cast<uint64_t>(e + kDpExponentBias);
+        u.u64 = (f & kDpSignificandMask) | (be << kDpSignificandSize);
+        return u.d;
+    }
+
+    static const int kDiySignificandSize = 64;
+    static const int kDpSignificandSize = 52;
+    static const int kDpExponentBias = 0x3FF + kDpSignificandSize;
+    static const int kDpMaxExponent = 0x7FF - kDpExponentBias;
+    static const int kDpMinExponent = -kDpExponentBias;
+    static const int kDpDenormalExponent = -kDpExponentBias + 1;
+    static const uint64_t kDpExponentMask = ((static_cast<uint64_t>(0x7FF00000) << 32) | static_cast<uint64_t>(0x00000000));
+    static const uint64_t kDpSignificandMask = ((static_cast<uint64_t>(0x000FFFFF) << 32) | static_cast<uint64_t>(0xFFFFFFFF));
+    static const uint64_t kDpHiddenBit = ((static_cast<uint64_t>(0x00100000) << 32) | static_cast<uint64_t>(0x00000000));
+
+    uint64_t f;
+    int e;
+};
+
+inline DiyFp GetCachedPowerByIndex(size_t index) {
+
+    static const uint64_t kCachedPowers_F[] = {
+        ((static_cast<uint64_t>(0xfa8fd5a0) << 32) | static_cast<uint64_t>(0x081c0288)), ((static_cast<uint64_t>(0xbaaee17f) << 32) | static_cast<uint64_t>(0xa23ebf76)),
+        ((static_cast<uint64_t>(0x8b16fb20) << 32) | static_cast<uint64_t>(0x3055ac76)), ((static_cast<uint64_t>(0xcf42894a) << 32) | static_cast<uint64_t>(0x5dce35ea)),
+        ((static_cast<uint64_t>(0x9a6bb0aa) << 32) | static_cast<uint64_t>(0x55653b2d)), ((static_cast<uint64_t>(0xe61acf03) << 32) | static_cast<uint64_t>(0x3d1a45df)),
+        ((static_cast<uint64_t>(0xab70fe17) << 32) | static_cast<uint64_t>(0xc79ac6ca)), ((static_cast<uint64_t>(0xff77b1fc) << 32) | static_cast<uint64_t>(0xbebcdc4f)),
+        ((static_cast<uint64_t>(0xbe5691ef) << 32) | static_cast<uint64_t>(0x416bd60c)), ((static_cast<uint64_t>(0x8dd01fad) << 32) | static_cast<uint64_t>(0x907ffc3c)),
+        ((static_cast<uint64_t>(0xd3515c28) << 32) | static_cast<uint64_t>(0x31559a83)), ((static_cast<uint64_t>(0x9d71ac8f) << 32) | static_cast<uint64_t>(0xada6c9b5)),
+        ((static_cast<uint64_t>(0xea9c2277) << 32) | static_cast<uint64_t>(0x23ee8bcb)), ((static_cast<uint64_t>(0xaecc4991) << 32) | static_cast<uint64_t>(0x4078536d)),
+        ((static_cast<uint64_t>(0x823c1279) << 32) | static_cast<uint64_t>(0x5db6ce57)), ((static_cast<uint64_t>(0xc2109436) << 32) | static_cast<uint64_t>(0x4dfb5637)),
+        ((static_cast<uint64_t>(0x9096ea6f) << 32) | static_cast<uint64_t>(0x3848984f)), ((static_cast<uint64_t>(0xd77485cb) << 32) | static_cast<uint64_t>(0x25823ac7)),
+        ((static_cast<uint64_t>(0xa086cfcd) << 32) | static_cast<uint64_t>(0x97bf97f4)), ((static_cast<uint64_t>(0xef340a98) << 32) | static_cast<uint64_t>(0x172aace5)),
+        ((static_cast<uint64_t>(0xb23867fb) << 32) | static_cast<uint64_t>(0x2a35b28e)), ((static_cast<uint64_t>(0x84c8d4df) << 32) | static_cast<uint64_t>(0xd2c63f3b)),
+        ((static_cast<uint64_t>(0xc5dd4427) << 32) | static_cast<uint64_t>(0x1ad3cdba)), ((static_cast<uint64_t>(0x936b9fce) << 32) | static_cast<uint64_t>(0xbb25c996)),
+        ((static_cast<uint64_t>(0xdbac6c24) << 32) | static_cast<uint64_t>(0x7d62a584)), ((static_cast<uint64_t>(0xa3ab6658) << 32) | static_cast<uint64_t>(0x0d5fdaf6)),
+        ((static_cast<uint64_t>(0xf3e2f893) << 32) | static_cast<uint64_t>(0xdec3f126)), ((static_cast<uint64_t>(0xb5b5ada8) << 32) | static_cast<uint64_t>(0xaaff80b8)),
+        ((static_cast<uint64_t>(0x87625f05) << 32) | static_cast<uint64_t>(0x6c7c4a8b)), ((static_cast<uint64_t>(0xc9bcff60) << 32) | static_cast<uint64_t>(0x34c13053)),
+        ((static_cast<uint64_t>(0x964e858c) << 32) | static_cast<uint64_t>(0x91ba2655)), ((static_cast<uint64_t>(0xdff97724) << 32) | static_cast<uint64_t>(0x70297ebd)),
+        ((static_cast<uint64_t>(0xa6dfbd9f) << 32) | static_cast<uint64_t>(0xb8e5b88f)), ((static_cast<uint64_t>(0xf8a95fcf) << 32) | static_cast<uint64_t>(0x88747d94)),
+        ((static_cast<uint64_t>(0xb9447093) << 32) | static_cast<uint64_t>(0x8fa89bcf)), ((static_cast<uint64_t>(0x8a08f0f8) << 32) | static_cast<uint64_t>(0xbf0f156b)),
+        ((static_cast<uint64_t>(0xcdb02555) << 32) | static_cast<uint64_t>(0x653131b6)), ((static_cast<uint64_t>(0x993fe2c6) << 32) | static_cast<uint64_t>(0xd07b7fac)),
+        ((static_cast<uint64_t>(0xe45c10c4) << 32) | static_cast<uint64_t>(0x2a2b3b06)), ((static_cast<uint64_t>(0xaa242499) << 32) | static_cast<uint64_t>(0x697392d3)),
+        ((static_cast<uint64_t>(0xfd87b5f2) << 32) | static_cast<uint64_t>(0x8300ca0e)), ((static_cast<uint64_t>(0xbce50864) << 32) | static_cast<uint64_t>(0x92111aeb)),
+        ((static_cast<uint64_t>(0x8cbccc09) << 32) | static_cast<uint64_t>(0x6f5088cc)), ((static_cast<uint64_t>(0xd1b71758) << 32) | static_cast<uint64_t>(0xe219652c)),
+        ((static_cast<uint64_t>(0x9c400000) << 32) | static_cast<uint64_t>(0x00000000)), ((static_cast<uint64_t>(0xe8d4a510) << 32) | static_cast<uint64_t>(0x00000000)),
+        ((static_cast<uint64_t>(0xad78ebc5) << 32) | static_cast<uint64_t>(0xac620000)), ((static_cast<uint64_t>(0x813f3978) << 32) | static_cast<uint64_t>(0xf8940984)),
+        ((static_cast<uint64_t>(0xc097ce7b) << 32) | static_cast<uint64_t>(0xc90715b3)), ((static_cast<uint64_t>(0x8f7e32ce) << 32) | static_cast<uint64_t>(0x7bea5c70)),
+        ((static_cast<uint64_t>(0xd5d238a4) << 32) | static_cast<uint64_t>(0xabe98068)), ((static_cast<uint64_t>(0x9f4f2726) << 32) | static_cast<uint64_t>(0x179a2245)),
+        ((static_cast<uint64_t>(0xed63a231) << 32) | static_cast<uint64_t>(0xd4c4fb27)), ((static_cast<uint64_t>(0xb0de6538) << 32) | static_cast<uint64_t>(0x8cc8ada8)),
+        ((static_cast<uint64_t>(0x83c7088e) << 32) | static_cast<uint64_t>(0x1aab65db)), ((static_cast<uint64_t>(0xc45d1df9) << 32) | static_cast<uint64_t>(0x42711d9a)),
+        ((static_cast<uint64_t>(0x924d692c) << 32) | static_cast<uint64_t>(0xa61be758)), ((static_cast<uint64_t>(0xda01ee64) << 32) | static_cast<uint64_t>(0x1a708dea)),
+        ((static_cast<uint64_t>(0xa26da399) << 32) | static_cast<uint64_t>(0x9aef774a)), ((static_cast<uint64_t>(0xf209787b) << 32) | static_cast<uint64_t>(0xb47d6b85)),
+        ((static_cast<uint64_t>(0xb454e4a1) << 32) | static_cast<uint64_t>(0x79dd1877)), ((static_cast<uint64_t>(0x865b8692) << 32) | static_cast<uint64_t>(0x5b9bc5c2)),
+        ((static_cast<uint64_t>(0xc83553c5) << 32) | static_cast<uint64_t>(0xc8965d3d)), ((static_cast<uint64_t>(0x952ab45c) << 32) | static_cast<uint64_t>(0xfa97a0b3)),
+        ((static_cast<uint64_t>(0xde469fbd) << 32) | static_cast<uint64_t>(0x99a05fe3)), ((static_cast<uint64_t>(0xa59bc234) << 32) | static_cast<uint64_t>(0xdb398c25)),
+        ((static_cast<uint64_t>(0xf6c69a72) << 32) | static_cast<uint64_t>(0xa3989f5c)), ((static_cast<uint64_t>(0xb7dcbf53) << 32) | static_cast<uint64_t>(0x54e9bece)),
+        ((static_cast<uint64_t>(0x88fcf317) << 32) | static_cast<uint64_t>(0xf22241e2)), ((static_cast<uint64_t>(0xcc20ce9b) << 32) | static_cast<uint64_t>(0xd35c78a5)),
+        ((static_cast<uint64_t>(0x98165af3) << 32) | static_cast<uint64_t>(0x7b2153df)), ((static_cast<uint64_t>(0xe2a0b5dc) << 32) | static_cast<uint64_t>(0x971f303a)),
+        ((static_cast<uint64_t>(0xa8d9d153) << 32) | static_cast<uint64_t>(0x5ce3b396)), ((static_cast<uint64_t>(0xfb9b7cd9) << 32) | static_cast<uint64_t>(0xa4a7443c)),
+        ((static_cast<uint64_t>(0xbb764c4c) << 32) | static_cast<uint64_t>(0xa7a44410)), ((static_cast<uint64_t>(0x8bab8eef) << 32) | static_cast<uint64_t>(0xb6409c1a)),
+        ((static_cast<uint64_t>(0xd01fef10) << 32) | static_cast<uint64_t>(0xa657842c)), ((static_cast<uint64_t>(0x9b10a4e5) << 32) | static_cast<uint64_t>(0xe9913129)),
+        ((static_cast<uint64_t>(0xe7109bfb) << 32) | static_cast<uint64_t>(0xa19c0c9d)), ((static_cast<uint64_t>(0xac2820d9) << 32) | static_cast<uint64_t>(0x623bf429)),
+        ((static_cast<uint64_t>(0x80444b5e) << 32) | static_cast<uint64_t>(0x7aa7cf85)), ((static_cast<uint64_t>(0xbf21e440) << 32) | static_cast<uint64_t>(0x03acdd2d)),
+        ((static_cast<uint64_t>(0x8e679c2f) << 32) | static_cast<uint64_t>(0x5e44ff8f)), ((static_cast<uint64_t>(0xd433179d) << 32) | static_cast<uint64_t>(0x9c8cb841)),
+        ((static_cast<uint64_t>(0x9e19db92) << 32) | static_cast<uint64_t>(0xb4e31ba9)), ((static_cast<uint64_t>(0xeb96bf6e) << 32) | static_cast<uint64_t>(0xbadf77d9)),
+        ((static_cast<uint64_t>(0xaf87023b) << 32) | static_cast<uint64_t>(0x9bf0ee6b))
+    };
+    static const int16_t kCachedPowers_E[] = {
+        -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980,
+        -954, -927, -901, -874, -847, -821, -794, -768, -741, -715,
+        -688, -661, -635, -608, -582, -555, -529, -502, -475, -449,
+        -422, -396, -369, -343, -316, -289, -263, -236, -210, -183,
+        -157, -130, -103, -77, -50, -24, 3, 30, 56, 83,
+        109, 136, 162, 189, 216, 242, 269, 295, 322, 348,
+        375, 402, 428, 455, 481, 508, 534, 561, 588, 614,
+        641, 667, 694, 720, 747, 774, 800, 827, 853, 880,
+        907, 933, 960, 986, 1013, 1039, 1066
+    };
+    return DiyFp(kCachedPowers_F[index], kCachedPowers_E[index]);
+}
+
+inline DiyFp GetCachedPower(int e, int* K) {
+
+
+    double dk = (-61 - e) * 0.30102999566398114 + 347;
+    int k = static_cast<int>(dk);
+    if (dk - k > 0.0)
+        k++;
+
+    unsigned index = static_cast<unsigned>((k >> 3) + 1);
+    *K = -(-348 + static_cast<int>(index << 3));
+
+    return GetCachedPowerByIndex(index);
+}
+
+inline DiyFp GetCachedPower10(int exp, int *outExp) {
+     unsigned index = (exp + 348) / 8;
+     *outExp = -348 + index * 8;
+     return GetCachedPowerByIndex(index);
+ }
+
+
+
+
+
+
+}
+}
+namespace rapidjson {
+namespace internal {
+
+
+
+
+
+
+inline double Pow10(int n) {
+    static const double e[] = {
+        1e+0,
+        1e+1, 1e+2, 1e+3, 1e+4, 1e+5, 1e+6, 1e+7, 1e+8, 1e+9, 1e+10, 1e+11, 1e+12, 1e+13, 1e+14, 1e+15, 1e+16, 1e+17, 1e+18, 1e+19, 1e+20,
+        1e+21, 1e+22, 1e+23, 1e+24, 1e+25, 1e+26, 1e+27, 1e+28, 1e+29, 1e+30, 1e+31, 1e+32, 1e+33, 1e+34, 1e+35, 1e+36, 1e+37, 1e+38, 1e+39, 1e+40,
+        1e+41, 1e+42, 1e+43, 1e+44, 1e+45, 1e+46, 1e+47, 1e+48, 1e+49, 1e+50, 1e+51, 1e+52, 1e+53, 1e+54, 1e+55, 1e+56, 1e+57, 1e+58, 1e+59, 1e+60,
+        1e+61, 1e+62, 1e+63, 1e+64, 1e+65, 1e+66, 1e+67, 1e+68, 1e+69, 1e+70, 1e+71, 1e+72, 1e+73, 1e+74, 1e+75, 1e+76, 1e+77, 1e+78, 1e+79, 1e+80,
+        1e+81, 1e+82, 1e+83, 1e+84, 1e+85, 1e+86, 1e+87, 1e+88, 1e+89, 1e+90, 1e+91, 1e+92, 1e+93, 1e+94, 1e+95, 1e+96, 1e+97, 1e+98, 1e+99, 1e+100,
+        1e+101,1e+102,1e+103,1e+104,1e+105,1e+106,1e+107,1e+108,1e+109,1e+110,1e+111,1e+112,1e+113,1e+114,1e+115,1e+116,1e+117,1e+118,1e+119,1e+120,
+        1e+121,1e+122,1e+123,1e+124,1e+125,1e+126,1e+127,1e+128,1e+129,1e+130,1e+131,1e+132,1e+133,1e+134,1e+135,1e+136,1e+137,1e+138,1e+139,1e+140,
+        1e+141,1e+142,1e+143,1e+144,1e+145,1e+146,1e+147,1e+148,1e+149,1e+150,1e+151,1e+152,1e+153,1e+154,1e+155,1e+156,1e+157,1e+158,1e+159,1e+160,
+        1e+161,1e+162,1e+163,1e+164,1e+165,1e+166,1e+167,1e+168,1e+169,1e+170,1e+171,1e+172,1e+173,1e+174,1e+175,1e+176,1e+177,1e+178,1e+179,1e+180,
+        1e+181,1e+182,1e+183,1e+184,1e+185,1e+186,1e+187,1e+188,1e+189,1e+190,1e+191,1e+192,1e+193,1e+194,1e+195,1e+196,1e+197,1e+198,1e+199,1e+200,
+        1e+201,1e+202,1e+203,1e+204,1e+205,1e+206,1e+207,1e+208,1e+209,1e+210,1e+211,1e+212,1e+213,1e+214,1e+215,1e+216,1e+217,1e+218,1e+219,1e+220,
+        1e+221,1e+222,1e+223,1e+224,1e+225,1e+226,1e+227,1e+228,1e+229,1e+230,1e+231,1e+232,1e+233,1e+234,1e+235,1e+236,1e+237,1e+238,1e+239,1e+240,
+        1e+241,1e+242,1e+243,1e+244,1e+245,1e+246,1e+247,1e+248,1e+249,1e+250,1e+251,1e+252,1e+253,1e+254,1e+255,1e+256,1e+257,1e+258,1e+259,1e+260,
+        1e+261,1e+262,1e+263,1e+264,1e+265,1e+266,1e+267,1e+268,1e+269,1e+270,1e+271,1e+272,1e+273,1e+274,1e+275,1e+276,1e+277,1e+278,1e+279,1e+280,
+        1e+281,1e+282,1e+283,1e+284,1e+285,1e+286,1e+287,1e+288,1e+289,1e+290,1e+291,1e+292,1e+293,1e+294,1e+295,1e+296,1e+297,1e+298,1e+299,1e+300,
+        1e+301,1e+302,1e+303,1e+304,1e+305,1e+306,1e+307,1e+308
+    };
+    
+   (static_cast <bool> (
+   n >= 0 && n <= 308
+   ) ? void (0) : __assert_fail (
+   "n >= 0 && n <= 308"
+   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/pow10.h", 48, __extension__ __PRETTY_FUNCTION__))
+                                       ;
+    return e[n];
+}
+
+}
+}
+
+namespace rapidjson {
+namespace internal {
+
+inline double FastPath(double significand, int exp) {
+    if (exp < -308)
+        return 0.0;
+    else if (exp >= 0)
+        return significand * internal::Pow10(exp);
+    else
+        return significand / internal::Pow10(-exp);
+}
+
+inline double StrtodNormalPrecision(double d, int p) {
+    if (p < -308) {
+
+        d = FastPath(d, -308);
+        d = FastPath(d, p + 308);
+    }
+    else
+        d = FastPath(d, p);
+    return d;
+}
+
+template <typename T>
+inline T Min3(T a, T b, T c) {
+    T m = a;
+    if (m > b) m = b;
+    if (m > c) m = c;
+    return m;
+}
+
+inline int CheckWithinHalfULP(double b, const BigInteger& d, int dExp) {
+    const Double db(b);
+    const uint64_t bInt = db.IntegerSignificand();
+    const int bExp = db.IntegerExponent();
+    const int hExp = bExp - 1;
+
+    int dS_Exp2 = 0, dS_Exp5 = 0, bS_Exp2 = 0, bS_Exp5 = 0, hS_Exp2 = 0, hS_Exp5 = 0;
+
+
+    if (dExp >= 0) {
+        dS_Exp2 += dExp;
+        dS_Exp5 += dExp;
+    }
+    else {
+        bS_Exp2 -= dExp;
+        bS_Exp5 -= dExp;
+        hS_Exp2 -= dExp;
+        hS_Exp5 -= dExp;
+    }
+
+
+    if (bExp >= 0)
+        bS_Exp2 += bExp;
+    else {
+        dS_Exp2 -= bExp;
+        hS_Exp2 -= bExp;
+    }
+
+
+    if (hExp >= 0)
+        hS_Exp2 += hExp;
+    else {
+        dS_Exp2 -= hExp;
+        bS_Exp2 -= hExp;
+    }
+
+
+    int common_Exp2 = Min3(dS_Exp2, bS_Exp2, hS_Exp2);
+    dS_Exp2 -= common_Exp2;
+    bS_Exp2 -= common_Exp2;
+    hS_Exp2 -= common_Exp2;
+
+    BigInteger dS = d;
+    dS.MultiplyPow5(dS_Exp5) <<= dS_Exp2;
+
+    BigInteger bS(bInt);
+    bS.MultiplyPow5(bS_Exp5) <<= bS_Exp2;
+
+    BigInteger hS(1);
+    hS.MultiplyPow5(hS_Exp5) <<= hS_Exp2;
+
+    BigInteger delta(0);
+    dS.Difference(bS, &delta);
+
+    return delta.Compare(hS);
+}
+
+inline bool StrtodFast(double d, int p, double* result) {
+
+
+    if (p > 22 && p < 22 + 16) {
+
+        d *= internal::Pow10(p - 22);
+        p = 22;
+    }
+
+    if (p >= -22 && p <= 22 && d <= 9007199254740991.0) {
+        *result = FastPath(d, p);
+        return true;
+    }
+    else
+        return false;
+}
+
+
+inline bool StrtodDiyFp(const char* decimals, size_t length, size_t decimalPosition, int exp, double* result) {
+    uint64_t significand = 0;
+    size_t i = 0;
+    for (; i < length; i++) {
+        if (significand > ((static_cast<uint64_t>(0x19999999) << 32) | static_cast<uint64_t>(0x99999999)) ||
+            (significand == ((static_cast<uint64_t>(0x19999999) << 32) | static_cast<uint64_t>(0x99999999)) && decimals[i] > '5'))
+            break;
+        significand = significand * 10 + (decimals[i] - '0');
+    }
+
+    if (i < length && decimals[i] >= '5')
+        significand++;
+
+    size_t remaining = length - i;
+    const unsigned kUlpShift = 3;
+    const unsigned kUlp = 1 << kUlpShift;
+    int error = (remaining == 0) ? 0 : kUlp / 2;
+
+    DiyFp v(significand, 0);
+    v = v.Normalize();
+    error <<= -v.e;
+
+    const int dExp = (int)decimalPosition - (int)i + exp;
+
+    int actualExp;
+    DiyFp cachedPower = GetCachedPower10(dExp, &actualExp);
+    if (actualExp != dExp) {
+        static const DiyFp kPow10[] = {
+            DiyFp(((static_cast<uint64_t>(0xa0000000) << 32) | static_cast<uint64_t>(00000000)), -60),
+            DiyFp(((static_cast<uint64_t>(0xc8000000) << 32) | static_cast<uint64_t>(00000000)), -57),
+            DiyFp(((static_cast<uint64_t>(0xfa000000) << 32) | static_cast<uint64_t>(00000000)), -54),
+            DiyFp(((static_cast<uint64_t>(0x9c400000) << 32) | static_cast<uint64_t>(00000000)), -50),
+            DiyFp(((static_cast<uint64_t>(0xc3500000) << 32) | static_cast<uint64_t>(00000000)), -47),
+            DiyFp(((static_cast<uint64_t>(0xf4240000) << 32) | static_cast<uint64_t>(00000000)), -44),
+            DiyFp(((static_cast<uint64_t>(0x98968000) << 32) | static_cast<uint64_t>(00000000)), -40)
+        };
+        int adjustment = dExp - actualExp - 1;
+        
+       (static_cast <bool> (
+       adjustment >= 0 && adjustment < 7
+       ) ? void (0) : __assert_fail (
+       "adjustment >= 0 && adjustment < 7"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/strtod.h", 167, __extension__ __PRETTY_FUNCTION__))
+                                                          ;
+        v = v * kPow10[adjustment];
+        if (length + adjustment > 19)
+            error += kUlp / 2;
+    }
+
+    v = v * cachedPower;
+
+    error += kUlp + (error == 0 ? 0 : 1);
+
+    const int oldExp = v.e;
+    v = v.Normalize();
+    error <<= oldExp - v.e;
+
+    const unsigned effectiveSignificandSize = Double::EffectiveSignificandSize(64 + v.e);
+    unsigned precisionSize = 64 - effectiveSignificandSize;
+    if (precisionSize + kUlpShift >= 64) {
+        unsigned scaleExp = (precisionSize + kUlpShift) - 63;
+        v.f >>= scaleExp;
+        v.e += scaleExp;
+        error = (error >> scaleExp) + 1 + kUlp;
+        precisionSize -= scaleExp;
+    }
+
+    DiyFp rounded(v.f >> precisionSize, v.e + precisionSize);
+    const uint64_t precisionBits = (v.f & ((uint64_t(1) << precisionSize) - 1)) * kUlp;
+    const uint64_t halfWay = (uint64_t(1) << (precisionSize - 1)) * kUlp;
+    if (precisionBits >= halfWay + error) {
+        rounded.f++;
+        if (rounded.f & (DiyFp::kDpHiddenBit << 1)) {
+            rounded.f >>= 1;
+            rounded.e++;
+        }
+    }
+
+    *result = rounded.ToDouble();
+
+    return halfWay - error >= precisionBits || precisionBits >= halfWay + error;
+}
+
+inline double StrtodBigInteger(double approx, const char* decimals, size_t length, size_t decimalPosition, int exp) {
+    const BigInteger dInt(decimals, length);
+    const int dExp = (int)decimalPosition - (int)length + exp;
+    Double a(approx);
+    int cmp = CheckWithinHalfULP(a.Value(), dInt, dExp);
+    if (cmp < 0)
+        return a.Value();
+    else if (cmp == 0) {
+
+        if (a.Significand() & 1)
+            return a.NextPositiveDouble();
+        else
+            return a.Value();
+    }
+    else
+        return a.NextPositiveDouble();
+}
+
+inline double StrtodFullPrecision(double d, int p, const char* decimals, size_t length, size_t decimalPosition, int exp) {
+    
+   (static_cast <bool> (
+   d >= 0.0
+   ) ? void (0) : __assert_fail (
+   "d >= 0.0"
+   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/strtod.h", 226, __extension__ __PRETTY_FUNCTION__))
+                             ;
+    
+   (static_cast <bool> (
+   length >= 1
+   ) ? void (0) : __assert_fail (
+   "length >= 1"
+   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/internal/strtod.h", 227, __extension__ __PRETTY_FUNCTION__))
+                                ;
+
+    double result;
+    if (StrtodFast(d, p, &result))
+        return result;
+
+
+    while (*decimals == '0' && length > 1) {
+        length--;
+        decimals++;
+        decimalPosition--;
+    }
+
+
+    while (decimals[length - 1] == '0' && length > 1) {
+        length--;
+        decimalPosition--;
+        exp++;
+    }
+
+
+    const int kMaxDecimalDigit = 780;
+    if ((int)length > kMaxDecimalDigit) {
+        int delta = (int(length) - kMaxDecimalDigit);
+        exp += delta;
+        decimalPosition -= delta;
+        length = kMaxDecimalDigit;
+    }
+
+
+    if (int(length) + exp < -324)
+        return 0.0;
+
+    if (StrtodDiyFp(decimals, length, decimalPosition, exp, &result))
+        return result;
+
+
+    return StrtodBigInteger(result, decimals, length, decimalPosition, exp);
+}
+
+}
+}
+
+
+
+
+namespace rapidjson {
+enum ParseErrorCode {
+    kParseErrorNone = 0,
+
+    kParseErrorDocumentEmpty,
+    kParseErrorDocumentRootNotSingular,
+
+    kParseErrorValueInvalid,
+
+    kParseErrorObjectMissName,
+    kParseErrorObjectMissColon,
+    kParseErrorObjectMissCommaOrCurlyBracket,
+
+    kParseErrorArrayMissCommaOrSquareBracket,
+
+    kParseErrorStringUnicodeEscapeInvalidHex,
+    kParseErrorStringUnicodeSurrogateInvalid,
+    kParseErrorStringEscapeInvalid,
+    kParseErrorStringMissQuotationMark,
+    kParseErrorStringInvalidEncoding,
+
+    kParseErrorNumberTooBig,
+    kParseErrorNumberMissFraction,
+    kParseErrorNumberMissExponent,
+
+    kParseErrorTermination,
+    kParseErrorUnspecificSyntaxError
+};
+struct ParseResult {
+
+
+    ParseResult() : code_(kParseErrorNone), offset_(0) {}
+
+    ParseResult(ParseErrorCode code, size_t offset) : code_(code), offset_(offset) {}
+
+
+    ParseErrorCode Code() const { return code_; }
+
+    size_t Offset() const { return offset_; }
+
+
+    operator bool() const { return !IsError(); }
+
+    bool IsError() const { return code_ != kParseErrorNone; }
+
+    bool operator==(const ParseResult& that) const { return code_ == that.code_; }
+    bool operator==(ParseErrorCode code) const { return code_ == code; }
+    friend bool operator==(ParseErrorCode code, const ParseResult & err) { return code == err.code_; }
+
+
+    void Clear() { Set(kParseErrorNone); }
+
+    void Set(ParseErrorCode code, size_t offset = 0) { code_ = code; offset_ = offset; }
+
+private:
+    ParseErrorCode code_;
+    size_t offset_;
+};
+typedef const char* (*GetParseErrorFunc)(ParseErrorCode);
+
+}
+
+namespace rapidjson {
+enum ParseFlag {
+    kParseNoFlags = 0,
+    kParseInsituFlag = 1,
+    kParseValidateEncodingFlag = 2,
+    kParseIterativeFlag = 4,
+    kParseStopWhenDoneFlag = 8,
+    kParseFullPrecisionFlag = 16,
+    kParseDefaultFlags = kParseNoFlags
+};
+template<typename Encoding = UTF8<>, typename Derived = void>
+struct BaseReaderHandler {
+    typedef typename Encoding::Ch Ch;
+
+    typedef typename internal::SelectIf<internal::IsSame<Derived, void>, BaseReaderHandler, Derived>::Type Override;
+
+    bool Default() { return true; }
+    bool Null() { return static_cast<Override&>(*this).Default(); }
+    bool Bool(bool) { return static_cast<Override&>(*this).Default(); }
+    bool Int(int) { return static_cast<Override&>(*this).Default(); }
+    bool Uint(unsigned) { return static_cast<Override&>(*this).Default(); }
+    bool Int64(int64_t) { return static_cast<Override&>(*this).Default(); }
+    bool Uint64(uint64_t) { return static_cast<Override&>(*this).Default(); }
+    bool Double(double) { return static_cast<Override&>(*this).Default(); }
+    bool String(const Ch*, SizeType, bool) { return static_cast<Override&>(*this).Default(); }
+    bool StartObject() { return static_cast<Override&>(*this).Default(); }
+    bool Key(const Ch* str, SizeType len, bool copy) { return static_cast<Override&>(*this).String(str, len, copy); }
+    bool EndObject(SizeType) { return static_cast<Override&>(*this).Default(); }
+    bool StartArray() { return static_cast<Override&>(*this).Default(); }
+    bool EndArray(SizeType) { return static_cast<Override&>(*this).Default(); }
+};
+
+
+
+
+namespace internal {
+
+template<typename Stream, int = StreamTraits<Stream>::copyOptimization>
+class StreamLocalCopy;
+
+
+template<typename Stream>
+class StreamLocalCopy<Stream, 1> {
+public:
+    StreamLocalCopy(Stream& original) : s(original), original_(original) {}
+    ~StreamLocalCopy() { original_ = s; }
+
+    Stream s;
+
+private:
+    StreamLocalCopy& operator=(const StreamLocalCopy&) ;
+
+    Stream& original_;
+};
+
+
+template<typename Stream>
+class StreamLocalCopy<Stream, 0> {
+public:
+    StreamLocalCopy(Stream& original) : s(original) {}
+
+    Stream& s;
+
+private:
+    StreamLocalCopy& operator=(const StreamLocalCopy&) ;
+};
+
+}
+template<typename InputStream>
+void SkipWhitespace(InputStream& is) {
+    internal::StreamLocalCopy<InputStream> copy(is);
+    InputStream& s(copy.s);
+
+    while (s.Peek() == ' ' || s.Peek() == '\n' || s.Peek() == '\r' || s.Peek() == '\t')
+        s.Take();
+}
+template <typename SourceEncoding, typename TargetEncoding, typename StackAllocator = CrtAllocator>
+class GenericReader {
+public:
+    typedef typename SourceEncoding::Ch Ch;
+
+
+
+
+
+    GenericReader(StackAllocator* stackAllocator = 0, size_t stackCapacity = kDefaultStackCapacity) : stack_(stackAllocator, stackCapacity), parseResult_() {}
+    template <unsigned parseFlags, typename InputStream, typename Handler>
+    ParseResult Parse(InputStream& is, Handler& handler) {
+        if (parseFlags & kParseIterativeFlag)
+            return IterativeParse<parseFlags>(is, handler);
+
+        parseResult_.Clear();
+
+        ClearStackOnExit scope(*this);
+
+        SkipWhitespace(is);
+
+        if (is.Peek() == '\0') {
+            do { 
+           (static_cast <bool> (
+           !HasParseError()
+           ) ? void (0) : __assert_fail (
+           "!HasParseError()"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 404, __extension__ __PRETTY_FUNCTION__))
+           ; SetParseError(kParseErrorDocumentEmpty, is.Tell()); } while((void)0, 0);
+            do { if (HasParseError()) { return parseResult_; } } while((void)0, 0);
+        }
+        else {
+            ParseValue<parseFlags>(is, handler);
+            do { if (HasParseError()) { return parseResult_; } } while((void)0, 0);
+
+            if (!(parseFlags & kParseStopWhenDoneFlag)) {
+                SkipWhitespace(is);
+
+                if (is.Peek() != '\0') {
+                    do { 
+                   (static_cast <bool> (
+                   !HasParseError()
+                   ) ? void (0) : __assert_fail (
+                   "!HasParseError()"
+                   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 415, __extension__ __PRETTY_FUNCTION__))
+                   ; SetParseError(kParseErrorDocumentRootNotSingular, is.Tell()); } while((void)0, 0);
+                    do { if (HasParseError()) { return parseResult_; } } while((void)0, 0);
+                }
+            }
+        }
+
+        return parseResult_;
+    }
+    template <typename InputStream, typename Handler>
+    ParseResult Parse(InputStream& is, Handler& handler) {
+        return Parse<kParseDefaultFlags>(is, handler);
+    }
+
+
+    bool HasParseError() const { return parseResult_.IsError(); }
+
+
+    ParseErrorCode GetParseErrorCode() const { return parseResult_.Code(); }
+
+
+    size_t GetErrorOffset() const { return parseResult_.Offset(); }
+
+protected:
+    void SetParseError(ParseErrorCode code, size_t offset) { parseResult_.Set(code, offset); }
+
+private:
+
+    GenericReader(const GenericReader&);
+    GenericReader& operator=(const GenericReader&);
+
+    void ClearStack() { stack_.Clear(); }
+
+
+    struct ClearStackOnExit {
+        explicit ClearStackOnExit(GenericReader& r) : r_(r) {}
+        ~ClearStackOnExit() { r_.ClearStack(); }
+    private:
+        GenericReader& r_;
+        ClearStackOnExit(const ClearStackOnExit&);
+        ClearStackOnExit& operator=(const ClearStackOnExit&);
+    };
+
+
+    template<unsigned parseFlags, typename InputStream, typename Handler>
+    void ParseObject(InputStream& is, Handler& handler) {
+        
+       (static_cast <bool> (
+       is.Peek() == '{'
+       ) ? void (0) : __assert_fail (
+       "is.Peek() == '{'"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 468, __extension__ __PRETTY_FUNCTION__))
+                                         ;
+        is.Take();
+
+        if (!handler.StartObject())
+            do { do { 
+           (static_cast <bool> (
+           !HasParseError()
+           ) ? void (0) : __assert_fail (
+           "!HasParseError()"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 472, __extension__ __PRETTY_FUNCTION__))
+           ; SetParseError(kParseErrorTermination, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+
+        SkipWhitespace(is);
+
+        if (is.Peek() == '}') {
+            is.Take();
+            if (!handler.EndObject(0))
+                do { do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 479, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorTermination, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+            return;
+        }
+
+        for (SizeType memberCount = 0;;) {
+            if (is.Peek() != '"')
+                do { do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 485, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorObjectMissName, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+
+            ParseString<parseFlags>(is, handler, true);
+            do { if (HasParseError()) { return ; } } while((void)0, 0);
+
+            SkipWhitespace(is);
+
+            if (is.Take() != ':')
+                do { do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 493, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorObjectMissColon, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+
+            SkipWhitespace(is);
+
+            ParseValue<parseFlags>(is, handler);
+            do { if (HasParseError()) { return ; } } while((void)0, 0);
+
+            SkipWhitespace(is);
+
+            ++memberCount;
+
+            switch (is.Take()) {
+                case ',': SkipWhitespace(is); break;
+                case '}':
+                    if (!handler.EndObject(memberCount))
+                        do { do { 
+                       (static_cast <bool> (
+                       !HasParseError()
+                       ) ? void (0) : __assert_fail (
+                       "!HasParseError()"
+                       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 508, __extension__ __PRETTY_FUNCTION__))
+                       ; SetParseError(kParseErrorTermination, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+                    return;
+                default: do { do { 
+                         (static_cast <bool> (
+                         !HasParseError()
+                         ) ? void (0) : __assert_fail (
+                         "!HasParseError()"
+                         , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 510, __extension__ __PRETTY_FUNCTION__))
+                         ; SetParseError(kParseErrorObjectMissCommaOrCurlyBracket, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+            }
+        }
+    }
+
+
+    template<unsigned parseFlags, typename InputStream, typename Handler>
+    void ParseArray(InputStream& is, Handler& handler) {
+        
+       (static_cast <bool> (
+       is.Peek() == '['
+       ) ? void (0) : __assert_fail (
+       "is.Peek() == '['"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 518, __extension__ __PRETTY_FUNCTION__))
+                                         ;
+        is.Take();
+
+        if (!handler.StartArray())
+            do { do { 
+           (static_cast <bool> (
+           !HasParseError()
+           ) ? void (0) : __assert_fail (
+           "!HasParseError()"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 522, __extension__ __PRETTY_FUNCTION__))
+           ; SetParseError(kParseErrorTermination, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+
+        SkipWhitespace(is);
+
+        if (is.Peek() == ']') {
+            is.Take();
+            if (!handler.EndArray(0))
+                do { do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 529, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorTermination, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+            return;
+        }
+
+        for (SizeType elementCount = 0;;) {
+            ParseValue<parseFlags>(is, handler);
+            do { if (HasParseError()) { return ; } } while((void)0, 0);
+
+            ++elementCount;
+            SkipWhitespace(is);
+
+            switch (is.Take()) {
+                case ',': SkipWhitespace(is); break;
+                case ']':
+                    if (!handler.EndArray(elementCount))
+                        do { do { 
+                       (static_cast <bool> (
+                       !HasParseError()
+                       ) ? void (0) : __assert_fail (
+                       "!HasParseError()"
+                       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 544, __extension__ __PRETTY_FUNCTION__))
+                       ; SetParseError(kParseErrorTermination, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+                    return;
+                default: do { do { 
+                         (static_cast <bool> (
+                         !HasParseError()
+                         ) ? void (0) : __assert_fail (
+                         "!HasParseError()"
+                         , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 546, __extension__ __PRETTY_FUNCTION__))
+                         ; SetParseError(kParseErrorArrayMissCommaOrSquareBracket, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+            }
+        }
+    }
+
+    template<unsigned parseFlags, typename InputStream, typename Handler>
+    void ParseNull(InputStream& is, Handler& handler) {
+        
+       (static_cast <bool> (
+       is.Peek() == 'n'
+       ) ? void (0) : __assert_fail (
+       "is.Peek() == 'n'"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 553, __extension__ __PRETTY_FUNCTION__))
+                                         ;
+        is.Take();
+
+        if (is.Take() == 'u' && is.Take() == 'l' && is.Take() == 'l') {
+            if (!handler.Null())
+                do { do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 558, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorTermination, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+        }
+        else
+            do { do { 
+           (static_cast <bool> (
+           !HasParseError()
+           ) ? void (0) : __assert_fail (
+           "!HasParseError()"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 561, __extension__ __PRETTY_FUNCTION__))
+           ; SetParseError(kParseErrorValueInvalid, is.Tell() - 1); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+    }
+
+    template<unsigned parseFlags, typename InputStream, typename Handler>
+    void ParseTrue(InputStream& is, Handler& handler) {
+        
+       (static_cast <bool> (
+       is.Peek() == 't'
+       ) ? void (0) : __assert_fail (
+       "is.Peek() == 't'"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 566, __extension__ __PRETTY_FUNCTION__))
+                                         ;
+        is.Take();
+
+        if (is.Take() == 'r' && is.Take() == 'u' && is.Take() == 'e') {
+            if (!handler.Bool(true))
+                do { do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 571, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorTermination, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+        }
+        else
+            do { do { 
+           (static_cast <bool> (
+           !HasParseError()
+           ) ? void (0) : __assert_fail (
+           "!HasParseError()"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 574, __extension__ __PRETTY_FUNCTION__))
+           ; SetParseError(kParseErrorValueInvalid, is.Tell() - 1); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+    }
+
+    template<unsigned parseFlags, typename InputStream, typename Handler>
+    void ParseFalse(InputStream& is, Handler& handler) {
+        
+       (static_cast <bool> (
+       is.Peek() == 'f'
+       ) ? void (0) : __assert_fail (
+       "is.Peek() == 'f'"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 579, __extension__ __PRETTY_FUNCTION__))
+                                         ;
+        is.Take();
+
+        if (is.Take() == 'a' && is.Take() == 'l' && is.Take() == 's' && is.Take() == 'e') {
+            if (!handler.Bool(false))
+                do { do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 584, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorTermination, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+        }
+        else
+            do { do { 
+           (static_cast <bool> (
+           !HasParseError()
+           ) ? void (0) : __assert_fail (
+           "!HasParseError()"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 587, __extension__ __PRETTY_FUNCTION__))
+           ; SetParseError(kParseErrorValueInvalid, is.Tell() - 1); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+    }
+
+
+    template<typename InputStream>
+    unsigned ParseHex4(InputStream& is) {
+        unsigned codepoint = 0;
+        for (int i = 0; i < 4; i++) {
+            Ch c = is.Take();
+            codepoint <<= 4;
+            codepoint += static_cast<unsigned>(c);
+            if (c >= '0' && c <= '9')
+                codepoint -= '0';
+            else if (c >= 'A' && c <= 'F')
+                codepoint -= 'A' - 10;
+            else if (c >= 'a' && c <= 'f')
+                codepoint -= 'a' - 10;
+            else {
+                do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 605, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorStringUnicodeEscapeInvalidHex, is.Tell() - 1); } while((void)0, 0);
+                do { if (HasParseError()) { return 0; } } while((void)0, 0);
+            }
+        }
+        return codepoint;
+    }
+
+    template <typename CharType>
+    class StackStream {
+    public:
+        typedef CharType Ch;
+
+        StackStream(internal::Stack<StackAllocator>& stack) : stack_(stack), length_(0) {}
+        __attribute__((always_inline)) void Put(Ch c) {
+            *stack_.template Push<Ch>() = c;
+            ++length_;
+        }
+        size_t Length() const { return length_; }
+        Ch* Pop() {
+            return stack_.template Pop<Ch>(length_);
+        }
+
+    private:
+        StackStream(const StackStream&);
+        StackStream& operator=(const StackStream&);
+
+        internal::Stack<StackAllocator>& stack_;
+        SizeType length_;
+    };
+
+
+    template<unsigned parseFlags, typename InputStream, typename Handler>
+    void ParseString(InputStream& is, Handler& handler, bool isKey = false) {
+        internal::StreamLocalCopy<InputStream> copy(is);
+        InputStream& s(copy.s);
+
+        bool success = false;
+        if (parseFlags & kParseInsituFlag) {
+            typename InputStream::Ch *head = s.PutBegin();
+            ParseStringToStream<parseFlags, SourceEncoding, SourceEncoding>(s, s);
+            do { if (HasParseError()) { return ; } } while((void)0, 0);
+            size_t length = s.PutEnd(head) - 1;
+            
+           (static_cast <bool> (
+           length <= 0xFFFFFFFF
+           ) ? void (0) : __assert_fail (
+           "length <= 0xFFFFFFFF"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 647, __extension__ __PRETTY_FUNCTION__))
+                                                 ;
+            const typename TargetEncoding::Ch* const str = (typename TargetEncoding::Ch*)head;
+            success = (isKey ? handler.Key(str, SizeType(length), false) : handler.String(str, SizeType(length), false));
+        }
+        else {
+            StackStream<typename TargetEncoding::Ch> stackStream(stack_);
+            ParseStringToStream<parseFlags, SourceEncoding, TargetEncoding>(s, stackStream);
+            do { if (HasParseError()) { return ; } } while((void)0, 0);
+            SizeType length = static_cast<SizeType>(stackStream.Length()) - 1;
+            const typename TargetEncoding::Ch* const str = stackStream.Pop();
+            success = (isKey ? handler.Key(str, length, true) : handler.String(str, length, true));
+        }
+        if (!success)
+            do { do { 
+           (static_cast <bool> (
+           !HasParseError()
+           ) ? void (0) : __assert_fail (
+           "!HasParseError()"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 660, __extension__ __PRETTY_FUNCTION__))
+           ; SetParseError(kParseErrorTermination, s.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+    }
+
+
+
+    template<unsigned parseFlags, typename SEncoding, typename TEncoding, typename InputStream, typename OutputStream>
+    __attribute__((always_inline)) void ParseStringToStream(InputStream& is, OutputStream& os) {
+
+
+        static const char escape[256] = {
+            0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0, 0,'\"', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,'/',
+            0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,'\\', 0, 0, 0,
+            0, 0,'\b', 0, 0, 0,'\f', 0, 0, 0, 0, 0, 0, 0,'\n', 0,
+            0, 0,'\r', 0,'\t', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+            0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+        };
+
+
+
+        
+       (static_cast <bool> (
+       is.Peek() == '\"'
+       ) ? void (0) : __assert_fail (
+       "is.Peek() == '\\\"'"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 679, __extension__ __PRETTY_FUNCTION__))
+                                          ;
+        is.Take();
+
+        for (;;) {
+            Ch c = is.Peek();
+            if (c == '\\') {
+                is.Take();
+                Ch e = is.Take();
+                if ((sizeof(Ch) == 1 || unsigned(e) < 256) && escape[(unsigned char)e]) {
+                    os.Put(escape[(unsigned char)e]);
+                }
+                else if (e == 'u') {
+                    unsigned codepoint = ParseHex4(is);
+                    do { if (HasParseError()) { return ; } } while((void)0, 0);
+                    if (codepoint >= 0xD800 && codepoint <= 0xDBFF) {
+
+                        if (is.Take() != '\\' || is.Take() != 'u')
+                            do { do { 
+                           (static_cast <bool> (
+                           !HasParseError()
+                           ) ? void (0) : __assert_fail (
+                           "!HasParseError()"
+                           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 696, __extension__ __PRETTY_FUNCTION__))
+                           ; SetParseError(kParseErrorStringUnicodeSurrogateInvalid, is.Tell() - 2); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+                        unsigned codepoint2 = ParseHex4(is);
+                        do { if (HasParseError()) { return ; } } while((void)0, 0);
+                        if (codepoint2 < 0xDC00 || codepoint2 > 0xDFFF)
+                            do { do { 
+                           (static_cast <bool> (
+                           !HasParseError()
+                           ) ? void (0) : __assert_fail (
+                           "!HasParseError()"
+                           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 700, __extension__ __PRETTY_FUNCTION__))
+                           ; SetParseError(kParseErrorStringUnicodeSurrogateInvalid, is.Tell() - 2); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+                        codepoint = (((codepoint - 0xD800) << 10) | (codepoint2 - 0xDC00)) + 0x10000;
+                    }
+                    TEncoding::Encode(os, codepoint);
+                }
+                else
+                    do { do { 
+                   (static_cast <bool> (
+                   !HasParseError()
+                   ) ? void (0) : __assert_fail (
+                   "!HasParseError()"
+                   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 706, __extension__ __PRETTY_FUNCTION__))
+                   ; SetParseError(kParseErrorStringEscapeInvalid, is.Tell() - 1); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+            }
+            else if (c == '"') {
+                is.Take();
+                os.Put('\0');
+                return;
+            }
+            else if (c == '\0')
+                do { do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 714, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorStringMissQuotationMark, is.Tell() - 1); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+            else if ((unsigned)c < 0x20)
+                do { do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 716, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorStringEscapeInvalid, is.Tell() - 1); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+            else {
+                if (parseFlags & kParseValidateEncodingFlag ?
+                    !Transcoder<SEncoding, TEncoding>::Validate(is, os) :
+                    !Transcoder<SEncoding, TEncoding>::Transcode(is, os))
+                    do { do { 
+                   (static_cast <bool> (
+                   !HasParseError()
+                   ) ? void (0) : __assert_fail (
+                   "!HasParseError()"
+                   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 721, __extension__ __PRETTY_FUNCTION__))
+                   ; SetParseError(kParseErrorStringInvalidEncoding, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+            }
+        }
+    }
+
+    template<typename InputStream, bool backup>
+    class NumberStream;
+
+    template<typename InputStream>
+    class NumberStream<InputStream, false> {
+    public:
+        NumberStream(GenericReader& reader, InputStream& s) : is(s) { (void)reader; }
+        ~NumberStream() {}
+
+        __attribute__((always_inline)) Ch Peek() const { return is.Peek(); }
+        __attribute__((always_inline)) Ch TakePush() { return is.Take(); }
+        __attribute__((always_inline)) Ch Take() { return is.Take(); }
+        size_t Tell() { return is.Tell(); }
+        size_t Length() { return 0; }
+        const char* Pop() { return 0; }
+
+    protected:
+        NumberStream& operator=(const NumberStream&);
+
+        InputStream& is;
+    };
+
+    template<typename InputStream>
+    class NumberStream<InputStream, true> : public NumberStream<InputStream, false> {
+        typedef NumberStream<InputStream, false> Base;
+    public:
+        NumberStream(GenericReader& reader, InputStream& is) : NumberStream<InputStream, false>(reader, is), stackStream(reader.stack_) {}
+        ~NumberStream() {}
+
+        __attribute__((always_inline)) Ch TakePush() {
+            stackStream.Put((char)Base::is.Peek());
+            return Base::is.Take();
+        }
+
+        size_t Length() { return stackStream.Length(); }
+
+        const char* Pop() {
+            stackStream.Put('\0');
+            return stackStream.Pop();
+        }
+
+    private:
+        StackStream<char> stackStream;
+    };
+
+    template<unsigned parseFlags, typename InputStream, typename Handler>
+    void ParseNumber(InputStream& is, Handler& handler) {
+        internal::StreamLocalCopy<InputStream> copy(is);
+        NumberStream<InputStream, (parseFlags & kParseFullPrecisionFlag) != 0> s(*this, copy.s);
+
+
+        bool minus = false;
+        if (s.Peek() == '-') {
+            minus = true;
+            s.Take();
+        }
+
+
+        unsigned i = 0;
+        uint64_t i64 = 0;
+        bool use64bit = false;
+        int significandDigit = 0;
+        if (s.Peek() == '0') {
+            i = 0;
+            s.TakePush();
+        }
+        else if (s.Peek() >= '1' && s.Peek() <= '9') {
+            i = static_cast<unsigned>(s.TakePush() - '0');
+
+            if (minus)
+                while (s.Peek() >= '0' && s.Peek() <= '9') {
+                    if (i >= 214748364) {
+                        if (i != 214748364 || s.Peek() > '8') {
+                            i64 = i;
+                            use64bit = true;
+                            break;
+                        }
+                    }
+                    i = i * 10 + static_cast<unsigned>(s.TakePush() - '0');
+                    significandDigit++;
+                }
+            else
+                while (s.Peek() >= '0' && s.Peek() <= '9') {
+                    if (i >= 429496729) {
+                        if (i != 429496729 || s.Peek() > '5') {
+                            i64 = i;
+                            use64bit = true;
+                            break;
+                        }
+                    }
+                    i = i * 10 + static_cast<unsigned>(s.TakePush() - '0');
+                    significandDigit++;
+                }
+        }
+        else
+            do { do { 
+           (static_cast <bool> (
+           !HasParseError()
+           ) ? void (0) : __assert_fail (
+           "!HasParseError()"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 821, __extension__ __PRETTY_FUNCTION__))
+           ; SetParseError(kParseErrorValueInvalid, s.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+
+
+        bool useDouble = false;
+        double d = 0.0;
+        if (use64bit) {
+            if (minus)
+                while (s.Peek() >= '0' && s.Peek() <= '9') {
+                     if (i64 >= ((static_cast<uint64_t>(0x0CCCCCCC) << 32) | static_cast<uint64_t>(0xCCCCCCCC)))
+                        if (i64 != ((static_cast<uint64_t>(0x0CCCCCCC) << 32) | static_cast<uint64_t>(0xCCCCCCCC)) || s.Peek() > '8') {
+                            d = i64;
+                            useDouble = true;
+                            break;
+                        }
+                    i64 = i64 * 10 + static_cast<unsigned>(s.TakePush() - '0');
+                    significandDigit++;
+                }
+            else
+                while (s.Peek() >= '0' && s.Peek() <= '9') {
+                    if (i64 >= ((static_cast<uint64_t>(0x19999999) << 32) | static_cast<uint64_t>(0x99999999)))
+                        if (i64 != ((static_cast<uint64_t>(0x19999999) << 32) | static_cast<uint64_t>(0x99999999)) || s.Peek() > '5') {
+                            d = i64;
+                            useDouble = true;
+                            break;
+                        }
+                    i64 = i64 * 10 + static_cast<unsigned>(s.TakePush() - '0');
+                    significandDigit++;
+                }
+        }
+
+
+        if (useDouble) {
+            while (s.Peek() >= '0' && s.Peek() <= '9') {
+                if (d >= 1.7976931348623157e307)
+                    do { do { 
+                   (static_cast <bool> (
+                   !HasParseError()
+                   ) ? void (0) : __assert_fail (
+                   "!HasParseError()"
+                   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 855, __extension__ __PRETTY_FUNCTION__))
+                   ; SetParseError(kParseErrorNumberTooBig, s.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+                d = d * 10 + (s.TakePush() - '0');
+            }
+        }
+
+
+        int expFrac = 0;
+        size_t decimalPosition;
+        if (s.Peek() == '.') {
+            s.Take();
+            decimalPosition = s.Length();
+
+            if (!(s.Peek() >= '0' && s.Peek() <= '9'))
+                do { do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 868, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorNumberMissFraction, s.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+
+            if (!useDouble) {
+
+
+                if (!use64bit)
+                    i64 = i;
+
+                while (s.Peek() >= '0' && s.Peek() <= '9') {
+                    if (i64 > ((static_cast<uint64_t>(0x1FFFFF) << 32) | static_cast<uint64_t>(0xFFFFFFFF)))
+                        break;
+                    else {
+                        i64 = i64 * 10 + static_cast<unsigned>(s.TakePush() - '0');
+                        --expFrac;
+                        if (i64 != 0)
+                            significandDigit++;
+                    }
+                }
+
+                d = (double)i64;
+
+
+
+
+                useDouble = true;
+            }
+
+            while (s.Peek() >= '0' && s.Peek() <= '9') {
+                if (significandDigit < 17) {
+                    d = d * 10.0 + (s.TakePush() - '0');
+                    --expFrac;
+                    if (d > 0.0)
+                        significandDigit++;
+                }
+                else
+                    s.TakePush();
+            }
+        }
+        else
+            decimalPosition = s.Length();
+
+
+        int exp = 0;
+        if (s.Peek() == 'e' || s.Peek() == 'E') {
+            if (!useDouble) {
+                d = use64bit ? i64 : i;
+                useDouble = true;
+            }
+            s.Take();
+
+            bool expMinus = false;
+            if (s.Peek() == '+')
+                s.Take();
+            else if (s.Peek() == '-') {
+                s.Take();
+                expMinus = true;
+            }
+
+            if (s.Peek() >= '0' && s.Peek() <= '9') {
+                exp = s.Take() - '0';
+                if (expMinus) {
+                    while (s.Peek() >= '0' && s.Peek() <= '9') {
+                        exp = exp * 10 + (s.Take() - '0');
+                        if (exp >= 214748364) {
+                            while (s.Peek() >= '0' && s.Peek() <= '9')
+                                s.Take();
+                        }
+                    }
+                }
+                else {
+                    int maxExp = 308 - expFrac;
+                    while (s.Peek() >= '0' && s.Peek() <= '9') {
+                        exp = exp * 10 + (s.Take() - '0');
+                        if (exp > maxExp)
+                            do { do { 
+                           (static_cast <bool> (
+                           !HasParseError()
+                           ) ? void (0) : __assert_fail (
+                           "!HasParseError()"
+                           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 942, __extension__ __PRETTY_FUNCTION__))
+                           ; SetParseError(kParseErrorNumberTooBig, s.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+                    }
+                }
+            }
+            else
+                do { do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 947, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorNumberMissExponent, s.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+
+            if (expMinus)
+                exp = -exp;
+        }
+
+
+        bool cont = true;
+        size_t length = s.Length();
+        const char* decimal = s.Pop();
+
+        if (useDouble) {
+            int p = exp + expFrac;
+            if (parseFlags & kParseFullPrecisionFlag)
+                d = internal::StrtodFullPrecision(d, p, decimal, length, decimalPosition, exp);
+            else
+                d = internal::StrtodNormalPrecision(d, p);
+
+            cont = handler.Double(minus ? -d : d);
+        }
+        else {
+            if (use64bit) {
+                if (minus)
+                    cont = handler.Int64(static_cast<int64_t>(~i64 + 1));
+                else
+                    cont = handler.Uint64(i64);
+            }
+            else {
+                if (minus)
+                    cont = handler.Int(static_cast<int32_t>(~i + 1));
+                else
+                    cont = handler.Uint(i);
+            }
+        }
+        if (!cont)
+            do { do { 
+           (static_cast <bool> (
+           !HasParseError()
+           ) ? void (0) : __assert_fail (
+           "!HasParseError()"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 982, __extension__ __PRETTY_FUNCTION__))
+           ; SetParseError(kParseErrorTermination, s.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+    }
+
+
+    template<unsigned parseFlags, typename InputStream, typename Handler>
+    void ParseValue(InputStream& is, Handler& handler) {
+        switch (is.Peek()) {
+            case 'n': ParseNull <parseFlags>(is, handler); break;
+            case 't': ParseTrue <parseFlags>(is, handler); break;
+            case 'f': ParseFalse <parseFlags>(is, handler); break;
+            case '"': ParseString<parseFlags>(is, handler); break;
+            case '{': ParseObject<parseFlags>(is, handler); break;
+            case '[': ParseArray <parseFlags>(is, handler); break;
+            default : ParseNumber<parseFlags>(is, handler);
+        }
+    }
+
+
+
+
+    enum IterativeParsingState {
+        IterativeParsingStartState = 0,
+        IterativeParsingFinishState,
+        IterativeParsingErrorState,
+
+
+        IterativeParsingObjectInitialState,
+        IterativeParsingMemberKeyState,
+        IterativeParsingKeyValueDelimiterState,
+        IterativeParsingMemberValueState,
+        IterativeParsingMemberDelimiterState,
+        IterativeParsingObjectFinishState,
+
+
+        IterativeParsingArrayInitialState,
+        IterativeParsingElementState,
+        IterativeParsingElementDelimiterState,
+        IterativeParsingArrayFinishState,
+
+
+        IterativeParsingValueState,
+
+        cIterativeParsingStateCount
+    };
+
+
+    enum Token {
+        LeftBracketToken = 0,
+        RightBracketToken,
+
+        LeftCurlyBracketToken,
+        RightCurlyBracketToken,
+
+        CommaToken,
+        ColonToken,
+
+        StringToken,
+        FalseToken,
+        TrueToken,
+        NullToken,
+        NumberToken,
+
+        kTokenCount
+    };
+
+    __attribute__((always_inline)) Token Tokenize(Ch c) {
+
+
+
+
+
+        static const unsigned char tokenMap[256] = {
+            NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,
+            NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,
+            NumberToken, NumberToken, StringToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, CommaToken, NumberToken, NumberToken, NumberToken,
+            NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, ColonToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken,
+            NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,
+            NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, LeftBracketToken, NumberToken, RightBracketToken, NumberToken, NumberToken,
+            NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, FalseToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NullToken, NumberToken,
+            NumberToken, NumberToken, NumberToken, NumberToken, TrueToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, NumberToken, LeftCurlyBracketToken, NumberToken, RightCurlyBracketToken, NumberToken, NumberToken,
+            NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken, NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken, NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken, NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken, NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken, NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken, NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken, NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken,NumberToken
+        };
+
+
+
+
+        if (sizeof(Ch) == 1 || unsigned(c) < 256)
+            return (Token)tokenMap[(unsigned char)c];
+        else
+            return NumberToken;
+    }
+
+    __attribute__((always_inline)) IterativeParsingState Predict(IterativeParsingState state, Token token) {
+
+        static const char G[cIterativeParsingStateCount][kTokenCount] = {
+
+            {
+                IterativeParsingArrayInitialState,
+                IterativeParsingErrorState,
+                IterativeParsingObjectInitialState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingValueState,
+                IterativeParsingValueState,
+                IterativeParsingValueState,
+                IterativeParsingValueState,
+                IterativeParsingValueState
+            },
+
+            {
+                IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState,
+                IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState,
+                IterativeParsingErrorState
+            },
+
+            {
+                IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState,
+                IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState,
+                IterativeParsingErrorState
+            },
+
+            {
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingObjectFinishState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingMemberKeyState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState
+            },
+
+            {
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingKeyValueDelimiterState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState
+            },
+
+            {
+                IterativeParsingArrayInitialState,
+                IterativeParsingErrorState,
+                IterativeParsingObjectInitialState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingMemberValueState,
+                IterativeParsingMemberValueState,
+                IterativeParsingMemberValueState,
+                IterativeParsingMemberValueState,
+                IterativeParsingMemberValueState
+            },
+
+            {
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingObjectFinishState,
+                IterativeParsingMemberDelimiterState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState
+            },
+
+            {
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingMemberKeyState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState
+            },
+
+            {
+                IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState,
+                IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState,
+                IterativeParsingErrorState
+            },
+
+            {
+                IterativeParsingArrayInitialState,
+                IterativeParsingArrayFinishState,
+                IterativeParsingObjectInitialState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingElementState,
+                IterativeParsingElementState,
+                IterativeParsingElementState,
+                IterativeParsingElementState,
+                IterativeParsingElementState
+            },
+
+            {
+                IterativeParsingErrorState,
+                IterativeParsingArrayFinishState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingElementDelimiterState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState
+            },
+
+            {
+                IterativeParsingArrayInitialState,
+                IterativeParsingErrorState,
+                IterativeParsingObjectInitialState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingErrorState,
+                IterativeParsingElementState,
+                IterativeParsingElementState,
+                IterativeParsingElementState,
+                IterativeParsingElementState,
+                IterativeParsingElementState
+            },
+
+            {
+                IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState,
+                IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState,
+                IterativeParsingErrorState
+            },
+
+            {
+                IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState,
+                IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState, IterativeParsingErrorState,
+                IterativeParsingErrorState
+            }
+        };
+
+        return (IterativeParsingState)G[state][token];
+    }
+
+
+
+    template <unsigned parseFlags, typename InputStream, typename Handler>
+    __attribute__((always_inline)) IterativeParsingState Transit(IterativeParsingState src, Token token, IterativeParsingState dst, InputStream& is, Handler& handler) {
+        (void)token;
+
+        switch (dst) {
+        case IterativeParsingErrorState:
+            return dst;
+
+        case IterativeParsingObjectInitialState:
+        case IterativeParsingArrayInitialState:
+        {
+
+
+            IterativeParsingState n = src;
+            if (src == IterativeParsingArrayInitialState || src == IterativeParsingElementDelimiterState)
+                n = IterativeParsingElementState;
+            else if (src == IterativeParsingKeyValueDelimiterState)
+                n = IterativeParsingMemberValueState;
+
+            *stack_.template Push<SizeType>(1) = n;
+
+            *stack_.template Push<SizeType>(1) = 0;
+
+            bool hr = (dst == IterativeParsingObjectInitialState) ? handler.StartObject() : handler.StartArray();
+
+            if (!hr) {
+                do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 1266, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorTermination, is.Tell()); } while((void)0, 0);
+                return IterativeParsingErrorState;
+            }
+            else {
+                is.Take();
+                return dst;
+            }
+        }
+
+        case IterativeParsingMemberKeyState:
+            ParseString<parseFlags>(is, handler, true);
+            if (HasParseError())
+                return IterativeParsingErrorState;
+            else
+                return dst;
+
+        case IterativeParsingKeyValueDelimiterState:
+            
+           (static_cast <bool> (
+           token == ColonToken
+           ) ? void (0) : __assert_fail (
+           "token == ColonToken"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 1283, __extension__ __PRETTY_FUNCTION__))
+                                                ;
+            is.Take();
+            return dst;
+
+        case IterativeParsingMemberValueState:
+
+            ParseValue<parseFlags>(is, handler);
+            if (HasParseError()) {
+                return IterativeParsingErrorState;
+            }
+            return dst;
+
+        case IterativeParsingElementState:
+
+            ParseValue<parseFlags>(is, handler);
+            if (HasParseError()) {
+                return IterativeParsingErrorState;
+            }
+            return dst;
+
+        case IterativeParsingMemberDelimiterState:
+        case IterativeParsingElementDelimiterState:
+            is.Take();
+
+            *stack_.template Top<SizeType>() = *stack_.template Top<SizeType>() + 1;
+            return dst;
+
+        case IterativeParsingObjectFinishState:
+        {
+
+            SizeType c = *stack_.template Pop<SizeType>(1);
+
+            if (src == IterativeParsingMemberValueState)
+                ++c;
+
+            IterativeParsingState n = static_cast<IterativeParsingState>(*stack_.template Pop<SizeType>(1));
+
+            if (n == IterativeParsingStartState)
+                n = IterativeParsingFinishState;
+
+            bool hr = handler.EndObject(c);
+
+            if (!hr) {
+                do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 1326, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorTermination, is.Tell()); } while((void)0, 0);
+                return IterativeParsingErrorState;
+            }
+            else {
+                is.Take();
+                return n;
+            }
+        }
+
+        case IterativeParsingArrayFinishState:
+        {
+
+            SizeType c = *stack_.template Pop<SizeType>(1);
+
+            if (src == IterativeParsingElementState)
+                ++c;
+
+            IterativeParsingState n = static_cast<IterativeParsingState>(*stack_.template Pop<SizeType>(1));
+
+            if (n == IterativeParsingStartState)
+                n = IterativeParsingFinishState;
+
+            bool hr = handler.EndArray(c);
+
+            if (!hr) {
+                do { 
+               (static_cast <bool> (
+               !HasParseError()
+               ) ? void (0) : __assert_fail (
+               "!HasParseError()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 1351, __extension__ __PRETTY_FUNCTION__))
+               ; SetParseError(kParseErrorTermination, is.Tell()); } while((void)0, 0);
+                return IterativeParsingErrorState;
+            }
+            else {
+                is.Take();
+                return n;
+            }
+        }
+
+        default:
+            
+           (static_cast <bool> (
+           dst == IterativeParsingValueState
+           ) ? void (0) : __assert_fail (
+           "dst == IterativeParsingValueState"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 1371, __extension__ __PRETTY_FUNCTION__))
+                                                              ;
+
+
+            ParseValue<parseFlags>(is, handler);
+            if (HasParseError()) {
+                return IterativeParsingErrorState;
+            }
+            return IterativeParsingFinishState;
+        }
+    }
+
+    template <typename InputStream>
+    void HandleError(IterativeParsingState src, InputStream& is) {
+        if (HasParseError()) {
+
+            return;
+        }
+
+        switch (src) {
+        case IterativeParsingStartState: do { do { 
+                                                   (static_cast <bool> (
+                                                   !HasParseError()
+                                                   ) ? void (0) : __assert_fail (
+                                                   "!HasParseError()"
+                                                   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 1390, __extension__ __PRETTY_FUNCTION__))
+                                                   ; SetParseError(kParseErrorDocumentEmpty, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+        case IterativeParsingFinishState: do { do { 
+                                                   (static_cast <bool> (
+                                                   !HasParseError()
+                                                   ) ? void (0) : __assert_fail (
+                                                   "!HasParseError()"
+                                                   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 1391, __extension__ __PRETTY_FUNCTION__))
+                                                   ; SetParseError(kParseErrorDocumentRootNotSingular, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+        case IterativeParsingObjectInitialState:
+        case IterativeParsingMemberDelimiterState: do { do { 
+                                                   (static_cast <bool> (
+                                                   !HasParseError()
+                                                   ) ? void (0) : __assert_fail (
+                                                   "!HasParseError()"
+                                                   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 1393, __extension__ __PRETTY_FUNCTION__))
+                                                   ; SetParseError(kParseErrorObjectMissName, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+        case IterativeParsingMemberKeyState: do { do { 
+                                                   (static_cast <bool> (
+                                                   !HasParseError()
+                                                   ) ? void (0) : __assert_fail (
+                                                   "!HasParseError()"
+                                                   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 1394, __extension__ __PRETTY_FUNCTION__))
+                                                   ; SetParseError(kParseErrorObjectMissColon, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+        case IterativeParsingMemberValueState: do { do { 
+                                                   (static_cast <bool> (
+                                                   !HasParseError()
+                                                   ) ? void (0) : __assert_fail (
+                                                   "!HasParseError()"
+                                                   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 1395, __extension__ __PRETTY_FUNCTION__))
+                                                   ; SetParseError(kParseErrorObjectMissCommaOrCurlyBracket, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+        case IterativeParsingElementState: do { do { 
+                                                   (static_cast <bool> (
+                                                   !HasParseError()
+                                                   ) ? void (0) : __assert_fail (
+                                                   "!HasParseError()"
+                                                   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 1396, __extension__ __PRETTY_FUNCTION__))
+                                                   ; SetParseError(kParseErrorArrayMissCommaOrSquareBracket, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+        default: do { do { 
+                                                   (static_cast <bool> (
+                                                   !HasParseError()
+                                                   ) ? void (0) : __assert_fail (
+                                                   "!HasParseError()"
+                                                   , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/reader.h", 1397, __extension__ __PRETTY_FUNCTION__))
+                                                   ; SetParseError(kParseErrorUnspecificSyntaxError, is.Tell()); } while((void)0, 0); do { if (HasParseError()) { return ; } } while((void)0, 0); } while((void)0, 0);
+        }
+    }
+
+    template <unsigned parseFlags, typename InputStream, typename Handler>
+    ParseResult IterativeParse(InputStream& is, Handler& handler) {
+        parseResult_.Clear();
+        ClearStackOnExit scope(*this);
+        IterativeParsingState state = IterativeParsingStartState;
+
+        SkipWhitespace(is);
+        while (is.Peek() != '\0') {
+            Token t = Tokenize(is.Peek());
+            IterativeParsingState n = Predict(state, t);
+            IterativeParsingState d = Transit<parseFlags>(state, t, n, is, handler);
+
+            if (d == IterativeParsingErrorState) {
+                HandleError(state, is);
+                break;
+            }
+
+            state = d;
+
+
+            if ((parseFlags & kParseStopWhenDoneFlag) && state == IterativeParsingFinishState)
+                break;
+
+            SkipWhitespace(is);
+        }
+
+
+        if (state != IterativeParsingFinishState)
+            HandleError(state, is);
+
+        return parseResult_;
+    }
+
+    static const size_t kDefaultStackCapacity = 256;
+    internal::Stack<StackAllocator> stack_;
+    ParseResult parseResult_;
+};
+
+
+typedef GenericReader<UTF8<>, UTF8<> > Reader;
+
+}
+
+
+
+
+
+namespace rapidjson {
+namespace internal {
+
+
+
+
+
+
+
+template <typename Ch>
+inline SizeType StrLen(const Ch* s) {
+    const Ch* p = s;
+    while (*p) ++p;
+    return SizeType(p - s);
+}
+
+template <>
+inline SizeType StrLen(const char *s) {
+    return strlen(s);
+}
+}
+}
+       
+
+
+       
+
+
+
+       
+
+
+
+
+
+extern "C++" {
+
+namespace std
+{
+  class exception
+  {
+  public:
+    exception() noexcept { }
+    virtual ~exception() noexcept;
+
+
+
+    virtual const char*
+    what() const noexcept;
+  };
+
+}
+
+}
+
+
+extern "C++" {
+
+namespace std
+{
+
+
+  class bad_exception : public exception
+  {
+  public:
+    bad_exception() noexcept { }
+
+
+
+    virtual ~bad_exception() noexcept;
+
+
+    virtual const char*
+    what() const noexcept;
+  };
+
+
+  typedef void (*terminate_handler) ();
+
+
+  typedef void (*unexpected_handler) ();
+
+
+  terminate_handler set_terminate(terminate_handler) noexcept;
+
+
+
+  terminate_handler get_terminate() noexcept;
+
+
+
+
+  void terminate() noexcept __attribute__ ((__noreturn__));
+
+
+  unexpected_handler set_unexpected(unexpected_handler) noexcept;
+
+
+
+  unexpected_handler get_unexpected() noexcept;
+
+
+
+
+  void unexpected() __attribute__ ((__noreturn__));
+ 
+  bool uncaught_exception() noexcept __attribute__ ((__pure__));
+
+
+
+
+  int uncaught_exceptions() noexcept __attribute__ ((__pure__));
+
+
+
+}
+
+namespace __gnu_cxx
+{
+
+  void __verbose_terminate_handler();
+
+
+}
+
+}
+
+
+
+
+
+       
+
+
+typedef long int ptrdiff_t;
+typedef struct {
+  long long __max_align_ll __attribute__((__aligned__(__alignof__(long long))));
+  long double __max_align_ld __attribute__((__aligned__(__alignof__(long double))));
+} max_align_t;
+
+
+
+
+
+
+  typedef decltype(nullptr) nullptr_t;
+namespace std
+{
+  class type_info;
+}
+
+namespace __cxxabiv1
+{
+  struct __cxa_refcounted_exception;
+
+  extern "C"
+    {
+
+      void*
+      __cxa_allocate_exception(size_t) noexcept;
+
+
+      __cxa_refcounted_exception*
+      __cxa_init_primary_exception(void *object, std::type_info *tinfo,
+                void ( *dest) (void *)) noexcept;
+
+    }
+}
+
+
+
+       
+
+
+
+       
+
+
+
+namespace std
+{
+
+
+
+
+
+
+
+  size_t
+  _Hash_bytes(const void* __ptr, size_t __len, size_t __seed);
+
+
+
+
+
+  size_t
+  _Fnv_hash_bytes(const void* __ptr, size_t __len, size_t __seed);
+
+
+}
+
+
+
+extern "C++" {
+
+namespace __cxxabiv1
+{
+  class __class_type_info;
+}
+namespace std
+{
+
+
+
+
+
+
+  class type_info
+  {
+  public:
+
+
+
+
+    virtual ~type_info();
+
+
+
+    const char* name() const noexcept
+    { return __name[0] == '*' ? __name + 1 : __name; }
+    bool before(const type_info& __arg) const noexcept
+    { return (__name[0] == '*' && __arg.__name[0] == '*')
+ ? __name < __arg.__name
+ : __builtin_strcmp (__name, __arg.__name) < 0; }
+
+    bool operator==(const type_info& __arg) const noexcept
+    {
+      return ((__name == __arg.__name)
+       || (__name[0] != '*' &&
+    __builtin_strcmp (__name, __arg.__name) == 0));
+    }
+    bool operator!=(const type_info& __arg) const noexcept
+    { return !operator==(__arg); }
+
+
+    size_t hash_code() const noexcept
+    {
+
+      return _Hash_bytes(name(), __builtin_strlen(name()),
+    static_cast<size_t>(0xc70f6907UL));
+
+
+
+    }
+
+
+
+    virtual bool __is_pointer_p() const;
+
+
+    virtual bool __is_function_p() const;
+
+
+
+
+
+
+
+    virtual bool __do_catch(const type_info *__thr_type, void **__thr_obj,
+       unsigned __outer) const;
+
+
+    virtual bool __do_upcast(const __cxxabiv1::__class_type_info *__target,
+        void **__obj_ptr) const;
+
+  protected:
+    const char *__name;
+
+    explicit type_info(const char *__n): __name(__n) { }
+
+  private:
+
+    type_info& operator=(const type_info&);
+    type_info(const type_info&);
+  };
+
+
+
+
+
+
+
+  class bad_cast : public exception
+  {
+  public:
+    bad_cast() noexcept { }
+
+
+
+    virtual ~bad_cast() noexcept;
+
+
+    virtual const char* what() const noexcept;
+  };
+
+
+
+
+
+  class bad_typeid : public exception
+  {
+  public:
+    bad_typeid () noexcept { }
+
+
+
+    virtual ~bad_typeid() noexcept;
+
+
+    virtual const char* what() const noexcept;
+  };
+}
+
+}
+
+
+extern "C++" {
+
+namespace std
+{
+  class type_info;
+
+
+
+
+
+  namespace __exception_ptr
+  {
+    class exception_ptr;
+  }
+
+  using __exception_ptr::exception_ptr;
+
+
+
+
+
+  exception_ptr current_exception() noexcept;
+
+  template<typename _Ex>
+  exception_ptr make_exception_ptr(_Ex) noexcept;
+
+
+  void rethrow_exception(exception_ptr) __attribute__ ((__noreturn__));
+
+  namespace __exception_ptr
+  {
+    using std::rethrow_exception;
+
+
+
+
+
+    class exception_ptr
+    {
+      void* _M_exception_object;
+
+      explicit exception_ptr(void* __e) noexcept;
+
+      void _M_addref() noexcept;
+      void _M_release() noexcept;
+
+      void *_M_get() const noexcept __attribute__ ((__pure__));
+
+      friend exception_ptr std::current_exception() noexcept;
+      friend void std::rethrow_exception(exception_ptr);
+      template<typename _Ex>
+      friend exception_ptr std::make_exception_ptr(_Ex) noexcept;
+
+    public:
+      exception_ptr() noexcept;
+
+      exception_ptr(const exception_ptr&) noexcept;
+
+
+      exception_ptr(nullptr_t) noexcept
+      : _M_exception_object(0)
+      { }
+
+      exception_ptr(exception_ptr&& __o) noexcept
+      : _M_exception_object(__o._M_exception_object)
+      { __o._M_exception_object = 0; }
+      exception_ptr&
+      operator=(const exception_ptr&) noexcept;
+
+
+      exception_ptr&
+      operator=(exception_ptr&& __o) noexcept
+      {
+        exception_ptr(static_cast<exception_ptr&&>(__o)).swap(*this);
+        return *this;
+      }
+
+
+      ~exception_ptr() noexcept;
+
+      void
+      swap(exception_ptr&) noexcept;
+      explicit operator bool() const
+      { return _M_exception_object; }
+
+
+      friend bool
+      operator==(const exception_ptr&, const exception_ptr&)
+ noexcept __attribute__ ((__pure__));
+
+      const class std::type_info*
+      __cxa_exception_type() const noexcept
+ __attribute__ ((__pure__));
+    };
+
+    bool
+    operator==(const exception_ptr&, const exception_ptr&)
+      noexcept __attribute__ ((__pure__));
+
+    bool
+    operator!=(const exception_ptr&, const exception_ptr&)
+      noexcept __attribute__ ((__pure__));
+
+    inline void
+    swap(exception_ptr& __lhs, exception_ptr& __rhs)
+    { __lhs.swap(__rhs); }
+
+    template<typename _Ex>
+      inline void
+      __dest_thunk(void* __x)
+      { static_cast<_Ex*>(__x)->~_Ex(); }
+
+  }
+
+
+  template<typename _Ex>
+    exception_ptr
+    make_exception_ptr(_Ex __ex) noexcept
+    {
+
+      try
+ {
+
+          void *__e = __cxxabiv1::__cxa_allocate_exception(sizeof(_Ex));
+          (void)__cxxabiv1::__cxa_init_primary_exception(
+       __e, const_cast<std::type_info*>(&typeid(__ex)),
+       __exception_ptr::__dest_thunk<_Ex>);
+          ::new (__e) _Ex(__ex);
+          return exception_ptr(__e);
+
+
+
+ }
+      catch(...)
+ {
+   return current_exception();
+ }
+
+
+
+    }
+
+
+}
+
+}
+
+
+
+
+
+
+
+       
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+
+  template<typename _Tp>
+    inline constexpr _Tp*
+    __addressof(_Tp& __r) noexcept
+    { return __builtin_addressof(__r); }
+
+
+
+
+}
+
+       
+namespace std
+{
+  typedef short unsigned int uint_least16_t;
+  typedef unsigned int uint_least32_t;
+}
+
+
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _Tp, _Tp __v>
+    struct integral_constant
+    {
+      static constexpr _Tp value = __v;
+      typedef _Tp value_type;
+      typedef integral_constant<_Tp, __v> type;
+      constexpr operator value_type() const noexcept { return value; }
+
+
+
+
+      constexpr value_type operator()() const noexcept { return value; }
+
+    };
+
+  template<typename _Tp, _Tp __v>
+    constexpr _Tp integral_constant<_Tp, __v>::value;
+
+
+  typedef integral_constant<bool, true> true_type;
+
+
+  typedef integral_constant<bool, false> false_type;
+
+  template<bool __v>
+    using __bool_constant = integral_constant<bool, __v>;
+  template<bool, typename, typename>
+    struct conditional;
+
+  template<typename...>
+    struct __or_;
+
+  template<>
+    struct __or_<>
+    : public false_type
+    { };
+
+  template<typename _B1>
+    struct __or_<_B1>
+    : public _B1
+    { };
+
+  template<typename _B1, typename _B2>
+    struct __or_<_B1, _B2>
+    : public conditional<_B1::value, _B1, _B2>::type
+    { };
+
+  template<typename _B1, typename _B2, typename _B3, typename... _Bn>
+    struct __or_<_B1, _B2, _B3, _Bn...>
+    : public conditional<_B1::value, _B1, __or_<_B2, _B3, _Bn...>>::type
+    { };
+
+  template<typename...>
+    struct __and_;
+
+  template<>
+    struct __and_<>
+    : public true_type
+    { };
+
+  template<typename _B1>
+    struct __and_<_B1>
+    : public _B1
+    { };
+
+  template<typename _B1, typename _B2>
+    struct __and_<_B1, _B2>
+    : public conditional<_B1::value, _B2, _B1>::type
+    { };
+
+  template<typename _B1, typename _B2, typename _B3, typename... _Bn>
+    struct __and_<_B1, _B2, _B3, _Bn...>
+    : public conditional<_B1::value, __and_<_B2, _B3, _Bn...>, _B1>::type
+    { };
+
+  template<typename _Pp>
+    struct __not_
+    : public __bool_constant<!bool(_Pp::value)>
+    { };
+  template<typename _Tp>
+    struct __success_type
+    { typedef _Tp type; };
+
+  struct __failure_type
+  { };
+
+
+
+  template<typename>
+    struct remove_cv;
+
+  template<typename>
+    struct __is_void_helper
+    : public false_type { };
+
+  template<>
+    struct __is_void_helper<void>
+    : public true_type { };
+
+
+  template<typename _Tp>
+    struct is_void
+    : public __is_void_helper<typename remove_cv<_Tp>::type>::type
+    { };
+
+  template<typename>
+    struct __is_integral_helper
+    : public false_type { };
+
+  template<>
+    struct __is_integral_helper<bool>
+    : public true_type { };
+
+  template<>
+    struct __is_integral_helper<char>
+    : public true_type { };
+
+  template<>
+    struct __is_integral_helper<signed char>
+    : public true_type { };
+
+  template<>
+    struct __is_integral_helper<unsigned char>
+    : public true_type { };
+
+
+  template<>
+    struct __is_integral_helper<wchar_t>
+    : public true_type { };
+
+
+  template<>
+    struct __is_integral_helper<char16_t>
+    : public true_type { };
+
+  template<>
+    struct __is_integral_helper<char32_t>
+    : public true_type { };
+
+  template<>
+    struct __is_integral_helper<short>
+    : public true_type { };
+
+  template<>
+    struct __is_integral_helper<unsigned short>
+    : public true_type { };
+
+  template<>
+    struct __is_integral_helper<int>
+    : public true_type { };
+
+  template<>
+    struct __is_integral_helper<unsigned int>
+    : public true_type { };
+
+  template<>
+    struct __is_integral_helper<long>
+    : public true_type { };
+
+  template<>
+    struct __is_integral_helper<unsigned long>
+    : public true_type { };
+
+  template<>
+    struct __is_integral_helper<long long>
+    : public true_type { };
+
+  template<>
+    struct __is_integral_helper<unsigned long long>
+    : public true_type { };
+
+
+
+
+  template<>
+    struct __is_integral_helper<__int128>
+    : public true_type { };
+
+  template<>
+    struct __is_integral_helper<unsigned __int128>
+    : public true_type { };
+  template<typename _Tp>
+    struct is_integral
+    : public __is_integral_helper<typename remove_cv<_Tp>::type>::type
+    { };
+
+  template<typename>
+    struct __is_floating_point_helper
+    : public false_type { };
+
+  template<>
+    struct __is_floating_point_helper<float>
+    : public true_type { };
+
+  template<>
+    struct __is_floating_point_helper<double>
+    : public true_type { };
+
+  template<>
+    struct __is_floating_point_helper<long double>
+    : public true_type { };
+
+
+  template<>
+    struct __is_floating_point_helper<__float128>
+    : public true_type { };
+
+
+
+  template<typename _Tp>
+    struct is_floating_point
+    : public __is_floating_point_helper<typename remove_cv<_Tp>::type>::type
+    { };
+
+
+  template<typename>
+    struct is_array
+    : public false_type { };
+
+  template<typename _Tp, std::size_t _Size>
+    struct is_array<_Tp[_Size]>
+    : public true_type { };
+
+  template<typename _Tp>
+    struct is_array<_Tp[]>
+    : public true_type { };
+
+  template<typename>
+    struct __is_pointer_helper
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_pointer_helper<_Tp*>
+    : public true_type { };
+
+
+  template<typename _Tp>
+    struct is_pointer
+    : public __is_pointer_helper<typename remove_cv<_Tp>::type>::type
+    { };
+
+
+  template<typename>
+    struct is_lvalue_reference
+    : public false_type { };
+
+  template<typename _Tp>
+    struct is_lvalue_reference<_Tp&>
+    : public true_type { };
+
+
+  template<typename>
+    struct is_rvalue_reference
+    : public false_type { };
+
+  template<typename _Tp>
+    struct is_rvalue_reference<_Tp&&>
+    : public true_type { };
+
+  template<typename>
+    struct is_function;
+
+  template<typename>
+    struct __is_member_object_pointer_helper
+    : public false_type { };
+
+  template<typename _Tp, typename _Cp>
+    struct __is_member_object_pointer_helper<_Tp _Cp::*>
+    : public integral_constant<bool, !is_function<_Tp>::value> { };
+
+
+  template<typename _Tp>
+    struct is_member_object_pointer
+    : public __is_member_object_pointer_helper<
+    typename remove_cv<_Tp>::type>::type
+    { };
+
+  template<typename>
+    struct __is_member_function_pointer_helper
+    : public false_type { };
+
+  template<typename _Tp, typename _Cp>
+    struct __is_member_function_pointer_helper<_Tp _Cp::*>
+    : public integral_constant<bool, is_function<_Tp>::value> { };
+
+
+  template<typename _Tp>
+    struct is_member_function_pointer
+    : public __is_member_function_pointer_helper<
+    typename remove_cv<_Tp>::type>::type
+    { };
+
+
+  template<typename _Tp>
+    struct is_enum
+    : public integral_constant<bool, __is_enum(_Tp)>
+    { };
+
+
+  template<typename _Tp>
+    struct is_union
+    : public integral_constant<bool, __is_union(_Tp)>
+    { };
+
+
+  template<typename _Tp>
+    struct is_class
+    : public integral_constant<bool, __is_class(_Tp)>
+    { };
+
+
+  template<typename>
+    struct is_function
+    : public false_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes...) >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes...) & >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes...) && >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes......) >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes......) & >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes......) && >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes...) const >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes...) const & >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes...) const && >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes......) const >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes......) const & >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes......) const && >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes...) volatile >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes...) volatile & >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes...) volatile && >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes......) volatile >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes......) volatile & >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes......) volatile && >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes...) const volatile >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes...) const volatile & >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes...) const volatile && >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes......) const volatile >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes......) const volatile & >
+    : public true_type { };
+
+  template<typename _Res, typename... _ArgTypes >
+    struct is_function<_Res(_ArgTypes......) const volatile && >
+    : public true_type { };
+
+
+
+  template<typename>
+    struct __is_null_pointer_helper
+    : public false_type { };
+
+  template<>
+    struct __is_null_pointer_helper<std::nullptr_t>
+    : public true_type { };
+
+
+  template<typename _Tp>
+    struct is_null_pointer
+    : public __is_null_pointer_helper<typename remove_cv<_Tp>::type>::type
+    { };
+
+
+  template<typename _Tp>
+    struct __is_nullptr_t
+    : public is_null_pointer<_Tp>
+    { };
+
+
+
+
+  template<typename _Tp>
+    struct is_reference
+    : public __or_<is_lvalue_reference<_Tp>,
+                   is_rvalue_reference<_Tp>>::type
+    { };
+
+
+  template<typename _Tp>
+    struct is_arithmetic
+    : public __or_<is_integral<_Tp>, is_floating_point<_Tp>>::type
+    { };
+
+
+  template<typename _Tp>
+    struct is_fundamental
+    : public __or_<is_arithmetic<_Tp>, is_void<_Tp>,
+     is_null_pointer<_Tp>>::type
+    { };
+
+
+  template<typename _Tp>
+    struct is_object
+    : public __not_<__or_<is_function<_Tp>, is_reference<_Tp>,
+                          is_void<_Tp>>>::type
+    { };
+
+  template<typename>
+    struct is_member_pointer;
+
+
+  template<typename _Tp>
+    struct is_scalar
+    : public __or_<is_arithmetic<_Tp>, is_enum<_Tp>, is_pointer<_Tp>,
+                   is_member_pointer<_Tp>, is_null_pointer<_Tp>>::type
+    { };
+
+
+  template<typename _Tp>
+    struct is_compound
+    : public integral_constant<bool, !is_fundamental<_Tp>::value> { };
+
+  template<typename _Tp>
+    struct __is_member_pointer_helper
+    : public false_type { };
+
+  template<typename _Tp, typename _Cp>
+    struct __is_member_pointer_helper<_Tp _Cp::*>
+    : public true_type { };
+
+
+  template<typename _Tp>
+    struct is_member_pointer
+    : public __is_member_pointer_helper<typename remove_cv<_Tp>::type>::type
+    { };
+
+
+
+  template<typename _Tp>
+    struct __is_referenceable
+    : public __or_<is_object<_Tp>, is_reference<_Tp>>::type
+    { };
+
+  template<typename _Res, typename... _Args >
+    struct __is_referenceable<_Res(_Args...) >
+    : public true_type
+    { };
+
+  template<typename _Res, typename... _Args >
+    struct __is_referenceable<_Res(_Args......) >
+    : public true_type
+    { };
+
+
+
+
+  template<typename>
+    struct is_const
+    : public false_type { };
+
+  template<typename _Tp>
+    struct is_const<_Tp const>
+    : public true_type { };
+
+
+  template<typename>
+    struct is_volatile
+    : public false_type { };
+
+  template<typename _Tp>
+    struct is_volatile<_Tp volatile>
+    : public true_type { };
+
+
+  template<typename _Tp>
+    struct is_trivial
+    : public integral_constant<bool, __is_trivial(_Tp)>
+    { };
+
+
+  template<typename _Tp>
+    struct is_trivially_copyable
+    : public integral_constant<bool, __is_trivially_copyable(_Tp)>
+    { };
+
+
+  template<typename _Tp>
+    struct is_standard_layout
+    : public integral_constant<bool, __is_standard_layout(_Tp)>
+    { };
+
+
+
+  template<typename _Tp>
+    struct is_pod
+    : public integral_constant<bool, __is_pod(_Tp)>
+    { };
+
+
+  template<typename _Tp>
+    struct is_literal_type
+    : public integral_constant<bool, __is_literal_type(_Tp)>
+    { };
+
+
+  template<typename _Tp>
+    struct is_empty
+    : public integral_constant<bool, __is_empty(_Tp)>
+    { };
+
+
+  template<typename _Tp>
+    struct is_polymorphic
+    : public integral_constant<bool, __is_polymorphic(_Tp)>
+    { };
+
+
+
+
+  template<typename _Tp>
+    struct is_final
+    : public integral_constant<bool, __is_final(_Tp)>
+    { };
+
+
+
+  template<typename _Tp>
+    struct is_abstract
+    : public integral_constant<bool, __is_abstract(_Tp)>
+    { };
+
+  template<typename _Tp,
+    bool = is_arithmetic<_Tp>::value>
+    struct __is_signed_helper
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_signed_helper<_Tp, true>
+    : public integral_constant<bool, _Tp(-1) < _Tp(0)>
+    { };
+
+
+  template<typename _Tp>
+    struct is_signed
+    : public __is_signed_helper<_Tp>::type
+    { };
+
+
+  template<typename _Tp>
+    struct is_unsigned
+    : public __and_<is_arithmetic<_Tp>, __not_<is_signed<_Tp>>>
+    { };
+  template<typename _Tp, typename _Up = _Tp&&>
+    _Up
+    __declval(int);
+
+  template<typename _Tp>
+    _Tp
+    __declval(long);
+
+  template<typename _Tp>
+    auto declval() noexcept -> decltype(__declval<_Tp>(0));
+
+  template<typename, unsigned = 0>
+    struct extent;
+
+  template<typename>
+    struct remove_all_extents;
+
+  template<typename _Tp>
+    struct __is_array_known_bounds
+    : public integral_constant<bool, (extent<_Tp>::value > 0)>
+    { };
+
+  template<typename _Tp>
+    struct __is_array_unknown_bounds
+    : public __and_<is_array<_Tp>, __not_<extent<_Tp>>>
+    { };
+
+
+
+
+
+
+  struct __do_is_destructible_impl
+  {
+    template<typename _Tp, typename = decltype(declval<_Tp&>().~_Tp())>
+      static true_type __test(int);
+
+    template<typename>
+      static false_type __test(...);
+  };
+
+  template<typename _Tp>
+    struct __is_destructible_impl
+    : public __do_is_destructible_impl
+    {
+      typedef decltype(__test<_Tp>(0)) type;
+    };
+
+  template<typename _Tp,
+           bool = __or_<is_void<_Tp>,
+                        __is_array_unknown_bounds<_Tp>,
+                        is_function<_Tp>>::value,
+           bool = __or_<is_reference<_Tp>, is_scalar<_Tp>>::value>
+    struct __is_destructible_safe;
+
+  template<typename _Tp>
+    struct __is_destructible_safe<_Tp, false, false>
+    : public __is_destructible_impl<typename
+               remove_all_extents<_Tp>::type>::type
+    { };
+
+  template<typename _Tp>
+    struct __is_destructible_safe<_Tp, true, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_destructible_safe<_Tp, false, true>
+    : public true_type { };
+
+
+  template<typename _Tp>
+    struct is_destructible
+    : public __is_destructible_safe<_Tp>::type
+    { };
+
+
+
+
+
+  struct __do_is_nt_destructible_impl
+  {
+    template<typename _Tp>
+      static integral_constant<bool, noexcept(declval<_Tp&>().~_Tp())>
+        __test(int);
+
+    template<typename>
+      static false_type __test(...);
+  };
+
+  template<typename _Tp>
+    struct __is_nt_destructible_impl
+    : public __do_is_nt_destructible_impl
+    {
+      typedef decltype(__test<_Tp>(0)) type;
+    };
+
+  template<typename _Tp,
+           bool = __or_<is_void<_Tp>,
+                        __is_array_unknown_bounds<_Tp>,
+                        is_function<_Tp>>::value,
+           bool = __or_<is_reference<_Tp>, is_scalar<_Tp>>::value>
+    struct __is_nt_destructible_safe;
+
+  template<typename _Tp>
+    struct __is_nt_destructible_safe<_Tp, false, false>
+    : public __is_nt_destructible_impl<typename
+               remove_all_extents<_Tp>::type>::type
+    { };
+
+  template<typename _Tp>
+    struct __is_nt_destructible_safe<_Tp, true, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_nt_destructible_safe<_Tp, false, true>
+    : public true_type { };
+
+
+  template<typename _Tp>
+    struct is_nothrow_destructible
+    : public __is_nt_destructible_safe<_Tp>::type
+    { };
+
+  struct __do_is_default_constructible_impl
+  {
+    template<typename _Tp, typename = decltype(_Tp())>
+      static true_type __test(int);
+
+    template<typename>
+      static false_type __test(...);
+  };
+
+  template<typename _Tp>
+    struct __is_default_constructible_impl
+    : public __do_is_default_constructible_impl
+    {
+      typedef decltype(__test<_Tp>(0)) type;
+    };
+
+  template<typename _Tp>
+    struct __is_default_constructible_atom
+    : public __and_<__not_<is_void<_Tp>>,
+                    __is_default_constructible_impl<_Tp>>
+    { };
+
+  template<typename _Tp, bool = is_array<_Tp>::value>
+    struct __is_default_constructible_safe;
+
+
+
+
+
+
+  template<typename _Tp>
+    struct __is_default_constructible_safe<_Tp, true>
+    : public __and_<__is_array_known_bounds<_Tp>,
+      __is_default_constructible_atom<typename
+                      remove_all_extents<_Tp>::type>>
+    { };
+
+  template<typename _Tp>
+    struct __is_default_constructible_safe<_Tp, false>
+    : public __is_default_constructible_atom<_Tp>::type
+    { };
+
+
+  template<typename _Tp>
+    struct is_default_constructible
+    : public __is_default_constructible_safe<_Tp>::type
+    { };
+
+
+  template<typename _Tp, typename... _Args>
+    struct is_constructible
+      : public __bool_constant<__is_constructible(_Tp, _Args...)>
+    { };
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __is_copy_constructible_impl;
+
+  template<typename _Tp>
+    struct __is_copy_constructible_impl<_Tp, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_copy_constructible_impl<_Tp, true>
+    : public is_constructible<_Tp, const _Tp&>
+    { };
+
+
+  template<typename _Tp>
+    struct is_copy_constructible
+    : public __is_copy_constructible_impl<_Tp>
+    { };
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __is_move_constructible_impl;
+
+  template<typename _Tp>
+    struct __is_move_constructible_impl<_Tp, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_move_constructible_impl<_Tp, true>
+    : public is_constructible<_Tp, _Tp&&>
+    { };
+
+
+  template<typename _Tp>
+    struct is_move_constructible
+    : public __is_move_constructible_impl<_Tp>
+    { };
+
+  template<typename _Tp>
+    struct __is_nt_default_constructible_atom
+    : public integral_constant<bool, noexcept(_Tp())>
+    { };
+
+  template<typename _Tp, bool = is_array<_Tp>::value>
+    struct __is_nt_default_constructible_impl;
+
+  template<typename _Tp>
+    struct __is_nt_default_constructible_impl<_Tp, true>
+    : public __and_<__is_array_known_bounds<_Tp>,
+      __is_nt_default_constructible_atom<typename
+                      remove_all_extents<_Tp>::type>>
+    { };
+
+  template<typename _Tp>
+    struct __is_nt_default_constructible_impl<_Tp, false>
+    : public __is_nt_default_constructible_atom<_Tp>
+    { };
+
+
+  template<typename _Tp>
+    struct is_nothrow_default_constructible
+    : public __and_<is_default_constructible<_Tp>,
+                    __is_nt_default_constructible_impl<_Tp>>
+    { };
+
+  template<typename _Tp, typename... _Args>
+    struct __is_nt_constructible_impl
+    : public integral_constant<bool, noexcept(_Tp(declval<_Args>()...))>
+    { };
+
+  template<typename _Tp, typename _Arg>
+    struct __is_nt_constructible_impl<_Tp, _Arg>
+    : public integral_constant<bool,
+                               noexcept(static_cast<_Tp>(declval<_Arg>()))>
+    { };
+
+  template<typename _Tp>
+    struct __is_nt_constructible_impl<_Tp>
+    : public is_nothrow_default_constructible<_Tp>
+    { };
+
+
+  template<typename _Tp, typename... _Args>
+    struct is_nothrow_constructible
+    : public __and_<is_constructible<_Tp, _Args...>,
+      __is_nt_constructible_impl<_Tp, _Args...>>
+    { };
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __is_nothrow_copy_constructible_impl;
+
+  template<typename _Tp>
+    struct __is_nothrow_copy_constructible_impl<_Tp, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_nothrow_copy_constructible_impl<_Tp, true>
+    : public is_nothrow_constructible<_Tp, const _Tp&>
+    { };
+
+
+  template<typename _Tp>
+    struct is_nothrow_copy_constructible
+    : public __is_nothrow_copy_constructible_impl<_Tp>
+    { };
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __is_nothrow_move_constructible_impl;
+
+  template<typename _Tp>
+    struct __is_nothrow_move_constructible_impl<_Tp, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_nothrow_move_constructible_impl<_Tp, true>
+    : public is_nothrow_constructible<_Tp, _Tp&&>
+    { };
+
+
+  template<typename _Tp>
+    struct is_nothrow_move_constructible
+    : public __is_nothrow_move_constructible_impl<_Tp>
+    { };
+
+
+  template<typename _Tp, typename _Up>
+    struct is_assignable
+      : public __bool_constant<__is_assignable(_Tp, _Up)>
+    { };
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __is_copy_assignable_impl;
+
+  template<typename _Tp>
+    struct __is_copy_assignable_impl<_Tp, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_copy_assignable_impl<_Tp, true>
+    : public is_assignable<_Tp&, const _Tp&>
+    { };
+
+
+  template<typename _Tp>
+    struct is_copy_assignable
+    : public __is_copy_assignable_impl<_Tp>
+    { };
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __is_move_assignable_impl;
+
+  template<typename _Tp>
+    struct __is_move_assignable_impl<_Tp, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_move_assignable_impl<_Tp, true>
+    : public is_assignable<_Tp&, _Tp&&>
+    { };
+
+
+  template<typename _Tp>
+    struct is_move_assignable
+    : public __is_move_assignable_impl<_Tp>
+    { };
+
+  template<typename _Tp, typename _Up>
+    struct __is_nt_assignable_impl
+    : public integral_constant<bool, noexcept(declval<_Tp>() = declval<_Up>())>
+    { };
+
+
+  template<typename _Tp, typename _Up>
+    struct is_nothrow_assignable
+    : public __and_<is_assignable<_Tp, _Up>,
+      __is_nt_assignable_impl<_Tp, _Up>>
+    { };
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __is_nt_copy_assignable_impl;
+
+  template<typename _Tp>
+    struct __is_nt_copy_assignable_impl<_Tp, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_nt_copy_assignable_impl<_Tp, true>
+    : public is_nothrow_assignable<_Tp&, const _Tp&>
+    { };
+
+
+  template<typename _Tp>
+    struct is_nothrow_copy_assignable
+    : public __is_nt_copy_assignable_impl<_Tp>
+    { };
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __is_nt_move_assignable_impl;
+
+  template<typename _Tp>
+    struct __is_nt_move_assignable_impl<_Tp, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_nt_move_assignable_impl<_Tp, true>
+    : public is_nothrow_assignable<_Tp&, _Tp&&>
+    { };
+
+
+  template<typename _Tp>
+    struct is_nothrow_move_assignable
+    : public __is_nt_move_assignable_impl<_Tp>
+    { };
+
+
+  template<typename _Tp, typename... _Args>
+    struct is_trivially_constructible
+    : public __bool_constant<__is_trivially_constructible(_Tp, _Args...)>
+    { };
+
+
+  template<typename _Tp>
+    struct is_trivially_default_constructible
+    : public is_trivially_constructible<_Tp>::type
+    { };
+
+  struct __do_is_implicitly_default_constructible_impl
+  {
+    template <typename _Tp>
+    static void __helper(const _Tp&);
+
+    template <typename _Tp>
+    static true_type __test(const _Tp&,
+                            decltype(__helper<const _Tp&>({}))* = 0);
+
+    static false_type __test(...);
+  };
+
+  template<typename _Tp>
+    struct __is_implicitly_default_constructible_impl
+      : public __do_is_implicitly_default_constructible_impl
+  {
+    typedef decltype(__test(declval<_Tp>())) type;
+  };
+
+  template<typename _Tp>
+    struct __is_implicitly_default_constructible_safe
+      : public __is_implicitly_default_constructible_impl<_Tp>::type
+  { };
+
+  template <typename _Tp>
+    struct __is_implicitly_default_constructible
+      : public __and_<is_default_constructible<_Tp>,
+                      __is_implicitly_default_constructible_safe<_Tp>>
+  { };
+
+
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __is_trivially_copy_constructible_impl;
+
+  template<typename _Tp>
+    struct __is_trivially_copy_constructible_impl<_Tp, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_trivially_copy_constructible_impl<_Tp, true>
+    : public __and_<is_copy_constructible<_Tp>,
+      integral_constant<bool,
+   __is_trivially_constructible(_Tp, const _Tp&)>>
+    { };
+
+  template<typename _Tp>
+    struct is_trivially_copy_constructible
+    : public __is_trivially_copy_constructible_impl<_Tp>
+    { };
+
+
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __is_trivially_move_constructible_impl;
+
+  template<typename _Tp>
+    struct __is_trivially_move_constructible_impl<_Tp, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_trivially_move_constructible_impl<_Tp, true>
+    : public __and_<is_move_constructible<_Tp>,
+      integral_constant<bool,
+   __is_trivially_constructible(_Tp, _Tp&&)>>
+    { };
+
+  template<typename _Tp>
+    struct is_trivially_move_constructible
+    : public __is_trivially_move_constructible_impl<_Tp>
+    { };
+
+
+  template<typename _Tp, typename _Up>
+    struct is_trivially_assignable
+    : public __bool_constant<__is_trivially_assignable(_Tp, _Up)>
+    { };
+
+
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __is_trivially_copy_assignable_impl;
+
+  template<typename _Tp>
+    struct __is_trivially_copy_assignable_impl<_Tp, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_trivially_copy_assignable_impl<_Tp, true>
+    : public __and_<is_copy_assignable<_Tp>,
+      integral_constant<bool,
+   __is_trivially_assignable(_Tp&, const _Tp&)>>
+    { };
+
+  template<typename _Tp>
+    struct is_trivially_copy_assignable
+    : public __is_trivially_copy_assignable_impl<_Tp>
+    { };
+
+
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __is_trivially_move_assignable_impl;
+
+  template<typename _Tp>
+    struct __is_trivially_move_assignable_impl<_Tp, false>
+    : public false_type { };
+
+  template<typename _Tp>
+    struct __is_trivially_move_assignable_impl<_Tp, true>
+    : public __and_<is_move_assignable<_Tp>,
+      integral_constant<bool,
+   __is_trivially_assignable(_Tp&, _Tp&&)>>
+    { };
+
+  template<typename _Tp>
+    struct is_trivially_move_assignable
+    : public __is_trivially_move_assignable_impl<_Tp>
+    { };
+
+
+  template<typename _Tp>
+    struct is_trivially_destructible
+    : public __and_<is_destructible<_Tp>, integral_constant<bool,
+         __has_trivial_destructor(_Tp)>>
+    { };
+
+
+
+  template<typename _Tp>
+    struct has_virtual_destructor
+    : public integral_constant<bool, __has_virtual_destructor(_Tp)>
+    { };
+
+
+
+
+
+  template<typename _Tp>
+    struct alignment_of
+    : public integral_constant<std::size_t, __alignof__(_Tp)> { };
+
+
+  template<typename>
+    struct rank
+    : public integral_constant<std::size_t, 0> { };
+
+  template<typename _Tp, std::size_t _Size>
+    struct rank<_Tp[_Size]>
+    : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
+
+  template<typename _Tp>
+    struct rank<_Tp[]>
+    : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
+
+
+  template<typename, unsigned _Uint>
+    struct extent
+    : public integral_constant<std::size_t, 0> { };
+
+  template<typename _Tp, unsigned _Uint, std::size_t _Size>
+    struct extent<_Tp[_Size], _Uint>
+    : public integral_constant<std::size_t,
+          _Uint == 0 ? _Size : extent<_Tp,
+          _Uint - 1>::value>
+    { };
+
+  template<typename _Tp, unsigned _Uint>
+    struct extent<_Tp[], _Uint>
+    : public integral_constant<std::size_t,
+          _Uint == 0 ? 0 : extent<_Tp,
+             _Uint - 1>::value>
+    { };
+
+
+
+
+
+  template<typename, typename>
+    struct is_same
+    : public false_type { };
+
+  template<typename _Tp>
+    struct is_same<_Tp, _Tp>
+    : public true_type { };
+
+
+  template<typename _Base, typename _Derived>
+    struct is_base_of
+    : public integral_constant<bool, __is_base_of(_Base, _Derived)>
+    { };
+
+  template<typename _From, typename _To,
+           bool = __or_<is_void<_From>, is_function<_To>,
+                        is_array<_To>>::value>
+    struct __is_convertible_helper
+    { typedef typename is_void<_To>::type type; };
+
+  template<typename _From, typename _To>
+    class __is_convertible_helper<_From, _To, false>
+    {
+       template<typename _To1>
+ static void __test_aux(_To1);
+
+      template<typename _From1, typename _To1,
+        typename = decltype(__test_aux<_To1>(std::declval<_From1>()))>
+ static true_type
+ __test(int);
+
+      template<typename, typename>
+ static false_type
+ __test(...);
+
+    public:
+      typedef decltype(__test<_From, _To>(0)) type;
+    };
+
+
+
+  template<typename _From, typename _To>
+    struct is_convertible
+    : public __is_convertible_helper<_From, _To>::type
+    { };
+
+
+
+
+
+  template<typename _Tp>
+    struct remove_const
+    { typedef _Tp type; };
+
+  template<typename _Tp>
+    struct remove_const<_Tp const>
+    { typedef _Tp type; };
+
+
+  template<typename _Tp>
+    struct remove_volatile
+    { typedef _Tp type; };
+
+  template<typename _Tp>
+    struct remove_volatile<_Tp volatile>
+    { typedef _Tp type; };
+
+
+  template<typename _Tp>
+    struct remove_cv
+    {
+      typedef typename
+      remove_const<typename remove_volatile<_Tp>::type>::type type;
+    };
+
+
+  template<typename _Tp>
+    struct add_const
+    { typedef _Tp const type; };
+
+
+  template<typename _Tp>
+    struct add_volatile
+    { typedef _Tp volatile type; };
+
+
+  template<typename _Tp>
+    struct add_cv
+    {
+      typedef typename
+      add_const<typename add_volatile<_Tp>::type>::type type;
+    };
+
+
+
+
+
+
+  template<typename _Tp>
+    using remove_const_t = typename remove_const<_Tp>::type;
+
+
+  template<typename _Tp>
+    using remove_volatile_t = typename remove_volatile<_Tp>::type;
+
+
+  template<typename _Tp>
+    using remove_cv_t = typename remove_cv<_Tp>::type;
+
+
+  template<typename _Tp>
+    using add_const_t = typename add_const<_Tp>::type;
+
+
+  template<typename _Tp>
+    using add_volatile_t = typename add_volatile<_Tp>::type;
+
+
+  template<typename _Tp>
+    using add_cv_t = typename add_cv<_Tp>::type;
+
+
+
+
+
+  template<typename _Tp>
+    struct remove_reference
+    { typedef _Tp type; };
+
+  template<typename _Tp>
+    struct remove_reference<_Tp&>
+    { typedef _Tp type; };
+
+  template<typename _Tp>
+    struct remove_reference<_Tp&&>
+    { typedef _Tp type; };
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __add_lvalue_reference_helper
+    { typedef _Tp type; };
+
+  template<typename _Tp>
+    struct __add_lvalue_reference_helper<_Tp, true>
+    { typedef _Tp& type; };
+
+
+  template<typename _Tp>
+    struct add_lvalue_reference
+    : public __add_lvalue_reference_helper<_Tp>
+    { };
+
+  template<typename _Tp, bool = __is_referenceable<_Tp>::value>
+    struct __add_rvalue_reference_helper
+    { typedef _Tp type; };
+
+  template<typename _Tp>
+    struct __add_rvalue_reference_helper<_Tp, true>
+    { typedef _Tp&& type; };
+
+
+  template<typename _Tp>
+    struct add_rvalue_reference
+    : public __add_rvalue_reference_helper<_Tp>
+    { };
+
+
+
+  template<typename _Tp>
+    using remove_reference_t = typename remove_reference<_Tp>::type;
+
+
+  template<typename _Tp>
+    using add_lvalue_reference_t = typename add_lvalue_reference<_Tp>::type;
+
+
+  template<typename _Tp>
+    using add_rvalue_reference_t = typename add_rvalue_reference<_Tp>::type;
+
+
+
+
+
+  template<typename _Unqualified, bool _IsConst, bool _IsVol>
+    struct __cv_selector;
+
+  template<typename _Unqualified>
+    struct __cv_selector<_Unqualified, false, false>
+    { typedef _Unqualified __type; };
+
+  template<typename _Unqualified>
+    struct __cv_selector<_Unqualified, false, true>
+    { typedef volatile _Unqualified __type; };
+
+  template<typename _Unqualified>
+    struct __cv_selector<_Unqualified, true, false>
+    { typedef const _Unqualified __type; };
+
+  template<typename _Unqualified>
+    struct __cv_selector<_Unqualified, true, true>
+    { typedef const volatile _Unqualified __type; };
+
+  template<typename _Qualified, typename _Unqualified,
+    bool _IsConst = is_const<_Qualified>::value,
+    bool _IsVol = is_volatile<_Qualified>::value>
+    class __match_cv_qualifiers
+    {
+      typedef __cv_selector<_Unqualified, _IsConst, _IsVol> __match;
+
+    public:
+      typedef typename __match::__type __type;
+    };
+
+
+  template<typename _Tp>
+    struct __make_unsigned
+    { typedef _Tp __type; };
+
+  template<>
+    struct __make_unsigned<char>
+    { typedef unsigned char __type; };
+
+  template<>
+    struct __make_unsigned<signed char>
+    { typedef unsigned char __type; };
+
+  template<>
+    struct __make_unsigned<short>
+    { typedef unsigned short __type; };
+
+  template<>
+    struct __make_unsigned<int>
+    { typedef unsigned int __type; };
+
+  template<>
+    struct __make_unsigned<long>
+    { typedef unsigned long __type; };
+
+  template<>
+    struct __make_unsigned<long long>
+    { typedef unsigned long long __type; };
+
+
+  template<>
+    struct __make_unsigned<wchar_t> : __make_unsigned<int>
+    { };
+
+
+
+  template<>
+    struct __make_unsigned<__int128>
+    { typedef unsigned __int128 __type; };
+  template<typename _Tp,
+    bool _IsInt = is_integral<_Tp>::value,
+    bool _IsEnum = is_enum<_Tp>::value>
+    class __make_unsigned_selector;
+
+  template<typename _Tp>
+    class __make_unsigned_selector<_Tp, true, false>
+    {
+      typedef __make_unsigned<typename remove_cv<_Tp>::type> __unsignedt;
+      typedef typename __unsignedt::__type __unsigned_type;
+      typedef __match_cv_qualifiers<_Tp, __unsigned_type> __cv_unsigned;
+
+    public:
+      typedef typename __cv_unsigned::__type __type;
+    };
+
+  template<typename _Tp>
+    class __make_unsigned_selector<_Tp, false, true>
+    {
+
+      typedef unsigned char __smallest;
+      static const bool __b0 = sizeof(_Tp) <= sizeof(__smallest);
+      static const bool __b1 = sizeof(_Tp) <= sizeof(unsigned short);
+      static const bool __b2 = sizeof(_Tp) <= sizeof(unsigned int);
+      static const bool __b3 = sizeof(_Tp) <= sizeof(unsigned long);
+      typedef conditional<__b3, unsigned long, unsigned long long> __cond3;
+      typedef typename __cond3::type __cond3_type;
+      typedef conditional<__b2, unsigned int, __cond3_type> __cond2;
+      typedef typename __cond2::type __cond2_type;
+      typedef conditional<__b1, unsigned short, __cond2_type> __cond1;
+      typedef typename __cond1::type __cond1_type;
+
+      typedef typename conditional<__b0, __smallest, __cond1_type>::type
+ __unsigned_type;
+      typedef __match_cv_qualifiers<_Tp, __unsigned_type> __cv_unsigned;
+
+    public:
+      typedef typename __cv_unsigned::__type __type;
+    };
+
+
+
+
+
+  template<typename _Tp>
+    struct make_unsigned
+    { typedef typename __make_unsigned_selector<_Tp>::__type type; };
+
+
+  template<>
+    struct make_unsigned<bool>;
+
+
+
+  template<typename _Tp>
+    struct __make_signed
+    { typedef _Tp __type; };
+
+  template<>
+    struct __make_signed<char>
+    { typedef signed char __type; };
+
+  template<>
+    struct __make_signed<unsigned char>
+    { typedef signed char __type; };
+
+  template<>
+    struct __make_signed<unsigned short>
+    { typedef signed short __type; };
+
+  template<>
+    struct __make_signed<unsigned int>
+    { typedef signed int __type; };
+
+  template<>
+    struct __make_signed<unsigned long>
+    { typedef signed long __type; };
+
+  template<>
+    struct __make_signed<unsigned long long>
+    { typedef signed long long __type; };
+  template<>
+    struct __make_signed<char16_t> : __make_signed<uint_least16_t>
+    { };
+  template<>
+    struct __make_signed<char32_t> : __make_signed<uint_least32_t>
+    { };
+
+
+
+  template<>
+    struct __make_signed<unsigned __int128>
+    { typedef __int128 __type; };
+  template<typename _Tp,
+    bool _IsInt = is_integral<_Tp>::value,
+    bool _IsEnum = is_enum<_Tp>::value>
+    class __make_signed_selector;
+
+  template<typename _Tp>
+    class __make_signed_selector<_Tp, true, false>
+    {
+      typedef __make_signed<typename remove_cv<_Tp>::type> __signedt;
+      typedef typename __signedt::__type __signed_type;
+      typedef __match_cv_qualifiers<_Tp, __signed_type> __cv_signed;
+
+    public:
+      typedef typename __cv_signed::__type __type;
+    };
+
+  template<typename _Tp>
+    class __make_signed_selector<_Tp, false, true>
+    {
+      typedef typename __make_unsigned_selector<_Tp>::__type __unsigned_type;
+
+    public:
+      typedef typename __make_signed_selector<__unsigned_type>::__type __type;
+    };
+
+
+
+
+
+  template<typename _Tp>
+    struct make_signed
+    { typedef typename __make_signed_selector<_Tp>::__type type; };
+
+
+  template<>
+    struct make_signed<bool>;
+
+
+
+  template<typename _Tp>
+    using make_signed_t = typename make_signed<_Tp>::type;
+
+
+  template<typename _Tp>
+    using make_unsigned_t = typename make_unsigned<_Tp>::type;
+
+
+
+
+
+  template<typename _Tp>
+    struct remove_extent
+    { typedef _Tp type; };
+
+  template<typename _Tp, std::size_t _Size>
+    struct remove_extent<_Tp[_Size]>
+    { typedef _Tp type; };
+
+  template<typename _Tp>
+    struct remove_extent<_Tp[]>
+    { typedef _Tp type; };
+
+
+  template<typename _Tp>
+    struct remove_all_extents
+    { typedef _Tp type; };
+
+  template<typename _Tp, std::size_t _Size>
+    struct remove_all_extents<_Tp[_Size]>
+    { typedef typename remove_all_extents<_Tp>::type type; };
+
+  template<typename _Tp>
+    struct remove_all_extents<_Tp[]>
+    { typedef typename remove_all_extents<_Tp>::type type; };
+
+
+
+  template<typename _Tp>
+    using remove_extent_t = typename remove_extent<_Tp>::type;
+
+
+  template<typename _Tp>
+    using remove_all_extents_t = typename remove_all_extents<_Tp>::type;
+
+
+
+
+  template<typename _Tp, typename>
+    struct __remove_pointer_helper
+    { typedef _Tp type; };
+
+  template<typename _Tp, typename _Up>
+    struct __remove_pointer_helper<_Tp, _Up*>
+    { typedef _Up type; };
+
+
+  template<typename _Tp>
+    struct remove_pointer
+    : public __remove_pointer_helper<_Tp, typename remove_cv<_Tp>::type>
+    { };
+
+
+  template<typename _Tp, bool = __or_<__is_referenceable<_Tp>,
+          is_void<_Tp>>::value>
+    struct __add_pointer_helper
+    { typedef _Tp type; };
+
+  template<typename _Tp>
+    struct __add_pointer_helper<_Tp, true>
+    { typedef typename remove_reference<_Tp>::type* type; };
+
+  template<typename _Tp>
+    struct add_pointer
+    : public __add_pointer_helper<_Tp>
+    { };
+
+
+
+  template<typename _Tp>
+    using remove_pointer_t = typename remove_pointer<_Tp>::type;
+
+
+  template<typename _Tp>
+    using add_pointer_t = typename add_pointer<_Tp>::type;
+
+
+  template<std::size_t _Len>
+    struct __aligned_storage_msa
+    {
+      union __type
+      {
+ unsigned char __data[_Len];
+ struct __attribute__((__aligned__)) { } __align;
+      };
+    };
+  template<std::size_t _Len, std::size_t _Align =
+    __alignof__(typename __aligned_storage_msa<_Len>::__type)>
+    struct aligned_storage
+    {
+      union type
+      {
+ unsigned char __data[_Len];
+ struct __attribute__((__aligned__((_Align)))) { } __align;
+      };
+    };
+
+  template <typename... _Types>
+    struct __strictest_alignment
+    {
+      static const size_t _S_alignment = 0;
+      static const size_t _S_size = 0;
+    };
+
+  template <typename _Tp, typename... _Types>
+    struct __strictest_alignment<_Tp, _Types...>
+    {
+      static const size_t _S_alignment =
+        alignof(_Tp) > __strictest_alignment<_Types...>::_S_alignment
+ ? alignof(_Tp) : __strictest_alignment<_Types...>::_S_alignment;
+      static const size_t _S_size =
+        sizeof(_Tp) > __strictest_alignment<_Types...>::_S_size
+ ? sizeof(_Tp) : __strictest_alignment<_Types...>::_S_size;
+    };
+  template <size_t _Len, typename... _Types>
+    struct aligned_union
+    {
+    private:
+      static_assert(sizeof...(_Types) != 0, "At least one type is required");
+
+      using __strictest = __strictest_alignment<_Types...>;
+      static const size_t _S_len = _Len > __strictest::_S_size
+ ? _Len : __strictest::_S_size;
+    public:
+
+      static const size_t alignment_value = __strictest::_S_alignment;
+
+      typedef typename aligned_storage<_S_len, alignment_value>::type type;
+    };
+
+  template <size_t _Len, typename... _Types>
+    const size_t aligned_union<_Len, _Types...>::alignment_value;
+
+
+
+  template<typename _Up,
+    bool _IsArray = is_array<_Up>::value,
+    bool _IsFunction = is_function<_Up>::value>
+    struct __decay_selector;
+
+
+  template<typename _Up>
+    struct __decay_selector<_Up, false, false>
+    { typedef typename remove_cv<_Up>::type __type; };
+
+  template<typename _Up>
+    struct __decay_selector<_Up, true, false>
+    { typedef typename remove_extent<_Up>::type* __type; };
+
+  template<typename _Up>
+    struct __decay_selector<_Up, false, true>
+    { typedef typename add_pointer<_Up>::type __type; };
+
+
+  template<typename _Tp>
+    class decay
+    {
+      typedef typename remove_reference<_Tp>::type __remove_type;
+
+    public:
+      typedef typename __decay_selector<__remove_type>::__type type;
+    };
+
+  template<typename _Tp>
+    class reference_wrapper;
+
+
+  template<typename _Tp>
+    struct __strip_reference_wrapper
+    {
+      typedef _Tp __type;
+    };
+
+  template<typename _Tp>
+    struct __strip_reference_wrapper<reference_wrapper<_Tp> >
+    {
+      typedef _Tp& __type;
+    };
+
+  template<typename _Tp>
+    struct __decay_and_strip
+    {
+      typedef typename __strip_reference_wrapper<
+ typename decay<_Tp>::type>::__type __type;
+    };
+
+
+
+
+  template<bool, typename _Tp = void>
+    struct enable_if
+    { };
+
+
+  template<typename _Tp>
+    struct enable_if<true, _Tp>
+    { typedef _Tp type; };
+
+  template<typename... _Cond>
+    using _Require = typename enable_if<__and_<_Cond...>::value>::type;
+
+
+
+  template<bool _Cond, typename _Iftrue, typename _Iffalse>
+    struct conditional
+    { typedef _Iftrue type; };
+
+
+  template<typename _Iftrue, typename _Iffalse>
+    struct conditional<false, _Iftrue, _Iffalse>
+    { typedef _Iffalse type; };
+
+
+  template<typename... _Tp>
+    struct common_type;
+
+
+
+  struct __do_common_type_impl
+  {
+    template<typename _Tp, typename _Up>
+      static __success_type<typename decay<decltype
+       (true ? std::declval<_Tp>()
+        : std::declval<_Up>())>::type> _S_test(int);
+
+    template<typename, typename>
+      static __failure_type _S_test(...);
+  };
+
+  template<typename _Tp, typename _Up>
+    struct __common_type_impl
+    : private __do_common_type_impl
+    {
+      typedef decltype(_S_test<_Tp, _Up>(0)) type;
+    };
+
+  struct __do_member_type_wrapper
+  {
+    template<typename _Tp>
+      static __success_type<typename _Tp::type> _S_test(int);
+
+    template<typename>
+      static __failure_type _S_test(...);
+  };
+
+  template<typename _Tp>
+    struct __member_type_wrapper
+    : private __do_member_type_wrapper
+    {
+      typedef decltype(_S_test<_Tp>(0)) type;
+    };
+
+  template<typename _CTp, typename... _Args>
+    struct __expanded_common_type_wrapper
+    {
+      typedef common_type<typename _CTp::type, _Args...> type;
+    };
+
+  template<typename... _Args>
+    struct __expanded_common_type_wrapper<__failure_type, _Args...>
+    { typedef __failure_type type; };
+
+  template<typename _Tp>
+    struct common_type<_Tp>
+    { typedef typename decay<_Tp>::type type; };
+
+  template<typename _Tp, typename _Up>
+    struct common_type<_Tp, _Up>
+    : public __common_type_impl<_Tp, _Up>::type
+    { };
+
+  template<typename _Tp, typename _Up, typename... _Vp>
+    struct common_type<_Tp, _Up, _Vp...>
+    : public __expanded_common_type_wrapper<typename __member_type_wrapper<
+               common_type<_Tp, _Up>>::type, _Vp...>::type
+    { };
+
+
+  template<typename _Tp>
+    struct underlying_type
+    {
+      typedef __underlying_type(_Tp) type;
+    };
+
+  template<typename _Tp>
+    struct __declval_protector
+    {
+      static const bool __stop = false;
+    };
+
+  template<typename _Tp>
+    auto declval() noexcept -> decltype(__declval<_Tp>(0))
+    {
+      static_assert(__declval_protector<_Tp>::__stop,
+      "declval() must not be used!");
+      return __declval<_Tp>(0);
+    }
+
+
+  template<typename _Signature>
+    class result_of;
+
+
+
+
+
+  struct __invoke_memfun_ref { };
+  struct __invoke_memfun_deref { };
+  struct __invoke_memobj_ref { };
+  struct __invoke_memobj_deref { };
+  struct __invoke_other { };
+
+
+  template<typename _Tp, typename _Tag>
+    struct __result_of_success : __success_type<_Tp>
+    { using __invoke_type = _Tag; };
+
+
+  struct __result_of_memfun_ref_impl
+  {
+    template<typename _Fp, typename _Tp1, typename... _Args>
+      static __result_of_success<decltype(
+      (std::declval<_Tp1>().*std::declval<_Fp>())(std::declval<_Args>()...)
+      ), __invoke_memfun_ref> _S_test(int);
+
+    template<typename...>
+      static __failure_type _S_test(...);
+  };
+
+  template<typename _MemPtr, typename _Arg, typename... _Args>
+    struct __result_of_memfun_ref
+    : private __result_of_memfun_ref_impl
+    {
+      typedef decltype(_S_test<_MemPtr, _Arg, _Args...>(0)) type;
+    };
+
+
+  struct __result_of_memfun_deref_impl
+  {
+    template<typename _Fp, typename _Tp1, typename... _Args>
+      static __result_of_success<decltype(
+      ((*std::declval<_Tp1>()).*std::declval<_Fp>())(std::declval<_Args>()...)
+      ), __invoke_memfun_deref> _S_test(int);
+
+    template<typename...>
+      static __failure_type _S_test(...);
+  };
+
+  template<typename _MemPtr, typename _Arg, typename... _Args>
+    struct __result_of_memfun_deref
+    : private __result_of_memfun_deref_impl
+    {
+      typedef decltype(_S_test<_MemPtr, _Arg, _Args...>(0)) type;
+    };
+
+
+  struct __result_of_memobj_ref_impl
+  {
+    template<typename _Fp, typename _Tp1>
+      static __result_of_success<decltype(
+      std::declval<_Tp1>().*std::declval<_Fp>()
+      ), __invoke_memobj_ref> _S_test(int);
+
+    template<typename, typename>
+      static __failure_type _S_test(...);
+  };
+
+  template<typename _MemPtr, typename _Arg>
+    struct __result_of_memobj_ref
+    : private __result_of_memobj_ref_impl
+    {
+      typedef decltype(_S_test<_MemPtr, _Arg>(0)) type;
+    };
+
+
+  struct __result_of_memobj_deref_impl
+  {
+    template<typename _Fp, typename _Tp1>
+      static __result_of_success<decltype(
+      (*std::declval<_Tp1>()).*std::declval<_Fp>()
+      ), __invoke_memobj_deref> _S_test(int);
+
+    template<typename, typename>
+      static __failure_type _S_test(...);
+  };
+
+  template<typename _MemPtr, typename _Arg>
+    struct __result_of_memobj_deref
+    : private __result_of_memobj_deref_impl
+    {
+      typedef decltype(_S_test<_MemPtr, _Arg>(0)) type;
+    };
+
+  template<typename _MemPtr, typename _Arg>
+    struct __result_of_memobj;
+
+  template<typename _Res, typename _Class, typename _Arg>
+    struct __result_of_memobj<_Res _Class::*, _Arg>
+    {
+      typedef typename remove_cv<typename remove_reference<
+        _Arg>::type>::type _Argval;
+      typedef _Res _Class::* _MemPtr;
+      typedef typename conditional<__or_<is_same<_Argval, _Class>,
+        is_base_of<_Class, _Argval>>::value,
+        __result_of_memobj_ref<_MemPtr, _Arg>,
+        __result_of_memobj_deref<_MemPtr, _Arg>
+      >::type::type type;
+    };
+
+  template<typename _MemPtr, typename _Arg, typename... _Args>
+    struct __result_of_memfun;
+
+  template<typename _Res, typename _Class, typename _Arg, typename... _Args>
+    struct __result_of_memfun<_Res _Class::*, _Arg, _Args...>
+    {
+      typedef typename remove_cv<typename remove_reference<
+        _Arg>::type>::type _Argval;
+      typedef _Res _Class::* _MemPtr;
+      typedef typename conditional<__or_<is_same<_Argval, _Class>,
+        is_base_of<_Class, _Argval>>::value,
+        __result_of_memfun_ref<_MemPtr, _Arg, _Args...>,
+        __result_of_memfun_deref<_MemPtr, _Arg, _Args...>
+      >::type::type type;
+    };
+
+
+
+
+
+
+  template<typename _Tp, typename _Up = typename decay<_Tp>::type>
+    struct __inv_unwrap
+    {
+      using type = _Tp;
+    };
+
+  template<typename _Tp, typename _Up>
+    struct __inv_unwrap<_Tp, reference_wrapper<_Up>>
+    {
+      using type = _Up&;
+    };
+
+  template<bool, bool, typename _Functor, typename... _ArgTypes>
+    struct __result_of_impl
+    {
+      typedef __failure_type type;
+    };
+
+  template<typename _MemPtr, typename _Arg>
+    struct __result_of_impl<true, false, _MemPtr, _Arg>
+    : public __result_of_memobj<typename decay<_MemPtr>::type,
+    typename __inv_unwrap<_Arg>::type>
+    { };
+
+  template<typename _MemPtr, typename _Arg, typename... _Args>
+    struct __result_of_impl<false, true, _MemPtr, _Arg, _Args...>
+    : public __result_of_memfun<typename decay<_MemPtr>::type,
+    typename __inv_unwrap<_Arg>::type, _Args...>
+    { };
+
+
+  struct __result_of_other_impl
+  {
+    template<typename _Fn, typename... _Args>
+      static __result_of_success<decltype(
+      std::declval<_Fn>()(std::declval<_Args>()...)
+      ), __invoke_other> _S_test(int);
+
+    template<typename...>
+      static __failure_type _S_test(...);
+  };
+
+  template<typename _Functor, typename... _ArgTypes>
+    struct __result_of_impl<false, false, _Functor, _ArgTypes...>
+    : private __result_of_other_impl
+    {
+      typedef decltype(_S_test<_Functor, _ArgTypes...>(0)) type;
+    };
+
+
+  template<typename _Functor, typename... _ArgTypes>
+    struct __invoke_result
+    : public __result_of_impl<
+        is_member_object_pointer<
+          typename remove_reference<_Functor>::type
+        >::value,
+        is_member_function_pointer<
+          typename remove_reference<_Functor>::type
+        >::value,
+ _Functor, _ArgTypes...
+      >::type
+    { };
+
+  template<typename _Functor, typename... _ArgTypes>
+    struct result_of<_Functor(_ArgTypes...)>
+    : public __invoke_result<_Functor, _ArgTypes...>
+    { };
+
+
+
+  template<size_t _Len, size_t _Align =
+     __alignof__(typename __aligned_storage_msa<_Len>::__type)>
+    using aligned_storage_t = typename aligned_storage<_Len, _Align>::type;
+
+  template <size_t _Len, typename... _Types>
+    using aligned_union_t = typename aligned_union<_Len, _Types...>::type;
+
+
+  template<typename _Tp>
+    using decay_t = typename decay<_Tp>::type;
+
+
+  template<bool _Cond, typename _Tp = void>
+    using enable_if_t = typename enable_if<_Cond, _Tp>::type;
+
+
+  template<bool _Cond, typename _Iftrue, typename _Iffalse>
+    using conditional_t = typename conditional<_Cond, _Iftrue, _Iffalse>::type;
+
+
+  template<typename... _Tp>
+    using common_type_t = typename common_type<_Tp...>::type;
+
+
+  template<typename _Tp>
+    using underlying_type_t = typename underlying_type<_Tp>::type;
+
+
+  template<typename _Tp>
+    using result_of_t = typename result_of<_Tp>::type;
+
+
+  template<typename...> using __void_t = void;
+
+
+
+
+  template<typename...> using void_t = void;
+
+
+
+  template<typename _Default, typename _AlwaysVoid,
+    template<typename...> class _Op, typename... _Args>
+    struct __detector
+    {
+      using value_t = false_type;
+      using type = _Default;
+    };
+
+
+  template<typename _Default, template<typename...> class _Op,
+     typename... _Args>
+    struct __detector<_Default, __void_t<_Op<_Args...>>, _Op, _Args...>
+    {
+      using value_t = true_type;
+      using type = _Op<_Args...>;
+    };
+
+
+  template<typename _Default, template<typename...> class _Op,
+    typename... _Args>
+    using __detected_or = __detector<_Default, void, _Op, _Args...>;
+
+
+  template<typename _Default, template<typename...> class _Op,
+    typename... _Args>
+    using __detected_or_t
+      = typename __detected_or<_Default, _Op, _Args...>::type;
+  template <typename _Tp>
+    struct __is_swappable;
+
+  template <typename _Tp>
+    struct __is_nothrow_swappable;
+
+  template<typename... _Elements>
+    class tuple;
+
+  template<typename>
+    struct __is_tuple_like_impl : false_type
+    { };
+
+  template<typename... _Tps>
+    struct __is_tuple_like_impl<tuple<_Tps...>> : true_type
+    { };
+
+
+  template<typename _Tp>
+    struct __is_tuple_like
+    : public __is_tuple_like_impl<typename remove_cv<
+      typename remove_reference<_Tp>::type>::type>::type
+    { };
+
+  template<typename _Tp>
+    inline
+    typename enable_if<__and_<__not_<__is_tuple_like<_Tp>>,
+         is_move_constructible<_Tp>,
+         is_move_assignable<_Tp>>::value>::type
+    swap(_Tp&, _Tp&)
+    noexcept(__and_<is_nothrow_move_constructible<_Tp>,
+             is_nothrow_move_assignable<_Tp>>::value);
+
+  template<typename _Tp, size_t _Nm>
+    inline
+    typename enable_if<__is_swappable<_Tp>::value>::type
+    swap(_Tp (&__a)[_Nm], _Tp (&__b)[_Nm])
+    noexcept(__is_nothrow_swappable<_Tp>::value);
+
+  namespace __swappable_details {
+    using std::swap;
+
+    struct __do_is_swappable_impl
+    {
+      template<typename _Tp, typename
+               = decltype(swap(std::declval<_Tp&>(), std::declval<_Tp&>()))>
+        static true_type __test(int);
+
+      template<typename>
+        static false_type __test(...);
+    };
+
+    struct __do_is_nothrow_swappable_impl
+    {
+      template<typename _Tp>
+        static __bool_constant<
+          noexcept(swap(std::declval<_Tp&>(), std::declval<_Tp&>()))
+        > __test(int);
+
+      template<typename>
+        static false_type __test(...);
+    };
+
+  }
+
+  template<typename _Tp>
+    struct __is_swappable_impl
+    : public __swappable_details::__do_is_swappable_impl
+    {
+      typedef decltype(__test<_Tp>(0)) type;
+    };
+
+  template<typename _Tp>
+    struct __is_nothrow_swappable_impl
+    : public __swappable_details::__do_is_nothrow_swappable_impl
+    {
+      typedef decltype(__test<_Tp>(0)) type;
+    };
+
+  template<typename _Tp>
+    struct __is_swappable
+    : public __is_swappable_impl<_Tp>::type
+    { };
+
+  template<typename _Tp>
+    struct __is_nothrow_swappable
+    : public __is_nothrow_swappable_impl<_Tp>::type
+    { };
+
+
+
+
+
+
+  template<typename _Tp>
+    struct is_swappable
+    : public __is_swappable_impl<_Tp>::type
+    { };
+
+
+  template<typename _Tp>
+    struct is_nothrow_swappable
+    : public __is_nothrow_swappable_impl<_Tp>::type
+    { };
+
+
+
+  template<typename _Tp>
+    constexpr bool is_swappable_v =
+      is_swappable<_Tp>::value;
+
+
+  template<typename _Tp>
+    constexpr bool is_nothrow_swappable_v =
+      is_nothrow_swappable<_Tp>::value;
+
+
+  namespace __swappable_with_details {
+    using std::swap;
+
+    struct __do_is_swappable_with_impl
+    {
+      template<typename _Tp, typename _Up, typename
+               = decltype(swap(std::declval<_Tp>(), std::declval<_Up>())),
+               typename
+               = decltype(swap(std::declval<_Up>(), std::declval<_Tp>()))>
+        static true_type __test(int);
+
+      template<typename, typename>
+        static false_type __test(...);
+    };
+
+    struct __do_is_nothrow_swappable_with_impl
+    {
+      template<typename _Tp, typename _Up>
+        static __bool_constant<
+          noexcept(swap(std::declval<_Tp>(), std::declval<_Up>()))
+          &&
+          noexcept(swap(std::declval<_Up>(), std::declval<_Tp>()))
+        > __test(int);
+
+      template<typename, typename>
+        static false_type __test(...);
+    };
+
+  }
+
+  template<typename _Tp, typename _Up>
+    struct __is_swappable_with_impl
+    : public __swappable_with_details::__do_is_swappable_with_impl
+    {
+      typedef decltype(__test<_Tp, _Up>(0)) type;
+    };
+
+
+  template<typename _Tp>
+    struct __is_swappable_with_impl<_Tp&, _Tp&>
+    : public __swappable_details::__do_is_swappable_impl
+    {
+      typedef decltype(__test<_Tp&>(0)) type;
+    };
+
+  template<typename _Tp, typename _Up>
+    struct __is_nothrow_swappable_with_impl
+    : public __swappable_with_details::__do_is_nothrow_swappable_with_impl
+    {
+      typedef decltype(__test<_Tp, _Up>(0)) type;
+    };
+
+
+  template<typename _Tp>
+    struct __is_nothrow_swappable_with_impl<_Tp&, _Tp&>
+    : public __swappable_details::__do_is_nothrow_swappable_impl
+    {
+      typedef decltype(__test<_Tp&>(0)) type;
+    };
+
+
+  template<typename _Tp, typename _Up>
+    struct is_swappable_with
+    : public __is_swappable_with_impl<_Tp, _Up>::type
+    { };
+
+
+  template<typename _Tp, typename _Up>
+    struct is_nothrow_swappable_with
+    : public __is_nothrow_swappable_with_impl<_Tp, _Up>::type
+    { };
+
+
+
+  template<typename _Tp, typename _Up>
+    constexpr bool is_swappable_with_v =
+      is_swappable_with<_Tp, _Up>::value;
+
+
+  template<typename _Tp, typename _Up>
+    constexpr bool is_nothrow_swappable_with_v =
+      is_nothrow_swappable_with<_Tp, _Up>::value;
+
+
+
+
+
+
+  template<typename _Result, typename _Ret, typename = void>
+    struct __is_invocable_impl : false_type { };
+
+  template<typename _Result, typename _Ret>
+    struct __is_invocable_impl<_Result, _Ret, __void_t<typename _Result::type>>
+    : __or_<is_void<_Ret>, is_convertible<typename _Result::type, _Ret>>::type
+    { };
+
+  template<typename _Fn, typename... _ArgTypes>
+    struct __is_invocable
+    : __is_invocable_impl<__invoke_result<_Fn, _ArgTypes...>, void>::type
+    { };
+
+  template<typename _Fn, typename _Tp, typename... _Args>
+    constexpr bool __call_is_nt(__invoke_memfun_ref)
+    {
+      using _Up = typename __inv_unwrap<_Tp>::type;
+      return noexcept((std::declval<_Up>().*std::declval<_Fn>())(
+     std::declval<_Args>()...));
+    }
+
+  template<typename _Fn, typename _Tp, typename... _Args>
+    constexpr bool __call_is_nt(__invoke_memfun_deref)
+    {
+      return noexcept(((*std::declval<_Tp>()).*std::declval<_Fn>())(
+     std::declval<_Args>()...));
+    }
+
+  template<typename _Fn, typename _Tp>
+    constexpr bool __call_is_nt(__invoke_memobj_ref)
+    {
+      using _Up = typename __inv_unwrap<_Tp>::type;
+      return noexcept(std::declval<_Up>().*std::declval<_Fn>());
+    }
+
+  template<typename _Fn, typename _Tp>
+    constexpr bool __call_is_nt(__invoke_memobj_deref)
+    {
+      return noexcept((*std::declval<_Tp>()).*std::declval<_Fn>());
+    }
+
+  template<typename _Fn, typename... _Args>
+    constexpr bool __call_is_nt(__invoke_other)
+    {
+      return noexcept(std::declval<_Fn>()(std::declval<_Args>()...));
+    }
+
+  template<typename _Result, typename _Fn, typename... _Args>
+    struct __call_is_nothrow
+    : __bool_constant<
+ std::__call_is_nt<_Fn, _Args...>(typename _Result::__invoke_type{})
+      >
+    { };
+
+  template<typename _Fn, typename... _Args>
+    using __call_is_nothrow_
+      = __call_is_nothrow<__invoke_result<_Fn, _Args...>, _Fn, _Args...>;
+
+
+  template<typename _Fn, typename... _Args>
+    struct __is_nothrow_invocable
+    : __and_<__is_invocable<_Fn, _Args...>,
+             __call_is_nothrow_<_Fn, _Args...>>::type
+    { };
+
+  struct __nonesuch {
+    __nonesuch() = delete;
+    ~__nonesuch() = delete;
+    __nonesuch(__nonesuch const&) = delete;
+    void operator=(__nonesuch const&) = delete;
+  };
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _Tp>
+    constexpr _Tp&&
+    forward(typename std::remove_reference<_Tp>::type& __t) noexcept
+    { return static_cast<_Tp&&>(__t); }
+
+
+
+
+
+
+
+  template<typename _Tp>
+    constexpr _Tp&&
+    forward(typename std::remove_reference<_Tp>::type&& __t) noexcept
+    {
+      static_assert(!std::is_lvalue_reference<_Tp>::value, "template argument"
+      " substituting _Tp is an lvalue reference type");
+      return static_cast<_Tp&&>(__t);
+    }
+
+
+
+
+
+
+  template<typename _Tp>
+    constexpr typename std::remove_reference<_Tp>::type&&
+    move(_Tp&& __t) noexcept
+    { return static_cast<typename std::remove_reference<_Tp>::type&&>(__t); }
+
+
+  template<typename _Tp>
+    struct __move_if_noexcept_cond
+    : public __and_<__not_<is_nothrow_move_constructible<_Tp>>,
+                    is_copy_constructible<_Tp>>::type { };
+  template<typename _Tp>
+    constexpr typename
+    conditional<__move_if_noexcept_cond<_Tp>::value, const _Tp&, _Tp&&>::type
+    move_if_noexcept(_Tp& __x) noexcept
+    { return std::move(__x); }
+  template<typename _Tp>
+    inline _Tp*
+    addressof(_Tp& __r) noexcept
+    { return std::__addressof(__r); }
+
+
+
+  template<typename _Tp>
+    const _Tp* addressof(const _Tp&&) = delete;
+
+
+  template <typename _Tp, typename _Up = _Tp>
+    inline _Tp
+    __exchange(_Tp& __obj, _Up&& __new_val)
+    {
+      _Tp __old_val = std::move(__obj);
+      __obj = std::forward<_Up>(__new_val);
+      return __old_val;
+    }
+  template<typename _Tp>
+    inline
+
+    typename enable_if<__and_<__not_<__is_tuple_like<_Tp>>,
+         is_move_constructible<_Tp>,
+         is_move_assignable<_Tp>>::value>::type
+    swap(_Tp& __a, _Tp& __b)
+    noexcept(__and_<is_nothrow_move_constructible<_Tp>,
+             is_nothrow_move_assignable<_Tp>>::value)
+
+
+
+
+    {
+
+     
+
+      _Tp __tmp = std::move(__a);
+      __a = std::move(__b);
+      __b = std::move(__tmp);
+    }
+
+
+
+
+  template<typename _Tp, size_t _Nm>
+    inline
+
+    typename enable_if<__is_swappable<_Tp>::value>::type
+    swap(_Tp (&__a)[_Nm], _Tp (&__b)[_Nm])
+    noexcept(__is_nothrow_swappable<_Tp>::value)
+
+
+
+
+    {
+      for (size_t __n = 0; __n < _Nm; ++__n)
+ swap(__a[__n], __b[__n]);
+    }
+
+
+
+}
+
+extern "C++" {
+
+namespace std
+{
+
+
+
+
+
+
+  class nested_exception
+  {
+    exception_ptr _M_ptr;
+
+  public:
+    nested_exception() noexcept : _M_ptr(current_exception()) { }
+
+    nested_exception(const nested_exception&) noexcept = default;
+
+    nested_exception& operator=(const nested_exception&) noexcept = default;
+
+    virtual ~nested_exception() noexcept;
+
+    [[noreturn]]
+    void
+    rethrow_nested() const
+    {
+      if (_M_ptr)
+ rethrow_exception(_M_ptr);
+      std::terminate();
+    }
+
+    exception_ptr
+    nested_ptr() const noexcept
+    { return _M_ptr; }
+  };
+
+  template<typename _Except>
+    struct _Nested_exception : public _Except, public nested_exception
+    {
+      explicit _Nested_exception(const _Except& __ex)
+      : _Except(__ex)
+      { }
+
+      explicit _Nested_exception(_Except&& __ex)
+      : _Except(static_cast<_Except&&>(__ex))
+      { }
+    };
+
+
+
+
+  template<typename _Tp>
+    [[noreturn]]
+    inline void
+    __throw_with_nested_impl(_Tp&& __t, true_type)
+    {
+      using _Up = typename remove_reference<_Tp>::type;
+      throw _Nested_exception<_Up>{std::forward<_Tp>(__t)};
+    }
+
+  template<typename _Tp>
+    [[noreturn]]
+    inline void
+    __throw_with_nested_impl(_Tp&& __t, false_type)
+    { throw std::forward<_Tp>(__t); }
+
+
+
+  template<typename _Tp>
+    [[noreturn]]
+    inline void
+    throw_with_nested(_Tp&& __t)
+    {
+      using _Up = typename decay<_Tp>::type;
+      using _CopyConstructible
+ = __and_<is_copy_constructible<_Up>, is_move_constructible<_Up>>;
+      static_assert(_CopyConstructible::value,
+   "throw_with_nested argument must be CopyConstructible");
+      using __nest = __and_<is_class<_Up>, __bool_constant<!__is_final(_Up)>,
+       __not_<is_base_of<nested_exception, _Up>>>;
+      std::__throw_with_nested_impl(std::forward<_Tp>(__t), __nest{});
+    }
+
+
+  template<typename _Tp>
+    using __rethrow_if_nested_cond = typename enable_if<
+      __and_<is_polymorphic<_Tp>,
+      __or_<__not_<is_base_of<nested_exception, _Tp>>,
+     is_convertible<_Tp*, nested_exception*>>>::value
+    >::type;
+
+
+  template<typename _Ex>
+    inline __rethrow_if_nested_cond<_Ex>
+    __rethrow_if_nested_impl(const _Ex* __ptr)
+    {
+      if (auto __ne_ptr = dynamic_cast<const nested_exception*>(__ptr))
+ __ne_ptr->rethrow_nested();
+    }
+
+
+  inline void
+  __rethrow_if_nested_impl(const void*)
+  { }
+
+
+  template<typename _Ex>
+    inline void
+    rethrow_if_nested(const _Ex& __ex)
+    { std::__rethrow_if_nested_impl(std::__addressof(__ex)); }
+
+
+}
+
+}
+
+
+
+
+
+extern "C++" {
+
+namespace std
+{
+
+
+
+
+
+
+  class bad_alloc : public exception
+  {
+  public:
+    bad_alloc() throw() { }
+
+
+
+    virtual ~bad_alloc() throw();
+
+
+    virtual const char* what() const throw();
+  };
+
+
+  class bad_array_new_length : public bad_alloc
+  {
+  public:
+    bad_array_new_length() throw() { }
+
+
+
+    virtual ~bad_array_new_length() throw();
+
+
+    virtual const char* what() const throw();
+  };
+
+
+
+
+
+
+  struct nothrow_t
+  {
+
+    explicit nothrow_t() = default;
+
+  };
+
+  extern const nothrow_t nothrow;
+
+
+
+  typedef void (*new_handler)();
+
+
+
+  new_handler set_new_handler(new_handler) throw();
+
+
+
+  new_handler get_new_handler() noexcept;
+
+}
+void* operator new(std::size_t)
+  __attribute__((__externally_visible__));
+void* operator new[](std::size_t)
+  __attribute__((__externally_visible__));
+void operator delete(void*) noexcept
+  __attribute__((__externally_visible__));
+void operator delete[](void*) noexcept
+  __attribute__((__externally_visible__));
+
+void operator delete(void*, std::size_t) noexcept
+  __attribute__((__externally_visible__));
+void operator delete[](void*, std::size_t) noexcept
+  __attribute__((__externally_visible__));
+
+void* operator new(std::size_t, const std::nothrow_t&) noexcept
+  __attribute__((__externally_visible__));
+void* operator new[](std::size_t, const std::nothrow_t&) noexcept
+  __attribute__((__externally_visible__));
+void operator delete(void*, const std::nothrow_t&) noexcept
+  __attribute__((__externally_visible__));
+void operator delete[](void*, const std::nothrow_t&) noexcept
+  __attribute__((__externally_visible__));
+inline void* operator new(std::size_t, void* __p) noexcept
+{ return __p; }
+inline void* operator new[](std::size_t, void* __p) noexcept
+{ return __p; }
+
+
+inline void operator delete (void*, void*) noexcept { }
+inline void operator delete[](void*, void*) noexcept { }
+
+}
+
+
+
+
+
+
+
+
+
+       
+
+
+       
+
+
+
+
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  struct input_iterator_tag { };
+
+
+  struct output_iterator_tag { };
+
+
+  struct forward_iterator_tag : public input_iterator_tag { };
+
+
+
+  struct bidirectional_iterator_tag : public forward_iterator_tag { };
+
+
+
+  struct random_access_iterator_tag : public bidirectional_iterator_tag { };
+  template<typename _Category, typename _Tp, typename _Distance = ptrdiff_t,
+           typename _Pointer = _Tp*, typename _Reference = _Tp&>
+    struct iterator
+    {
+
+      typedef _Category iterator_category;
+
+      typedef _Tp value_type;
+
+      typedef _Distance difference_type;
+
+      typedef _Pointer pointer;
+
+      typedef _Reference reference;
+    };
+  template<typename _Iterator, typename = __void_t<>>
+    struct __iterator_traits { };
+
+  template<typename _Iterator>
+    struct __iterator_traits<_Iterator,
+        __void_t<typename _Iterator::iterator_category,
+          typename _Iterator::value_type,
+          typename _Iterator::difference_type,
+          typename _Iterator::pointer,
+          typename _Iterator::reference>>
+    {
+      typedef typename _Iterator::iterator_category iterator_category;
+      typedef typename _Iterator::value_type value_type;
+      typedef typename _Iterator::difference_type difference_type;
+      typedef typename _Iterator::pointer pointer;
+      typedef typename _Iterator::reference reference;
+    };
+
+  template<typename _Iterator>
+    struct iterator_traits
+    : public __iterator_traits<_Iterator> { };
+  template<typename _Tp>
+    struct iterator_traits<_Tp*>
+    {
+      typedef random_access_iterator_tag iterator_category;
+      typedef _Tp value_type;
+      typedef ptrdiff_t difference_type;
+      typedef _Tp* pointer;
+      typedef _Tp& reference;
+    };
+
+
+  template<typename _Tp>
+    struct iterator_traits<const _Tp*>
+    {
+      typedef random_access_iterator_tag iterator_category;
+      typedef _Tp value_type;
+      typedef ptrdiff_t difference_type;
+      typedef const _Tp* pointer;
+      typedef const _Tp& reference;
+    };
+
+
+
+
+
+  template<typename _Iter>
+    inline constexpr
+    typename iterator_traits<_Iter>::iterator_category
+    __iterator_category(const _Iter&)
+    { return typename iterator_traits<_Iter>::iterator_category(); }
+  template<typename _InIter>
+    using _RequireInputIter = typename
+      enable_if<is_convertible<typename
+  iterator_traits<_InIter>::iterator_category,
+          input_iterator_tag>::value>::type;
+
+
+
+}
+       
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+  template <typename> struct _List_iterator;
+  template <typename> struct _List_const_iterator;
+
+
+  template<typename _InputIterator>
+    inline constexpr
+    typename iterator_traits<_InputIterator>::difference_type
+    __distance(_InputIterator __first, _InputIterator __last,
+               input_iterator_tag)
+    {
+
+     
+
+      typename iterator_traits<_InputIterator>::difference_type __n = 0;
+      while (__first != __last)
+ {
+   ++__first;
+   ++__n;
+ }
+      return __n;
+    }
+
+  template<typename _RandomAccessIterator>
+    inline constexpr
+    typename iterator_traits<_RandomAccessIterator>::difference_type
+    __distance(_RandomAccessIterator __first, _RandomAccessIterator __last,
+               random_access_iterator_tag)
+    {
+
+     
+
+      return __last - __first;
+    }
+
+
+
+  template<typename _Tp>
+    ptrdiff_t
+    __distance(std::_List_iterator<_Tp>,
+        std::_List_iterator<_Tp>,
+        input_iterator_tag);
+
+  template<typename _Tp>
+    ptrdiff_t
+    __distance(std::_List_const_iterator<_Tp>,
+        std::_List_const_iterator<_Tp>,
+        input_iterator_tag);
+  template<typename _InputIterator>
+    inline
+    typename iterator_traits<_InputIterator>::difference_type
+    distance(_InputIterator __first, _InputIterator __last)
+    {
+
+      return std::__distance(__first, __last,
+        std::__iterator_category(__first));
+    }
+
+  template<typename _InputIterator, typename _Distance>
+    inline constexpr void
+    __advance(_InputIterator& __i, _Distance __n, input_iterator_tag)
+    {
+
+     
+      ;
+      while (__n--)
+ ++__i;
+    }
+
+  template<typename _BidirectionalIterator, typename _Distance>
+    inline constexpr void
+    __advance(_BidirectionalIterator& __i, _Distance __n,
+       bidirectional_iterator_tag)
+    {
+
+     
+
+      if (__n > 0)
+        while (__n--)
+   ++__i;
+      else
+        while (__n++)
+   --__i;
+    }
+
+  template<typename _RandomAccessIterator, typename _Distance>
+    inline constexpr void
+    __advance(_RandomAccessIterator& __i, _Distance __n,
+              random_access_iterator_tag)
+    {
+
+     
+
+      if (__builtin_constant_p(__n) && __n == 1)
+ ++__i;
+      else if (__builtin_constant_p(__n) && __n == -1)
+ --__i;
+      else
+ __i += __n;
+    }
+  template<typename _InputIterator, typename _Distance>
+    inline void
+    advance(_InputIterator& __i, _Distance __n)
+    {
+
+      typename iterator_traits<_InputIterator>::difference_type __d = __n;
+      std::__advance(__i, __d, std::__iterator_category(__i));
+    }
+
+
+
+  template<typename _InputIterator>
+    inline _InputIterator
+    next(_InputIterator __x, typename
+  iterator_traits<_InputIterator>::difference_type __n = 1)
+    {
+
+     
+      std::advance(__x, __n);
+      return __x;
+    }
+
+  template<typename _BidirectionalIterator>
+    inline _BidirectionalIterator
+    prev(_BidirectionalIterator __x, typename
+  iterator_traits<_BidirectionalIterator>::difference_type __n = 1)
+    {
+
+     
+
+      std::advance(__x, -__n);
+      return __x;
+    }
+
+
+
+
+}
+       
+extern "C++" {
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  struct __true_type { };
+  struct __false_type { };
+
+  template<bool>
+    struct __truth_type
+    { typedef __false_type __type; };
+
+  template<>
+    struct __truth_type<true>
+    { typedef __true_type __type; };
+
+
+
+  template<class _Sp, class _Tp>
+    struct __traitor
+    {
+      enum { __value = bool(_Sp::__value) || bool(_Tp::__value) };
+      typedef typename __truth_type<__value>::__type __type;
+    };
+
+
+  template<typename, typename>
+    struct __are_same
+    {
+      enum { __value = 0 };
+      typedef __false_type __type;
+    };
+
+  template<typename _Tp>
+    struct __are_same<_Tp, _Tp>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+
+  template<typename _Tp>
+    struct __is_void
+    {
+      enum { __value = 0 };
+      typedef __false_type __type;
+    };
+
+  template<>
+    struct __is_void<void>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+
+
+
+  template<typename _Tp>
+    struct __is_integer
+    {
+      enum { __value = 0 };
+      typedef __false_type __type;
+    };
+
+
+
+
+
+  template<>
+    struct __is_integer<bool>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_integer<char>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_integer<signed char>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_integer<unsigned char>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+
+  template<>
+    struct __is_integer<wchar_t>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+
+
+  template<>
+    struct __is_integer<char16_t>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_integer<char32_t>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+
+  template<>
+    struct __is_integer<short>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_integer<unsigned short>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_integer<int>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_integer<unsigned int>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_integer<long>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_integer<unsigned long>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_integer<long long>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_integer<unsigned long long>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+template<> struct __is_integer<__int128> { enum { __value = 1 }; typedef __true_type __type; }; template<> struct __is_integer<unsigned __int128> { enum { __value = 1 }; typedef __true_type __type; };
+  template<typename _Tp>
+    struct __is_floating
+    {
+      enum { __value = 0 };
+      typedef __false_type __type;
+    };
+
+
+  template<>
+    struct __is_floating<float>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_floating<double>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_floating<long double>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+
+
+
+  template<typename _Tp>
+    struct __is_pointer
+    {
+      enum { __value = 0 };
+      typedef __false_type __type;
+    };
+
+  template<typename _Tp>
+    struct __is_pointer<_Tp*>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+
+
+
+  template<typename _Tp>
+    struct __is_arithmetic
+    : public __traitor<__is_integer<_Tp>, __is_floating<_Tp> >
+    { };
+
+
+
+
+  template<typename _Tp>
+    struct __is_scalar
+    : public __traitor<__is_arithmetic<_Tp>, __is_pointer<_Tp> >
+    { };
+
+
+
+
+  template<typename _Tp>
+    struct __is_char
+    {
+      enum { __value = 0 };
+      typedef __false_type __type;
+    };
+
+  template<>
+    struct __is_char<char>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+
+  template<>
+    struct __is_char<wchar_t>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+
+  template<typename _Tp>
+    struct __is_byte
+    {
+      enum { __value = 0 };
+      typedef __false_type __type;
+    };
+
+  template<>
+    struct __is_byte<char>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_byte<signed char>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<>
+    struct __is_byte<unsigned char>
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+
+
+
+  template<typename _Tp>
+    struct __is_move_iterator
+    {
+      enum { __value = 0 };
+      typedef __false_type __type;
+    };
+
+
+
+  template<typename _Iterator>
+    inline _Iterator
+    __miter_base(_Iterator __it)
+    { return __it; }
+
+
+}
+}
+       
+
+
+
+
+extern "C++" {
+
+namespace __gnu_cxx __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+  template<bool, typename>
+    struct __enable_if
+    { };
+
+  template<typename _Tp>
+    struct __enable_if<true, _Tp>
+    { typedef _Tp __type; };
+
+
+
+  template<bool _Cond, typename _Iftrue, typename _Iffalse>
+    struct __conditional_type
+    { typedef _Iftrue __type; };
+
+  template<typename _Iftrue, typename _Iffalse>
+    struct __conditional_type<false, _Iftrue, _Iffalse>
+    { typedef _Iffalse __type; };
+
+
+
+  template<typename _Tp>
+    struct __add_unsigned
+    {
+    private:
+      typedef __enable_if<std::__is_integer<_Tp>::__value, _Tp> __if_type;
+
+    public:
+      typedef typename __if_type::__type __type;
+    };
+
+  template<>
+    struct __add_unsigned<char>
+    { typedef unsigned char __type; };
+
+  template<>
+    struct __add_unsigned<signed char>
+    { typedef unsigned char __type; };
+
+  template<>
+    struct __add_unsigned<short>
+    { typedef unsigned short __type; };
+
+  template<>
+    struct __add_unsigned<int>
+    { typedef unsigned int __type; };
+
+  template<>
+    struct __add_unsigned<long>
+    { typedef unsigned long __type; };
+
+  template<>
+    struct __add_unsigned<long long>
+    { typedef unsigned long long __type; };
+
+
+  template<>
+    struct __add_unsigned<bool>;
+
+  template<>
+    struct __add_unsigned<wchar_t>;
+
+
+
+  template<typename _Tp>
+    struct __remove_unsigned
+    {
+    private:
+      typedef __enable_if<std::__is_integer<_Tp>::__value, _Tp> __if_type;
+
+    public:
+      typedef typename __if_type::__type __type;
+    };
+
+  template<>
+    struct __remove_unsigned<char>
+    { typedef signed char __type; };
+
+  template<>
+    struct __remove_unsigned<unsigned char>
+    { typedef signed char __type; };
+
+  template<>
+    struct __remove_unsigned<unsigned short>
+    { typedef short __type; };
+
+  template<>
+    struct __remove_unsigned<unsigned int>
+    { typedef int __type; };
+
+  template<>
+    struct __remove_unsigned<unsigned long>
+    { typedef long __type; };
+
+  template<>
+    struct __remove_unsigned<unsigned long long>
+    { typedef long long __type; };
+
+
+  template<>
+    struct __remove_unsigned<bool>;
+
+  template<>
+    struct __remove_unsigned<wchar_t>;
+
+
+
+  template<typename _Type>
+    inline bool
+    __is_null_pointer(_Type* __ptr)
+    { return __ptr == 0; }
+
+  template<typename _Type>
+    inline bool
+    __is_null_pointer(_Type)
+    { return false; }
+
+
+  inline bool
+  __is_null_pointer(std::nullptr_t)
+  { return true; }
+
+
+
+  template<typename _Tp, bool = std::__is_integer<_Tp>::__value>
+    struct __promote
+    { typedef double __type; };
+
+
+
+
+  template<typename _Tp>
+    struct __promote<_Tp, false>
+    { };
+
+  template<>
+    struct __promote<long double>
+    { typedef long double __type; };
+
+  template<>
+    struct __promote<double>
+    { typedef double __type; };
+
+  template<>
+    struct __promote<float>
+    { typedef float __type; };
+
+  template<typename _Tp, typename _Up,
+           typename _Tp2 = typename __promote<_Tp>::__type,
+           typename _Up2 = typename __promote<_Up>::__type>
+    struct __promote_2
+    {
+      typedef __typeof__(_Tp2() + _Up2()) __type;
+    };
+
+  template<typename _Tp, typename _Up, typename _Vp,
+           typename _Tp2 = typename __promote<_Tp>::__type,
+           typename _Up2 = typename __promote<_Up>::__type,
+           typename _Vp2 = typename __promote<_Vp>::__type>
+    struct __promote_3
+    {
+      typedef __typeof__(_Tp2() + _Up2() + _Vp2()) __type;
+    };
+
+  template<typename _Tp, typename _Up, typename _Vp, typename _Wp,
+           typename _Tp2 = typename __promote<_Tp>::__type,
+           typename _Up2 = typename __promote<_Up>::__type,
+           typename _Vp2 = typename __promote<_Vp>::__type,
+           typename _Wp2 = typename __promote<_Wp>::__type>
+    struct __promote_4
+    {
+      typedef __typeof__(_Tp2() + _Up2() + _Vp2() + _Wp2()) __type;
+    };
+
+
+}
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  class __undefined;
+
+
+  template<typename _Tp>
+    struct __get_first_arg
+    { using type = __undefined; };
+
+  template<template<typename, typename...> class _Template, typename _Tp,
+           typename... _Types>
+    struct __get_first_arg<_Template<_Tp, _Types...>>
+    { using type = _Tp; };
+
+  template<typename _Tp>
+    using __get_first_arg_t = typename __get_first_arg<_Tp>::type;
+
+
+  template<typename _Tp, typename _Up>
+    struct __replace_first_arg
+    { };
+
+  template<template<typename, typename...> class _Template, typename _Up,
+           typename _Tp, typename... _Types>
+    struct __replace_first_arg<_Template<_Tp, _Types...>, _Up>
+    { using type = _Template<_Up, _Types...>; };
+
+  template<typename _Tp, typename _Up>
+    using __replace_first_arg_t = typename __replace_first_arg<_Tp, _Up>::type;
+
+  template<typename _Tp>
+    using __make_not_void
+      = typename conditional<is_void<_Tp>::value, __undefined, _Tp>::type;
+
+
+
+
+
+  template<typename _Ptr>
+    struct pointer_traits
+    {
+    private:
+      template<typename _Tp>
+ using __element_type = typename _Tp::element_type;
+
+      template<typename _Tp>
+ using __difference_type = typename _Tp::difference_type;
+
+      template<typename _Tp, typename _Up, typename = void>
+ struct __rebind : __replace_first_arg<_Tp, _Up> { };
+
+      template<typename _Tp, typename _Up>
+ struct __rebind<_Tp, _Up, __void_t<typename _Tp::template rebind<_Up>>>
+ { using type = typename _Tp::template rebind<_Up>; };
+
+    public:
+
+      using pointer = _Ptr;
+
+
+      using element_type
+ = __detected_or_t<__get_first_arg_t<_Ptr>, __element_type, _Ptr>;
+
+
+      using difference_type
+ = __detected_or_t<ptrdiff_t, __difference_type, _Ptr>;
+
+
+      template<typename _Up>
+        using rebind = typename __rebind<_Ptr, _Up>::type;
+
+      static _Ptr
+      pointer_to(__make_not_void<element_type>& __e)
+      { return _Ptr::pointer_to(__e); }
+
+      static_assert(!is_same<element_type, __undefined>::value,
+   "pointer type defines element_type or is like SomePointer<T, Args>");
+    };
+
+
+
+
+
+  template<typename _Tp>
+    struct pointer_traits<_Tp*>
+    {
+
+      typedef _Tp* pointer;
+
+      typedef _Tp element_type;
+
+      typedef ptrdiff_t difference_type;
+
+      template<typename _Up>
+        using rebind = _Up*;
+
+
+
+
+
+
+      static pointer
+      pointer_to(__make_not_void<element_type>& __r) noexcept
+      { return std::addressof(__r); }
+    };
+
+
+  template<typename _Ptr, typename _Tp>
+    using __ptr_rebind = typename pointer_traits<_Ptr>::template rebind<_Tp>;
+
+  template<typename _Tp>
+    constexpr _Tp*
+    __to_address(_Tp* __ptr) noexcept
+    {
+      static_assert(!std::is_function<_Tp>::value, "not a function pointer");
+      return __ptr;
+    }
+
+
+  template<typename _Ptr>
+    constexpr typename std::pointer_traits<_Ptr>::element_type*
+    __to_address(const _Ptr& __ptr)
+    { return std::__to_address(__ptr.operator->()); }
+
+}
+
+
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _Iterator>
+    class reverse_iterator
+    : public iterator<typename iterator_traits<_Iterator>::iterator_category,
+        typename iterator_traits<_Iterator>::value_type,
+        typename iterator_traits<_Iterator>::difference_type,
+        typename iterator_traits<_Iterator>::pointer,
+                      typename iterator_traits<_Iterator>::reference>
+    {
+    protected:
+      _Iterator current;
+
+      typedef iterator_traits<_Iterator> __traits_type;
+
+    public:
+      typedef _Iterator iterator_type;
+      typedef typename __traits_type::difference_type difference_type;
+      typedef typename __traits_type::pointer pointer;
+      typedef typename __traits_type::reference reference;
+
+
+
+
+
+
+
+     
+      reverse_iterator() : current() { }
+
+
+
+
+      explicit
+      reverse_iterator(iterator_type __x) : current(__x) { }
+
+
+
+
+     
+      reverse_iterator(const reverse_iterator& __x)
+      : current(__x.current) { }
+
+
+
+
+
+      template<typename _Iter>
+
+        reverse_iterator(const reverse_iterator<_Iter>& __x)
+ : current(__x.base()) { }
+
+
+
+
+      iterator_type
+      base() const
+      { return current; }
+      reference
+      operator*() const
+      {
+ _Iterator __tmp = current;
+ return *--__tmp;
+      }
+
+
+
+
+
+
+      pointer
+      operator->() const
+      { return &(operator*()); }
+
+
+
+
+
+
+      reverse_iterator&
+      operator++()
+      {
+ --current;
+ return *this;
+      }
+
+
+
+
+
+
+      reverse_iterator
+      operator++(int)
+      {
+ reverse_iterator __tmp = *this;
+ --current;
+ return __tmp;
+      }
+
+
+
+
+
+
+      reverse_iterator&
+      operator--()
+      {
+ ++current;
+ return *this;
+      }
+
+
+
+
+
+
+      reverse_iterator
+      operator--(int)
+      {
+ reverse_iterator __tmp = *this;
+ ++current;
+ return __tmp;
+      }
+
+
+
+
+
+
+      reverse_iterator
+      operator+(difference_type __n) const
+      { return reverse_iterator(current - __n); }
+
+
+
+
+
+
+
+      reverse_iterator&
+      operator+=(difference_type __n)
+      {
+ current -= __n;
+ return *this;
+      }
+
+
+
+
+
+
+      reverse_iterator
+      operator-(difference_type __n) const
+      { return reverse_iterator(current + __n); }
+
+
+
+
+
+
+
+      reverse_iterator&
+      operator-=(difference_type __n)
+      {
+ current += __n;
+ return *this;
+      }
+
+
+
+
+
+
+      reference
+      operator[](difference_type __n) const
+      { return *(*this + __n); }
+    };
+  template<typename _Iterator>
+    inline bool
+    operator==(const reverse_iterator<_Iterator>& __x,
+        const reverse_iterator<_Iterator>& __y)
+    { return __x.base() == __y.base(); }
+
+  template<typename _Iterator>
+    inline bool
+    operator<(const reverse_iterator<_Iterator>& __x,
+       const reverse_iterator<_Iterator>& __y)
+    { return __y.base() < __x.base(); }
+
+  template<typename _Iterator>
+    inline bool
+    operator!=(const reverse_iterator<_Iterator>& __x,
+        const reverse_iterator<_Iterator>& __y)
+    { return !(__x == __y); }
+
+  template<typename _Iterator>
+    inline bool
+    operator>(const reverse_iterator<_Iterator>& __x,
+       const reverse_iterator<_Iterator>& __y)
+    { return __y < __x; }
+
+  template<typename _Iterator>
+    inline bool
+    operator<=(const reverse_iterator<_Iterator>& __x,
+        const reverse_iterator<_Iterator>& __y)
+    { return !(__y < __x); }
+
+  template<typename _Iterator>
+    inline bool
+    operator>=(const reverse_iterator<_Iterator>& __x,
+        const reverse_iterator<_Iterator>& __y)
+    { return !(__x < __y); }
+
+
+
+  template<typename _IteratorL, typename _IteratorR>
+    inline bool
+    operator==(const reverse_iterator<_IteratorL>& __x,
+        const reverse_iterator<_IteratorR>& __y)
+    { return __x.base() == __y.base(); }
+
+  template<typename _IteratorL, typename _IteratorR>
+    inline bool
+    operator<(const reverse_iterator<_IteratorL>& __x,
+       const reverse_iterator<_IteratorR>& __y)
+    { return __y.base() < __x.base(); }
+
+  template<typename _IteratorL, typename _IteratorR>
+    inline bool
+    operator!=(const reverse_iterator<_IteratorL>& __x,
+        const reverse_iterator<_IteratorR>& __y)
+    { return !(__x == __y); }
+
+  template<typename _IteratorL, typename _IteratorR>
+    inline bool
+    operator>(const reverse_iterator<_IteratorL>& __x,
+       const reverse_iterator<_IteratorR>& __y)
+    { return __y < __x; }
+
+  template<typename _IteratorL, typename _IteratorR>
+    inline bool
+    operator<=(const reverse_iterator<_IteratorL>& __x,
+        const reverse_iterator<_IteratorR>& __y)
+    { return !(__y < __x); }
+
+  template<typename _IteratorL, typename _IteratorR>
+    inline bool
+    operator>=(const reverse_iterator<_IteratorL>& __x,
+        const reverse_iterator<_IteratorR>& __y)
+    { return !(__x < __y); }
+  template<typename _IteratorL, typename _IteratorR>
+    inline auto
+    operator-(const reverse_iterator<_IteratorL>& __x,
+       const reverse_iterator<_IteratorR>& __y)
+    -> decltype(__y.base() - __x.base())
+    { return __y.base() - __x.base(); }
+
+
+  template<typename _Iterator>
+    inline reverse_iterator<_Iterator>
+    operator+(typename reverse_iterator<_Iterator>::difference_type __n,
+       const reverse_iterator<_Iterator>& __x)
+    { return reverse_iterator<_Iterator>(__x.base() - __n); }
+
+
+
+  template<typename _Iterator>
+    inline reverse_iterator<_Iterator>
+    __make_reverse_iterator(_Iterator __i)
+    { return reverse_iterator<_Iterator>(__i); }
+
+
+
+
+
+
+
+  template<typename _Iterator>
+    inline reverse_iterator<_Iterator>
+    make_reverse_iterator(_Iterator __i)
+    { return reverse_iterator<_Iterator>(__i); }
+
+
+
+
+  template<typename _Iterator>
+    auto
+    __niter_base(reverse_iterator<_Iterator> __it)
+    -> decltype(__make_reverse_iterator(__niter_base(__it.base())))
+    { return __make_reverse_iterator(__niter_base(__it.base())); }
+
+  template<typename _Iterator>
+    struct __is_move_iterator<reverse_iterator<_Iterator> >
+      : __is_move_iterator<_Iterator>
+    { };
+
+  template<typename _Iterator>
+    auto
+    __miter_base(reverse_iterator<_Iterator> __it)
+    -> decltype(__make_reverse_iterator(__miter_base(__it.base())))
+    { return __make_reverse_iterator(__miter_base(__it.base())); }
+  template<typename _Container>
+    class back_insert_iterator
+    : public iterator<output_iterator_tag, void, void, void, void>
+    {
+    protected:
+      _Container* container;
+
+    public:
+
+      typedef _Container container_type;
+
+
+      explicit
+      back_insert_iterator(_Container& __x)
+      : container(std::__addressof(__x)) { }
+      back_insert_iterator&
+      operator=(const typename _Container::value_type& __value)
+      {
+ container->push_back(__value);
+ return *this;
+      }
+
+      back_insert_iterator&
+      operator=(typename _Container::value_type&& __value)
+      {
+ container->push_back(std::move(__value));
+ return *this;
+      }
+
+
+
+      back_insert_iterator&
+      operator*()
+      { return *this; }
+
+
+      back_insert_iterator&
+      operator++()
+      { return *this; }
+
+
+      back_insert_iterator
+      operator++(int)
+      { return *this; }
+    };
+  template<typename _Container>
+    inline back_insert_iterator<_Container>
+    back_inserter(_Container& __x)
+    { return back_insert_iterator<_Container>(__x); }
+  template<typename _Container>
+    class front_insert_iterator
+    : public iterator<output_iterator_tag, void, void, void, void>
+    {
+    protected:
+      _Container* container;
+
+    public:
+
+      typedef _Container container_type;
+
+
+      explicit front_insert_iterator(_Container& __x)
+      : container(std::__addressof(__x)) { }
+      front_insert_iterator&
+      operator=(const typename _Container::value_type& __value)
+      {
+ container->push_front(__value);
+ return *this;
+      }
+
+      front_insert_iterator&
+      operator=(typename _Container::value_type&& __value)
+      {
+ container->push_front(std::move(__value));
+ return *this;
+      }
+
+
+
+      front_insert_iterator&
+      operator*()
+      { return *this; }
+
+
+      front_insert_iterator&
+      operator++()
+      { return *this; }
+
+
+      front_insert_iterator
+      operator++(int)
+      { return *this; }
+    };
+  template<typename _Container>
+    inline front_insert_iterator<_Container>
+    front_inserter(_Container& __x)
+    { return front_insert_iterator<_Container>(__x); }
+  template<typename _Container>
+    class insert_iterator
+    : public iterator<output_iterator_tag, void, void, void, void>
+    {
+    protected:
+      _Container* container;
+      typename _Container::iterator iter;
+
+    public:
+
+      typedef _Container container_type;
+
+
+
+
+
+      insert_iterator(_Container& __x, typename _Container::iterator __i)
+      : container(std::__addressof(__x)), iter(__i) {}
+      insert_iterator&
+      operator=(const typename _Container::value_type& __value)
+      {
+ iter = container->insert(iter, __value);
+ ++iter;
+ return *this;
+      }
+
+      insert_iterator&
+      operator=(typename _Container::value_type&& __value)
+      {
+ iter = container->insert(iter, std::move(__value));
+ ++iter;
+ return *this;
+      }
+
+
+
+      insert_iterator&
+      operator*()
+      { return *this; }
+
+
+      insert_iterator&
+      operator++()
+      { return *this; }
+
+
+      insert_iterator&
+      operator++(int)
+      { return *this; }
+    };
+  template<typename _Container, typename _Iterator>
+    inline insert_iterator<_Container>
+    inserter(_Container& __x, _Iterator __i)
+    {
+      return insert_iterator<_Container>(__x,
+      typename _Container::iterator(__i));
+    }
+
+
+
+
+}
+
+namespace __gnu_cxx __attribute__ ((__visibility__ ("default")))
+{
+
+  using std::iterator_traits;
+  using std::iterator;
+  template<typename _Iterator, typename _Container>
+    class __normal_iterator
+    {
+    protected:
+      _Iterator _M_current;
+
+      typedef iterator_traits<_Iterator> __traits_type;
+
+    public:
+      typedef _Iterator iterator_type;
+      typedef typename __traits_type::iterator_category iterator_category;
+      typedef typename __traits_type::value_type value_type;
+      typedef typename __traits_type::difference_type difference_type;
+      typedef typename __traits_type::reference reference;
+      typedef typename __traits_type::pointer pointer;
+
+      constexpr __normal_iterator() noexcept
+      : _M_current(_Iterator()) { }
+
+      explicit
+      __normal_iterator(const _Iterator& __i) noexcept
+      : _M_current(__i) { }
+
+
+      template<typename _Iter>
+        __normal_iterator(const __normal_iterator<_Iter,
+     typename __enable_if<
+              (std::__are_same<_Iter, typename _Container::pointer>::__value),
+        _Container>::__type>& __i) noexcept
+        : _M_current(__i.base()) { }
+
+
+      reference
+      operator*() const noexcept
+      { return *_M_current; }
+
+      pointer
+      operator->() const noexcept
+      { return _M_current; }
+
+      __normal_iterator&
+      operator++() noexcept
+      {
+ ++_M_current;
+ return *this;
+      }
+
+      __normal_iterator
+      operator++(int) noexcept
+      { return __normal_iterator(_M_current++); }
+
+
+      __normal_iterator&
+      operator--() noexcept
+      {
+ --_M_current;
+ return *this;
+      }
+
+      __normal_iterator
+      operator--(int) noexcept
+      { return __normal_iterator(_M_current--); }
+
+
+      reference
+      operator[](difference_type __n) const noexcept
+      { return _M_current[__n]; }
+
+      __normal_iterator&
+      operator+=(difference_type __n) noexcept
+      { _M_current += __n; return *this; }
+
+      __normal_iterator
+      operator+(difference_type __n) const noexcept
+      { return __normal_iterator(_M_current + __n); }
+
+      __normal_iterator&
+      operator-=(difference_type __n) noexcept
+      { _M_current -= __n; return *this; }
+
+      __normal_iterator
+      operator-(difference_type __n) const noexcept
+      { return __normal_iterator(_M_current - __n); }
+
+      const _Iterator&
+      base() const noexcept
+      { return _M_current; }
+    };
+  template<typename _IteratorL, typename _IteratorR, typename _Container>
+    inline bool
+    operator==(const __normal_iterator<_IteratorL, _Container>& __lhs,
+        const __normal_iterator<_IteratorR, _Container>& __rhs)
+    noexcept
+    { return __lhs.base() == __rhs.base(); }
+
+  template<typename _Iterator, typename _Container>
+    inline bool
+    operator==(const __normal_iterator<_Iterator, _Container>& __lhs,
+        const __normal_iterator<_Iterator, _Container>& __rhs)
+    noexcept
+    { return __lhs.base() == __rhs.base(); }
+
+  template<typename _IteratorL, typename _IteratorR, typename _Container>
+    inline bool
+    operator!=(const __normal_iterator<_IteratorL, _Container>& __lhs,
+        const __normal_iterator<_IteratorR, _Container>& __rhs)
+    noexcept
+    { return __lhs.base() != __rhs.base(); }
+
+  template<typename _Iterator, typename _Container>
+    inline bool
+    operator!=(const __normal_iterator<_Iterator, _Container>& __lhs,
+        const __normal_iterator<_Iterator, _Container>& __rhs)
+    noexcept
+    { return __lhs.base() != __rhs.base(); }
+
+
+  template<typename _IteratorL, typename _IteratorR, typename _Container>
+    inline bool
+    operator<(const __normal_iterator<_IteratorL, _Container>& __lhs,
+       const __normal_iterator<_IteratorR, _Container>& __rhs)
+    noexcept
+    { return __lhs.base() < __rhs.base(); }
+
+  template<typename _Iterator, typename _Container>
+    inline bool
+    operator<(const __normal_iterator<_Iterator, _Container>& __lhs,
+       const __normal_iterator<_Iterator, _Container>& __rhs)
+    noexcept
+    { return __lhs.base() < __rhs.base(); }
+
+  template<typename _IteratorL, typename _IteratorR, typename _Container>
+    inline bool
+    operator>(const __normal_iterator<_IteratorL, _Container>& __lhs,
+       const __normal_iterator<_IteratorR, _Container>& __rhs)
+    noexcept
+    { return __lhs.base() > __rhs.base(); }
+
+  template<typename _Iterator, typename _Container>
+    inline bool
+    operator>(const __normal_iterator<_Iterator, _Container>& __lhs,
+       const __normal_iterator<_Iterator, _Container>& __rhs)
+    noexcept
+    { return __lhs.base() > __rhs.base(); }
+
+  template<typename _IteratorL, typename _IteratorR, typename _Container>
+    inline bool
+    operator<=(const __normal_iterator<_IteratorL, _Container>& __lhs,
+        const __normal_iterator<_IteratorR, _Container>& __rhs)
+    noexcept
+    { return __lhs.base() <= __rhs.base(); }
+
+  template<typename _Iterator, typename _Container>
+    inline bool
+    operator<=(const __normal_iterator<_Iterator, _Container>& __lhs,
+        const __normal_iterator<_Iterator, _Container>& __rhs)
+    noexcept
+    { return __lhs.base() <= __rhs.base(); }
+
+  template<typename _IteratorL, typename _IteratorR, typename _Container>
+    inline bool
+    operator>=(const __normal_iterator<_IteratorL, _Container>& __lhs,
+        const __normal_iterator<_IteratorR, _Container>& __rhs)
+    noexcept
+    { return __lhs.base() >= __rhs.base(); }
+
+  template<typename _Iterator, typename _Container>
+    inline bool
+    operator>=(const __normal_iterator<_Iterator, _Container>& __lhs,
+        const __normal_iterator<_Iterator, _Container>& __rhs)
+    noexcept
+    { return __lhs.base() >= __rhs.base(); }
+
+
+
+
+
+  template<typename _IteratorL, typename _IteratorR, typename _Container>
+
+
+    inline auto
+    operator-(const __normal_iterator<_IteratorL, _Container>& __lhs,
+       const __normal_iterator<_IteratorR, _Container>& __rhs) noexcept
+    -> decltype(__lhs.base() - __rhs.base())
+
+
+
+
+
+    { return __lhs.base() - __rhs.base(); }
+
+  template<typename _Iterator, typename _Container>
+    inline typename __normal_iterator<_Iterator, _Container>::difference_type
+    operator-(const __normal_iterator<_Iterator, _Container>& __lhs,
+       const __normal_iterator<_Iterator, _Container>& __rhs)
+    noexcept
+    { return __lhs.base() - __rhs.base(); }
+
+  template<typename _Iterator, typename _Container>
+    inline __normal_iterator<_Iterator, _Container>
+    operator+(typename __normal_iterator<_Iterator, _Container>::difference_type
+       __n, const __normal_iterator<_Iterator, _Container>& __i)
+    noexcept
+    { return __normal_iterator<_Iterator, _Container>(__i.base() + __n); }
+
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  template<typename _Iterator, typename _Container>
+    _Iterator
+    __niter_base(__gnu_cxx::__normal_iterator<_Iterator, _Container> __it)
+    { return __it.base(); }
+  template<typename _Iterator>
+    class move_iterator
+    {
+    protected:
+      _Iterator _M_current;
+
+      typedef iterator_traits<_Iterator> __traits_type;
+      typedef typename __traits_type::reference __base_ref;
+
+    public:
+      typedef _Iterator iterator_type;
+      typedef typename __traits_type::iterator_category iterator_category;
+      typedef typename __traits_type::value_type value_type;
+      typedef typename __traits_type::difference_type difference_type;
+
+      typedef _Iterator pointer;
+
+
+      typedef typename conditional<is_reference<__base_ref>::value,
+    typename remove_reference<__base_ref>::type&&,
+    __base_ref>::type reference;
+
+     
+      move_iterator()
+      : _M_current() { }
+
+      explicit
+      move_iterator(iterator_type __i)
+      : _M_current(__i) { }
+
+      template<typename _Iter>
+
+ move_iterator(const move_iterator<_Iter>& __i)
+ : _M_current(__i.base()) { }
+
+      iterator_type
+      base() const
+      { return _M_current; }
+
+      reference
+      operator*() const
+      { return static_cast<reference>(*_M_current); }
+
+      pointer
+      operator->() const
+      { return _M_current; }
+
+      move_iterator&
+      operator++()
+      {
+ ++_M_current;
+ return *this;
+      }
+
+      move_iterator
+      operator++(int)
+      {
+ move_iterator __tmp = *this;
+ ++_M_current;
+ return __tmp;
+      }
+
+      move_iterator&
+      operator--()
+      {
+ --_M_current;
+ return *this;
+      }
+
+      move_iterator
+      operator--(int)
+      {
+ move_iterator __tmp = *this;
+ --_M_current;
+ return __tmp;
+      }
+
+      move_iterator
+      operator+(difference_type __n) const
+      { return move_iterator(_M_current + __n); }
+
+      move_iterator&
+      operator+=(difference_type __n)
+      {
+ _M_current += __n;
+ return *this;
+      }
+
+      move_iterator
+      operator-(difference_type __n) const
+      { return move_iterator(_M_current - __n); }
+
+      move_iterator&
+      operator-=(difference_type __n)
+      {
+ _M_current -= __n;
+ return *this;
+      }
+
+      reference
+      operator[](difference_type __n) const
+      { return std::move(_M_current[__n]); }
+    };
+
+
+
+
+  template<typename _IteratorL, typename _IteratorR>
+    inline bool
+    operator==(const move_iterator<_IteratorL>& __x,
+        const move_iterator<_IteratorR>& __y)
+    { return __x.base() == __y.base(); }
+
+  template<typename _Iterator>
+    inline bool
+    operator==(const move_iterator<_Iterator>& __x,
+        const move_iterator<_Iterator>& __y)
+    { return __x.base() == __y.base(); }
+
+  template<typename _IteratorL, typename _IteratorR>
+    inline bool
+    operator!=(const move_iterator<_IteratorL>& __x,
+        const move_iterator<_IteratorR>& __y)
+    { return !(__x == __y); }
+
+  template<typename _Iterator>
+    inline bool
+    operator!=(const move_iterator<_Iterator>& __x,
+        const move_iterator<_Iterator>& __y)
+    { return !(__x == __y); }
+
+  template<typename _IteratorL, typename _IteratorR>
+    inline bool
+    operator<(const move_iterator<_IteratorL>& __x,
+       const move_iterator<_IteratorR>& __y)
+    { return __x.base() < __y.base(); }
+
+  template<typename _Iterator>
+    inline bool
+    operator<(const move_iterator<_Iterator>& __x,
+       const move_iterator<_Iterator>& __y)
+    { return __x.base() < __y.base(); }
+
+  template<typename _IteratorL, typename _IteratorR>
+    inline bool
+    operator<=(const move_iterator<_IteratorL>& __x,
+        const move_iterator<_IteratorR>& __y)
+    { return !(__y < __x); }
+
+  template<typename _Iterator>
+    inline bool
+    operator<=(const move_iterator<_Iterator>& __x,
+        const move_iterator<_Iterator>& __y)
+    { return !(__y < __x); }
+
+  template<typename _IteratorL, typename _IteratorR>
+    inline bool
+    operator>(const move_iterator<_IteratorL>& __x,
+       const move_iterator<_IteratorR>& __y)
+    { return __y < __x; }
+
+  template<typename _Iterator>
+    inline bool
+    operator>(const move_iterator<_Iterator>& __x,
+       const move_iterator<_Iterator>& __y)
+    { return __y < __x; }
+
+  template<typename _IteratorL, typename _IteratorR>
+    inline bool
+    operator>=(const move_iterator<_IteratorL>& __x,
+        const move_iterator<_IteratorR>& __y)
+    { return !(__x < __y); }
+
+  template<typename _Iterator>
+    inline bool
+    operator>=(const move_iterator<_Iterator>& __x,
+        const move_iterator<_Iterator>& __y)
+    { return !(__x < __y); }
+
+
+  template<typename _IteratorL, typename _IteratorR>
+    inline auto
+    operator-(const move_iterator<_IteratorL>& __x,
+       const move_iterator<_IteratorR>& __y)
+    -> decltype(__x.base() - __y.base())
+    { return __x.base() - __y.base(); }
+
+  template<typename _Iterator>
+    inline move_iterator<_Iterator>
+    operator+(typename move_iterator<_Iterator>::difference_type __n,
+       const move_iterator<_Iterator>& __x)
+    { return __x + __n; }
+
+  template<typename _Iterator>
+    inline move_iterator<_Iterator>
+    make_move_iterator(_Iterator __i)
+    { return move_iterator<_Iterator>(__i); }
+
+  template<typename _Iterator, typename _ReturnType
+    = typename conditional<__move_if_noexcept_cond
+      <typename iterator_traits<_Iterator>::value_type>::value,
+                _Iterator, move_iterator<_Iterator>>::type>
+    inline _ReturnType
+    __make_move_if_noexcept_iterator(_Iterator __i)
+    { return _ReturnType(__i); }
+
+
+
+  template<typename _Tp, typename _ReturnType
+    = typename conditional<__move_if_noexcept_cond<_Tp>::value,
+      const _Tp*, move_iterator<_Tp*>>::type>
+    inline _ReturnType
+    __make_move_if_noexcept_iterator(_Tp* __i)
+    { return _ReturnType(__i); }
+
+
+
+  template<typename _Iterator>
+    auto
+    __niter_base(move_iterator<_Iterator> __it)
+    -> decltype(make_move_iterator(__niter_base(__it.base())))
+    { return make_move_iterator(__niter_base(__it.base())); }
+
+  template<typename _Iterator>
+    struct __is_move_iterator<move_iterator<_Iterator> >
+    {
+      enum { __value = 1 };
+      typedef __true_type __type;
+    };
+
+  template<typename _Iterator>
+    auto
+    __miter_base(move_iterator<_Iterator> __it)
+    -> decltype(__miter_base(__it.base()))
+    { return __miter_base(__it.base()); }
+
+}
+       
+
+       
+
+       
+
+
+       
+
+
+       
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename>
+    class allocator;
+
+  template<>
+    class allocator<void>;
+
+
+  template<typename, typename>
+    struct uses_allocator;
+
+
+
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+
+
+  template<class _CharT>
+    struct char_traits;
+
+  template<> struct char_traits<char>;
+
+
+  template<> struct char_traits<wchar_t>;
+
+
+
+
+  template<> struct char_traits<char16_t>;
+  template<> struct char_traits<char32_t>;
+
+
+namespace __cxx11 {
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT>,
+           typename _Alloc = allocator<_CharT> >
+    class basic_string;
+
+
+  typedef basic_string<char> string;
+
+
+
+  typedef basic_string<wchar_t> wstring;
+
+
+
+
+
+  typedef basic_string<char16_t> u16string;
+
+
+  typedef basic_string<char32_t> u32string;
+
+
+}
+
+
+
+
+}
+       
+
+       
+
+
+
+
+
+
+
+
+
+
+
+
+
+typedef __builtin_va_list __gnuc_va_list;
+
+
+typedef unsigned int wint_t;
+
+
+
+typedef struct
+{
+  int __count;
+  union
+  {
+    unsigned int __wch;
+    char __wchb[4];
+  } __value;
+} __mbstate_t;
+
+typedef __mbstate_t mbstate_t;
+
+
+
+struct _IO_FILE;
+typedef struct _IO_FILE __FILE;
+
+
+
+
+
+struct _IO_FILE;
+
+
+typedef struct _IO_FILE FILE;
+extern "C" {
+
+
+
+struct tm;
+
+
+
+extern wchar_t *wcscpy (wchar_t *__restrict __dest,
+   const wchar_t *__restrict __src)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern wchar_t *wcsncpy (wchar_t *__restrict __dest,
+    const wchar_t *__restrict __src, size_t __n)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern wchar_t *wcscat (wchar_t *__restrict __dest,
+   const wchar_t *__restrict __src)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+extern wchar_t *wcsncat (wchar_t *__restrict __dest,
+    const wchar_t *__restrict __src, size_t __n)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int wcscmp (const wchar_t *__s1, const wchar_t *__s2)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+
+extern int wcsncmp (const wchar_t *__s1, const wchar_t *__s2, size_t __n)
+     throw () __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+extern int wcscasecmp (const wchar_t *__s1, const wchar_t *__s2) throw ();
+
+
+extern int wcsncasecmp (const wchar_t *__s1, const wchar_t *__s2,
+   size_t __n) throw ();
+
+
+
+extern int wcscasecmp_l (const wchar_t *__s1, const wchar_t *__s2,
+    locale_t __loc) throw ();
+
+extern int wcsncasecmp_l (const wchar_t *__s1, const wchar_t *__s2,
+     size_t __n, locale_t __loc) throw ();
+
+
+
+
+extern int wcscoll (const wchar_t *__s1, const wchar_t *__s2) throw ();
+
+
+
+extern size_t wcsxfrm (wchar_t *__restrict __s1,
+         const wchar_t *__restrict __s2, size_t __n) throw ();
+
+
+
+
+
+
+
+extern int wcscoll_l (const wchar_t *__s1, const wchar_t *__s2,
+        locale_t __loc) throw ();
+
+
+
+
+extern size_t wcsxfrm_l (wchar_t *__s1, const wchar_t *__s2,
+    size_t __n, locale_t __loc) throw ();
+
+
+extern wchar_t *wcsdup (const wchar_t *__s) throw () __attribute__ ((__malloc__));
+
+
+
+
+extern "C++" wchar_t *wcschr (wchar_t *__wcs, wchar_t __wc)
+     throw () __asm ("wcschr") __attribute__ ((__pure__));
+extern "C++" const wchar_t *wcschr (const wchar_t *__wcs, wchar_t __wc)
+     throw () __asm ("wcschr") __attribute__ ((__pure__));
+
+
+
+
+
+
+extern "C++" wchar_t *wcsrchr (wchar_t *__wcs, wchar_t __wc)
+     throw () __asm ("wcsrchr") __attribute__ ((__pure__));
+extern "C++" const wchar_t *wcsrchr (const wchar_t *__wcs, wchar_t __wc)
+     throw () __asm ("wcsrchr") __attribute__ ((__pure__));
+extern wchar_t *wcschrnul (const wchar_t *__s, wchar_t __wc)
+     throw () __attribute__ ((__pure__));
+
+
+
+
+extern size_t wcscspn (const wchar_t *__wcs, const wchar_t *__reject)
+     throw () __attribute__ ((__pure__));
+
+
+extern size_t wcsspn (const wchar_t *__wcs, const wchar_t *__accept)
+     throw () __attribute__ ((__pure__));
+
+
+extern "C++" wchar_t *wcspbrk (wchar_t *__wcs, const wchar_t *__accept)
+     throw () __asm ("wcspbrk") __attribute__ ((__pure__));
+extern "C++" const wchar_t *wcspbrk (const wchar_t *__wcs,
+         const wchar_t *__accept)
+     throw () __asm ("wcspbrk") __attribute__ ((__pure__));
+
+
+
+
+
+
+extern "C++" wchar_t *wcsstr (wchar_t *__haystack, const wchar_t *__needle)
+     throw () __asm ("wcsstr") __attribute__ ((__pure__));
+extern "C++" const wchar_t *wcsstr (const wchar_t *__haystack,
+        const wchar_t *__needle)
+     throw () __asm ("wcsstr") __attribute__ ((__pure__));
+
+
+
+
+
+
+extern wchar_t *wcstok (wchar_t *__restrict __s,
+   const wchar_t *__restrict __delim,
+   wchar_t **__restrict __ptr) throw ();
+
+
+extern size_t wcslen (const wchar_t *__s) throw () __attribute__ ((__pure__));
+
+
+
+
+extern "C++" wchar_t *wcswcs (wchar_t *__haystack, const wchar_t *__needle)
+     throw () __asm ("wcswcs") __attribute__ ((__pure__));
+extern "C++" const wchar_t *wcswcs (const wchar_t *__haystack,
+        const wchar_t *__needle)
+     throw () __asm ("wcswcs") __attribute__ ((__pure__));
+extern size_t wcsnlen (const wchar_t *__s, size_t __maxlen)
+     throw () __attribute__ ((__pure__));
+
+
+
+
+
+extern "C++" wchar_t *wmemchr (wchar_t *__s, wchar_t __c, size_t __n)
+     throw () __asm ("wmemchr") __attribute__ ((__pure__));
+extern "C++" const wchar_t *wmemchr (const wchar_t *__s, wchar_t __c,
+         size_t __n)
+     throw () __asm ("wmemchr") __attribute__ ((__pure__));
+
+
+
+
+
+
+extern int wmemcmp (const wchar_t *__s1, const wchar_t *__s2, size_t __n)
+     throw () __attribute__ ((__pure__));
+
+
+extern wchar_t *wmemcpy (wchar_t *__restrict __s1,
+    const wchar_t *__restrict __s2, size_t __n) throw ();
+
+
+
+extern wchar_t *wmemmove (wchar_t *__s1, const wchar_t *__s2, size_t __n)
+     throw ();
+
+
+extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) throw ();
+
+
+
+
+extern wchar_t *wmempcpy (wchar_t *__restrict __s1,
+     const wchar_t *__restrict __s2, size_t __n)
+     throw ();
+
+
+
+
+
+extern wint_t btowc (int __c) throw ();
+
+
+
+extern int wctob (wint_t __c) throw ();
+
+
+
+extern int mbsinit (const mbstate_t *__ps) throw () __attribute__ ((__pure__));
+
+
+
+extern size_t mbrtowc (wchar_t *__restrict __pwc,
+         const char *__restrict __s, size_t __n,
+         mbstate_t *__restrict __p) throw ();
+
+
+extern size_t wcrtomb (char *__restrict __s, wchar_t __wc,
+         mbstate_t *__restrict __ps) throw ();
+
+
+extern size_t __mbrlen (const char *__restrict __s, size_t __n,
+   mbstate_t *__restrict __ps) throw ();
+extern size_t mbrlen (const char *__restrict __s, size_t __n,
+        mbstate_t *__restrict __ps) throw ();
+extern size_t mbsrtowcs (wchar_t *__restrict __dst,
+    const char **__restrict __src, size_t __len,
+    mbstate_t *__restrict __ps) throw ();
+
+
+
+extern size_t wcsrtombs (char *__restrict __dst,
+    const wchar_t **__restrict __src, size_t __len,
+    mbstate_t *__restrict __ps) throw ();
+
+
+
+
+
+extern size_t mbsnrtowcs (wchar_t *__restrict __dst,
+     const char **__restrict __src, size_t __nmc,
+     size_t __len, mbstate_t *__restrict __ps) throw ();
+
+
+
+extern size_t wcsnrtombs (char *__restrict __dst,
+     const wchar_t **__restrict __src,
+     size_t __nwc, size_t __len,
+     mbstate_t *__restrict __ps) throw ();
+
+
+
+
+
+
+extern int wcwidth (wchar_t __c) throw ();
+
+
+
+extern int wcswidth (const wchar_t *__s, size_t __n) throw ();
+
+
+
+
+
+extern double wcstod (const wchar_t *__restrict __nptr,
+        wchar_t **__restrict __endptr) throw ();
+
+
+
+extern float wcstof (const wchar_t *__restrict __nptr,
+       wchar_t **__restrict __endptr) throw ();
+extern long double wcstold (const wchar_t *__restrict __nptr,
+       wchar_t **__restrict __endptr) throw ();
+
+
+
+
+extern _Float128 wcstof128 (const wchar_t *__restrict __nptr,
+       wchar_t **__restrict __endptr) throw ();
+
+
+
+
+
+extern long int wcstol (const wchar_t *__restrict __nptr,
+   wchar_t **__restrict __endptr, int __base) throw ();
+
+
+
+extern unsigned long int wcstoul (const wchar_t *__restrict __nptr,
+      wchar_t **__restrict __endptr, int __base)
+     throw ();
+
+
+
+
+__extension__
+extern long long int wcstoll (const wchar_t *__restrict __nptr,
+         wchar_t **__restrict __endptr, int __base)
+     throw ();
+
+
+
+__extension__
+extern unsigned long long int wcstoull (const wchar_t *__restrict __nptr,
+     wchar_t **__restrict __endptr,
+     int __base) throw ();
+
+
+
+
+
+__extension__
+extern long long int wcstoq (const wchar_t *__restrict __nptr,
+        wchar_t **__restrict __endptr, int __base)
+     throw ();
+
+
+
+__extension__
+extern unsigned long long int wcstouq (const wchar_t *__restrict __nptr,
+           wchar_t **__restrict __endptr,
+           int __base) throw ();
+
+
+
+
+
+
+extern long int wcstol_l (const wchar_t *__restrict __nptr,
+     wchar_t **__restrict __endptr, int __base,
+     locale_t __loc) throw ();
+
+extern unsigned long int wcstoul_l (const wchar_t *__restrict __nptr,
+        wchar_t **__restrict __endptr,
+        int __base, locale_t __loc) throw ();
+
+__extension__
+extern long long int wcstoll_l (const wchar_t *__restrict __nptr,
+    wchar_t **__restrict __endptr,
+    int __base, locale_t __loc) throw ();
+
+__extension__
+extern unsigned long long int wcstoull_l (const wchar_t *__restrict __nptr,
+       wchar_t **__restrict __endptr,
+       int __base, locale_t __loc)
+     throw ();
+
+extern double wcstod_l (const wchar_t *__restrict __nptr,
+   wchar_t **__restrict __endptr, locale_t __loc)
+     throw ();
+
+extern float wcstof_l (const wchar_t *__restrict __nptr,
+         wchar_t **__restrict __endptr, locale_t __loc)
+     throw ();
+
+extern long double wcstold_l (const wchar_t *__restrict __nptr,
+         wchar_t **__restrict __endptr,
+         locale_t __loc) throw ();
+
+
+extern _Float128 wcstof128_l (const wchar_t *__restrict __nptr,
+         wchar_t **__restrict __endptr,
+         locale_t __loc) throw ();
+
+
+
+
+
+
+
+extern wchar_t *wcpcpy (wchar_t *__restrict __dest,
+   const wchar_t *__restrict __src) throw ();
+
+
+
+extern wchar_t *wcpncpy (wchar_t *__restrict __dest,
+    const wchar_t *__restrict __src, size_t __n)
+     throw ();
+extern __FILE *open_wmemstream (wchar_t **__bufloc, size_t *__sizeloc) throw ();
+
+
+
+
+
+extern int fwide (__FILE *__fp, int __mode) throw ();
+
+
+
+
+
+
+extern int fwprintf (__FILE *__restrict __stream,
+       const wchar_t *__restrict __format, ...)
+                                                           ;
+
+
+
+
+extern int wprintf (const wchar_t *__restrict __format, ...)
+                                                           ;
+
+extern int swprintf (wchar_t *__restrict __s, size_t __n,
+       const wchar_t *__restrict __format, ...)
+     throw () ;
+
+
+
+
+
+extern int vfwprintf (__FILE *__restrict __s,
+        const wchar_t *__restrict __format,
+        __gnuc_va_list __arg)
+                                                           ;
+
+
+
+
+extern int vwprintf (const wchar_t *__restrict __format,
+       __gnuc_va_list __arg)
+                                                           ;
+
+
+extern int vswprintf (wchar_t *__restrict __s, size_t __n,
+        const wchar_t *__restrict __format,
+        __gnuc_va_list __arg)
+     throw () ;
+
+
+
+
+
+
+extern int fwscanf (__FILE *__restrict __stream,
+      const wchar_t *__restrict __format, ...)
+                                                          ;
+
+
+
+
+extern int wscanf (const wchar_t *__restrict __format, ...)
+                                                          ;
+
+extern int swscanf (const wchar_t *__restrict __s,
+      const wchar_t *__restrict __format, ...)
+     throw () ;
+extern int vfwscanf (__FILE *__restrict __s,
+       const wchar_t *__restrict __format,
+       __gnuc_va_list __arg)
+                                                          ;
+
+
+
+
+extern int vwscanf (const wchar_t *__restrict __format,
+      __gnuc_va_list __arg)
+                                                          ;
+
+extern int vswscanf (const wchar_t *__restrict __s,
+       const wchar_t *__restrict __format,
+       __gnuc_va_list __arg)
+     throw () ;
+extern wint_t fgetwc (__FILE *__stream);
+extern wint_t getwc (__FILE *__stream);
+
+
+
+
+
+extern wint_t getwchar (void);
+
+
+
+
+
+
+extern wint_t fputwc (wchar_t __wc, __FILE *__stream);
+extern wint_t putwc (wchar_t __wc, __FILE *__stream);
+
+
+
+
+
+extern wint_t putwchar (wchar_t __wc);
+
+
+
+
+
+
+
+extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
+   __FILE *__restrict __stream);
+
+
+
+
+
+extern int fputws (const wchar_t *__restrict __ws,
+     __FILE *__restrict __stream);
+
+
+
+
+
+
+extern wint_t ungetwc (wint_t __wc, __FILE *__stream);
+extern wint_t getwc_unlocked (__FILE *__stream);
+extern wint_t getwchar_unlocked (void);
+
+
+
+
+
+
+
+extern wint_t fgetwc_unlocked (__FILE *__stream);
+
+
+
+
+
+
+
+extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream);
+extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream);
+extern wint_t putwchar_unlocked (wchar_t __wc);
+extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
+     __FILE *__restrict __stream);
+
+
+
+
+
+
+
+extern int fputws_unlocked (const wchar_t *__restrict __ws,
+       __FILE *__restrict __stream);
+
+
+
+
+
+
+extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
+   const wchar_t *__restrict __format,
+   const struct tm *__restrict __tp) throw ();
+
+
+
+
+extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
+     const wchar_t *__restrict __format,
+     const struct tm *__restrict __tp,
+     locale_t __loc) throw ();
+}
+namespace std
+{
+  using ::mbstate_t;
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  using ::wint_t;
+
+  using ::btowc;
+  using ::fgetwc;
+  using ::fgetws;
+  using ::fputwc;
+  using ::fputws;
+  using ::fwide;
+  using ::fwprintf;
+  using ::fwscanf;
+  using ::getwc;
+  using ::getwchar;
+  using ::mbrlen;
+  using ::mbrtowc;
+  using ::mbsinit;
+  using ::mbsrtowcs;
+  using ::putwc;
+  using ::putwchar;
+
+  using ::swprintf;
+
+  using ::swscanf;
+  using ::ungetwc;
+  using ::vfwprintf;
+
+  using ::vfwscanf;
+
+
+  using ::vswprintf;
+
+
+  using ::vswscanf;
+
+  using ::vwprintf;
+
+  using ::vwscanf;
+
+  using ::wcrtomb;
+  using ::wcscat;
+  using ::wcscmp;
+  using ::wcscoll;
+  using ::wcscpy;
+  using ::wcscspn;
+  using ::wcsftime;
+  using ::wcslen;
+  using ::wcsncat;
+  using ::wcsncmp;
+  using ::wcsncpy;
+  using ::wcsrtombs;
+  using ::wcsspn;
+  using ::wcstod;
+
+  using ::wcstof;
+
+  using ::wcstok;
+  using ::wcstol;
+  using ::wcstoul;
+  using ::wcsxfrm;
+  using ::wctob;
+  using ::wmemcmp;
+  using ::wmemcpy;
+  using ::wmemmove;
+  using ::wmemset;
+  using ::wprintf;
+  using ::wscanf;
+  using ::wcschr;
+  using ::wcspbrk;
+  using ::wcsrchr;
+  using ::wcsstr;
+  using ::wmemchr;
+
+}
+
+
+
+
+
+
+
+namespace __gnu_cxx
+{
+
+
+
+
+
+  using ::wcstold;
+  using ::wcstoll;
+  using ::wcstoull;
+
+}
+
+namespace std
+{
+  using ::__gnu_cxx::wcstold;
+  using ::__gnu_cxx::wcstoll;
+  using ::__gnu_cxx::wcstoull;
+}
+namespace std
+{
+
+  using std::wcstof;
+
+
+  using std::vfwscanf;
+
+
+  using std::vswscanf;
+
+
+  using std::vwscanf;
+
+
+
+  using std::wcstold;
+  using std::wcstoll;
+  using std::wcstoull;
+
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  typedef long streamoff;
+  typedef ptrdiff_t streamsize;
+  template<typename _StateT>
+    class fpos
+    {
+    private:
+      streamoff _M_off;
+      _StateT _M_state;
+
+    public:
+
+
+
+
+      fpos()
+      : _M_off(0), _M_state() { }
+      fpos(streamoff __off)
+      : _M_off(__off), _M_state() { }
+
+
+      operator streamoff() const { return _M_off; }
+
+
+      void
+      state(_StateT __st)
+      { _M_state = __st; }
+
+
+      _StateT
+      state() const
+      { return _M_state; }
+
+
+
+
+
+      fpos&
+      operator+=(streamoff __off)
+      {
+ _M_off += __off;
+ return *this;
+      }
+
+
+
+
+
+      fpos&
+      operator-=(streamoff __off)
+      {
+ _M_off -= __off;
+ return *this;
+      }
+
+
+
+
+
+
+
+      fpos
+      operator+(streamoff __off) const
+      {
+ fpos __pos(*this);
+ __pos += __off;
+ return __pos;
+      }
+
+
+
+
+
+
+
+      fpos
+      operator-(streamoff __off) const
+      {
+ fpos __pos(*this);
+ __pos -= __off;
+ return __pos;
+      }
+
+
+
+
+
+
+      streamoff
+      operator-(const fpos& __other) const
+      { return _M_off - __other._M_off; }
+    };
+
+
+
+
+
+
+  template<typename _StateT>
+    inline bool
+    operator==(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
+    { return streamoff(__lhs) == streamoff(__rhs); }
+
+  template<typename _StateT>
+    inline bool
+    operator!=(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
+    { return streamoff(__lhs) != streamoff(__rhs); }
+
+
+
+
+
+  typedef fpos<mbstate_t> streampos;
+
+  typedef fpos<mbstate_t> wstreampos;
+
+
+
+  typedef fpos<mbstate_t> u16streampos;
+
+  typedef fpos<mbstate_t> u32streampos;
+
+
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  class ios_base;
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT> >
+    class basic_ios;
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT> >
+    class basic_streambuf;
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT> >
+    class basic_istream;
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT> >
+    class basic_ostream;
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT> >
+    class basic_iostream;
+
+
+namespace __cxx11 {
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT>,
+     typename _Alloc = allocator<_CharT> >
+    class basic_stringbuf;
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT>,
+    typename _Alloc = allocator<_CharT> >
+    class basic_istringstream;
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT>,
+    typename _Alloc = allocator<_CharT> >
+    class basic_ostringstream;
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT>,
+    typename _Alloc = allocator<_CharT> >
+    class basic_stringstream;
+
+}
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT> >
+    class basic_filebuf;
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT> >
+    class basic_ifstream;
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT> >
+    class basic_ofstream;
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT> >
+    class basic_fstream;
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT> >
+    class istreambuf_iterator;
+
+  template<typename _CharT, typename _Traits = char_traits<_CharT> >
+    class ostreambuf_iterator;
+
+
+
+  typedef basic_ios<char> ios;
+
+
+  typedef basic_streambuf<char> streambuf;
+
+
+  typedef basic_istream<char> istream;
+
+
+  typedef basic_ostream<char> ostream;
+
+
+  typedef basic_iostream<char> iostream;
+
+
+  typedef basic_stringbuf<char> stringbuf;
+
+
+  typedef basic_istringstream<char> istringstream;
+
+
+  typedef basic_ostringstream<char> ostringstream;
+
+
+  typedef basic_stringstream<char> stringstream;
+
+
+  typedef basic_filebuf<char> filebuf;
+
+
+  typedef basic_ifstream<char> ifstream;
+
+
+  typedef basic_ofstream<char> ofstream;
+
+
+  typedef basic_fstream<char> fstream;
+
+
+
+  typedef basic_ios<wchar_t> wios;
+
+
+  typedef basic_streambuf<wchar_t> wstreambuf;
+
+
+  typedef basic_istream<wchar_t> wistream;
+
+
+  typedef basic_ostream<wchar_t> wostream;
+
+
+  typedef basic_iostream<wchar_t> wiostream;
+
+
+  typedef basic_stringbuf<wchar_t> wstringbuf;
+
+
+  typedef basic_istringstream<wchar_t> wistringstream;
+
+
+  typedef basic_ostringstream<wchar_t> wostringstream;
+
+
+  typedef basic_stringstream<wchar_t> wstringstream;
+
+
+  typedef basic_filebuf<wchar_t> wfilebuf;
+
+
+  typedef basic_ifstream<wchar_t> wifstream;
+
+
+  typedef basic_ofstream<wchar_t> wofstream;
+
+
+  typedef basic_fstream<wchar_t> wfstream;
+
+
+
+
+}
+
+       
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+  void
+  __throw_bad_exception(void) __attribute__((__noreturn__));
+
+
+  void
+  __throw_bad_alloc(void) __attribute__((__noreturn__));
+
+
+  void
+  __throw_bad_cast(void) __attribute__((__noreturn__));
+
+  void
+  __throw_bad_typeid(void) __attribute__((__noreturn__));
+
+
+  void
+  __throw_logic_error(const char*) __attribute__((__noreturn__));
+
+  void
+  __throw_domain_error(const char*) __attribute__((__noreturn__));
+
+  void
+  __throw_invalid_argument(const char*) __attribute__((__noreturn__));
+
+  void
+  __throw_length_error(const char*) __attribute__((__noreturn__));
+
+  void
+  __throw_out_of_range(const char*) __attribute__((__noreturn__));
+
+  void
+  __throw_out_of_range_fmt(const char*, ...) __attribute__((__noreturn__))
+    __attribute__((__format__(__gnu_printf__, 1, 2)));
+
+  void
+  __throw_runtime_error(const char*) __attribute__((__noreturn__));
+
+  void
+  __throw_range_error(const char*) __attribute__((__noreturn__));
+
+  void
+  __throw_overflow_error(const char*) __attribute__((__noreturn__));
+
+  void
+  __throw_underflow_error(const char*) __attribute__((__noreturn__));
+
+
+  void
+  __throw_ios_failure(const char*) __attribute__((__noreturn__));
+
+  void
+  __throw_system_error(int) __attribute__((__noreturn__));
+
+  void
+  __throw_future_error(int) __attribute__((__noreturn__));
+
+
+  void
+  __throw_bad_function_call() __attribute__((__noreturn__));
+
+
+}
+
+
+       
+
+
+
+
+namespace __gnu_cxx __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _Value>
+    struct __numeric_traits_integer
+    {
+
+      static const _Value __min = (((_Value)(-1) < 0) ? (_Value)1 << (sizeof(_Value) * 8 - ((_Value)(-1) < 0)) : (_Value)0);
+      static const _Value __max = (((_Value)(-1) < 0) ? (((((_Value)1 << ((sizeof(_Value) * 8 - ((_Value)(-1) < 0)) - 1)) - 1) << 1) + 1) : ~(_Value)0);
+
+
+
+      static const bool __is_signed = ((_Value)(-1) < 0);
+      static const int __digits = (sizeof(_Value) * 8 - ((_Value)(-1) < 0));
+    };
+
+  template<typename _Value>
+    const _Value __numeric_traits_integer<_Value>::__min;
+
+  template<typename _Value>
+    const _Value __numeric_traits_integer<_Value>::__max;
+
+  template<typename _Value>
+    const bool __numeric_traits_integer<_Value>::__is_signed;
+
+  template<typename _Value>
+    const int __numeric_traits_integer<_Value>::__digits;
+  template<typename _Value>
+    struct __numeric_traits_floating
+    {
+
+      static const int __max_digits10 = (2 + (std::__are_same<_Value, float>::__value ? 24 : std::__are_same<_Value, double>::__value ? 53 : 64) * 643L / 2136);
+
+
+      static const bool __is_signed = true;
+      static const int __digits10 = (std::__are_same<_Value, float>::__value ? 6 : std::__are_same<_Value, double>::__value ? 15 : 18);
+      static const int __max_exponent10 = (std::__are_same<_Value, float>::__value ? 38 : std::__are_same<_Value, double>::__value ? 308 : 4932);
+    };
+
+  template<typename _Value>
+    const int __numeric_traits_floating<_Value>::__max_digits10;
+
+  template<typename _Value>
+    const bool __numeric_traits_floating<_Value>::__is_signed;
+
+  template<typename _Value>
+    const int __numeric_traits_floating<_Value>::__digits10;
+
+  template<typename _Value>
+    const int __numeric_traits_floating<_Value>::__max_exponent10;
+
+  template<typename _Value>
+    struct __numeric_traits
+    : public __conditional_type<std::__is_integer<_Value>::__value,
+    __numeric_traits_integer<_Value>,
+    __numeric_traits_floating<_Value> >::__type
+    { };
+
+
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  struct piecewise_construct_t { explicit piecewise_construct_t() = default; };
+
+
+  constexpr piecewise_construct_t piecewise_construct =
+    piecewise_construct_t();
+
+
+  template<typename...>
+    class tuple;
+
+  template<std::size_t...>
+    struct _Index_tuple;
+
+
+
+
+
+
+  template <bool, typename _T1, typename _T2>
+    struct _PCC
+    {
+      template <typename _U1, typename _U2>
+      static constexpr bool _ConstructiblePair()
+      {
+ return __and_<is_constructible<_T1, const _U1&>,
+        is_constructible<_T2, const _U2&>>::value;
+      }
+
+      template <typename _U1, typename _U2>
+      static constexpr bool _ImplicitlyConvertiblePair()
+      {
+ return __and_<is_convertible<const _U1&, _T1>,
+        is_convertible<const _U2&, _T2>>::value;
+      }
+
+      template <typename _U1, typename _U2>
+      static constexpr bool _MoveConstructiblePair()
+      {
+ return __and_<is_constructible<_T1, _U1&&>,
+        is_constructible<_T2, _U2&&>>::value;
+      }
+
+      template <typename _U1, typename _U2>
+      static constexpr bool _ImplicitlyMoveConvertiblePair()
+      {
+ return __and_<is_convertible<_U1&&, _T1>,
+        is_convertible<_U2&&, _T2>>::value;
+      }
+
+      template <bool __implicit, typename _U1, typename _U2>
+      static constexpr bool _CopyMovePair()
+      {
+ using __do_converts = __and_<is_convertible<const _U1&, _T1>,
+      is_convertible<_U2&&, _T2>>;
+ using __converts = typename conditional<__implicit,
+           __do_converts,
+           __not_<__do_converts>>::type;
+ return __and_<is_constructible<_T1, const _U1&>,
+        is_constructible<_T2, _U2&&>,
+        __converts
+        >::value;
+      }
+
+      template <bool __implicit, typename _U1, typename _U2>
+      static constexpr bool _MoveCopyPair()
+      {
+ using __do_converts = __and_<is_convertible<_U1&&, _T1>,
+      is_convertible<const _U2&, _T2>>;
+ using __converts = typename conditional<__implicit,
+           __do_converts,
+           __not_<__do_converts>>::type;
+ return __and_<is_constructible<_T1, _U1&&>,
+        is_constructible<_T2, const _U2&&>,
+        __converts
+        >::value;
+      }
+  };
+
+  template <typename _T1, typename _T2>
+    struct _PCC<false, _T1, _T2>
+    {
+      template <typename _U1, typename _U2>
+      static constexpr bool _ConstructiblePair()
+      {
+ return false;
+      }
+
+      template <typename _U1, typename _U2>
+      static constexpr bool _ImplicitlyConvertiblePair()
+      {
+ return false;
+      }
+
+      template <typename _U1, typename _U2>
+      static constexpr bool _MoveConstructiblePair()
+      {
+ return false;
+      }
+
+      template <typename _U1, typename _U2>
+      static constexpr bool _ImplicitlyMoveConvertiblePair()
+      {
+ return false;
+      }
+  };
+
+
+
+
+  struct __nonesuch_no_braces : std::__nonesuch {
+    explicit __nonesuch_no_braces(const __nonesuch&) = delete;
+  };
+  template<typename _T1, typename _T2>
+    struct pair
+    {
+      typedef _T1 first_type;
+      typedef _T2 second_type;
+
+      _T1 first;
+      _T2 second;
+
+
+
+
+
+
+      template <typename _U1 = _T1,
+                typename _U2 = _T2,
+                typename enable_if<__and_<
+                                     __is_implicitly_default_constructible<_U1>,
+                                     __is_implicitly_default_constructible<_U2>>
+                                   ::value, bool>::type = true>
+
+      constexpr pair()
+      : first(), second() { }
+
+
+      template <typename _U1 = _T1,
+                typename _U2 = _T2,
+                typename enable_if<__and_<
+                       is_default_constructible<_U1>,
+                       is_default_constructible<_U2>,
+                       __not_<
+                         __and_<__is_implicitly_default_constructible<_U1>,
+                                __is_implicitly_default_constructible<_U2>>>>
+                                   ::value, bool>::type = false>
+      explicit constexpr pair()
+      : first(), second() { }
+      using _PCCP = _PCC<true, _T1, _T2>;
+
+      template<typename _U1 = _T1, typename _U2=_T2, typename
+        enable_if<_PCCP::template
+      _ConstructiblePair<_U1, _U2>()
+                  && _PCCP::template
+      _ImplicitlyConvertiblePair<_U1, _U2>(),
+                         bool>::type=true>
+      constexpr pair(const _T1& __a, const _T2& __b)
+      : first(__a), second(__b) { }
+
+       template<typename _U1 = _T1, typename _U2=_T2, typename
+  enable_if<_PCCP::template
+       _ConstructiblePair<_U1, _U2>()
+                   && !_PCCP::template
+       _ImplicitlyConvertiblePair<_U1, _U2>(),
+                         bool>::type=false>
+      explicit constexpr pair(const _T1& __a, const _T2& __b)
+      : first(__a), second(__b) { }
+      template <typename _U1, typename _U2>
+        using _PCCFP = _PCC<!is_same<_T1, _U1>::value
+       || !is_same<_T2, _U2>::value,
+       _T1, _T2>;
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_PCCFP<_U1, _U2>::template
+      _ConstructiblePair<_U1, _U2>()
+                  && _PCCFP<_U1, _U2>::template
+      _ImplicitlyConvertiblePair<_U1, _U2>(),
+     bool>::type=true>
+        constexpr pair(const pair<_U1, _U2>& __p)
+        : first(__p.first), second(__p.second) { }
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_PCCFP<_U1, _U2>::template
+      _ConstructiblePair<_U1, _U2>()
+    && !_PCCFP<_U1, _U2>::template
+      _ImplicitlyConvertiblePair<_U1, _U2>(),
+                         bool>::type=false>
+ explicit constexpr pair(const pair<_U1, _U2>& __p)
+ : first(__p.first), second(__p.second) { }
+
+      constexpr pair(const pair&) = default;
+      constexpr pair(pair&&) = default;
+
+
+      template<typename _U1, typename
+        enable_if<_PCCP::template
+      _MoveCopyPair<true, _U1, _T2>(),
+                         bool>::type=true>
+       constexpr pair(_U1&& __x, const _T2& __y)
+       : first(std::forward<_U1>(__x)), second(__y) { }
+
+      template<typename _U1, typename
+        enable_if<_PCCP::template
+      _MoveCopyPair<false, _U1, _T2>(),
+                         bool>::type=false>
+       explicit constexpr pair(_U1&& __x, const _T2& __y)
+       : first(std::forward<_U1>(__x)), second(__y) { }
+
+      template<typename _U2, typename
+        enable_if<_PCCP::template
+      _CopyMovePair<true, _T1, _U2>(),
+                         bool>::type=true>
+       constexpr pair(const _T1& __x, _U2&& __y)
+       : first(__x), second(std::forward<_U2>(__y)) { }
+
+      template<typename _U2, typename
+        enable_if<_PCCP::template
+      _CopyMovePair<false, _T1, _U2>(),
+                         bool>::type=false>
+       explicit pair(const _T1& __x, _U2&& __y)
+       : first(__x), second(std::forward<_U2>(__y)) { }
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_PCCP::template
+      _MoveConstructiblePair<_U1, _U2>()
+     && _PCCP::template
+      _ImplicitlyMoveConvertiblePair<_U1, _U2>(),
+                         bool>::type=true>
+ constexpr pair(_U1&& __x, _U2&& __y)
+ : first(std::forward<_U1>(__x)), second(std::forward<_U2>(__y)) { }
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_PCCP::template
+      _MoveConstructiblePair<_U1, _U2>()
+     && !_PCCP::template
+      _ImplicitlyMoveConvertiblePair<_U1, _U2>(),
+                         bool>::type=false>
+ explicit constexpr pair(_U1&& __x, _U2&& __y)
+ : first(std::forward<_U1>(__x)), second(std::forward<_U2>(__y)) { }
+
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_PCCFP<_U1, _U2>::template
+      _MoveConstructiblePair<_U1, _U2>()
+     && _PCCFP<_U1, _U2>::template
+      _ImplicitlyMoveConvertiblePair<_U1, _U2>(),
+                         bool>::type=true>
+ constexpr pair(pair<_U1, _U2>&& __p)
+ : first(std::forward<_U1>(__p.first)),
+   second(std::forward<_U2>(__p.second)) { }
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_PCCFP<_U1, _U2>::template
+      _MoveConstructiblePair<_U1, _U2>()
+     && !_PCCFP<_U1, _U2>::template
+      _ImplicitlyMoveConvertiblePair<_U1, _U2>(),
+                         bool>::type=false>
+ explicit constexpr pair(pair<_U1, _U2>&& __p)
+ : first(std::forward<_U1>(__p.first)),
+   second(std::forward<_U2>(__p.second)) { }
+
+      template<typename... _Args1, typename... _Args2>
+        pair(piecewise_construct_t, tuple<_Args1...>, tuple<_Args2...>);
+
+      pair&
+      operator=(typename conditional<
+  __and_<is_copy_assignable<_T1>,
+         is_copy_assignable<_T2>>::value,
+  const pair&, const __nonesuch_no_braces&>::type __p)
+      {
+ first = __p.first;
+ second = __p.second;
+ return *this;
+      }
+
+      pair&
+      operator=(typename conditional<
+  __not_<__and_<is_copy_assignable<_T1>,
+                is_copy_assignable<_T2>>>::value,
+  const pair&, const __nonesuch_no_braces&>::type __p) = delete;
+
+      pair&
+      operator=(typename conditional<
+  __and_<is_move_assignable<_T1>,
+         is_move_assignable<_T2>>::value,
+  pair&&, __nonesuch_no_braces&&>::type __p)
+      noexcept(__and_<is_nothrow_move_assignable<_T1>,
+               is_nothrow_move_assignable<_T2>>::value)
+      {
+ first = std::forward<first_type>(__p.first);
+ second = std::forward<second_type>(__p.second);
+ return *this;
+      }
+
+      template<typename _U1, typename _U2>
+      typename enable_if<__and_<is_assignable<_T1&, const _U1&>,
+    is_assignable<_T2&, const _U2&>>::value,
+    pair&>::type
+ operator=(const pair<_U1, _U2>& __p)
+ {
+   first = __p.first;
+   second = __p.second;
+   return *this;
+ }
+
+      template<typename _U1, typename _U2>
+      typename enable_if<__and_<is_assignable<_T1&, _U1&&>,
+    is_assignable<_T2&, _U2&&>>::value,
+    pair&>::type
+ operator=(pair<_U1, _U2>&& __p)
+ {
+   first = std::forward<_U1>(__p.first);
+   second = std::forward<_U2>(__p.second);
+   return *this;
+ }
+
+      void
+      swap(pair& __p)
+      noexcept(__and_<__is_nothrow_swappable<_T1>,
+                      __is_nothrow_swappable<_T2>>::value)
+      {
+ using std::swap;
+ swap(first, __p.first);
+ swap(second, __p.second);
+      }
+
+    private:
+      template<typename... _Args1, std::size_t... _Indexes1,
+               typename... _Args2, std::size_t... _Indexes2>
+        pair(tuple<_Args1...>&, tuple<_Args2...>&,
+             _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>);
+
+    };
+
+
+
+
+
+
+  template<typename _T1, typename _T2>
+    inline constexpr bool
+    operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
+    { return __x.first == __y.first && __x.second == __y.second; }
+
+
+  template<typename _T1, typename _T2>
+    inline constexpr bool
+    operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
+    { return __x.first < __y.first
+      || (!(__y.first < __x.first) && __x.second < __y.second); }
+
+
+  template<typename _T1, typename _T2>
+    inline constexpr bool
+    operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
+    { return !(__x == __y); }
+
+
+  template<typename _T1, typename _T2>
+    inline constexpr bool
+    operator>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
+    { return __y < __x; }
+
+
+  template<typename _T1, typename _T2>
+    inline constexpr bool
+    operator<=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
+    { return !(__y < __x); }
+
+
+  template<typename _T1, typename _T2>
+    inline constexpr bool
+    operator>=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
+    { return !(__x < __y); }
+
+
+
+
+
+  template<typename _T1, typename _T2>
+    inline
+
+
+    typename enable_if<__and_<__is_swappable<_T1>,
+                              __is_swappable<_T2>>::value>::type
+
+
+
+    swap(pair<_T1, _T2>& __x, pair<_T1, _T2>& __y)
+    noexcept(noexcept(__x.swap(__y)))
+    { __x.swap(__y); }
+
+
+  template<typename _T1, typename _T2>
+    typename enable_if<!__and_<__is_swappable<_T1>,
+          __is_swappable<_T2>>::value>::type
+    swap(pair<_T1, _T2>&, pair<_T1, _T2>&) = delete;
+  template<typename _T1, typename _T2>
+    constexpr pair<typename __decay_and_strip<_T1>::__type,
+                   typename __decay_and_strip<_T2>::__type>
+    make_pair(_T1&& __x, _T2&& __y)
+    {
+      typedef typename __decay_and_strip<_T1>::__type __ds_type1;
+      typedef typename __decay_and_strip<_T2>::__type __ds_type2;
+      typedef pair<__ds_type1, __ds_type2> __pair_type;
+      return __pair_type(std::forward<_T1>(__x), std::forward<_T2>(__y));
+    }
+
+}
+
+
+
+
+namespace std
+{
+  namespace __debug { }
+}
+
+
+
+
+namespace __gnu_debug
+{
+  using namespace std::__debug;
+}
+
+namespace __gnu_cxx
+{
+namespace __ops
+{
+  struct _Iter_less_iter
+  {
+    template<typename _Iterator1, typename _Iterator2>
+      constexpr
+      bool
+      operator()(_Iterator1 __it1, _Iterator2 __it2) const
+      { return *__it1 < *__it2; }
+  };
+
+  constexpr
+  inline _Iter_less_iter
+  __iter_less_iter()
+  { return _Iter_less_iter(); }
+
+  struct _Iter_less_val
+  {
+
+    constexpr _Iter_less_val() = default;
+
+
+
+
+    explicit
+    _Iter_less_val(_Iter_less_iter) { }
+
+    template<typename _Iterator, typename _Value>
+      bool
+      operator()(_Iterator __it, _Value& __val) const
+      { return *__it < __val; }
+  };
+
+  inline _Iter_less_val
+  __iter_less_val()
+  { return _Iter_less_val(); }
+
+  inline _Iter_less_val
+  __iter_comp_val(_Iter_less_iter)
+  { return _Iter_less_val(); }
+
+  struct _Val_less_iter
+  {
+
+    constexpr _Val_less_iter() = default;
+
+
+
+
+    explicit
+    _Val_less_iter(_Iter_less_iter) { }
+
+    template<typename _Value, typename _Iterator>
+      bool
+      operator()(_Value& __val, _Iterator __it) const
+      { return __val < *__it; }
+  };
+
+  inline _Val_less_iter
+  __val_less_iter()
+  { return _Val_less_iter(); }
+
+  inline _Val_less_iter
+  __val_comp_iter(_Iter_less_iter)
+  { return _Val_less_iter(); }
+
+  struct _Iter_equal_to_iter
+  {
+    template<typename _Iterator1, typename _Iterator2>
+      bool
+      operator()(_Iterator1 __it1, _Iterator2 __it2) const
+      { return *__it1 == *__it2; }
+  };
+
+  inline _Iter_equal_to_iter
+  __iter_equal_to_iter()
+  { return _Iter_equal_to_iter(); }
+
+  struct _Iter_equal_to_val
+  {
+    template<typename _Iterator, typename _Value>
+      bool
+      operator()(_Iterator __it, _Value& __val) const
+      { return *__it == __val; }
+  };
+
+  inline _Iter_equal_to_val
+  __iter_equal_to_val()
+  { return _Iter_equal_to_val(); }
+
+  inline _Iter_equal_to_val
+  __iter_comp_val(_Iter_equal_to_iter)
+  { return _Iter_equal_to_val(); }
+
+  template<typename _Compare>
+    struct _Iter_comp_iter
+    {
+      _Compare _M_comp;
+
+      explicit constexpr
+      _Iter_comp_iter(_Compare __comp)
+ : _M_comp(std::move(__comp))
+      { }
+
+      template<typename _Iterator1, typename _Iterator2>
+        constexpr
+        bool
+        operator()(_Iterator1 __it1, _Iterator2 __it2)
+        { return bool(_M_comp(*__it1, *__it2)); }
+    };
+
+  template<typename _Compare>
+    constexpr
+    inline _Iter_comp_iter<_Compare>
+    __iter_comp_iter(_Compare __comp)
+    { return _Iter_comp_iter<_Compare>(std::move(__comp)); }
+
+  template<typename _Compare>
+    struct _Iter_comp_val
+    {
+      _Compare _M_comp;
+
+      explicit
+      _Iter_comp_val(_Compare __comp)
+ : _M_comp(std::move(__comp))
+      { }
+
+      explicit
+      _Iter_comp_val(const _Iter_comp_iter<_Compare>& __comp)
+ : _M_comp(__comp._M_comp)
+      { }
+
+
+      explicit
+      _Iter_comp_val(_Iter_comp_iter<_Compare>&& __comp)
+ : _M_comp(std::move(__comp._M_comp))
+      { }
+
+
+      template<typename _Iterator, typename _Value>
+ bool
+ operator()(_Iterator __it, _Value& __val)
+ { return bool(_M_comp(*__it, __val)); }
+    };
+
+  template<typename _Compare>
+   inline _Iter_comp_val<_Compare>
+    __iter_comp_val(_Compare __comp)
+    { return _Iter_comp_val<_Compare>(std::move(__comp)); }
+
+  template<typename _Compare>
+    inline _Iter_comp_val<_Compare>
+    __iter_comp_val(_Iter_comp_iter<_Compare> __comp)
+    { return _Iter_comp_val<_Compare>(std::move(__comp)); }
+
+  template<typename _Compare>
+    struct _Val_comp_iter
+    {
+      _Compare _M_comp;
+
+      explicit
+      _Val_comp_iter(_Compare __comp)
+ : _M_comp(std::move(__comp))
+      { }
+
+      explicit
+      _Val_comp_iter(const _Iter_comp_iter<_Compare>& __comp)
+ : _M_comp(__comp._M_comp)
+      { }
+
+
+      explicit
+      _Val_comp_iter(_Iter_comp_iter<_Compare>&& __comp)
+ : _M_comp(std::move(__comp._M_comp))
+      { }
+
+
+      template<typename _Value, typename _Iterator>
+ bool
+ operator()(_Value& __val, _Iterator __it)
+ { return bool(_M_comp(__val, *__it)); }
+    };
+
+  template<typename _Compare>
+    inline _Val_comp_iter<_Compare>
+    __val_comp_iter(_Compare __comp)
+    { return _Val_comp_iter<_Compare>(std::move(__comp)); }
+
+  template<typename _Compare>
+    inline _Val_comp_iter<_Compare>
+    __val_comp_iter(_Iter_comp_iter<_Compare> __comp)
+    { return _Val_comp_iter<_Compare>(std::move(__comp)); }
+
+  template<typename _Value>
+    struct _Iter_equals_val
+    {
+      _Value& _M_value;
+
+      explicit
+      _Iter_equals_val(_Value& __value)
+ : _M_value(__value)
+      { }
+
+      template<typename _Iterator>
+ bool
+ operator()(_Iterator __it)
+ { return *__it == _M_value; }
+    };
+
+  template<typename _Value>
+    inline _Iter_equals_val<_Value>
+    __iter_equals_val(_Value& __val)
+    { return _Iter_equals_val<_Value>(__val); }
+
+  template<typename _Iterator1>
+    struct _Iter_equals_iter
+    {
+      _Iterator1 _M_it1;
+
+      explicit
+      _Iter_equals_iter(_Iterator1 __it1)
+ : _M_it1(__it1)
+      { }
+
+      template<typename _Iterator2>
+ bool
+ operator()(_Iterator2 __it2)
+ { return *__it2 == *_M_it1; }
+    };
+
+  template<typename _Iterator>
+    inline _Iter_equals_iter<_Iterator>
+    __iter_comp_iter(_Iter_equal_to_iter, _Iterator __it)
+    { return _Iter_equals_iter<_Iterator>(__it); }
+
+  template<typename _Predicate>
+    struct _Iter_pred
+    {
+      _Predicate _M_pred;
+
+      explicit
+      _Iter_pred(_Predicate __pred)
+ : _M_pred(std::move(__pred))
+      { }
+
+      template<typename _Iterator>
+ bool
+ operator()(_Iterator __it)
+ { return bool(_M_pred(*__it)); }
+    };
+
+  template<typename _Predicate>
+    inline _Iter_pred<_Predicate>
+    __pred_iter(_Predicate __pred)
+    { return _Iter_pred<_Predicate>(std::move(__pred)); }
+
+  template<typename _Compare, typename _Value>
+    struct _Iter_comp_to_val
+    {
+      _Compare _M_comp;
+      _Value& _M_value;
+
+      _Iter_comp_to_val(_Compare __comp, _Value& __value)
+ : _M_comp(std::move(__comp)), _M_value(__value)
+      { }
+
+      template<typename _Iterator>
+ bool
+ operator()(_Iterator __it)
+ { return bool(_M_comp(*__it, _M_value)); }
+    };
+
+  template<typename _Compare, typename _Value>
+    _Iter_comp_to_val<_Compare, _Value>
+    __iter_comp_val(_Compare __comp, _Value &__val)
+    {
+      return _Iter_comp_to_val<_Compare, _Value>(std::move(__comp), __val);
+    }
+
+  template<typename _Compare, typename _Iterator1>
+    struct _Iter_comp_to_iter
+    {
+      _Compare _M_comp;
+      _Iterator1 _M_it1;
+
+      _Iter_comp_to_iter(_Compare __comp, _Iterator1 __it1)
+ : _M_comp(std::move(__comp)), _M_it1(__it1)
+      { }
+
+      template<typename _Iterator2>
+ bool
+ operator()(_Iterator2 __it2)
+ { return bool(_M_comp(*__it2, *_M_it1)); }
+    };
+
+  template<typename _Compare, typename _Iterator>
+    inline _Iter_comp_to_iter<_Compare, _Iterator>
+    __iter_comp_iter(_Iter_comp_iter<_Compare> __comp, _Iterator __it)
+    {
+      return _Iter_comp_to_iter<_Compare, _Iterator>(
+   std::move(__comp._M_comp), __it);
+    }
+
+  template<typename _Predicate>
+    struct _Iter_negate
+    {
+      _Predicate _M_pred;
+
+      explicit
+      _Iter_negate(_Predicate __pred)
+ : _M_pred(std::move(__pred))
+      { }
+
+      template<typename _Iterator>
+ bool
+ operator()(_Iterator __it)
+ { return !bool(_M_pred(*__it)); }
+    };
+
+  template<typename _Predicate>
+    inline _Iter_negate<_Predicate>
+    __negate(_Iter_pred<_Predicate> __pred)
+    { return _Iter_negate<_Predicate>(std::move(__pred._M_pred)); }
+
+}
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _ForwardIterator1, typename _ForwardIterator2>
+    inline void
+    iter_swap(_ForwardIterator1 __a, _ForwardIterator2 __b)
+    {
+
+     
+
+     
+      swap(*__a, *__b);
+
+    }
+  template<typename _ForwardIterator1, typename _ForwardIterator2>
+    _ForwardIterator2
+    swap_ranges(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+  _ForwardIterator2 __first2)
+    {
+
+     
+
+     
+
+      ;
+
+      for (; __first1 != __last1; ++__first1, (void)++__first2)
+ std::iter_swap(__first1, __first2);
+      return __first2;
+    }
+  template<typename _Tp>
+    constexpr
+    inline const _Tp&
+    min(const _Tp& __a, const _Tp& __b)
+    {
+
+     
+
+      if (__b < __a)
+ return __b;
+      return __a;
+    }
+  template<typename _Tp>
+    constexpr
+    inline const _Tp&
+    max(const _Tp& __a, const _Tp& __b)
+    {
+
+     
+
+      if (__a < __b)
+ return __b;
+      return __a;
+    }
+  template<typename _Tp, typename _Compare>
+    constexpr
+    inline const _Tp&
+    min(const _Tp& __a, const _Tp& __b, _Compare __comp)
+    {
+
+      if (__comp(__b, __a))
+ return __b;
+      return __a;
+    }
+  template<typename _Tp, typename _Compare>
+    constexpr
+    inline const _Tp&
+    max(const _Tp& __a, const _Tp& __b, _Compare __comp)
+    {
+
+      if (__comp(__a, __b))
+ return __b;
+      return __a;
+    }
+
+
+
+  template<typename _Iterator>
+    inline _Iterator
+    __niter_base(_Iterator __it)
+    { return __it; }
+
+
+
+
+
+
+
+  template<bool, bool, typename>
+    struct __copy_move
+    {
+      template<typename _II, typename _OI>
+ static _OI
+ __copy_m(_II __first, _II __last, _OI __result)
+ {
+   for (; __first != __last; ++__result, (void)++__first)
+     *__result = *__first;
+   return __result;
+ }
+    };
+
+
+  template<typename _Category>
+    struct __copy_move<true, false, _Category>
+    {
+      template<typename _II, typename _OI>
+ static _OI
+ __copy_m(_II __first, _II __last, _OI __result)
+ {
+   for (; __first != __last; ++__result, (void)++__first)
+     *__result = std::move(*__first);
+   return __result;
+ }
+    };
+
+
+  template<>
+    struct __copy_move<false, false, random_access_iterator_tag>
+    {
+      template<typename _II, typename _OI>
+ static _OI
+ __copy_m(_II __first, _II __last, _OI __result)
+ {
+   typedef typename iterator_traits<_II>::difference_type _Distance;
+   for(_Distance __n = __last - __first; __n > 0; --__n)
+     {
+       *__result = *__first;
+       ++__first;
+       ++__result;
+     }
+   return __result;
+ }
+    };
+
+
+  template<>
+    struct __copy_move<true, false, random_access_iterator_tag>
+    {
+      template<typename _II, typename _OI>
+ static _OI
+ __copy_m(_II __first, _II __last, _OI __result)
+ {
+   typedef typename iterator_traits<_II>::difference_type _Distance;
+   for(_Distance __n = __last - __first; __n > 0; --__n)
+     {
+       *__result = std::move(*__first);
+       ++__first;
+       ++__result;
+     }
+   return __result;
+ }
+    };
+
+
+  template<bool _IsMove>
+    struct __copy_move<_IsMove, true, random_access_iterator_tag>
+    {
+      template<typename _Tp>
+ static _Tp*
+ __copy_m(const _Tp* __first, const _Tp* __last, _Tp* __result)
+ {
+
+   using __assignable = conditional<_IsMove,
+        is_move_assignable<_Tp>,
+        is_copy_assignable<_Tp>>;
+
+   static_assert( __assignable::type::value, "type is not assignable" );
+
+   const ptrdiff_t _Num = __last - __first;
+   if (_Num)
+     __builtin_memmove(__result, __first, sizeof(_Tp) * _Num);
+   return __result + _Num;
+ }
+    };
+
+  template<bool _IsMove, typename _II, typename _OI>
+    inline _OI
+    __copy_move_a(_II __first, _II __last, _OI __result)
+    {
+      typedef typename iterator_traits<_II>::value_type _ValueTypeI;
+      typedef typename iterator_traits<_OI>::value_type _ValueTypeO;
+      typedef typename iterator_traits<_II>::iterator_category _Category;
+      const bool __simple = (__is_trivial(_ValueTypeI)
+        && __is_pointer<_II>::__value
+        && __is_pointer<_OI>::__value
+        && __are_same<_ValueTypeI, _ValueTypeO>::__value);
+
+      return std::__copy_move<_IsMove, __simple,
+         _Category>::__copy_m(__first, __last, __result);
+    }
+
+
+
+  template<typename _CharT>
+    struct char_traits;
+
+  template<typename _CharT, typename _Traits>
+    class istreambuf_iterator;
+
+  template<typename _CharT, typename _Traits>
+    class ostreambuf_iterator;
+
+  template<bool _IsMove, typename _CharT>
+    typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
+      ostreambuf_iterator<_CharT, char_traits<_CharT> > >::__type
+    __copy_move_a2(_CharT*, _CharT*,
+     ostreambuf_iterator<_CharT, char_traits<_CharT> >);
+
+  template<bool _IsMove, typename _CharT>
+    typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
+      ostreambuf_iterator<_CharT, char_traits<_CharT> > >::__type
+    __copy_move_a2(const _CharT*, const _CharT*,
+     ostreambuf_iterator<_CharT, char_traits<_CharT> >);
+
+  template<bool _IsMove, typename _CharT>
+    typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
+        _CharT*>::__type
+    __copy_move_a2(istreambuf_iterator<_CharT, char_traits<_CharT> >,
+     istreambuf_iterator<_CharT, char_traits<_CharT> >, _CharT*);
+
+  template<bool _IsMove, typename _II, typename _OI>
+    inline _OI
+    __copy_move_a2(_II __first, _II __last, _OI __result)
+    {
+      return _OI(std::__copy_move_a<_IsMove>(std::__niter_base(__first),
+          std::__niter_base(__last),
+          std::__niter_base(__result)));
+    }
+  template<typename _II, typename _OI>
+    inline _OI
+    copy(_II __first, _II __last, _OI __result)
+    {
+
+     
+     
+
+      ;
+
+      return (std::__copy_move_a2<__is_move_iterator<_II>::__value>
+       (std::__miter_base(__first), std::__miter_base(__last),
+        __result));
+    }
+  template<typename _II, typename _OI>
+    inline _OI
+    move(_II __first, _II __last, _OI __result)
+    {
+
+     
+     
+
+      ;
+
+      return std::__copy_move_a2<true>(std::__miter_base(__first),
+           std::__miter_base(__last), __result);
+    }
+
+
+
+
+
+
+  template<bool, bool, typename>
+    struct __copy_move_backward
+    {
+      template<typename _BI1, typename _BI2>
+ static _BI2
+ __copy_move_b(_BI1 __first, _BI1 __last, _BI2 __result)
+ {
+   while (__first != __last)
+     *--__result = *--__last;
+   return __result;
+ }
+    };
+
+
+  template<typename _Category>
+    struct __copy_move_backward<true, false, _Category>
+    {
+      template<typename _BI1, typename _BI2>
+ static _BI2
+ __copy_move_b(_BI1 __first, _BI1 __last, _BI2 __result)
+ {
+   while (__first != __last)
+     *--__result = std::move(*--__last);
+   return __result;
+ }
+    };
+
+
+  template<>
+    struct __copy_move_backward<false, false, random_access_iterator_tag>
+    {
+      template<typename _BI1, typename _BI2>
+ static _BI2
+ __copy_move_b(_BI1 __first, _BI1 __last, _BI2 __result)
+ {
+   typename iterator_traits<_BI1>::difference_type __n;
+   for (__n = __last - __first; __n > 0; --__n)
+     *--__result = *--__last;
+   return __result;
+ }
+    };
+
+
+  template<>
+    struct __copy_move_backward<true, false, random_access_iterator_tag>
+    {
+      template<typename _BI1, typename _BI2>
+ static _BI2
+ __copy_move_b(_BI1 __first, _BI1 __last, _BI2 __result)
+ {
+   typename iterator_traits<_BI1>::difference_type __n;
+   for (__n = __last - __first; __n > 0; --__n)
+     *--__result = std::move(*--__last);
+   return __result;
+ }
+    };
+
+
+  template<bool _IsMove>
+    struct __copy_move_backward<_IsMove, true, random_access_iterator_tag>
+    {
+      template<typename _Tp>
+ static _Tp*
+ __copy_move_b(const _Tp* __first, const _Tp* __last, _Tp* __result)
+ {
+
+   using __assignable = conditional<_IsMove,
+        is_move_assignable<_Tp>,
+        is_copy_assignable<_Tp>>;
+
+   static_assert( __assignable::type::value, "type is not assignable" );
+
+   const ptrdiff_t _Num = __last - __first;
+   if (_Num)
+     __builtin_memmove(__result - _Num, __first, sizeof(_Tp) * _Num);
+   return __result - _Num;
+ }
+    };
+
+  template<bool _IsMove, typename _BI1, typename _BI2>
+    inline _BI2
+    __copy_move_backward_a(_BI1 __first, _BI1 __last, _BI2 __result)
+    {
+      typedef typename iterator_traits<_BI1>::value_type _ValueType1;
+      typedef typename iterator_traits<_BI2>::value_type _ValueType2;
+      typedef typename iterator_traits<_BI1>::iterator_category _Category;
+      const bool __simple = (__is_trivial(_ValueType1)
+        && __is_pointer<_BI1>::__value
+        && __is_pointer<_BI2>::__value
+        && __are_same<_ValueType1, _ValueType2>::__value);
+
+      return std::__copy_move_backward<_IsMove, __simple,
+           _Category>::__copy_move_b(__first,
+         __last,
+         __result);
+    }
+
+  template<bool _IsMove, typename _BI1, typename _BI2>
+    inline _BI2
+    __copy_move_backward_a2(_BI1 __first, _BI1 __last, _BI2 __result)
+    {
+      return _BI2(std::__copy_move_backward_a<_IsMove>
+    (std::__niter_base(__first), std::__niter_base(__last),
+     std::__niter_base(__result)));
+    }
+  template<typename _BI1, typename _BI2>
+    inline _BI2
+    copy_backward(_BI1 __first, _BI1 __last, _BI2 __result)
+    {
+
+     
+     
+     
+
+
+      ;
+
+      return (std::__copy_move_backward_a2<__is_move_iterator<_BI1>::__value>
+       (std::__miter_base(__first), std::__miter_base(__last),
+        __result));
+    }
+  template<typename _BI1, typename _BI2>
+    inline _BI2
+    move_backward(_BI1 __first, _BI1 __last, _BI2 __result)
+    {
+
+     
+     
+     
+
+
+      ;
+
+      return std::__copy_move_backward_a2<true>(std::__miter_base(__first),
+      std::__miter_base(__last),
+      __result);
+    }
+
+
+
+
+
+
+  template<typename _ForwardIterator, typename _Tp>
+    inline typename
+    __gnu_cxx::__enable_if<!__is_scalar<_Tp>::__value, void>::__type
+    __fill_a(_ForwardIterator __first, _ForwardIterator __last,
+       const _Tp& __value)
+    {
+      for (; __first != __last; ++__first)
+ *__first = __value;
+    }
+
+  template<typename _ForwardIterator, typename _Tp>
+    inline typename
+    __gnu_cxx::__enable_if<__is_scalar<_Tp>::__value, void>::__type
+    __fill_a(_ForwardIterator __first, _ForwardIterator __last,
+      const _Tp& __value)
+    {
+      const _Tp __tmp = __value;
+      for (; __first != __last; ++__first)
+ *__first = __tmp;
+    }
+
+
+  template<typename _Tp>
+    inline typename
+    __gnu_cxx::__enable_if<__is_byte<_Tp>::__value, void>::__type
+    __fill_a(_Tp* __first, _Tp* __last, const _Tp& __c)
+    {
+      const _Tp __tmp = __c;
+      if (const size_t __len = __last - __first)
+ __builtin_memset(__first, static_cast<unsigned char>(__tmp), __len);
+    }
+  template<typename _ForwardIterator, typename _Tp>
+    inline void
+    fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value)
+    {
+
+     
+
+      ;
+
+      std::__fill_a(std::__niter_base(__first), std::__niter_base(__last),
+      __value);
+    }
+
+  template<typename _OutputIterator, typename _Size, typename _Tp>
+    inline typename
+    __gnu_cxx::__enable_if<!__is_scalar<_Tp>::__value, _OutputIterator>::__type
+    __fill_n_a(_OutputIterator __first, _Size __n, const _Tp& __value)
+    {
+      for (__decltype(__n + 0) __niter = __n;
+    __niter > 0; --__niter, (void) ++__first)
+ *__first = __value;
+      return __first;
+    }
+
+  template<typename _OutputIterator, typename _Size, typename _Tp>
+    inline typename
+    __gnu_cxx::__enable_if<__is_scalar<_Tp>::__value, _OutputIterator>::__type
+    __fill_n_a(_OutputIterator __first, _Size __n, const _Tp& __value)
+    {
+      const _Tp __tmp = __value;
+      for (__decltype(__n + 0) __niter = __n;
+    __niter > 0; --__niter, (void) ++__first)
+ *__first = __tmp;
+      return __first;
+    }
+
+  template<typename _Size, typename _Tp>
+    inline typename
+    __gnu_cxx::__enable_if<__is_byte<_Tp>::__value, _Tp*>::__type
+    __fill_n_a(_Tp* __first, _Size __n, const _Tp& __c)
+    {
+      std::__fill_a(__first, __first + __n, __c);
+      return __first + __n;
+    }
+  template<typename _OI, typename _Size, typename _Tp>
+    inline _OI
+    fill_n(_OI __first, _Size __n, const _Tp& __value)
+    {
+
+     
+
+      return _OI(std::__fill_n_a(std::__niter_base(__first), __n, __value));
+    }
+
+  template<bool _BoolType>
+    struct __equal
+    {
+      template<typename _II1, typename _II2>
+ static bool
+ equal(_II1 __first1, _II1 __last1, _II2 __first2)
+ {
+   for (; __first1 != __last1; ++__first1, (void) ++__first2)
+     if (!(*__first1 == *__first2))
+       return false;
+   return true;
+ }
+    };
+
+  template<>
+    struct __equal<true>
+    {
+      template<typename _Tp>
+ static bool
+ equal(const _Tp* __first1, const _Tp* __last1, const _Tp* __first2)
+ {
+   if (const size_t __len = (__last1 - __first1))
+     return !__builtin_memcmp(__first1, __first2, sizeof(_Tp) * __len);
+   return true;
+ }
+    };
+
+  template<typename _II1, typename _II2>
+    inline bool
+    __equal_aux(_II1 __first1, _II1 __last1, _II2 __first2)
+    {
+      typedef typename iterator_traits<_II1>::value_type _ValueType1;
+      typedef typename iterator_traits<_II2>::value_type _ValueType2;
+      const bool __simple = ((__is_integer<_ValueType1>::__value
+         || __is_pointer<_ValueType1>::__value)
+        && __is_pointer<_II1>::__value
+        && __is_pointer<_II2>::__value
+        && __are_same<_ValueType1, _ValueType2>::__value);
+
+      return std::__equal<__simple>::equal(__first1, __last1, __first2);
+    }
+
+  template<typename, typename>
+    struct __lc_rai
+    {
+      template<typename _II1, typename _II2>
+ static _II1
+ __newlast1(_II1, _II1 __last1, _II2, _II2)
+ { return __last1; }
+
+      template<typename _II>
+ static bool
+ __cnd2(_II __first, _II __last)
+ { return __first != __last; }
+    };
+
+  template<>
+    struct __lc_rai<random_access_iterator_tag, random_access_iterator_tag>
+    {
+      template<typename _RAI1, typename _RAI2>
+ static _RAI1
+ __newlast1(_RAI1 __first1, _RAI1 __last1,
+     _RAI2 __first2, _RAI2 __last2)
+ {
+   const typename iterator_traits<_RAI1>::difference_type
+     __diff1 = __last1 - __first1;
+   const typename iterator_traits<_RAI2>::difference_type
+     __diff2 = __last2 - __first2;
+   return __diff2 < __diff1 ? __first1 + __diff2 : __last1;
+ }
+
+      template<typename _RAI>
+ static bool
+ __cnd2(_RAI, _RAI)
+ { return true; }
+    };
+
+  template<typename _II1, typename _II2, typename _Compare>
+    bool
+    __lexicographical_compare_impl(_II1 __first1, _II1 __last1,
+       _II2 __first2, _II2 __last2,
+       _Compare __comp)
+    {
+      typedef typename iterator_traits<_II1>::iterator_category _Category1;
+      typedef typename iterator_traits<_II2>::iterator_category _Category2;
+      typedef std::__lc_rai<_Category1, _Category2> __rai_type;
+
+      __last1 = __rai_type::__newlast1(__first1, __last1, __first2, __last2);
+      for (; __first1 != __last1 && __rai_type::__cnd2(__first2, __last2);
+    ++__first1, (void)++__first2)
+ {
+   if (__comp(__first1, __first2))
+     return true;
+   if (__comp(__first2, __first1))
+     return false;
+ }
+      return __first1 == __last1 && __first2 != __last2;
+    }
+
+  template<bool _BoolType>
+    struct __lexicographical_compare
+    {
+      template<typename _II1, typename _II2>
+ static bool __lc(_II1, _II1, _II2, _II2);
+    };
+
+  template<bool _BoolType>
+    template<typename _II1, typename _II2>
+      bool
+      __lexicographical_compare<_BoolType>::
+      __lc(_II1 __first1, _II1 __last1, _II2 __first2, _II2 __last2)
+      {
+ return std::__lexicographical_compare_impl(__first1, __last1,
+         __first2, __last2,
+     __gnu_cxx::__ops::__iter_less_iter());
+      }
+
+  template<>
+    struct __lexicographical_compare<true>
+    {
+      template<typename _Tp, typename _Up>
+ static bool
+ __lc(const _Tp* __first1, const _Tp* __last1,
+      const _Up* __first2, const _Up* __last2)
+ {
+   const size_t __len1 = __last1 - __first1;
+   const size_t __len2 = __last2 - __first2;
+   if (const size_t __len = std::min(__len1, __len2))
+     if (int __result = __builtin_memcmp(__first1, __first2, __len))
+       return __result < 0;
+   return __len1 < __len2;
+ }
+    };
+
+  template<typename _II1, typename _II2>
+    inline bool
+    __lexicographical_compare_aux(_II1 __first1, _II1 __last1,
+      _II2 __first2, _II2 __last2)
+    {
+      typedef typename iterator_traits<_II1>::value_type _ValueType1;
+      typedef typename iterator_traits<_II2>::value_type _ValueType2;
+      const bool __simple =
+ (__is_byte<_ValueType1>::__value && __is_byte<_ValueType2>::__value
+  && !__gnu_cxx::__numeric_traits<_ValueType1>::__is_signed
+  && !__gnu_cxx::__numeric_traits<_ValueType2>::__is_signed
+  && __is_pointer<_II1>::__value
+  && __is_pointer<_II2>::__value);
+
+      return std::__lexicographical_compare<__simple>::__lc(__first1, __last1,
+           __first2, __last2);
+    }
+
+  template<typename _ForwardIterator, typename _Tp, typename _Compare>
+    _ForwardIterator
+    __lower_bound(_ForwardIterator __first, _ForwardIterator __last,
+    const _Tp& __val, _Compare __comp)
+    {
+      typedef typename iterator_traits<_ForwardIterator>::difference_type
+ _DistanceType;
+
+      _DistanceType __len = std::distance(__first, __last);
+
+      while (__len > 0)
+ {
+   _DistanceType __half = __len >> 1;
+   _ForwardIterator __middle = __first;
+   std::advance(__middle, __half);
+   if (__comp(__middle, __val))
+     {
+       __first = __middle;
+       ++__first;
+       __len = __len - __half - 1;
+     }
+   else
+     __len = __half;
+ }
+      return __first;
+    }
+  template<typename _ForwardIterator, typename _Tp>
+    inline _ForwardIterator
+    lower_bound(_ForwardIterator __first, _ForwardIterator __last,
+  const _Tp& __val)
+    {
+
+     
+     
+
+      ;
+
+      return std::__lower_bound(__first, __last, __val,
+    __gnu_cxx::__ops::__iter_less_val());
+    }
+
+
+
+  inline constexpr int
+  __lg(int __n)
+  { return sizeof(int) * 8 - 1 - __builtin_clz(__n); }
+
+  inline constexpr unsigned
+  __lg(unsigned __n)
+  { return sizeof(int) * 8 - 1 - __builtin_clz(__n); }
+
+  inline constexpr long
+  __lg(long __n)
+  { return sizeof(long) * 8 - 1 - __builtin_clzl(__n); }
+
+  inline constexpr unsigned long
+  __lg(unsigned long __n)
+  { return sizeof(long) * 8 - 1 - __builtin_clzl(__n); }
+
+  inline constexpr long long
+  __lg(long long __n)
+  { return sizeof(long long) * 8 - 1 - __builtin_clzll(__n); }
+
+  inline constexpr unsigned long long
+  __lg(unsigned long long __n)
+  { return sizeof(long long) * 8 - 1 - __builtin_clzll(__n); }
+
+
+  template<typename _II1, typename _II2>
+    inline bool
+    equal(_II1 __first1, _II1 __last1, _II2 __first2)
+    {
+
+     
+     
+     
+
+
+      ;
+
+      return std::__equal_aux(std::__niter_base(__first1),
+         std::__niter_base(__last1),
+         std::__niter_base(__first2));
+    }
+  template<typename _IIter1, typename _IIter2, typename _BinaryPredicate>
+    inline bool
+    equal(_IIter1 __first1, _IIter1 __last1,
+   _IIter2 __first2, _BinaryPredicate __binary_pred)
+    {
+
+     
+     
+      ;
+
+      for (; __first1 != __last1; ++__first1, (void)++__first2)
+ if (!bool(__binary_pred(*__first1, *__first2)))
+   return false;
+      return true;
+    }
+
+
+
+  template<typename _II1, typename _II2>
+    inline bool
+    __equal4(_II1 __first1, _II1 __last1, _II2 __first2, _II2 __last2)
+    {
+      using _RATag = random_access_iterator_tag;
+      using _Cat1 = typename iterator_traits<_II1>::iterator_category;
+      using _Cat2 = typename iterator_traits<_II2>::iterator_category;
+      using _RAIters = __and_<is_same<_Cat1, _RATag>, is_same<_Cat2, _RATag>>;
+      if (_RAIters())
+ {
+   auto __d1 = std::distance(__first1, __last1);
+   auto __d2 = std::distance(__first2, __last2);
+   if (__d1 != __d2)
+     return false;
+   return std::equal(__first1, __last1, __first2);
+ }
+
+      for (; __first1 != __last1 && __first2 != __last2;
+   ++__first1, (void)++__first2)
+ if (!(*__first1 == *__first2))
+   return false;
+      return __first1 == __last1 && __first2 == __last2;
+    }
+
+
+  template<typename _II1, typename _II2, typename _BinaryPredicate>
+    inline bool
+    __equal4(_II1 __first1, _II1 __last1, _II2 __first2, _II2 __last2,
+      _BinaryPredicate __binary_pred)
+    {
+      using _RATag = random_access_iterator_tag;
+      using _Cat1 = typename iterator_traits<_II1>::iterator_category;
+      using _Cat2 = typename iterator_traits<_II2>::iterator_category;
+      using _RAIters = __and_<is_same<_Cat1, _RATag>, is_same<_Cat2, _RATag>>;
+      if (_RAIters())
+ {
+   auto __d1 = std::distance(__first1, __last1);
+   auto __d2 = std::distance(__first2, __last2);
+   if (__d1 != __d2)
+     return false;
+   return std::equal(__first1, __last1, __first2,
+           __binary_pred);
+ }
+
+      for (; __first1 != __last1 && __first2 != __last2;
+   ++__first1, (void)++__first2)
+ if (!bool(__binary_pred(*__first1, *__first2)))
+   return false;
+      return __first1 == __last1 && __first2 == __last2;
+    }
+  template<typename _II1, typename _II2>
+    inline bool
+    equal(_II1 __first1, _II1 __last1, _II2 __first2, _II2 __last2)
+    {
+
+     
+     
+     
+
+
+      ;
+      ;
+
+      return std::__equal4(__first1, __last1, __first2, __last2);
+    }
+  template<typename _IIter1, typename _IIter2, typename _BinaryPredicate>
+    inline bool
+    equal(_IIter1 __first1, _IIter1 __last1,
+   _IIter2 __first2, _IIter2 __last2, _BinaryPredicate __binary_pred)
+    {
+
+     
+     
+      ;
+      ;
+
+      return std::__equal4(__first1, __last1, __first2, __last2,
+          __binary_pred);
+    }
+  template<typename _II1, typename _II2>
+    inline bool
+    lexicographical_compare(_II1 __first1, _II1 __last1,
+       _II2 __first2, _II2 __last2)
+    {
+
+
+
+
+
+     
+     
+     
+     
+      ;
+      ;
+
+      return std::__lexicographical_compare_aux(std::__niter_base(__first1),
+      std::__niter_base(__last1),
+      std::__niter_base(__first2),
+      std::__niter_base(__last2));
+    }
+  template<typename _II1, typename _II2, typename _Compare>
+    inline bool
+    lexicographical_compare(_II1 __first1, _II1 __last1,
+       _II2 __first2, _II2 __last2, _Compare __comp)
+    {
+
+     
+     
+      ;
+      ;
+
+      return std::__lexicographical_compare_impl
+ (__first1, __last1, __first2, __last2,
+  __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _BinaryPredicate>
+    pair<_InputIterator1, _InputIterator2>
+    __mismatch(_InputIterator1 __first1, _InputIterator1 __last1,
+        _InputIterator2 __first2, _BinaryPredicate __binary_pred)
+    {
+      while (__first1 != __last1 && __binary_pred(__first1, __first2))
+ {
+   ++__first1;
+   ++__first2;
+ }
+      return pair<_InputIterator1, _InputIterator2>(__first1, __first2);
+    }
+  template<typename _InputIterator1, typename _InputIterator2>
+    inline pair<_InputIterator1, _InputIterator2>
+    mismatch(_InputIterator1 __first1, _InputIterator1 __last1,
+      _InputIterator2 __first2)
+    {
+
+     
+     
+     
+
+
+      ;
+
+      return std::__mismatch(__first1, __last1, __first2,
+        __gnu_cxx::__ops::__iter_equal_to_iter());
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _BinaryPredicate>
+    inline pair<_InputIterator1, _InputIterator2>
+    mismatch(_InputIterator1 __first1, _InputIterator1 __last1,
+      _InputIterator2 __first2, _BinaryPredicate __binary_pred)
+    {
+
+     
+     
+      ;
+
+      return std::__mismatch(__first1, __last1, __first2,
+ __gnu_cxx::__ops::__iter_comp_iter(__binary_pred));
+    }
+
+
+
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _BinaryPredicate>
+    pair<_InputIterator1, _InputIterator2>
+    __mismatch(_InputIterator1 __first1, _InputIterator1 __last1,
+        _InputIterator2 __first2, _InputIterator2 __last2,
+        _BinaryPredicate __binary_pred)
+    {
+      while (__first1 != __last1 && __first2 != __last2
+      && __binary_pred(__first1, __first2))
+ {
+   ++__first1;
+   ++__first2;
+ }
+      return pair<_InputIterator1, _InputIterator2>(__first1, __first2);
+    }
+  template<typename _InputIterator1, typename _InputIterator2>
+    inline pair<_InputIterator1, _InputIterator2>
+    mismatch(_InputIterator1 __first1, _InputIterator1 __last1,
+      _InputIterator2 __first2, _InputIterator2 __last2)
+    {
+
+     
+     
+     
+
+
+      ;
+      ;
+
+      return std::__mismatch(__first1, __last1, __first2, __last2,
+        __gnu_cxx::__ops::__iter_equal_to_iter());
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _BinaryPredicate>
+    inline pair<_InputIterator1, _InputIterator2>
+    mismatch(_InputIterator1 __first1, _InputIterator1 __last1,
+      _InputIterator2 __first2, _InputIterator2 __last2,
+      _BinaryPredicate __binary_pred)
+    {
+
+     
+     
+      ;
+      ;
+
+      return std::__mismatch(__first1, __last1, __first2, __last2,
+        __gnu_cxx::__ops::__iter_comp_iter(__binary_pred));
+    }
+
+
+
+
+}
+
+       
+
+
+
+
+
+namespace __gnu_cxx __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _CharT>
+    struct _Char_types
+    {
+      typedef unsigned long int_type;
+      typedef std::streampos pos_type;
+      typedef std::streamoff off_type;
+      typedef std::mbstate_t state_type;
+    };
+  template<typename _CharT>
+    struct char_traits
+    {
+      typedef _CharT char_type;
+      typedef typename _Char_types<_CharT>::int_type int_type;
+      typedef typename _Char_types<_CharT>::pos_type pos_type;
+      typedef typename _Char_types<_CharT>::off_type off_type;
+      typedef typename _Char_types<_CharT>::state_type state_type;
+
+      static constexpr void
+      assign(char_type& __c1, const char_type& __c2)
+      { __c1 = __c2; }
+
+      static constexpr bool
+      eq(const char_type& __c1, const char_type& __c2)
+      { return __c1 == __c2; }
+
+      static constexpr bool
+      lt(const char_type& __c1, const char_type& __c2)
+      { return __c1 < __c2; }
+
+      static constexpr int
+      compare(const char_type* __s1, const char_type* __s2, std::size_t __n);
+
+      static constexpr std::size_t
+      length(const char_type* __s);
+
+      static constexpr const char_type*
+      find(const char_type* __s, std::size_t __n, const char_type& __a);
+
+      static char_type*
+      move(char_type* __s1, const char_type* __s2, std::size_t __n);
+
+      static char_type*
+      copy(char_type* __s1, const char_type* __s2, std::size_t __n);
+
+      static char_type*
+      assign(char_type* __s, std::size_t __n, char_type __a);
+
+      static constexpr char_type
+      to_char_type(const int_type& __c)
+      { return static_cast<char_type>(__c); }
+
+      static constexpr int_type
+      to_int_type(const char_type& __c)
+      { return static_cast<int_type>(__c); }
+
+      static constexpr bool
+      eq_int_type(const int_type& __c1, const int_type& __c2)
+      { return __c1 == __c2; }
+
+      static constexpr int_type
+      eof()
+      { return static_cast<int_type>(-1); }
+
+      static constexpr int_type
+      not_eof(const int_type& __c)
+      { return !eq_int_type(__c, eof()) ? __c : to_int_type(char_type()); }
+    };
+
+
+
+  template<typename _CharT>
+    constexpr int
+    char_traits<_CharT>::
+    compare(const char_type* __s1, const char_type* __s2, std::size_t __n)
+    {
+      for (std::size_t __i = 0; __i < __n; ++__i)
+ if (lt(__s1[__i], __s2[__i]))
+   return -1;
+ else if (lt(__s2[__i], __s1[__i]))
+   return 1;
+      return 0;
+    }
+
+  template<typename _CharT>
+    constexpr std::size_t
+    char_traits<_CharT>::
+    length(const char_type* __p)
+    {
+      std::size_t __i = 0;
+      while (!eq(__p[__i], char_type()))
+        ++__i;
+      return __i;
+    }
+
+  template<typename _CharT>
+    constexpr const typename char_traits<_CharT>::char_type*
+    char_traits<_CharT>::
+    find(const char_type* __s, std::size_t __n, const char_type& __a)
+    {
+      for (std::size_t __i = 0; __i < __n; ++__i)
+        if (eq(__s[__i], __a))
+          return __s + __i;
+      return 0;
+    }
+
+  template<typename _CharT>
+    typename char_traits<_CharT>::char_type*
+    char_traits<_CharT>::
+    move(char_type* __s1, const char_type* __s2, std::size_t __n)
+    {
+      return static_cast<_CharT*>(__builtin_memmove(__s1, __s2,
+          __n * sizeof(char_type)));
+    }
+
+  template<typename _CharT>
+    typename char_traits<_CharT>::char_type*
+    char_traits<_CharT>::
+    copy(char_type* __s1, const char_type* __s2, std::size_t __n)
+    {
+
+      std::copy(__s2, __s2 + __n, __s1);
+      return __s1;
+    }
+
+  template<typename _CharT>
+    typename char_traits<_CharT>::char_type*
+    char_traits<_CharT>::
+    assign(char_type* __s, std::size_t __n, char_type __a)
+    {
+
+      std::fill_n(__s, __n, __a);
+      return __s;
+    }
+
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<class _CharT>
+    struct char_traits : public __gnu_cxx::char_traits<_CharT>
+    { };
+
+
+
+  template<>
+    struct char_traits<char>
+    {
+      typedef char char_type;
+      typedef int int_type;
+      typedef streampos pos_type;
+      typedef streamoff off_type;
+      typedef mbstate_t state_type;
+
+      static void
+      assign(char_type& __c1, const char_type& __c2) noexcept
+      { __c1 = __c2; }
+
+      static constexpr bool
+      eq(const char_type& __c1, const char_type& __c2) noexcept
+      { return __c1 == __c2; }
+
+      static constexpr bool
+      lt(const char_type& __c1, const char_type& __c2) noexcept
+      {
+
+ return (static_cast<unsigned char>(__c1)
+  < static_cast<unsigned char>(__c2));
+      }
+
+      static int
+      compare(const char_type* __s1, const char_type* __s2, size_t __n)
+      {
+
+
+
+
+
+
+ if (__n == 0)
+   return 0;
+ return __builtin_memcmp(__s1, __s2, __n);
+      }
+
+      static size_t
+      length(const char_type* __s)
+      {
+
+
+
+
+ return __builtin_strlen(__s);
+      }
+
+      static const char_type*
+      find(const char_type* __s, size_t __n, const char_type& __a)
+      {
+
+
+
+
+
+
+ if (__n == 0)
+   return 0;
+ return static_cast<const char_type*>(__builtin_memchr(__s, __a, __n));
+      }
+
+      static char_type*
+      move(char_type* __s1, const char_type* __s2, size_t __n)
+      {
+ if (__n == 0)
+   return __s1;
+ return static_cast<char_type*>(__builtin_memmove(__s1, __s2, __n));
+      }
+
+      static char_type*
+      copy(char_type* __s1, const char_type* __s2, size_t __n)
+      {
+ if (__n == 0)
+   return __s1;
+ return static_cast<char_type*>(__builtin_memcpy(__s1, __s2, __n));
+      }
+
+      static char_type*
+      assign(char_type* __s, size_t __n, char_type __a)
+      {
+ if (__n == 0)
+   return __s;
+ return static_cast<char_type*>(__builtin_memset(__s, __a, __n));
+      }
+
+      static constexpr char_type
+      to_char_type(const int_type& __c) noexcept
+      { return static_cast<char_type>(__c); }
+
+
+
+      static constexpr int_type
+      to_int_type(const char_type& __c) noexcept
+      { return static_cast<int_type>(static_cast<unsigned char>(__c)); }
+
+      static constexpr bool
+      eq_int_type(const int_type& __c1, const int_type& __c2) noexcept
+      { return __c1 == __c2; }
+
+      static constexpr int_type
+      eof() noexcept
+      { return static_cast<int_type>(-1); }
+
+      static constexpr int_type
+      not_eof(const int_type& __c) noexcept
+      { return (__c == eof()) ? 0 : __c; }
+  };
+
+
+
+
+  template<>
+    struct char_traits<wchar_t>
+    {
+      typedef wchar_t char_type;
+      typedef wint_t int_type;
+      typedef streamoff off_type;
+      typedef wstreampos pos_type;
+      typedef mbstate_t state_type;
+
+      static void
+      assign(char_type& __c1, const char_type& __c2) noexcept
+      { __c1 = __c2; }
+
+      static constexpr bool
+      eq(const char_type& __c1, const char_type& __c2) noexcept
+      { return __c1 == __c2; }
+
+      static constexpr bool
+      lt(const char_type& __c1, const char_type& __c2) noexcept
+      { return __c1 < __c2; }
+
+      static int
+      compare(const char_type* __s1, const char_type* __s2, size_t __n)
+      {
+
+
+
+
+
+
+ if (__n == 0)
+   return 0;
+ else
+   return wmemcmp(__s1, __s2, __n);
+      }
+
+      static size_t
+      length(const char_type* __s)
+      {
+
+
+
+
+
+   return wcslen(__s);
+      }
+
+      static const char_type*
+      find(const char_type* __s, size_t __n, const char_type& __a)
+      {
+
+
+
+
+
+
+ if (__n == 0)
+   return 0;
+ else
+   return wmemchr(__s, __a, __n);
+      }
+
+      static char_type*
+      move(char_type* __s1, const char_type* __s2, size_t __n)
+      {
+ if (__n == 0)
+   return __s1;
+ return wmemmove(__s1, __s2, __n);
+      }
+
+      static char_type*
+      copy(char_type* __s1, const char_type* __s2, size_t __n)
+      {
+ if (__n == 0)
+   return __s1;
+ return wmemcpy(__s1, __s2, __n);
+      }
+
+      static char_type*
+      assign(char_type* __s, size_t __n, char_type __a)
+      {
+ if (__n == 0)
+   return __s;
+ return wmemset(__s, __a, __n);
+      }
+
+      static constexpr char_type
+      to_char_type(const int_type& __c) noexcept
+      { return char_type(__c); }
+
+      static constexpr int_type
+      to_int_type(const char_type& __c) noexcept
+      { return int_type(__c); }
+
+      static constexpr bool
+      eq_int_type(const int_type& __c1, const int_type& __c2) noexcept
+      { return __c1 == __c2; }
+
+      static constexpr int_type
+      eof() noexcept
+      { return static_cast<int_type>((0xffffffffu)); }
+
+      static constexpr int_type
+      not_eof(const int_type& __c) noexcept
+      { return eq_int_type(__c, eof()) ? 0 : __c; }
+  };
+
+
+
+}
+
+
+
+
+       
+namespace std
+{
+  using ::int8_t;
+  using ::int16_t;
+  using ::int32_t;
+  using ::int64_t;
+
+  using ::int_fast8_t;
+  using ::int_fast16_t;
+  using ::int_fast32_t;
+  using ::int_fast64_t;
+
+  using ::int_least8_t;
+  using ::int_least16_t;
+  using ::int_least32_t;
+  using ::int_least64_t;
+
+  using ::intmax_t;
+  using ::intptr_t;
+
+  using ::uint8_t;
+  using ::uint16_t;
+  using ::uint32_t;
+  using ::uint64_t;
+
+  using ::uint_fast8_t;
+  using ::uint_fast16_t;
+  using ::uint_fast32_t;
+  using ::uint_fast64_t;
+
+  using ::uint_least8_t;
+  using ::uint_least16_t;
+  using ::uint_least32_t;
+  using ::uint_least64_t;
+
+  using ::uintmax_t;
+  using ::uintptr_t;
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  template<>
+    struct char_traits<char16_t>
+    {
+      typedef char16_t char_type;
+      typedef uint_least16_t int_type;
+      typedef streamoff off_type;
+      typedef u16streampos pos_type;
+      typedef mbstate_t state_type;
+
+      static void
+      assign(char_type& __c1, const char_type& __c2) noexcept
+      { __c1 = __c2; }
+
+      static constexpr bool
+      eq(const char_type& __c1, const char_type& __c2) noexcept
+      { return __c1 == __c2; }
+
+      static constexpr bool
+      lt(const char_type& __c1, const char_type& __c2) noexcept
+      { return __c1 < __c2; }
+
+      static int
+      compare(const char_type* __s1, const char_type* __s2, size_t __n)
+      {
+ for (size_t __i = 0; __i < __n; ++__i)
+   if (lt(__s1[__i], __s2[__i]))
+     return -1;
+   else if (lt(__s2[__i], __s1[__i]))
+     return 1;
+ return 0;
+      }
+
+      static size_t
+      length(const char_type* __s)
+      {
+ size_t __i = 0;
+ while (!eq(__s[__i], char_type()))
+   ++__i;
+ return __i;
+      }
+
+      static const char_type*
+      find(const char_type* __s, size_t __n, const char_type& __a)
+      {
+ for (size_t __i = 0; __i < __n; ++__i)
+   if (eq(__s[__i], __a))
+     return __s + __i;
+ return 0;
+      }
+
+      static char_type*
+      move(char_type* __s1, const char_type* __s2, size_t __n)
+      {
+ if (__n == 0)
+   return __s1;
+ return (static_cast<char_type*>
+  (__builtin_memmove(__s1, __s2, __n * sizeof(char_type))));
+      }
+
+      static char_type*
+      copy(char_type* __s1, const char_type* __s2, size_t __n)
+      {
+ if (__n == 0)
+   return __s1;
+ return (static_cast<char_type*>
+  (__builtin_memcpy(__s1, __s2, __n * sizeof(char_type))));
+      }
+
+      static char_type*
+      assign(char_type* __s, size_t __n, char_type __a)
+      {
+ for (size_t __i = 0; __i < __n; ++__i)
+   assign(__s[__i], __a);
+ return __s;
+      }
+
+      static constexpr char_type
+      to_char_type(const int_type& __c) noexcept
+      { return char_type(__c); }
+
+      static constexpr int_type
+      to_int_type(const char_type& __c) noexcept
+      { return __c == eof() ? int_type(0xfffd) : int_type(__c); }
+
+      static constexpr bool
+      eq_int_type(const int_type& __c1, const int_type& __c2) noexcept
+      { return __c1 == __c2; }
+
+      static constexpr int_type
+      eof() noexcept
+      { return static_cast<int_type>(-1); }
+
+      static constexpr int_type
+      not_eof(const int_type& __c) noexcept
+      { return eq_int_type(__c, eof()) ? 0 : __c; }
+    };
+
+  template<>
+    struct char_traits<char32_t>
+    {
+      typedef char32_t char_type;
+      typedef uint_least32_t int_type;
+      typedef streamoff off_type;
+      typedef u32streampos pos_type;
+      typedef mbstate_t state_type;
+
+      static void
+      assign(char_type& __c1, const char_type& __c2) noexcept
+      { __c1 = __c2; }
+
+      static constexpr bool
+      eq(const char_type& __c1, const char_type& __c2) noexcept
+      { return __c1 == __c2; }
+
+      static constexpr bool
+      lt(const char_type& __c1, const char_type& __c2) noexcept
+      { return __c1 < __c2; }
+
+      static int
+      compare(const char_type* __s1, const char_type* __s2, size_t __n)
+      {
+ for (size_t __i = 0; __i < __n; ++__i)
+   if (lt(__s1[__i], __s2[__i]))
+     return -1;
+   else if (lt(__s2[__i], __s1[__i]))
+     return 1;
+ return 0;
+      }
+
+      static size_t
+      length(const char_type* __s)
+      {
+ size_t __i = 0;
+ while (!eq(__s[__i], char_type()))
+   ++__i;
+ return __i;
+      }
+
+      static const char_type*
+      find(const char_type* __s, size_t __n, const char_type& __a)
+      {
+ for (size_t __i = 0; __i < __n; ++__i)
+   if (eq(__s[__i], __a))
+     return __s + __i;
+ return 0;
+      }
+
+      static char_type*
+      move(char_type* __s1, const char_type* __s2, size_t __n)
+      {
+ if (__n == 0)
+   return __s1;
+ return (static_cast<char_type*>
+  (__builtin_memmove(__s1, __s2, __n * sizeof(char_type))));
+      }
+
+      static char_type*
+      copy(char_type* __s1, const char_type* __s2, size_t __n)
+      {
+ if (__n == 0)
+   return __s1;
+ return (static_cast<char_type*>
+  (__builtin_memcpy(__s1, __s2, __n * sizeof(char_type))));
+      }
+
+      static char_type*
+      assign(char_type* __s, size_t __n, char_type __a)
+      {
+ for (size_t __i = 0; __i < __n; ++__i)
+   assign(__s[__i], __a);
+ return __s;
+      }
+
+      static constexpr char_type
+      to_char_type(const int_type& __c) noexcept
+      { return char_type(__c); }
+
+      static constexpr int_type
+      to_int_type(const char_type& __c) noexcept
+      { return int_type(__c); }
+
+      static constexpr bool
+      eq_int_type(const int_type& __c1, const int_type& __c2) noexcept
+      { return __c1 == __c2; }
+
+      static constexpr int_type
+      eof() noexcept
+      { return static_cast<int_type>(-1); }
+
+      static constexpr int_type
+      not_eof(const int_type& __c) noexcept
+      { return eq_int_type(__c, eof()) ? 0 : __c; }
+    };
+
+
+}
+       
+
+
+       
+
+       
+
+
+
+extern "C" {
+struct lconv
+{
+
+
+  char *decimal_point;
+  char *thousands_sep;
+
+
+
+
+
+  char *grouping;
+
+
+
+
+
+  char *int_curr_symbol;
+  char *currency_symbol;
+  char *mon_decimal_point;
+  char *mon_thousands_sep;
+  char *mon_grouping;
+  char *positive_sign;
+  char *negative_sign;
+  char int_frac_digits;
+  char frac_digits;
+
+  char p_cs_precedes;
+
+  char p_sep_by_space;
+
+  char n_cs_precedes;
+
+  char n_sep_by_space;
+
+
+
+
+
+
+  char p_sign_posn;
+  char n_sign_posn;
+
+
+  char int_p_cs_precedes;
+
+  char int_p_sep_by_space;
+
+  char int_n_cs_precedes;
+
+  char int_n_sep_by_space;
+
+
+
+
+
+
+  char int_p_sign_posn;
+  char int_n_sign_posn;
+};
+
+
+
+extern char *setlocale (int __category, const char *__locale) throw ();
+
+
+extern struct lconv *localeconv (void) throw ();
+extern locale_t newlocale (int __category_mask, const char *__locale,
+      locale_t __base) throw ();
+extern locale_t duplocale (locale_t __dataset) throw ();
+
+
+
+extern void freelocale (locale_t __dataset) throw ();
+
+
+
+
+
+
+extern locale_t uselocale (locale_t __dataset) throw ();
+
+
+
+
+
+
+
+}
+namespace std
+{
+  using ::lconv;
+  using ::setlocale;
+  using ::localeconv;
+}
+
+
+
+
+
+
+namespace __gnu_cxx __attribute__ ((__visibility__ ("default")))
+{
+
+
+  extern "C" __typeof(uselocale) __uselocale;
+
+
+}
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  typedef __locale_t __c_locale;
+
+
+
+
+
+  inline int
+  __convert_from_v(const __c_locale& __cloc __attribute__ ((__unused__)),
+     char* __out,
+     const int __size __attribute__ ((__unused__)),
+     const char* __fmt, ...)
+  {
+
+    __c_locale __old = __gnu_cxx::__uselocale(__cloc);
+    __builtin_va_list __args;
+    __builtin_va_start(__args, __fmt);
+
+
+    const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args);
+
+
+
+
+    __builtin_va_end(__args);
+
+
+    __gnu_cxx::__uselocale(__old);
+
+
+
+
+
+
+
+    return __ret;
+  }
+
+
+}
+
+       
+
+
+extern "C" {
+enum
+{
+  _ISupper = ((0) < 8 ? ((1 << (0)) << 8) : ((1 << (0)) >> 8)),
+  _ISlower = ((1) < 8 ? ((1 << (1)) << 8) : ((1 << (1)) >> 8)),
+  _ISalpha = ((2) < 8 ? ((1 << (2)) << 8) : ((1 << (2)) >> 8)),
+  _ISdigit = ((3) < 8 ? ((1 << (3)) << 8) : ((1 << (3)) >> 8)),
+  _ISxdigit = ((4) < 8 ? ((1 << (4)) << 8) : ((1 << (4)) >> 8)),
+  _ISspace = ((5) < 8 ? ((1 << (5)) << 8) : ((1 << (5)) >> 8)),
+  _ISprint = ((6) < 8 ? ((1 << (6)) << 8) : ((1 << (6)) >> 8)),
+  _ISgraph = ((7) < 8 ? ((1 << (7)) << 8) : ((1 << (7)) >> 8)),
+  _ISblank = ((8) < 8 ? ((1 << (8)) << 8) : ((1 << (8)) >> 8)),
+  _IScntrl = ((9) < 8 ? ((1 << (9)) << 8) : ((1 << (9)) >> 8)),
+  _ISpunct = ((10) < 8 ? ((1 << (10)) << 8) : ((1 << (10)) >> 8)),
+  _ISalnum = ((11) < 8 ? ((1 << (11)) << 8) : ((1 << (11)) >> 8))
+};
+extern const unsigned short int **__ctype_b_loc (void)
+     throw () __attribute__ ((__const__));
+extern const __int32_t **__ctype_tolower_loc (void)
+     throw () __attribute__ ((__const__));
+extern const __int32_t **__ctype_toupper_loc (void)
+     throw () __attribute__ ((__const__));
+extern int isalnum (int) throw ();
+extern int isalpha (int) throw ();
+extern int iscntrl (int) throw ();
+extern int isdigit (int) throw ();
+extern int islower (int) throw ();
+extern int isgraph (int) throw ();
+extern int isprint (int) throw ();
+extern int ispunct (int) throw ();
+extern int isspace (int) throw ();
+extern int isupper (int) throw ();
+extern int isxdigit (int) throw ();
+
+
+
+extern int tolower (int __c) throw ();
+
+
+extern int toupper (int __c) throw ();
+
+
+
+
+extern int isblank (int) throw ();
+
+
+
+
+extern int isctype (int __c, int __mask) throw ();
+
+
+
+
+
+
+extern int isascii (int __c) throw ();
+
+
+
+extern int toascii (int __c) throw ();
+
+
+
+extern int _toupper (int) throw ();
+extern int _tolower (int) throw ();
+extern int isalnum_l (int, locale_t) throw ();
+extern int isalpha_l (int, locale_t) throw ();
+extern int iscntrl_l (int, locale_t) throw ();
+extern int isdigit_l (int, locale_t) throw ();
+extern int islower_l (int, locale_t) throw ();
+extern int isgraph_l (int, locale_t) throw ();
+extern int isprint_l (int, locale_t) throw ();
+extern int ispunct_l (int, locale_t) throw ();
+extern int isspace_l (int, locale_t) throw ();
+extern int isupper_l (int, locale_t) throw ();
+extern int isxdigit_l (int, locale_t) throw ();
+
+extern int isblank_l (int, locale_t) throw ();
+
+
+
+extern int __tolower_l (int __c, locale_t __l) throw ();
+extern int tolower_l (int __c, locale_t __l) throw ();
+
+
+extern int __toupper_l (int __c, locale_t __l) throw ();
+extern int toupper_l (int __c, locale_t __l) throw ();
+}
+namespace std
+{
+  using ::isalnum;
+  using ::isalpha;
+  using ::iscntrl;
+  using ::isdigit;
+  using ::isgraph;
+  using ::islower;
+  using ::isprint;
+  using ::ispunct;
+  using ::isspace;
+  using ::isupper;
+  using ::isxdigit;
+  using ::tolower;
+  using ::toupper;
+}
+
+
+
+
+
+
+
+namespace std
+{
+  using ::isblank;
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  class locale;
+
+  template<typename _Facet>
+    bool
+    has_facet(const locale&) throw();
+
+  template<typename _Facet>
+    const _Facet&
+    use_facet(const locale&);
+
+
+  template<typename _CharT>
+    bool
+    isspace(_CharT, const locale&);
+
+  template<typename _CharT>
+    bool
+    isprint(_CharT, const locale&);
+
+  template<typename _CharT>
+    bool
+    iscntrl(_CharT, const locale&);
+
+  template<typename _CharT>
+    bool
+    isupper(_CharT, const locale&);
+
+  template<typename _CharT>
+    bool
+    islower(_CharT, const locale&);
+
+  template<typename _CharT>
+    bool
+    isalpha(_CharT, const locale&);
+
+  template<typename _CharT>
+    bool
+    isdigit(_CharT, const locale&);
+
+  template<typename _CharT>
+    bool
+    ispunct(_CharT, const locale&);
+
+  template<typename _CharT>
+    bool
+    isxdigit(_CharT, const locale&);
+
+  template<typename _CharT>
+    bool
+    isalnum(_CharT, const locale&);
+
+  template<typename _CharT>
+    bool
+    isgraph(_CharT, const locale&);
+
+
+  template<typename _CharT>
+    bool
+    isblank(_CharT, const locale&);
+
+
+  template<typename _CharT>
+    _CharT
+    toupper(_CharT, const locale&);
+
+  template<typename _CharT>
+    _CharT
+    tolower(_CharT, const locale&);
+
+
+  class ctype_base;
+  template<typename _CharT>
+    class ctype;
+  template<> class ctype<char>;
+
+  template<> class ctype<wchar_t>;
+
+  template<typename _CharT>
+    class ctype_byname;
+
+
+  class codecvt_base;
+  template<typename _InternT, typename _ExternT, typename _StateT>
+    class codecvt;
+  template<> class codecvt<char, char, mbstate_t>;
+
+  template<> class codecvt<wchar_t, char, mbstate_t>;
+
+  template<typename _InternT, typename _ExternT, typename _StateT>
+    class codecvt_byname;
+
+
+
+  template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
+    class num_get;
+  template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
+    class num_put;
+
+namespace __cxx11 {
+  template<typename _CharT> class numpunct;
+  template<typename _CharT> class numpunct_byname;
+}
+
+namespace __cxx11 {
+
+  template<typename _CharT>
+    class collate;
+  template<typename _CharT>
+    class collate_byname;
+}
+
+
+  class time_base;
+namespace __cxx11 {
+  template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
+    class time_get;
+  template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
+    class time_get_byname;
+}
+  template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
+    class time_put;
+  template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
+    class time_put_byname;
+
+
+  class money_base;
+namespace __cxx11 {
+  template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
+    class money_get;
+  template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
+    class money_put;
+}
+namespace __cxx11 {
+  template<typename _CharT, bool _Intl = false>
+    class moneypunct;
+  template<typename _CharT, bool _Intl = false>
+    class moneypunct_byname;
+}
+
+
+  class messages_base;
+namespace __cxx11 {
+  template<typename _CharT>
+    class messages;
+  template<typename _CharT>
+    class messages_byname;
+}
+
+
+}
+       
+
+       
+
+
+struct sched_param
+{
+  int sched_priority;
+};
+
+extern "C" {
+
+
+
+extern int clone (int (*__fn) (void *__arg), void *__child_stack,
+    int __flags, void *__arg, ...) throw ();
+
+
+extern int unshare (int __flags) throw ();
+
+
+extern int sched_getcpu (void) throw ();
+
+
+extern int setns (int __fd, int __nstype) throw ();
+
+
+}
+typedef unsigned long int __cpu_mask;
+
+
+
+
+
+
+typedef struct
+{
+  __cpu_mask __bits[1024 / (8 * sizeof (__cpu_mask))];
+} cpu_set_t;
+extern "C" {
+
+extern int __sched_cpucount (size_t __setsize, const cpu_set_t *__setp)
+     throw ();
+extern cpu_set_t *__sched_cpualloc (size_t __count) throw () ;
+extern void __sched_cpufree (cpu_set_t *__set) throw ();
+
+}
+
+
+
+
+
+
+extern "C" {
+
+
+extern int sched_setparam (__pid_t __pid, const struct sched_param *__param)
+     throw ();
+
+
+extern int sched_getparam (__pid_t __pid, struct sched_param *__param) throw ();
+
+
+extern int sched_setscheduler (__pid_t __pid, int __policy,
+          const struct sched_param *__param) throw ();
+
+
+extern int sched_getscheduler (__pid_t __pid) throw ();
+
+
+extern int sched_yield (void) throw ();
+
+
+extern int sched_get_priority_max (int __algorithm) throw ();
+
+
+extern int sched_get_priority_min (int __algorithm) throw ();
+
+
+extern int sched_rr_get_interval (__pid_t __pid, struct timespec *__t) throw ();
+extern int sched_setaffinity (__pid_t __pid, size_t __cpusetsize,
+         const cpu_set_t *__cpuset) throw ();
+
+
+extern int sched_getaffinity (__pid_t __pid, size_t __cpusetsize,
+         cpu_set_t *__cpuset) throw ();
+
+
+}
+
+
+
+struct timex
+{
+  unsigned int modes;
+  __syscall_slong_t offset;
+  __syscall_slong_t freq;
+  __syscall_slong_t maxerror;
+  __syscall_slong_t esterror;
+  int status;
+  __syscall_slong_t constant;
+  __syscall_slong_t precision;
+  __syscall_slong_t tolerance;
+  struct timeval time;
+  __syscall_slong_t tick;
+  __syscall_slong_t ppsfreq;
+  __syscall_slong_t jitter;
+  int shift;
+  __syscall_slong_t stabil;
+  __syscall_slong_t jitcnt;
+  __syscall_slong_t calcnt;
+  __syscall_slong_t errcnt;
+  __syscall_slong_t stbcnt;
+
+  int tai;
+
+
+  int :32; int :32; int :32; int :32;
+  int :32; int :32; int :32; int :32;
+  int :32; int :32; int :32;
+};
+
+extern "C" {
+
+
+extern int clock_adjtime (__clockid_t __clock_id, struct timex *__utx) throw ();
+
+}
+
+
+
+
+
+
+
+
+
+
+
+struct tm
+{
+  int tm_sec;
+  int tm_min;
+  int tm_hour;
+  int tm_mday;
+  int tm_mon;
+  int tm_year;
+  int tm_wday;
+  int tm_yday;
+  int tm_isdst;
+
+
+  long int tm_gmtoff;
+  const char *tm_zone;
+
+
+
+
+};
+
+
+
+
+
+
+
+struct itimerspec
+  {
+    struct timespec it_interval;
+    struct timespec it_value;
+  };
+struct sigevent;
+extern "C" {
+
+
+
+extern clock_t clock (void) throw ();
+
+
+extern time_t time (time_t *__timer) throw ();
+
+
+extern double difftime (time_t __time1, time_t __time0)
+     throw () __attribute__ ((__const__));
+
+
+extern time_t mktime (struct tm *__tp) throw ();
+
+
+
+
+
+extern size_t strftime (char *__restrict __s, size_t __maxsize,
+   const char *__restrict __format,
+   const struct tm *__restrict __tp) throw ();
+
+
+
+
+extern char *strptime (const char *__restrict __s,
+         const char *__restrict __fmt, struct tm *__tp)
+     throw ();
+
+
+
+
+
+
+extern size_t strftime_l (char *__restrict __s, size_t __maxsize,
+     const char *__restrict __format,
+     const struct tm *__restrict __tp,
+     locale_t __loc) throw ();
+
+
+
+extern char *strptime_l (const char *__restrict __s,
+    const char *__restrict __fmt, struct tm *__tp,
+    locale_t __loc) throw ();
+
+
+
+
+
+extern struct tm *gmtime (const time_t *__timer) throw ();
+
+
+
+extern struct tm *localtime (const time_t *__timer) throw ();
+
+
+
+
+extern struct tm *gmtime_r (const time_t *__restrict __timer,
+       struct tm *__restrict __tp) throw ();
+
+
+
+extern struct tm *localtime_r (const time_t *__restrict __timer,
+          struct tm *__restrict __tp) throw ();
+
+
+
+
+extern char *asctime (const struct tm *__tp) throw ();
+
+
+extern char *ctime (const time_t *__timer) throw ();
+
+
+
+
+
+
+extern char *asctime_r (const struct tm *__restrict __tp,
+   char *__restrict __buf) throw ();
+
+
+extern char *ctime_r (const time_t *__restrict __timer,
+        char *__restrict __buf) throw ();
+
+
+
+
+extern char *__tzname[2];
+extern int __daylight;
+extern long int __timezone;
+
+
+
+
+extern char *tzname[2];
+
+
+
+extern void tzset (void) throw ();
+
+
+
+extern int daylight;
+extern long int timezone;
+
+
+
+
+
+extern int stime (const time_t *__when) throw ();
+extern time_t timegm (struct tm *__tp) throw ();
+
+
+extern time_t timelocal (struct tm *__tp) throw ();
+
+
+extern int dysize (int __year) throw () __attribute__ ((__const__));
+extern int nanosleep (const struct timespec *__requested_time,
+        struct timespec *__remaining);
+
+
+
+extern int clock_getres (clockid_t __clock_id, struct timespec *__res) throw ();
+
+
+extern int clock_gettime (clockid_t __clock_id, struct timespec *__tp) throw ();
+
+
+extern int clock_settime (clockid_t __clock_id, const struct timespec *__tp)
+     throw ();
+
+
+
+
+
+
+extern int clock_nanosleep (clockid_t __clock_id, int __flags,
+       const struct timespec *__req,
+       struct timespec *__rem);
+
+
+extern int clock_getcpuclockid (pid_t __pid, clockid_t *__clock_id) throw ();
+
+
+
+
+extern int timer_create (clockid_t __clock_id,
+    struct sigevent *__restrict __evp,
+    timer_t *__restrict __timerid) throw ();
+
+
+extern int timer_delete (timer_t __timerid) throw ();
+
+
+extern int timer_settime (timer_t __timerid, int __flags,
+     const struct itimerspec *__restrict __value,
+     struct itimerspec *__restrict __ovalue) throw ();
+
+
+extern int timer_gettime (timer_t __timerid, struct itimerspec *__value)
+     throw ();
+
+
+extern int timer_getoverrun (timer_t __timerid) throw ();
+
+
+
+
+
+extern int timespec_get (struct timespec *__ts, int __base)
+     throw () __attribute__ ((__nonnull__ (1)));
+extern int getdate_err;
+extern struct tm *getdate (const char *__string);
+extern int getdate_r (const char *__restrict __string,
+        struct tm *__restrict __resbufp);
+
+
+}
+
+
+
+
+
+
+typedef long int __jmp_buf[8];
+
+
+
+
+enum
+{
+  PTHREAD_CREATE_JOINABLE,
+
+  PTHREAD_CREATE_DETACHED
+
+};
+
+
+
+enum
+{
+  PTHREAD_MUTEX_TIMED_NP,
+  PTHREAD_MUTEX_RECURSIVE_NP,
+  PTHREAD_MUTEX_ERRORCHECK_NP,
+  PTHREAD_MUTEX_ADAPTIVE_NP
+
+  ,
+  PTHREAD_MUTEX_NORMAL = PTHREAD_MUTEX_TIMED_NP,
+  PTHREAD_MUTEX_RECURSIVE = PTHREAD_MUTEX_RECURSIVE_NP,
+  PTHREAD_MUTEX_ERRORCHECK = PTHREAD_MUTEX_ERRORCHECK_NP,
+  PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL
+
+
+
+  , PTHREAD_MUTEX_FAST_NP = PTHREAD_MUTEX_TIMED_NP
+
+};
+
+
+
+
+enum
+{
+  PTHREAD_MUTEX_STALLED,
+  PTHREAD_MUTEX_STALLED_NP = PTHREAD_MUTEX_STALLED,
+  PTHREAD_MUTEX_ROBUST,
+  PTHREAD_MUTEX_ROBUST_NP = PTHREAD_MUTEX_ROBUST
+};
+
+
+
+
+
+enum
+{
+  PTHREAD_PRIO_NONE,
+  PTHREAD_PRIO_INHERIT,
+  PTHREAD_PRIO_PROTECT
+};
+enum
+{
+  PTHREAD_RWLOCK_PREFER_READER_NP,
+  PTHREAD_RWLOCK_PREFER_WRITER_NP,
+  PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,
+  PTHREAD_RWLOCK_DEFAULT_NP = PTHREAD_RWLOCK_PREFER_READER_NP
+};
+enum
+{
+  PTHREAD_INHERIT_SCHED,
+
+  PTHREAD_EXPLICIT_SCHED
+
+};
+
+
+
+enum
+{
+  PTHREAD_SCOPE_SYSTEM,
+
+  PTHREAD_SCOPE_PROCESS
+
+};
+
+
+
+enum
+{
+  PTHREAD_PROCESS_PRIVATE,
+
+  PTHREAD_PROCESS_SHARED
+
+};
+struct _pthread_cleanup_buffer
+{
+  void (*__routine) (void *);
+  void *__arg;
+  int __canceltype;
+  struct _pthread_cleanup_buffer *__prev;
+};
+
+
+enum
+{
+  PTHREAD_CANCEL_ENABLE,
+
+  PTHREAD_CANCEL_DISABLE
+
+};
+enum
+{
+  PTHREAD_CANCEL_DEFERRED,
+
+  PTHREAD_CANCEL_ASYNCHRONOUS
+
+};
+extern "C" {
+
+
+
+
+extern int pthread_create (pthread_t *__restrict __newthread,
+      const pthread_attr_t *__restrict __attr,
+      void *(*__start_routine) (void *),
+      void *__restrict __arg) throw () __attribute__ ((__nonnull__ (1, 3)));
+
+
+
+
+
+extern void pthread_exit (void *__retval) __attribute__ ((__noreturn__));
+
+
+
+
+
+
+
+extern int pthread_join (pthread_t __th, void **__thread_return);
+
+
+
+
+extern int pthread_tryjoin_np (pthread_t __th, void **__thread_return) throw ();
+
+
+
+
+
+
+
+extern int pthread_timedjoin_np (pthread_t __th, void **__thread_return,
+     const struct timespec *__abstime);
+
+
+
+
+
+
+extern int pthread_detach (pthread_t __th) throw ();
+
+
+
+extern pthread_t pthread_self (void) throw () __attribute__ ((__const__));
+
+
+extern int pthread_equal (pthread_t __thread1, pthread_t __thread2)
+  throw () __attribute__ ((__const__));
+
+
+
+
+
+
+
+extern int pthread_attr_init (pthread_attr_t *__attr) throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_attr_destroy (pthread_attr_t *__attr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_attr_getdetachstate (const pthread_attr_t *__attr,
+     int *__detachstate)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_attr_setdetachstate (pthread_attr_t *__attr,
+     int __detachstate)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_attr_getguardsize (const pthread_attr_t *__attr,
+          size_t *__guardsize)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_attr_setguardsize (pthread_attr_t *__attr,
+          size_t __guardsize)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_attr_getschedparam (const pthread_attr_t *__restrict __attr,
+           struct sched_param *__restrict __param)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_attr_setschedparam (pthread_attr_t *__restrict __attr,
+           const struct sched_param *__restrict
+           __param) throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_attr_getschedpolicy (const pthread_attr_t *__restrict
+     __attr, int *__restrict __policy)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_attr_setschedpolicy (pthread_attr_t *__attr, int __policy)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_attr_getinheritsched (const pthread_attr_t *__restrict
+      __attr, int *__restrict __inherit)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_attr_setinheritsched (pthread_attr_t *__attr,
+      int __inherit)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_attr_getscope (const pthread_attr_t *__restrict __attr,
+      int *__restrict __scope)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_attr_setscope (pthread_attr_t *__attr, int __scope)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_attr_getstackaddr (const pthread_attr_t *__restrict
+          __attr, void **__restrict __stackaddr)
+     throw () __attribute__ ((__nonnull__ (1, 2))) __attribute__ ((__deprecated__));
+
+
+
+
+
+extern int pthread_attr_setstackaddr (pthread_attr_t *__attr,
+          void *__stackaddr)
+     throw () __attribute__ ((__nonnull__ (1))) __attribute__ ((__deprecated__));
+
+
+extern int pthread_attr_getstacksize (const pthread_attr_t *__restrict
+          __attr, size_t *__restrict __stacksize)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+extern int pthread_attr_setstacksize (pthread_attr_t *__attr,
+          size_t __stacksize)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_attr_getstack (const pthread_attr_t *__restrict __attr,
+      void **__restrict __stackaddr,
+      size_t *__restrict __stacksize)
+     throw () __attribute__ ((__nonnull__ (1, 2, 3)));
+
+
+
+
+extern int pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr,
+      size_t __stacksize) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+extern int pthread_attr_setaffinity_np (pthread_attr_t *__attr,
+     size_t __cpusetsize,
+     const cpu_set_t *__cpuset)
+     throw () __attribute__ ((__nonnull__ (1, 3)));
+
+
+
+extern int pthread_attr_getaffinity_np (const pthread_attr_t *__attr,
+     size_t __cpusetsize,
+     cpu_set_t *__cpuset)
+     throw () __attribute__ ((__nonnull__ (1, 3)));
+
+
+extern int pthread_getattr_default_np (pthread_attr_t *__attr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_setattr_default_np (const pthread_attr_t *__attr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+extern int pthread_getattr_np (pthread_t __th, pthread_attr_t *__attr)
+     throw () __attribute__ ((__nonnull__ (2)));
+
+
+
+
+
+
+
+extern int pthread_setschedparam (pthread_t __target_thread, int __policy,
+      const struct sched_param *__param)
+     throw () __attribute__ ((__nonnull__ (3)));
+
+
+extern int pthread_getschedparam (pthread_t __target_thread,
+      int *__restrict __policy,
+      struct sched_param *__restrict __param)
+     throw () __attribute__ ((__nonnull__ (2, 3)));
+
+
+extern int pthread_setschedprio (pthread_t __target_thread, int __prio)
+     throw ();
+
+
+
+
+extern int pthread_getname_np (pthread_t __target_thread, char *__buf,
+          size_t __buflen)
+     throw () __attribute__ ((__nonnull__ (2)));
+
+
+extern int pthread_setname_np (pthread_t __target_thread, const char *__name)
+     throw () __attribute__ ((__nonnull__ (2)));
+
+
+
+
+
+extern int pthread_getconcurrency (void) throw ();
+
+
+extern int pthread_setconcurrency (int __level) throw ();
+
+
+
+
+
+
+
+extern int pthread_yield (void) throw ();
+
+
+
+
+extern int pthread_setaffinity_np (pthread_t __th, size_t __cpusetsize,
+       const cpu_set_t *__cpuset)
+     throw () __attribute__ ((__nonnull__ (3)));
+
+
+extern int pthread_getaffinity_np (pthread_t __th, size_t __cpusetsize,
+       cpu_set_t *__cpuset)
+     throw () __attribute__ ((__nonnull__ (3)));
+extern int pthread_once (pthread_once_t *__once_control,
+    void (*__init_routine) (void)) __attribute__ ((__nonnull__ (1, 2)));
+extern int pthread_setcancelstate (int __state, int *__oldstate);
+
+
+
+extern int pthread_setcanceltype (int __type, int *__oldtype);
+
+
+extern int pthread_cancel (pthread_t __th);
+
+
+
+
+extern void pthread_testcancel (void);
+
+
+
+
+typedef struct
+{
+  struct
+  {
+    __jmp_buf __cancel_jmp_buf;
+    int __mask_was_saved;
+  } __cancel_jmp_buf[1];
+  void *__pad[4];
+} __pthread_unwind_buf_t __attribute__ ((__aligned__));
+struct __pthread_cleanup_frame
+{
+  void (*__cancel_routine) (void *);
+  void *__cancel_arg;
+  int __do_it;
+  int __cancel_type;
+};
+
+
+
+
+class __pthread_cleanup_class
+{
+  void (*__cancel_routine) (void *);
+  void *__cancel_arg;
+  int __do_it;
+  int __cancel_type;
+
+ public:
+  __pthread_cleanup_class (void (*__fct) (void *), void *__arg)
+    : __cancel_routine (__fct), __cancel_arg (__arg), __do_it (1) { }
+  ~__pthread_cleanup_class () { if (__do_it) __cancel_routine (__cancel_arg); }
+  void __setdoit (int __newval) { __do_it = __newval; }
+  void __defer () { pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED,
+        &__cancel_type); }
+  void __restore () const { pthread_setcanceltype (__cancel_type, 0); }
+};
+struct __jmp_buf_tag;
+extern int __sigsetjmp (struct __jmp_buf_tag *__env, int __savemask) throw ();
+
+
+
+
+
+extern int pthread_mutex_init (pthread_mutex_t *__mutex,
+          const pthread_mutexattr_t *__mutexattr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_mutex_destroy (pthread_mutex_t *__mutex)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_mutex_trylock (pthread_mutex_t *__mutex)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_mutex_lock (pthread_mutex_t *__mutex)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_mutex_timedlock (pthread_mutex_t *__restrict __mutex,
+        const struct timespec *__restrict
+        __abstime) throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+extern int pthread_mutex_unlock (pthread_mutex_t *__mutex)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_mutex_getprioceiling (const pthread_mutex_t *
+      __restrict __mutex,
+      int *__restrict __prioceiling)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+extern int pthread_mutex_setprioceiling (pthread_mutex_t *__restrict __mutex,
+      int __prioceiling,
+      int *__restrict __old_ceiling)
+     throw () __attribute__ ((__nonnull__ (1, 3)));
+
+
+
+
+extern int pthread_mutex_consistent (pthread_mutex_t *__mutex)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+extern int pthread_mutex_consistent_np (pthread_mutex_t *__mutex)
+     throw () __attribute__ ((__nonnull__ (1)));
+extern int pthread_mutexattr_init (pthread_mutexattr_t *__attr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_mutexattr_destroy (pthread_mutexattr_t *__attr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_mutexattr_getpshared (const pthread_mutexattr_t *
+      __restrict __attr,
+      int *__restrict __pshared)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_mutexattr_setpshared (pthread_mutexattr_t *__attr,
+      int __pshared)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_mutexattr_gettype (const pthread_mutexattr_t *__restrict
+          __attr, int *__restrict __kind)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+extern int pthread_mutexattr_settype (pthread_mutexattr_t *__attr, int __kind)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_mutexattr_getprotocol (const pthread_mutexattr_t *
+       __restrict __attr,
+       int *__restrict __protocol)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+extern int pthread_mutexattr_setprotocol (pthread_mutexattr_t *__attr,
+       int __protocol)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_mutexattr_getprioceiling (const pthread_mutexattr_t *
+          __restrict __attr,
+          int *__restrict __prioceiling)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_mutexattr_setprioceiling (pthread_mutexattr_t *__attr,
+          int __prioceiling)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_mutexattr_getrobust (const pthread_mutexattr_t *__attr,
+     int *__robustness)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+extern int pthread_mutexattr_getrobust_np (const pthread_mutexattr_t *__attr,
+        int *__robustness)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+extern int pthread_mutexattr_setrobust (pthread_mutexattr_t *__attr,
+     int __robustness)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+extern int pthread_mutexattr_setrobust_np (pthread_mutexattr_t *__attr,
+        int __robustness)
+     throw () __attribute__ ((__nonnull__ (1)));
+extern int pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
+    const pthread_rwlockattr_t *__restrict
+    __attr) throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_rwlock_destroy (pthread_rwlock_t *__rwlock)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock)
+  throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_rwlock_timedrdlock (pthread_rwlock_t *__restrict __rwlock,
+           const struct timespec *__restrict
+           __abstime) throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+extern int pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_rwlock_timedwrlock (pthread_rwlock_t *__restrict __rwlock,
+           const struct timespec *__restrict
+           __abstime) throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+extern int pthread_rwlock_unlock (pthread_rwlock_t *__rwlock)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+extern int pthread_rwlockattr_init (pthread_rwlockattr_t *__attr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_rwlockattr_destroy (pthread_rwlockattr_t *__attr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_rwlockattr_getpshared (const pthread_rwlockattr_t *
+       __restrict __attr,
+       int *__restrict __pshared)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_rwlockattr_setpshared (pthread_rwlockattr_t *__attr,
+       int __pshared)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_rwlockattr_getkind_np (const pthread_rwlockattr_t *
+       __restrict __attr,
+       int *__restrict __pref)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_rwlockattr_setkind_np (pthread_rwlockattr_t *__attr,
+       int __pref) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+
+extern int pthread_cond_init (pthread_cond_t *__restrict __cond,
+         const pthread_condattr_t *__restrict __cond_attr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_cond_destroy (pthread_cond_t *__cond)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_cond_signal (pthread_cond_t *__cond)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_cond_broadcast (pthread_cond_t *__cond)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+extern int pthread_cond_wait (pthread_cond_t *__restrict __cond,
+         pthread_mutex_t *__restrict __mutex)
+     __attribute__ ((__nonnull__ (1, 2)));
+extern int pthread_cond_timedwait (pthread_cond_t *__restrict __cond,
+       pthread_mutex_t *__restrict __mutex,
+       const struct timespec *__restrict __abstime)
+     __attribute__ ((__nonnull__ (1, 2, 3)));
+
+
+
+
+extern int pthread_condattr_init (pthread_condattr_t *__attr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_condattr_destroy (pthread_condattr_t *__attr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_condattr_getpshared (const pthread_condattr_t *
+     __restrict __attr,
+     int *__restrict __pshared)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_condattr_setpshared (pthread_condattr_t *__attr,
+     int __pshared) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_condattr_getclock (const pthread_condattr_t *
+          __restrict __attr,
+          __clockid_t *__restrict __clock_id)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_condattr_setclock (pthread_condattr_t *__attr,
+          __clockid_t __clock_id)
+     throw () __attribute__ ((__nonnull__ (1)));
+extern int pthread_spin_init (pthread_spinlock_t *__lock, int __pshared)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_spin_destroy (pthread_spinlock_t *__lock)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_spin_lock (pthread_spinlock_t *__lock)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_spin_trylock (pthread_spinlock_t *__lock)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_spin_unlock (pthread_spinlock_t *__lock)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+extern int pthread_barrier_init (pthread_barrier_t *__restrict __barrier,
+     const pthread_barrierattr_t *__restrict
+     __attr, unsigned int __count)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_barrier_destroy (pthread_barrier_t *__barrier)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_barrier_wait (pthread_barrier_t *__barrier)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int pthread_barrierattr_init (pthread_barrierattr_t *__attr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_barrierattr_destroy (pthread_barrierattr_t *__attr)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_barrierattr_getpshared (const pthread_barrierattr_t *
+        __restrict __attr,
+        int *__restrict __pshared)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+extern int pthread_barrierattr_setpshared (pthread_barrierattr_t *__attr,
+        int __pshared)
+     throw () __attribute__ ((__nonnull__ (1)));
+extern int pthread_key_create (pthread_key_t *__key,
+          void (*__destr_function) (void *))
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int pthread_key_delete (pthread_key_t __key) throw ();
+
+
+extern void *pthread_getspecific (pthread_key_t __key) throw ();
+
+
+extern int pthread_setspecific (pthread_key_t __key,
+    const void *__pointer) throw () ;
+
+
+
+
+extern int pthread_getcpuclockid (pthread_t __thread_id,
+      __clockid_t *__clock_id)
+     throw () __attribute__ ((__nonnull__ (2)));
+extern int pthread_atfork (void (*__prepare) (void),
+      void (*__parent) (void),
+      void (*__child) (void)) throw ();
+}
+typedef pthread_t __gthread_t;
+typedef pthread_key_t __gthread_key_t;
+typedef pthread_once_t __gthread_once_t;
+typedef pthread_mutex_t __gthread_mutex_t;
+typedef pthread_mutex_t __gthread_recursive_mutex_t;
+typedef pthread_cond_t __gthread_cond_t;
+typedef struct timespec __gthread_time_t;
+static __typeof(pthread_once) __gthrw_pthread_once __attribute__ ((__weakref__("pthread_once")));
+static __typeof(pthread_getspecific) __gthrw_pthread_getspecific __attribute__ ((__weakref__("pthread_getspecific")));
+static __typeof(pthread_setspecific) __gthrw_pthread_setspecific __attribute__ ((__weakref__("pthread_setspecific")));
+
+static __typeof(pthread_create) __gthrw_pthread_create __attribute__ ((__weakref__("pthread_create")));
+static __typeof(pthread_join) __gthrw_pthread_join __attribute__ ((__weakref__("pthread_join")));
+static __typeof(pthread_equal) __gthrw_pthread_equal __attribute__ ((__weakref__("pthread_equal")));
+static __typeof(pthread_self) __gthrw_pthread_self __attribute__ ((__weakref__("pthread_self")));
+static __typeof(pthread_detach) __gthrw_pthread_detach __attribute__ ((__weakref__("pthread_detach")));
+
+static __typeof(pthread_cancel) __gthrw_pthread_cancel __attribute__ ((__weakref__("pthread_cancel")));
+
+static __typeof(sched_yield) __gthrw_sched_yield __attribute__ ((__weakref__("sched_yield")));
+
+static __typeof(pthread_mutex_lock) __gthrw_pthread_mutex_lock __attribute__ ((__weakref__("pthread_mutex_lock")));
+static __typeof(pthread_mutex_trylock) __gthrw_pthread_mutex_trylock __attribute__ ((__weakref__("pthread_mutex_trylock")));
+
+static __typeof(pthread_mutex_timedlock) __gthrw_pthread_mutex_timedlock __attribute__ ((__weakref__("pthread_mutex_timedlock")));
+
+static __typeof(pthread_mutex_unlock) __gthrw_pthread_mutex_unlock __attribute__ ((__weakref__("pthread_mutex_unlock")));
+static __typeof(pthread_mutex_init) __gthrw_pthread_mutex_init __attribute__ ((__weakref__("pthread_mutex_init")));
+static __typeof(pthread_mutex_destroy) __gthrw_pthread_mutex_destroy __attribute__ ((__weakref__("pthread_mutex_destroy")));
+
+static __typeof(pthread_cond_init) __gthrw_pthread_cond_init __attribute__ ((__weakref__("pthread_cond_init")));
+static __typeof(pthread_cond_broadcast) __gthrw_pthread_cond_broadcast __attribute__ ((__weakref__("pthread_cond_broadcast")));
+static __typeof(pthread_cond_signal) __gthrw_pthread_cond_signal __attribute__ ((__weakref__("pthread_cond_signal")));
+static __typeof(pthread_cond_wait) __gthrw_pthread_cond_wait __attribute__ ((__weakref__("pthread_cond_wait")));
+static __typeof(pthread_cond_timedwait) __gthrw_pthread_cond_timedwait __attribute__ ((__weakref__("pthread_cond_timedwait")));
+static __typeof(pthread_cond_destroy) __gthrw_pthread_cond_destroy __attribute__ ((__weakref__("pthread_cond_destroy")));
+
+static __typeof(pthread_key_create) __gthrw_pthread_key_create __attribute__ ((__weakref__("pthread_key_create")));
+static __typeof(pthread_key_delete) __gthrw_pthread_key_delete __attribute__ ((__weakref__("pthread_key_delete")));
+static __typeof(pthread_mutexattr_init) __gthrw_pthread_mutexattr_init __attribute__ ((__weakref__("pthread_mutexattr_init")));
+static __typeof(pthread_mutexattr_settype) __gthrw_pthread_mutexattr_settype __attribute__ ((__weakref__("pthread_mutexattr_settype")));
+static __typeof(pthread_mutexattr_destroy) __gthrw_pthread_mutexattr_destroy __attribute__ ((__weakref__("pthread_mutexattr_destroy")));
+static __typeof(pthread_key_create) __gthrw___pthread_key_create __attribute__ ((__weakref__("__pthread_key_create")));
+static inline int
+__gthread_active_p (void)
+{
+  static void *const __gthread_active_ptr
+    = __extension__ (void *) &__gthrw___pthread_key_create;
+  return __gthread_active_ptr != 0;
+}
+static inline int
+__gthread_create (__gthread_t *__threadid, void *(*__func) (void*),
+    void *__args)
+{
+  return __gthrw_pthread_create (__threadid, __null, __func, __args);
+}
+
+static inline int
+__gthread_join (__gthread_t __threadid, void **__value_ptr)
+{
+  return __gthrw_pthread_join (__threadid, __value_ptr);
+}
+
+static inline int
+__gthread_detach (__gthread_t __threadid)
+{
+  return __gthrw_pthread_detach (__threadid);
+}
+
+static inline int
+__gthread_equal (__gthread_t __t1, __gthread_t __t2)
+{
+  return __gthrw_pthread_equal (__t1, __t2);
+}
+
+static inline __gthread_t
+__gthread_self (void)
+{
+  return __gthrw_pthread_self ();
+}
+
+static inline int
+__gthread_yield (void)
+{
+  return __gthrw_sched_yield ();
+}
+
+static inline int
+__gthread_once (__gthread_once_t *__once, void (*__func) (void))
+{
+  if (__gthread_active_p ())
+    return __gthrw_pthread_once (__once, __func);
+  else
+    return -1;
+}
+
+static inline int
+__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
+{
+  return __gthrw_pthread_key_create (__key, __dtor);
+}
+
+static inline int
+__gthread_key_delete (__gthread_key_t __key)
+{
+  return __gthrw_pthread_key_delete (__key);
+}
+
+static inline void *
+__gthread_getspecific (__gthread_key_t __key)
+{
+  return __gthrw_pthread_getspecific (__key);
+}
+
+static inline int
+__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
+{
+  return __gthrw_pthread_setspecific (__key, __ptr);
+}
+
+static inline void
+__gthread_mutex_init_function (__gthread_mutex_t *__mutex)
+{
+  if (__gthread_active_p ())
+    __gthrw_pthread_mutex_init (__mutex, __null);
+}
+
+static inline int
+__gthread_mutex_destroy (__gthread_mutex_t *__mutex)
+{
+  if (__gthread_active_p ())
+    return __gthrw_pthread_mutex_destroy (__mutex);
+  else
+    return 0;
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t *__mutex)
+{
+  if (__gthread_active_p ())
+    return __gthrw_pthread_mutex_lock (__mutex);
+  else
+    return 0;
+}
+
+static inline int
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
+{
+  if (__gthread_active_p ())
+    return __gthrw_pthread_mutex_trylock (__mutex);
+  else
+    return 0;
+}
+
+
+static inline int
+__gthread_mutex_timedlock (__gthread_mutex_t *__mutex,
+      const __gthread_time_t *__abs_timeout)
+{
+  if (__gthread_active_p ())
+    return __gthrw_pthread_mutex_timedlock (__mutex, __abs_timeout);
+  else
+    return 0;
+}
+
+
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
+{
+  if (__gthread_active_p ())
+    return __gthrw_pthread_mutex_unlock (__mutex);
+  else
+    return 0;
+}
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
+{
+  return __gthread_mutex_lock (__mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
+{
+  return __gthread_mutex_trylock (__mutex);
+}
+
+
+static inline int
+__gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *__mutex,
+         const __gthread_time_t *__abs_timeout)
+{
+  return __gthread_mutex_timedlock (__mutex, __abs_timeout);
+}
+
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
+{
+  return __gthread_mutex_unlock (__mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex)
+{
+  return __gthread_mutex_destroy (__mutex);
+}
+static inline int
+__gthread_cond_broadcast (__gthread_cond_t *__cond)
+{
+  return __gthrw_pthread_cond_broadcast (__cond);
+}
+
+static inline int
+__gthread_cond_signal (__gthread_cond_t *__cond)
+{
+  return __gthrw_pthread_cond_signal (__cond);
+}
+
+static inline int
+__gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex)
+{
+  return __gthrw_pthread_cond_wait (__cond, __mutex);
+}
+
+static inline int
+__gthread_cond_timedwait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex,
+     const __gthread_time_t *__abs_timeout)
+{
+  return __gthrw_pthread_cond_timedwait (__cond, __mutex, __abs_timeout);
+}
+
+static inline int
+__gthread_cond_wait_recursive (__gthread_cond_t *__cond,
+          __gthread_recursive_mutex_t *__mutex)
+{
+  return __gthread_cond_wait (__cond, __mutex);
+}
+
+static inline int
+__gthread_cond_destroy (__gthread_cond_t* __cond)
+{
+  return __gthrw_pthread_cond_destroy (__cond);
+}
+
+
+typedef int _Atomic_word;
+
+namespace __gnu_cxx __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+
+  static inline _Atomic_word
+  __exchange_and_add(volatile _Atomic_word* __mem, int __val)
+  { return __atomic_fetch_add(__mem, __val, 4); }
+
+  static inline void
+  __atomic_add(volatile _Atomic_word* __mem, int __val)
+  { __atomic_fetch_add(__mem, __val, 4); }
+  static inline _Atomic_word
+  __exchange_and_add_single(_Atomic_word* __mem, int __val)
+  {
+    _Atomic_word __result = *__mem;
+    *__mem += __val;
+    return __result;
+  }
+
+  static inline void
+  __atomic_add_single(_Atomic_word* __mem, int __val)
+  { *__mem += __val; }
+
+  static inline _Atomic_word
+  __attribute__ ((__unused__))
+  __exchange_and_add_dispatch(_Atomic_word* __mem, int __val)
+  {
+
+    if (__gthread_active_p())
+      return __exchange_and_add(__mem, __val);
+    else
+      return __exchange_and_add_single(__mem, __val);
+
+
+
+  }
+
+  static inline void
+  __attribute__ ((__unused__))
+  __atomic_add_dispatch(_Atomic_word* __mem, int __val)
+  {
+
+    if (__gthread_active_p())
+      __atomic_add(__mem, __val);
+    else
+      __atomic_add_single(__mem, __val);
+
+
+
+  }
+
+
+}
+
+       
+
+
+       
+
+
+
+
+namespace __gnu_cxx __attribute__ ((__visibility__ ("default")))
+{
+
+
+  using std::size_t;
+  using std::ptrdiff_t;
+  template<typename _Tp>
+    class new_allocator
+    {
+    public:
+      typedef size_t size_type;
+      typedef ptrdiff_t difference_type;
+      typedef _Tp* pointer;
+      typedef const _Tp* const_pointer;
+      typedef _Tp& reference;
+      typedef const _Tp& const_reference;
+      typedef _Tp value_type;
+
+      template<typename _Tp1>
+ struct rebind
+ { typedef new_allocator<_Tp1> other; };
+
+
+
+
+      typedef std::true_type propagate_on_container_move_assignment;
+
+
+      new_allocator() noexcept { }
+
+      new_allocator(const new_allocator&) noexcept { }
+
+      template<typename _Tp1>
+ new_allocator(const new_allocator<_Tp1>&) noexcept { }
+
+      ~new_allocator() noexcept { }
+
+      pointer
+      address(reference __x) const noexcept
+      { return std::__addressof(__x); }
+
+      const_pointer
+      address(const_reference __x) const noexcept
+      { return std::__addressof(__x); }
+
+
+
+      pointer
+      allocate(size_type __n, const void* = static_cast<const void*>(0))
+      {
+ if (__n > this->max_size())
+   std::__throw_bad_alloc();
+ return static_cast<_Tp*>(::operator new(__n * sizeof(_Tp)));
+      }
+
+
+      void
+      deallocate(pointer __p, size_type)
+      {
+
+
+
+
+
+
+
+ ::operator delete(__p);
+      }
+
+      size_type
+      max_size() const noexcept
+      { return size_t(-1) / sizeof(_Tp); }
+
+
+      template<typename _Up, typename... _Args>
+ void
+ construct(_Up* __p, _Args&&... __args)
+ { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
+
+      template<typename _Up>
+ void
+ destroy(_Up* __p) { __p->~_Up(); }
+    };
+
+  template<typename _Tp>
+    inline bool
+    operator==(const new_allocator<_Tp>&, const new_allocator<_Tp>&)
+    { return true; }
+
+  template<typename _Tp>
+    inline bool
+    operator!=(const new_allocator<_Tp>&, const new_allocator<_Tp>&)
+    { return false; }
+
+
+}
+
+
+namespace std
+{
+  template<typename _Tp>
+    using __allocator_base = __gnu_cxx::new_allocator<_Tp>;
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+
+
+  template<>
+    class allocator<void>
+    {
+    public:
+      typedef size_t size_type;
+      typedef ptrdiff_t difference_type;
+      typedef void* pointer;
+      typedef const void* const_pointer;
+      typedef void value_type;
+
+      template<typename _Tp1>
+ struct rebind
+ { typedef allocator<_Tp1> other; };
+
+
+
+
+      typedef true_type propagate_on_container_move_assignment;
+
+      typedef true_type is_always_equal;
+
+      template<typename _Up, typename... _Args>
+ void
+ construct(_Up* __p, _Args&&... __args)
+ { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
+
+      template<typename _Up>
+ void
+ destroy(_Up* __p) { __p->~_Up(); }
+
+    };
+  template<typename _Tp>
+    class allocator : public __allocator_base<_Tp>
+    {
+   public:
+      typedef size_t size_type;
+      typedef ptrdiff_t difference_type;
+      typedef _Tp* pointer;
+      typedef const _Tp* const_pointer;
+      typedef _Tp& reference;
+      typedef const _Tp& const_reference;
+      typedef _Tp value_type;
+
+      template<typename _Tp1>
+ struct rebind
+ { typedef allocator<_Tp1> other; };
+
+
+
+
+      typedef true_type propagate_on_container_move_assignment;
+
+      typedef true_type is_always_equal;
+
+
+      allocator() throw() { }
+
+      allocator(const allocator& __a) throw()
+      : __allocator_base<_Tp>(__a) { }
+
+      template<typename _Tp1>
+ allocator(const allocator<_Tp1>&) throw() { }
+
+      ~allocator() throw() { }
+
+
+    };
+
+  template<typename _T1, typename _T2>
+    inline bool
+    operator==(const allocator<_T1>&, const allocator<_T2>&)
+    noexcept
+    { return true; }
+
+  template<typename _Tp>
+    inline bool
+    operator==(const allocator<_Tp>&, const allocator<_Tp>&)
+    noexcept
+    { return true; }
+
+  template<typename _T1, typename _T2>
+    inline bool
+    operator!=(const allocator<_T1>&, const allocator<_T2>&)
+    noexcept
+    { return false; }
+
+  template<typename _Tp>
+    inline bool
+    operator!=(const allocator<_Tp>&, const allocator<_Tp>&)
+    noexcept
+    { return false; }
+
+
+
+  template<typename _Tp>
+    class allocator<const _Tp>
+    {
+    public:
+      typedef _Tp value_type;
+      template<typename _Up> allocator(const allocator<_Up>&) { }
+    };
+
+  template<typename _Tp>
+    class allocator<volatile _Tp>
+    {
+    public:
+      typedef _Tp value_type;
+      template<typename _Up> allocator(const allocator<_Up>&) { }
+    };
+
+  template<typename _Tp>
+    class allocator<const volatile _Tp>
+    {
+    public:
+      typedef _Tp value_type;
+      template<typename _Up> allocator(const allocator<_Up>&) { }
+    };
+
+
+
+
+
+
+  extern template class allocator<char>;
+  extern template class allocator<wchar_t>;
+
+
+
+
+
+
+  template<typename _Alloc, bool = __is_empty(_Alloc)>
+    struct __alloc_swap
+    { static void _S_do_it(_Alloc&, _Alloc&) noexcept { } };
+
+  template<typename _Alloc>
+    struct __alloc_swap<_Alloc, false>
+    {
+      static void
+      _S_do_it(_Alloc& __one, _Alloc& __two) noexcept
+      {
+
+ if (__one != __two)
+   swap(__one, __two);
+      }
+    };
+
+
+  template<typename _Alloc, bool = __is_empty(_Alloc)>
+    struct __alloc_neq
+    {
+      static bool
+      _S_do_it(const _Alloc&, const _Alloc&)
+      { return false; }
+    };
+
+  template<typename _Alloc>
+    struct __alloc_neq<_Alloc, false>
+    {
+      static bool
+      _S_do_it(const _Alloc& __one, const _Alloc& __two)
+      { return __one != __two; }
+    };
+
+
+  template<typename _Tp, bool
+    = __or_<is_copy_constructible<typename _Tp::value_type>,
+            is_nothrow_move_constructible<typename _Tp::value_type>>::value>
+    struct __shrink_to_fit_aux
+    { static bool _S_do_it(_Tp&) noexcept { return false; } };
+
+  template<typename _Tp>
+    struct __shrink_to_fit_aux<_Tp, true>
+    {
+      static bool
+      _S_do_it(_Tp& __c) noexcept
+      {
+
+ try
+   {
+     _Tp(__make_move_if_noexcept_iterator(__c.begin()),
+  __make_move_if_noexcept_iterator(__c.end()),
+  __c.get_allocator()).swap(__c);
+     return true;
+   }
+ catch(...)
+   { return false; }
+
+
+
+      }
+    };
+
+
+
+}
+
+
+       
+
+
+       
+
+
+
+namespace __cxxabiv1
+{
+
+
+
+
+
+
+
+  class __forced_unwind
+  {
+    virtual ~__forced_unwind() throw();
+
+
+    virtual void __pure_dummy() = 0;
+  };
+}
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  template<typename _CharT, typename _Traits>
+    inline void
+    __ostream_write(basic_ostream<_CharT, _Traits>& __out,
+      const _CharT* __s, streamsize __n)
+    {
+      typedef basic_ostream<_CharT, _Traits> __ostream_type;
+      typedef typename __ostream_type::ios_base __ios_base;
+
+      const streamsize __put = __out.rdbuf()->sputn(__s, __n);
+      if (__put != __n)
+ __out.setstate(__ios_base::badbit);
+    }
+
+  template<typename _CharT, typename _Traits>
+    inline void
+    __ostream_fill(basic_ostream<_CharT, _Traits>& __out, streamsize __n)
+    {
+      typedef basic_ostream<_CharT, _Traits> __ostream_type;
+      typedef typename __ostream_type::ios_base __ios_base;
+
+      const _CharT __c = __out.fill();
+      for (; __n > 0; --__n)
+ {
+   const typename _Traits::int_type __put = __out.rdbuf()->sputc(__c);
+   if (_Traits::eq_int_type(__put, _Traits::eof()))
+     {
+       __out.setstate(__ios_base::badbit);
+       break;
+     }
+ }
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    __ostream_insert(basic_ostream<_CharT, _Traits>& __out,
+       const _CharT* __s, streamsize __n)
+    {
+      typedef basic_ostream<_CharT, _Traits> __ostream_type;
+      typedef typename __ostream_type::ios_base __ios_base;
+
+      typename __ostream_type::sentry __cerb(__out);
+      if (__cerb)
+ {
+   try
+     {
+       const streamsize __w = __out.width();
+       if (__w > __n)
+  {
+    const bool __left = ((__out.flags()
+     & __ios_base::adjustfield)
+           == __ios_base::left);
+    if (!__left)
+      __ostream_fill(__out, __w - __n);
+    if (__out.good())
+      __ostream_write(__out, __s, __n);
+    if (__left && __out.good())
+      __ostream_fill(__out, __w - __n);
+  }
+       else
+  __ostream_write(__out, __s, __n);
+       __out.width(0);
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       __out._M_setstate(__ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { __out._M_setstate(__ios_base::badbit); }
+ }
+      return __out;
+    }
+
+
+
+
+  extern template ostream& __ostream_insert(ostream&, const char*, streamsize);
+
+
+  extern template wostream& __ostream_insert(wostream&, const wchar_t*,
+          streamsize);
+
+
+
+
+}
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _Arg, typename _Result>
+    struct unary_function
+    {
+
+      typedef _Arg argument_type;
+
+
+      typedef _Result result_type;
+    };
+
+
+
+
+  template<typename _Arg1, typename _Arg2, typename _Result>
+    struct binary_function
+    {
+
+      typedef _Arg1 first_argument_type;
+
+
+      typedef _Arg2 second_argument_type;
+
+
+      typedef _Result result_type;
+    };
+  struct __is_transparent;
+
+  template<typename _Tp = void>
+    struct plus;
+
+  template<typename _Tp = void>
+    struct minus;
+
+  template<typename _Tp = void>
+    struct multiplies;
+
+  template<typename _Tp = void>
+    struct divides;
+
+  template<typename _Tp = void>
+    struct modulus;
+
+  template<typename _Tp = void>
+    struct negate;
+
+
+
+  template<typename _Tp>
+    struct plus : public binary_function<_Tp, _Tp, _Tp>
+    {
+      constexpr
+      _Tp
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x + __y; }
+    };
+
+
+  template<typename _Tp>
+    struct minus : public binary_function<_Tp, _Tp, _Tp>
+    {
+      constexpr
+      _Tp
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x - __y; }
+    };
+
+
+  template<typename _Tp>
+    struct multiplies : public binary_function<_Tp, _Tp, _Tp>
+    {
+      constexpr
+      _Tp
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x * __y; }
+    };
+
+
+  template<typename _Tp>
+    struct divides : public binary_function<_Tp, _Tp, _Tp>
+    {
+      constexpr
+      _Tp
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x / __y; }
+    };
+
+
+  template<typename _Tp>
+    struct modulus : public binary_function<_Tp, _Tp, _Tp>
+    {
+      constexpr
+      _Tp
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x % __y; }
+    };
+
+
+  template<typename _Tp>
+    struct negate : public unary_function<_Tp, _Tp>
+    {
+      constexpr
+      _Tp
+      operator()(const _Tp& __x) const
+      { return -__x; }
+    };
+
+
+
+
+
+  template<>
+    struct plus<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) + std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) + std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) + std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+
+  template<>
+    struct minus<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) - std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) - std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) - std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+
+  template<>
+    struct multiplies<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) * std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) * std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) * std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+
+  template<>
+    struct divides<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) / std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) / std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) / std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+
+  template<>
+    struct modulus<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) % std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) % std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) % std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+
+  template<>
+    struct negate<void>
+    {
+      template <typename _Tp>
+ constexpr
+ auto
+ operator()(_Tp&& __t) const
+ noexcept(noexcept(-std::forward<_Tp>(__t)))
+ -> decltype(-std::forward<_Tp>(__t))
+ { return -std::forward<_Tp>(__t); }
+
+      typedef __is_transparent is_transparent;
+    };
+  template<typename _Tp = void>
+    struct equal_to;
+
+  template<typename _Tp = void>
+    struct not_equal_to;
+
+  template<typename _Tp = void>
+    struct greater;
+
+  template<typename _Tp = void>
+    struct less;
+
+  template<typename _Tp = void>
+    struct greater_equal;
+
+  template<typename _Tp = void>
+    struct less_equal;
+
+
+
+  template<typename _Tp>
+    struct equal_to : public binary_function<_Tp, _Tp, bool>
+    {
+      constexpr
+      bool
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x == __y; }
+    };
+
+
+  template<typename _Tp>
+    struct not_equal_to : public binary_function<_Tp, _Tp, bool>
+    {
+      constexpr
+      bool
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x != __y; }
+    };
+
+
+  template<typename _Tp>
+    struct greater : public binary_function<_Tp, _Tp, bool>
+    {
+      constexpr
+      bool
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x > __y; }
+    };
+
+
+  template<typename _Tp>
+    struct less : public binary_function<_Tp, _Tp, bool>
+    {
+      constexpr
+      bool
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x < __y; }
+    };
+
+
+  template<typename _Tp>
+    struct greater_equal : public binary_function<_Tp, _Tp, bool>
+    {
+      constexpr
+      bool
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x >= __y; }
+    };
+
+
+  template<typename _Tp>
+    struct less_equal : public binary_function<_Tp, _Tp, bool>
+    {
+      constexpr
+      bool
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x <= __y; }
+    };
+
+
+
+  template<>
+    struct equal_to<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) == std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) == std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) == std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+
+  template<>
+    struct not_equal_to<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) != std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) != std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) != std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+
+  template<>
+    struct greater<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) > std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) > std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) > std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+
+  template<>
+    struct less<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) < std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) < std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) < std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+
+  template<>
+    struct greater_equal<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) >= std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) >= std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) >= std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+
+  template<>
+    struct less_equal<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) <= std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) <= std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) <= std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+  template<typename _Tp = void>
+    struct logical_and;
+
+  template<typename _Tp = void>
+    struct logical_or;
+
+  template<typename _Tp = void>
+    struct logical_not;
+
+
+
+  template<typename _Tp>
+    struct logical_and : public binary_function<_Tp, _Tp, bool>
+    {
+      constexpr
+      bool
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x && __y; }
+    };
+
+
+  template<typename _Tp>
+    struct logical_or : public binary_function<_Tp, _Tp, bool>
+    {
+      constexpr
+      bool
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x || __y; }
+    };
+
+
+  template<typename _Tp>
+    struct logical_not : public unary_function<_Tp, bool>
+    {
+      constexpr
+      bool
+      operator()(const _Tp& __x) const
+      { return !__x; }
+    };
+
+
+
+  template<>
+    struct logical_and<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) && std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) && std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) && std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+
+  template<>
+    struct logical_or<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) || std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) || std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) || std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+
+  template<>
+    struct logical_not<void>
+    {
+      template <typename _Tp>
+ constexpr
+ auto
+ operator()(_Tp&& __t) const
+ noexcept(noexcept(!std::forward<_Tp>(__t)))
+ -> decltype(!std::forward<_Tp>(__t))
+ { return !std::forward<_Tp>(__t); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+
+
+
+  template<typename _Tp = void>
+    struct bit_and;
+
+  template<typename _Tp = void>
+    struct bit_or;
+
+  template<typename _Tp = void>
+    struct bit_xor;
+
+  template<typename _Tp = void>
+    struct bit_not;
+
+
+
+
+  template<typename _Tp>
+    struct bit_and : public binary_function<_Tp, _Tp, _Tp>
+    {
+      constexpr
+      _Tp
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x & __y; }
+    };
+
+  template<typename _Tp>
+    struct bit_or : public binary_function<_Tp, _Tp, _Tp>
+    {
+      constexpr
+      _Tp
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x | __y; }
+    };
+
+  template<typename _Tp>
+    struct bit_xor : public binary_function<_Tp, _Tp, _Tp>
+    {
+      constexpr
+      _Tp
+      operator()(const _Tp& __x, const _Tp& __y) const
+      { return __x ^ __y; }
+    };
+
+  template<typename _Tp>
+    struct bit_not : public unary_function<_Tp, _Tp>
+    {
+    constexpr
+      _Tp
+      operator()(const _Tp& __x) const
+      { return ~__x; }
+    };
+
+
+  template <>
+    struct bit_and<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) & std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) & std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) & std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+  template <>
+    struct bit_or<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) | std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) | std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) | std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+  template <>
+    struct bit_xor<void>
+    {
+      template <typename _Tp, typename _Up>
+ constexpr
+ auto
+ operator()(_Tp&& __t, _Up&& __u) const
+ noexcept(noexcept(std::forward<_Tp>(__t) ^ std::forward<_Up>(__u)))
+ -> decltype(std::forward<_Tp>(__t) ^ std::forward<_Up>(__u))
+ { return std::forward<_Tp>(__t) ^ std::forward<_Up>(__u); }
+
+      typedef __is_transparent is_transparent;
+    };
+
+  template <>
+    struct bit_not<void>
+    {
+      template <typename _Tp>
+ constexpr
+ auto
+ operator()(_Tp&& __t) const
+ noexcept(noexcept(~std::forward<_Tp>(__t)))
+ -> decltype(~std::forward<_Tp>(__t))
+ { return ~std::forward<_Tp>(__t); }
+
+      typedef __is_transparent is_transparent;
+    };
+  template<typename _Predicate>
+    class unary_negate
+    : public unary_function<typename _Predicate::argument_type, bool>
+    {
+    protected:
+      _Predicate _M_pred;
+
+    public:
+      constexpr
+      explicit
+      unary_negate(const _Predicate& __x) : _M_pred(__x) { }
+
+      constexpr
+      bool
+      operator()(const typename _Predicate::argument_type& __x) const
+      { return !_M_pred(__x); }
+    };
+
+
+  template<typename _Predicate>
+    constexpr
+    inline unary_negate<_Predicate>
+    not1(const _Predicate& __pred)
+    { return unary_negate<_Predicate>(__pred); }
+
+
+  template<typename _Predicate>
+    class binary_negate
+    : public binary_function<typename _Predicate::first_argument_type,
+        typename _Predicate::second_argument_type, bool>
+    {
+    protected:
+      _Predicate _M_pred;
+
+    public:
+      constexpr
+      explicit
+      binary_negate(const _Predicate& __x) : _M_pred(__x) { }
+
+      constexpr
+      bool
+      operator()(const typename _Predicate::first_argument_type& __x,
+   const typename _Predicate::second_argument_type& __y) const
+      { return !_M_pred(__x, __y); }
+    };
+
+
+  template<typename _Predicate>
+    constexpr
+    inline binary_negate<_Predicate>
+    not2(const _Predicate& __pred)
+    { return binary_negate<_Predicate>(__pred); }
+  template<typename _Arg, typename _Result>
+    class pointer_to_unary_function : public unary_function<_Arg, _Result>
+    {
+    protected:
+      _Result (*_M_ptr)(_Arg);
+
+    public:
+      pointer_to_unary_function() { }
+
+      explicit
+      pointer_to_unary_function(_Result (*__x)(_Arg))
+      : _M_ptr(__x) { }
+
+      _Result
+      operator()(_Arg __x) const
+      { return _M_ptr(__x); }
+    };
+
+
+  template<typename _Arg, typename _Result>
+    inline pointer_to_unary_function<_Arg, _Result>
+    ptr_fun(_Result (*__x)(_Arg))
+    { return pointer_to_unary_function<_Arg, _Result>(__x); }
+
+
+  template<typename _Arg1, typename _Arg2, typename _Result>
+    class pointer_to_binary_function
+    : public binary_function<_Arg1, _Arg2, _Result>
+    {
+    protected:
+      _Result (*_M_ptr)(_Arg1, _Arg2);
+
+    public:
+      pointer_to_binary_function() { }
+
+      explicit
+      pointer_to_binary_function(_Result (*__x)(_Arg1, _Arg2))
+      : _M_ptr(__x) { }
+
+      _Result
+      operator()(_Arg1 __x, _Arg2 __y) const
+      { return _M_ptr(__x, __y); }
+    };
+
+
+  template<typename _Arg1, typename _Arg2, typename _Result>
+    inline pointer_to_binary_function<_Arg1, _Arg2, _Result>
+    ptr_fun(_Result (*__x)(_Arg1, _Arg2))
+    { return pointer_to_binary_function<_Arg1, _Arg2, _Result>(__x); }
+
+
+  template<typename _Tp>
+    struct _Identity
+    : public unary_function<_Tp, _Tp>
+    {
+      _Tp&
+      operator()(_Tp& __x) const
+      { return __x; }
+
+      const _Tp&
+      operator()(const _Tp& __x) const
+      { return __x; }
+    };
+
+
+  template<typename _Tp> struct _Identity<const _Tp> : _Identity<_Tp> { };
+
+  template<typename _Pair>
+    struct _Select1st
+    : public unary_function<_Pair, typename _Pair::first_type>
+    {
+      typename _Pair::first_type&
+      operator()(_Pair& __x) const
+      { return __x.first; }
+
+      const typename _Pair::first_type&
+      operator()(const _Pair& __x) const
+      { return __x.first; }
+
+
+      template<typename _Pair2>
+        typename _Pair2::first_type&
+        operator()(_Pair2& __x) const
+        { return __x.first; }
+
+      template<typename _Pair2>
+        const typename _Pair2::first_type&
+        operator()(const _Pair2& __x) const
+        { return __x.first; }
+
+    };
+
+  template<typename _Pair>
+    struct _Select2nd
+    : public unary_function<_Pair, typename _Pair::second_type>
+    {
+      typename _Pair::second_type&
+      operator()(_Pair& __x) const
+      { return __x.second; }
+
+      const typename _Pair::second_type&
+      operator()(const _Pair& __x) const
+      { return __x.second; }
+    };
+  template<typename _Ret, typename _Tp>
+    class mem_fun_t : public unary_function<_Tp*, _Ret>
+    {
+    public:
+      explicit
+      mem_fun_t(_Ret (_Tp::*__pf)())
+      : _M_f(__pf) { }
+
+      _Ret
+      operator()(_Tp* __p) const
+      { return (__p->*_M_f)(); }
+
+    private:
+      _Ret (_Tp::*_M_f)();
+    };
+
+
+
+  template<typename _Ret, typename _Tp>
+    class const_mem_fun_t : public unary_function<const _Tp*, _Ret>
+    {
+    public:
+      explicit
+      const_mem_fun_t(_Ret (_Tp::*__pf)() const)
+      : _M_f(__pf) { }
+
+      _Ret
+      operator()(const _Tp* __p) const
+      { return (__p->*_M_f)(); }
+
+    private:
+      _Ret (_Tp::*_M_f)() const;
+    };
+
+
+
+  template<typename _Ret, typename _Tp>
+    class mem_fun_ref_t : public unary_function<_Tp, _Ret>
+    {
+    public:
+      explicit
+      mem_fun_ref_t(_Ret (_Tp::*__pf)())
+      : _M_f(__pf) { }
+
+      _Ret
+      operator()(_Tp& __r) const
+      { return (__r.*_M_f)(); }
+
+    private:
+      _Ret (_Tp::*_M_f)();
+  };
+
+
+
+  template<typename _Ret, typename _Tp>
+    class const_mem_fun_ref_t : public unary_function<_Tp, _Ret>
+    {
+    public:
+      explicit
+      const_mem_fun_ref_t(_Ret (_Tp::*__pf)() const)
+      : _M_f(__pf) { }
+
+      _Ret
+      operator()(const _Tp& __r) const
+      { return (__r.*_M_f)(); }
+
+    private:
+      _Ret (_Tp::*_M_f)() const;
+    };
+
+
+
+  template<typename _Ret, typename _Tp, typename _Arg>
+    class mem_fun1_t : public binary_function<_Tp*, _Arg, _Ret>
+    {
+    public:
+      explicit
+      mem_fun1_t(_Ret (_Tp::*__pf)(_Arg))
+      : _M_f(__pf) { }
+
+      _Ret
+      operator()(_Tp* __p, _Arg __x) const
+      { return (__p->*_M_f)(__x); }
+
+    private:
+      _Ret (_Tp::*_M_f)(_Arg);
+    };
+
+
+
+  template<typename _Ret, typename _Tp, typename _Arg>
+    class const_mem_fun1_t : public binary_function<const _Tp*, _Arg, _Ret>
+    {
+    public:
+      explicit
+      const_mem_fun1_t(_Ret (_Tp::*__pf)(_Arg) const)
+      : _M_f(__pf) { }
+
+      _Ret
+      operator()(const _Tp* __p, _Arg __x) const
+      { return (__p->*_M_f)(__x); }
+
+    private:
+      _Ret (_Tp::*_M_f)(_Arg) const;
+    };
+
+
+
+  template<typename _Ret, typename _Tp, typename _Arg>
+    class mem_fun1_ref_t : public binary_function<_Tp, _Arg, _Ret>
+    {
+    public:
+      explicit
+      mem_fun1_ref_t(_Ret (_Tp::*__pf)(_Arg))
+      : _M_f(__pf) { }
+
+      _Ret
+      operator()(_Tp& __r, _Arg __x) const
+      { return (__r.*_M_f)(__x); }
+
+    private:
+      _Ret (_Tp::*_M_f)(_Arg);
+    };
+
+
+
+  template<typename _Ret, typename _Tp, typename _Arg>
+    class const_mem_fun1_ref_t : public binary_function<_Tp, _Arg, _Ret>
+    {
+    public:
+      explicit
+      const_mem_fun1_ref_t(_Ret (_Tp::*__pf)(_Arg) const)
+      : _M_f(__pf) { }
+
+      _Ret
+      operator()(const _Tp& __r, _Arg __x) const
+      { return (__r.*_M_f)(__x); }
+
+    private:
+      _Ret (_Tp::*_M_f)(_Arg) const;
+    };
+
+
+
+  template<typename _Ret, typename _Tp>
+    inline mem_fun_t<_Ret, _Tp>
+    mem_fun(_Ret (_Tp::*__f)())
+    { return mem_fun_t<_Ret, _Tp>(__f); }
+
+  template<typename _Ret, typename _Tp>
+    inline const_mem_fun_t<_Ret, _Tp>
+    mem_fun(_Ret (_Tp::*__f)() const)
+    { return const_mem_fun_t<_Ret, _Tp>(__f); }
+
+  template<typename _Ret, typename _Tp>
+    inline mem_fun_ref_t<_Ret, _Tp>
+    mem_fun_ref(_Ret (_Tp::*__f)())
+    { return mem_fun_ref_t<_Ret, _Tp>(__f); }
+
+  template<typename _Ret, typename _Tp>
+    inline const_mem_fun_ref_t<_Ret, _Tp>
+    mem_fun_ref(_Ret (_Tp::*__f)() const)
+    { return const_mem_fun_ref_t<_Ret, _Tp>(__f); }
+
+  template<typename _Ret, typename _Tp, typename _Arg>
+    inline mem_fun1_t<_Ret, _Tp, _Arg>
+    mem_fun(_Ret (_Tp::*__f)(_Arg))
+    { return mem_fun1_t<_Ret, _Tp, _Arg>(__f); }
+
+  template<typename _Ret, typename _Tp, typename _Arg>
+    inline const_mem_fun1_t<_Ret, _Tp, _Arg>
+    mem_fun(_Ret (_Tp::*__f)(_Arg) const)
+    { return const_mem_fun1_t<_Ret, _Tp, _Arg>(__f); }
+
+  template<typename _Ret, typename _Tp, typename _Arg>
+    inline mem_fun1_ref_t<_Ret, _Tp, _Arg>
+    mem_fun_ref(_Ret (_Tp::*__f)(_Arg))
+    { return mem_fun1_ref_t<_Ret, _Tp, _Arg>(__f); }
+
+  template<typename _Ret, typename _Tp, typename _Arg>
+    inline const_mem_fun1_ref_t<_Ret, _Tp, _Arg>
+    mem_fun_ref(_Ret (_Tp::*__f)(_Arg) const)
+    { return const_mem_fun1_ref_t<_Ret, _Tp, _Arg>(__f); }
+
+
+
+
+}
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _Operation>
+    class binder1st
+    : public unary_function<typename _Operation::second_argument_type,
+       typename _Operation::result_type>
+    {
+    protected:
+      _Operation op;
+      typename _Operation::first_argument_type value;
+
+    public:
+      binder1st(const _Operation& __x,
+  const typename _Operation::first_argument_type& __y)
+      : op(__x), value(__y) { }
+
+      typename _Operation::result_type
+      operator()(const typename _Operation::second_argument_type& __x) const
+      { return op(value, __x); }
+
+
+
+      typename _Operation::result_type
+      operator()(typename _Operation::second_argument_type& __x) const
+      { return op(value, __x); }
+    } __attribute__ ((__deprecated__));
+
+
+  template<typename _Operation, typename _Tp>
+    inline binder1st<_Operation>
+    bind1st(const _Operation& __fn, const _Tp& __x)
+    {
+      typedef typename _Operation::first_argument_type _Arg1_type;
+      return binder1st<_Operation>(__fn, _Arg1_type(__x));
+    }
+
+
+  template<typename _Operation>
+    class binder2nd
+    : public unary_function<typename _Operation::first_argument_type,
+       typename _Operation::result_type>
+    {
+    protected:
+      _Operation op;
+      typename _Operation::second_argument_type value;
+
+    public:
+      binder2nd(const _Operation& __x,
+  const typename _Operation::second_argument_type& __y)
+      : op(__x), value(__y) { }
+
+      typename _Operation::result_type
+      operator()(const typename _Operation::first_argument_type& __x) const
+      { return op(__x, value); }
+
+
+
+      typename _Operation::result_type
+      operator()(typename _Operation::first_argument_type& __x) const
+      { return op(__x, value); }
+    } __attribute__ ((__deprecated__));
+
+
+  template<typename _Operation, typename _Tp>
+    inline binder2nd<_Operation>
+    bind2nd(const _Operation& __fn, const _Tp& __x)
+    {
+      typedef typename _Operation::second_argument_type _Arg2_type;
+      return binder2nd<_Operation>(__fn, _Arg2_type(__x));
+    }
+
+
+
+}
+
+
+
+       
+
+
+       
+
+
+
+
+
+
+
+
+namespace std
+{
+
+  template<class _E>
+    class initializer_list
+    {
+    public:
+      typedef _E value_type;
+      typedef const _E& reference;
+      typedef const _E& const_reference;
+      typedef size_t size_type;
+      typedef const _E* iterator;
+      typedef const _E* const_iterator;
+
+    private:
+      iterator _M_array;
+      size_type _M_len;
+
+
+      constexpr initializer_list(const_iterator __a, size_type __l)
+      : _M_array(__a), _M_len(__l) { }
+
+    public:
+      constexpr initializer_list() noexcept
+      : _M_array(0), _M_len(0) { }
+
+
+      constexpr size_type
+      size() const noexcept { return _M_len; }
+
+
+      constexpr const_iterator
+      begin() const noexcept { return _M_array; }
+
+
+      constexpr const_iterator
+      end() const noexcept { return begin() + size(); }
+    };
+
+
+
+
+
+
+  template<class _Tp>
+    constexpr const _Tp*
+    begin(initializer_list<_Tp> __ils) noexcept
+    { return __ils.begin(); }
+
+
+
+
+
+
+  template<class _Tp>
+    constexpr const _Tp*
+    end(initializer_list<_Tp> __ils) noexcept
+    { return __ils.end(); }
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+
+  template<typename _Container>
+    inline auto
+    begin(_Container& __cont) -> decltype(__cont.begin())
+    { return __cont.begin(); }
+
+
+
+
+
+
+  template<typename _Container>
+    inline auto
+    begin(const _Container& __cont) -> decltype(__cont.begin())
+    { return __cont.begin(); }
+
+
+
+
+
+
+  template<typename _Container>
+    inline auto
+    end(_Container& __cont) -> decltype(__cont.end())
+    { return __cont.end(); }
+
+
+
+
+
+
+  template<typename _Container>
+    inline auto
+    end(const _Container& __cont) -> decltype(__cont.end())
+    { return __cont.end(); }
+
+
+
+
+
+  template<typename _Tp, size_t _Nm>
+    inline constexpr _Tp*
+    begin(_Tp (&__arr)[_Nm])
+    { return __arr; }
+
+
+
+
+
+
+  template<typename _Tp, size_t _Nm>
+    inline constexpr _Tp*
+    end(_Tp (&__arr)[_Nm])
+    { return __arr + _Nm; }
+
+
+
+  template<typename _Tp> class valarray;
+
+  template<typename _Tp> _Tp* begin(valarray<_Tp>&);
+  template<typename _Tp> const _Tp* begin(const valarray<_Tp>&);
+  template<typename _Tp> _Tp* end(valarray<_Tp>&);
+  template<typename _Tp> const _Tp* end(const valarray<_Tp>&);
+
+
+
+
+
+
+  template<typename _Container>
+    inline constexpr auto
+    cbegin(const _Container& __cont) noexcept(noexcept(std::begin(__cont)))
+      -> decltype(std::begin(__cont))
+    { return std::begin(__cont); }
+
+
+
+
+
+
+  template<typename _Container>
+    inline constexpr auto
+    cend(const _Container& __cont) noexcept(noexcept(std::end(__cont)))
+      -> decltype(std::end(__cont))
+    { return std::end(__cont); }
+
+
+
+
+
+
+  template<typename _Container>
+    inline auto
+    rbegin(_Container& __cont) -> decltype(__cont.rbegin())
+    { return __cont.rbegin(); }
+
+
+
+
+
+
+  template<typename _Container>
+    inline auto
+    rbegin(const _Container& __cont) -> decltype(__cont.rbegin())
+    { return __cont.rbegin(); }
+
+
+
+
+
+
+  template<typename _Container>
+    inline auto
+    rend(_Container& __cont) -> decltype(__cont.rend())
+    { return __cont.rend(); }
+
+
+
+
+
+
+  template<typename _Container>
+    inline auto
+    rend(const _Container& __cont) -> decltype(__cont.rend())
+    { return __cont.rend(); }
+
+
+
+
+
+
+  template<typename _Tp, size_t _Nm>
+    inline reverse_iterator<_Tp*>
+    rbegin(_Tp (&__arr)[_Nm])
+    { return reverse_iterator<_Tp*>(__arr + _Nm); }
+
+
+
+
+
+
+  template<typename _Tp, size_t _Nm>
+    inline reverse_iterator<_Tp*>
+    rend(_Tp (&__arr)[_Nm])
+    { return reverse_iterator<_Tp*>(__arr); }
+
+
+
+
+
+
+  template<typename _Tp>
+    inline reverse_iterator<const _Tp*>
+    rbegin(initializer_list<_Tp> __il)
+    { return reverse_iterator<const _Tp*>(__il.end()); }
+
+
+
+
+
+
+  template<typename _Tp>
+    inline reverse_iterator<const _Tp*>
+    rend(initializer_list<_Tp> __il)
+    { return reverse_iterator<const _Tp*>(__il.begin()); }
+
+
+
+
+
+
+  template<typename _Container>
+    inline auto
+    crbegin(const _Container& __cont) -> decltype(std::rbegin(__cont))
+    { return std::rbegin(__cont); }
+
+
+
+
+
+
+  template<typename _Container>
+    inline auto
+    crend(const _Container& __cont) -> decltype(std::rend(__cont))
+    { return std::rend(__cont); }
+
+}
+       
+
+
+       
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  struct __allocator_traits_base
+  {
+    template<typename _Tp, typename _Up, typename = void>
+      struct __rebind : __replace_first_arg<_Tp, _Up> { };
+
+    template<typename _Tp, typename _Up>
+      struct __rebind<_Tp, _Up,
+        __void_t<typename _Tp::template rebind<_Up>::other>>
+      { using type = typename _Tp::template rebind<_Up>::other; };
+
+  protected:
+    template<typename _Tp>
+      using __pointer = typename _Tp::pointer;
+    template<typename _Tp>
+      using __c_pointer = typename _Tp::const_pointer;
+    template<typename _Tp>
+      using __v_pointer = typename _Tp::void_pointer;
+    template<typename _Tp>
+      using __cv_pointer = typename _Tp::const_void_pointer;
+    template<typename _Tp>
+      using __pocca = typename _Tp::propagate_on_container_copy_assignment;
+    template<typename _Tp>
+      using __pocma = typename _Tp::propagate_on_container_move_assignment;
+    template<typename _Tp>
+      using __pocs = typename _Tp::propagate_on_container_swap;
+    template<typename _Tp>
+      using __equal = typename _Tp::is_always_equal;
+  };
+
+  template<typename _Alloc, typename _Up>
+    using __alloc_rebind
+      = typename __allocator_traits_base::template __rebind<_Alloc, _Up>::type;
+
+
+
+
+
+  template<typename _Alloc>
+    struct allocator_traits : __allocator_traits_base
+    {
+
+      typedef _Alloc allocator_type;
+
+      typedef typename _Alloc::value_type value_type;
+
+
+
+
+
+
+      using pointer = __detected_or_t<value_type*, __pointer, _Alloc>;
+
+    private:
+
+      template<template<typename> class _Func, typename _Tp, typename = void>
+ struct _Ptr
+ {
+   using type = typename pointer_traits<pointer>::template rebind<_Tp>;
+ };
+
+      template<template<typename> class _Func, typename _Tp>
+ struct _Ptr<_Func, _Tp, __void_t<_Func<_Alloc>>>
+ {
+   using type = _Func<_Alloc>;
+ };
+
+
+      template<typename _A2, typename _PtrT, typename = void>
+ struct _Diff
+ { using type = typename pointer_traits<_PtrT>::difference_type; };
+
+      template<typename _A2, typename _PtrT>
+ struct _Diff<_A2, _PtrT, __void_t<typename _A2::difference_type>>
+ { using type = typename _A2::difference_type; };
+
+
+      template<typename _A2, typename _DiffT, typename = void>
+ struct _Size : make_unsigned<_DiffT> { };
+
+      template<typename _A2, typename _DiffT>
+ struct _Size<_A2, _DiffT, __void_t<typename _A2::size_type>>
+ { using type = typename _A2::size_type; };
+
+    public:
+
+
+
+
+
+
+      using const_pointer = typename _Ptr<__c_pointer, const value_type>::type;
+
+
+
+
+
+
+
+      using void_pointer = typename _Ptr<__v_pointer, void>::type;
+
+
+
+
+
+
+
+      using const_void_pointer = typename _Ptr<__cv_pointer, const void>::type;
+
+
+
+
+
+
+
+      using difference_type = typename _Diff<_Alloc, pointer>::type;
+
+
+
+
+
+
+
+      using size_type = typename _Size<_Alloc, difference_type>::type;
+
+
+
+
+
+
+
+      using propagate_on_container_copy_assignment
+ = __detected_or_t<false_type, __pocca, _Alloc>;
+
+
+
+
+
+
+
+      using propagate_on_container_move_assignment
+ = __detected_or_t<false_type, __pocma, _Alloc>;
+
+
+
+
+
+
+
+      using propagate_on_container_swap
+ = __detected_or_t<false_type, __pocs, _Alloc>;
+
+
+
+
+
+
+
+      using is_always_equal
+ = __detected_or_t<typename is_empty<_Alloc>::type, __equal, _Alloc>;
+
+      template<typename _Tp>
+ using rebind_alloc = __alloc_rebind<_Alloc, _Tp>;
+      template<typename _Tp>
+ using rebind_traits = allocator_traits<rebind_alloc<_Tp>>;
+
+    private:
+      template<typename _Alloc2>
+ static auto
+ _S_allocate(_Alloc2& __a, size_type __n, const_void_pointer __hint, int)
+ -> decltype(__a.allocate(__n, __hint))
+ { return __a.allocate(__n, __hint); }
+
+      template<typename _Alloc2>
+ static pointer
+ _S_allocate(_Alloc2& __a, size_type __n, const_void_pointer, ...)
+ { return __a.allocate(__n); }
+
+      template<typename _Tp, typename... _Args>
+ struct __construct_helper
+ {
+   template<typename _Alloc2,
+     typename = decltype(std::declval<_Alloc2*>()->construct(
+    std::declval<_Tp*>(), std::declval<_Args>()...))>
+     static true_type __test(int);
+
+   template<typename>
+     static false_type __test(...);
+
+   using type = decltype(__test<_Alloc>(0));
+ };
+
+      template<typename _Tp, typename... _Args>
+ using __has_construct
+   = typename __construct_helper<_Tp, _Args...>::type;
+
+      template<typename _Tp, typename... _Args>
+ static _Require<__has_construct<_Tp, _Args...>>
+ _S_construct(_Alloc& __a, _Tp* __p, _Args&&... __args)
+ { __a.construct(__p, std::forward<_Args>(__args)...); }
+
+      template<typename _Tp, typename... _Args>
+ static
+ _Require<__and_<__not_<__has_construct<_Tp, _Args...>>,
+          is_constructible<_Tp, _Args...>>>
+ _S_construct(_Alloc&, _Tp* __p, _Args&&... __args)
+ { ::new((void*)__p) _Tp(std::forward<_Args>(__args)...); }
+
+      template<typename _Alloc2, typename _Tp>
+ static auto
+ _S_destroy(_Alloc2& __a, _Tp* __p, int)
+ -> decltype(__a.destroy(__p))
+ { __a.destroy(__p); }
+
+      template<typename _Alloc2, typename _Tp>
+ static void
+ _S_destroy(_Alloc2&, _Tp* __p, ...)
+ { __p->~_Tp(); }
+
+      template<typename _Alloc2>
+ static auto
+ _S_max_size(_Alloc2& __a, int)
+ -> decltype(__a.max_size())
+ { return __a.max_size(); }
+
+      template<typename _Alloc2>
+ static size_type
+ _S_max_size(_Alloc2&, ...)
+ {
+
+
+   return __gnu_cxx::__numeric_traits<size_type>::__max
+     / sizeof(value_type);
+ }
+
+      template<typename _Alloc2>
+ static auto
+ _S_select(_Alloc2& __a, int)
+ -> decltype(__a.select_on_container_copy_construction())
+ { return __a.select_on_container_copy_construction(); }
+
+      template<typename _Alloc2>
+ static _Alloc2
+ _S_select(_Alloc2& __a, ...)
+ { return __a; }
+
+    public:
+      static pointer
+      allocate(_Alloc& __a, size_type __n)
+      { return __a.allocate(__n); }
+      static pointer
+      allocate(_Alloc& __a, size_type __n, const_void_pointer __hint)
+      { return _S_allocate(__a, __n, __hint, 0); }
+      static void
+      deallocate(_Alloc& __a, pointer __p, size_type __n)
+      { __a.deallocate(__p, __n); }
+      template<typename _Tp, typename... _Args>
+ static auto construct(_Alloc& __a, _Tp* __p, _Args&&... __args)
+ -> decltype(_S_construct(__a, __p, std::forward<_Args>(__args)...))
+ { _S_construct(__a, __p, std::forward<_Args>(__args)...); }
+      template<typename _Tp>
+ static void destroy(_Alloc& __a, _Tp* __p)
+ { _S_destroy(__a, __p, 0); }
+      static size_type max_size(const _Alloc& __a) noexcept
+      { return _S_max_size(__a, 0); }
+      static _Alloc
+      select_on_container_copy_construction(const _Alloc& __rhs)
+      { return _S_select(__rhs, 0); }
+    };
+
+
+  template<typename _Tp>
+    struct allocator_traits<allocator<_Tp>>
+    {
+
+      using allocator_type = allocator<_Tp>;
+
+      using value_type = _Tp;
+
+
+      using pointer = _Tp*;
+
+
+      using const_pointer = const _Tp*;
+
+
+      using void_pointer = void*;
+
+
+      using const_void_pointer = const void*;
+
+
+      using difference_type = std::ptrdiff_t;
+
+
+      using size_type = std::size_t;
+
+
+      using propagate_on_container_copy_assignment = false_type;
+
+
+      using propagate_on_container_move_assignment = true_type;
+
+
+      using propagate_on_container_swap = false_type;
+
+
+      using is_always_equal = true_type;
+
+      template<typename _Up>
+ using rebind_alloc = allocator<_Up>;
+
+      template<typename _Up>
+ using rebind_traits = allocator_traits<allocator<_Up>>;
+      static pointer
+      allocate(allocator_type& __a, size_type __n)
+      { return __a.allocate(__n); }
+      static pointer
+      allocate(allocator_type& __a, size_type __n, const_void_pointer __hint)
+      { return __a.allocate(__n, __hint); }
+      static void
+      deallocate(allocator_type& __a, pointer __p, size_type __n)
+      { __a.deallocate(__p, __n); }
+      template<typename _Up, typename... _Args>
+ static void
+ construct(allocator_type& __a, _Up* __p, _Args&&... __args)
+ { __a.construct(__p, std::forward<_Args>(__args)...); }
+      template<typename _Up>
+ static void
+ destroy(allocator_type& __a, _Up* __p)
+ { __a.destroy(__p); }
+
+
+
+
+
+
+      static size_type
+      max_size(const allocator_type& __a) noexcept
+      { return __a.max_size(); }
+
+
+
+
+
+
+      static allocator_type
+      select_on_container_copy_construction(const allocator_type& __rhs)
+      { return __rhs; }
+    };
+
+
+  template<typename _Alloc>
+    inline void
+    __do_alloc_on_copy(_Alloc& __one, const _Alloc& __two, true_type)
+    { __one = __two; }
+
+  template<typename _Alloc>
+    inline void
+    __do_alloc_on_copy(_Alloc&, const _Alloc&, false_type)
+    { }
+
+  template<typename _Alloc>
+    inline void __alloc_on_copy(_Alloc& __one, const _Alloc& __two)
+    {
+      typedef allocator_traits<_Alloc> __traits;
+      typedef typename __traits::propagate_on_container_copy_assignment __pocca;
+      __do_alloc_on_copy(__one, __two, __pocca());
+    }
+
+  template<typename _Alloc>
+    inline _Alloc __alloc_on_copy(const _Alloc& __a)
+    {
+      typedef allocator_traits<_Alloc> __traits;
+      return __traits::select_on_container_copy_construction(__a);
+    }
+
+  template<typename _Alloc>
+    inline void __do_alloc_on_move(_Alloc& __one, _Alloc& __two, true_type)
+    { __one = std::move(__two); }
+
+  template<typename _Alloc>
+    inline void __do_alloc_on_move(_Alloc&, _Alloc&, false_type)
+    { }
+
+  template<typename _Alloc>
+    inline void __alloc_on_move(_Alloc& __one, _Alloc& __two)
+    {
+      typedef allocator_traits<_Alloc> __traits;
+      typedef typename __traits::propagate_on_container_move_assignment __pocma;
+      __do_alloc_on_move(__one, __two, __pocma());
+    }
+
+  template<typename _Alloc>
+    inline void __do_alloc_on_swap(_Alloc& __one, _Alloc& __two, true_type)
+    {
+      using std::swap;
+      swap(__one, __two);
+    }
+
+  template<typename _Alloc>
+    inline void __do_alloc_on_swap(_Alloc&, _Alloc&, false_type)
+    { }
+
+  template<typename _Alloc>
+    inline void __alloc_on_swap(_Alloc& __one, _Alloc& __two)
+    {
+      typedef allocator_traits<_Alloc> __traits;
+      typedef typename __traits::propagate_on_container_swap __pocs;
+      __do_alloc_on_swap(__one, __two, __pocs());
+    }
+
+  template<typename _Alloc>
+    class __is_copy_insertable_impl
+    {
+      typedef allocator_traits<_Alloc> _Traits;
+
+      template<typename _Up, typename
+        = decltype(_Traits::construct(std::declval<_Alloc&>(),
+          std::declval<_Up*>(),
+          std::declval<const _Up&>()))>
+ static true_type
+ _M_select(int);
+
+      template<typename _Up>
+ static false_type
+ _M_select(...);
+
+    public:
+      typedef decltype(_M_select<typename _Alloc::value_type>(0)) type;
+    };
+
+
+  template<typename _Alloc>
+    struct __is_copy_insertable
+    : __is_copy_insertable_impl<_Alloc>::type
+    { };
+
+
+  template<typename _Tp>
+    struct __is_copy_insertable<allocator<_Tp>>
+    : is_copy_constructible<_Tp>
+    { };
+
+
+
+  template<typename _Alloc, typename = void>
+    struct __is_allocator : false_type { };
+
+  template<typename _Alloc>
+    struct __is_allocator<_Alloc,
+      __void_t<typename _Alloc::value_type,
+        decltype(std::declval<_Alloc&>().allocate(size_t{}))>>
+    : true_type { };
+
+  template<typename _Alloc>
+    using _RequireAllocator
+      = typename enable_if<__is_allocator<_Alloc>::value, _Alloc>::type;
+
+
+
+}
+
+
+
+
+namespace __gnu_cxx __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+template<typename _Alloc, typename = typename _Alloc::value_type>
+  struct __alloc_traits
+
+  : std::allocator_traits<_Alloc>
+
+  {
+    typedef _Alloc allocator_type;
+
+    typedef std::allocator_traits<_Alloc> _Base_type;
+    typedef typename _Base_type::value_type value_type;
+    typedef typename _Base_type::pointer pointer;
+    typedef typename _Base_type::const_pointer const_pointer;
+    typedef typename _Base_type::size_type size_type;
+    typedef typename _Base_type::difference_type difference_type;
+
+    typedef value_type& reference;
+    typedef const value_type& const_reference;
+    using _Base_type::allocate;
+    using _Base_type::deallocate;
+    using _Base_type::construct;
+    using _Base_type::destroy;
+    using _Base_type::max_size;
+
+  private:
+    template<typename _Ptr>
+      using __is_custom_pointer
+ = std::__and_<std::is_same<pointer, _Ptr>,
+        std::__not_<std::is_pointer<_Ptr>>>;
+
+  public:
+
+    template<typename _Ptr, typename... _Args>
+      static typename std::enable_if<__is_custom_pointer<_Ptr>::value>::type
+      construct(_Alloc& __a, _Ptr __p, _Args&&... __args)
+      {
+ _Base_type::construct(__a, std::__to_address(__p),
+         std::forward<_Args>(__args)...);
+      }
+
+
+    template<typename _Ptr>
+      static typename std::enable_if<__is_custom_pointer<_Ptr>::value>::type
+      destroy(_Alloc& __a, _Ptr __p)
+      { _Base_type::destroy(__a, std::__to_address(__p)); }
+
+    static _Alloc _S_select_on_copy(const _Alloc& __a)
+    { return _Base_type::select_on_container_copy_construction(__a); }
+
+    static void _S_on_swap(_Alloc& __a, _Alloc& __b)
+    { std::__alloc_on_swap(__a, __b); }
+
+    static constexpr bool _S_propagate_on_copy_assign()
+    { return _Base_type::propagate_on_container_copy_assignment::value; }
+
+    static constexpr bool _S_propagate_on_move_assign()
+    { return _Base_type::propagate_on_container_move_assignment::value; }
+
+    static constexpr bool _S_propagate_on_swap()
+    { return _Base_type::propagate_on_container_swap::value; }
+
+    static constexpr bool _S_always_equal()
+    { return _Base_type::is_always_equal::value; }
+
+    static constexpr bool _S_nothrow_move()
+    { return _S_propagate_on_move_assign() || _S_always_equal(); }
+
+    template<typename _Tp>
+      struct rebind
+      { typedef typename _Base_type::template rebind_alloc<_Tp> other; };
+  };
+
+
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+namespace __cxx11 {
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    class basic_string
+    {
+      typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template
+ rebind<_CharT>::other _Char_alloc_type;
+      typedef __gnu_cxx::__alloc_traits<_Char_alloc_type> _Alloc_traits;
+
+
+    public:
+      typedef _Traits traits_type;
+      typedef typename _Traits::char_type value_type;
+      typedef _Char_alloc_type allocator_type;
+      typedef typename _Alloc_traits::size_type size_type;
+      typedef typename _Alloc_traits::difference_type difference_type;
+      typedef typename _Alloc_traits::reference reference;
+      typedef typename _Alloc_traits::const_reference const_reference;
+      typedef typename _Alloc_traits::pointer pointer;
+      typedef typename _Alloc_traits::const_pointer const_pointer;
+      typedef __gnu_cxx::__normal_iterator<pointer, basic_string> iterator;
+      typedef __gnu_cxx::__normal_iterator<const_pointer, basic_string>
+       const_iterator;
+      typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+      typedef std::reverse_iterator<iterator> reverse_iterator;
+
+
+      static const size_type npos = static_cast<size_type>(-1);
+
+    private:
+
+
+
+
+      typedef const_iterator __const_iterator;
+      struct _Alloc_hider : allocator_type
+      {
+
+
+
+
+ _Alloc_hider(pointer __dat, const _Alloc& __a)
+ : allocator_type(__a), _M_p(__dat) { }
+
+ _Alloc_hider(pointer __dat, _Alloc&& __a = _Alloc())
+ : allocator_type(std::move(__a)), _M_p(__dat) { }
+
+
+ pointer _M_p;
+      };
+
+      _Alloc_hider _M_dataplus;
+      size_type _M_string_length;
+
+      enum { _S_local_capacity = 15 / sizeof(_CharT) };
+
+      union
+      {
+ _CharT _M_local_buf[_S_local_capacity + 1];
+ size_type _M_allocated_capacity;
+      };
+
+      void
+      _M_data(pointer __p)
+      { _M_dataplus._M_p = __p; }
+
+      void
+      _M_length(size_type __length)
+      { _M_string_length = __length; }
+
+      pointer
+      _M_data() const
+      { return _M_dataplus._M_p; }
+
+      pointer
+      _M_local_data()
+      {
+
+ return std::pointer_traits<pointer>::pointer_to(*_M_local_buf);
+
+
+
+      }
+
+      const_pointer
+      _M_local_data() const
+      {
+
+ return std::pointer_traits<const_pointer>::pointer_to(*_M_local_buf);
+
+
+
+      }
+
+      void
+      _M_capacity(size_type __capacity)
+      { _M_allocated_capacity = __capacity; }
+
+      void
+      _M_set_length(size_type __n)
+      {
+ _M_length(__n);
+ traits_type::assign(_M_data()[__n], _CharT());
+      }
+
+      bool
+      _M_is_local() const
+      { return _M_data() == _M_local_data(); }
+
+
+      pointer
+      _M_create(size_type&, size_type);
+
+      void
+      _M_dispose()
+      {
+ if (!_M_is_local())
+   _M_destroy(_M_allocated_capacity);
+      }
+
+      void
+      _M_destroy(size_type __size) throw()
+      { _Alloc_traits::deallocate(_M_get_allocator(), _M_data(), __size + 1); }
+
+
+
+      template<typename _InIterator>
+        void
+        _M_construct_aux(_InIterator __beg, _InIterator __end,
+    std::__false_type)
+ {
+          typedef typename iterator_traits<_InIterator>::iterator_category _Tag;
+          _M_construct(__beg, __end, _Tag());
+ }
+
+
+
+      template<typename _Integer>
+        void
+        _M_construct_aux(_Integer __beg, _Integer __end, std::__true_type)
+ { _M_construct_aux_2(static_cast<size_type>(__beg), __end); }
+
+      void
+      _M_construct_aux_2(size_type __req, _CharT __c)
+      { _M_construct(__req, __c); }
+
+      template<typename _InIterator>
+        void
+        _M_construct(_InIterator __beg, _InIterator __end)
+ {
+   typedef typename std::__is_integer<_InIterator>::__type _Integral;
+   _M_construct_aux(__beg, __end, _Integral());
+        }
+
+
+      template<typename _InIterator>
+        void
+        _M_construct(_InIterator __beg, _InIterator __end,
+       std::input_iterator_tag);
+
+
+
+      template<typename _FwdIterator>
+        void
+        _M_construct(_FwdIterator __beg, _FwdIterator __end,
+       std::forward_iterator_tag);
+
+      void
+      _M_construct(size_type __req, _CharT __c);
+
+      allocator_type&
+      _M_get_allocator()
+      { return _M_dataplus; }
+
+      const allocator_type&
+      _M_get_allocator() const
+      { return _M_dataplus; }
+
+    private:
+      size_type
+      _M_check(size_type __pos, const char* __s) const
+      {
+ if (__pos > this->size())
+   __throw_out_of_range_fmt(("%s: __pos (which is %zu) > " "this->size() (which is %zu)")
+                                         ,
+       __s, __pos, this->size());
+ return __pos;
+      }
+
+      void
+      _M_check_length(size_type __n1, size_type __n2, const char* __s) const
+      {
+ if (this->max_size() - (this->size() - __n1) < __n2)
+   __throw_length_error((__s));
+      }
+
+
+
+      size_type
+      _M_limit(size_type __pos, size_type __off) const noexcept
+      {
+ const bool __testoff = __off < this->size() - __pos;
+ return __testoff ? __off : this->size() - __pos;
+      }
+
+
+      bool
+      _M_disjunct(const _CharT* __s) const noexcept
+      {
+ return (less<const _CharT*>()(__s, _M_data())
+  || less<const _CharT*>()(_M_data() + this->size(), __s));
+      }
+
+
+
+      static void
+      _S_copy(_CharT* __d, const _CharT* __s, size_type __n)
+      {
+ if (__n == 1)
+   traits_type::assign(*__d, *__s);
+ else
+   traits_type::copy(__d, __s, __n);
+      }
+
+      static void
+      _S_move(_CharT* __d, const _CharT* __s, size_type __n)
+      {
+ if (__n == 1)
+   traits_type::assign(*__d, *__s);
+ else
+   traits_type::move(__d, __s, __n);
+      }
+
+      static void
+      _S_assign(_CharT* __d, size_type __n, _CharT __c)
+      {
+ if (__n == 1)
+   traits_type::assign(*__d, __c);
+ else
+   traits_type::assign(__d, __n, __c);
+      }
+
+
+
+      template<class _Iterator>
+        static void
+        _S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2)
+        {
+   for (; __k1 != __k2; ++__k1, (void)++__p)
+     traits_type::assign(*__p, *__k1);
+ }
+
+      static void
+      _S_copy_chars(_CharT* __p, iterator __k1, iterator __k2) noexcept
+      { _S_copy_chars(__p, __k1.base(), __k2.base()); }
+
+      static void
+      _S_copy_chars(_CharT* __p, const_iterator __k1, const_iterator __k2)
+      noexcept
+      { _S_copy_chars(__p, __k1.base(), __k2.base()); }
+
+      static void
+      _S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2) noexcept
+      { _S_copy(__p, __k1, __k2 - __k1); }
+
+      static void
+      _S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2)
+      noexcept
+      { _S_copy(__p, __k1, __k2 - __k1); }
+
+      static int
+      _S_compare(size_type __n1, size_type __n2) noexcept
+      {
+ const difference_type __d = difference_type(__n1 - __n2);
+
+ if (__d > __gnu_cxx::__numeric_traits<int>::__max)
+   return __gnu_cxx::__numeric_traits<int>::__max;
+ else if (__d < __gnu_cxx::__numeric_traits<int>::__min)
+   return __gnu_cxx::__numeric_traits<int>::__min;
+ else
+   return int(__d);
+      }
+
+      void
+      _M_assign(const basic_string&);
+
+      void
+      _M_mutate(size_type __pos, size_type __len1, const _CharT* __s,
+  size_type __len2);
+
+      void
+      _M_erase(size_type __pos, size_type __n);
+
+    public:
+
+
+
+
+
+
+
+      basic_string()
+      noexcept(is_nothrow_default_constructible<_Alloc>::value)
+      : _M_dataplus(_M_local_data())
+      { _M_set_length(0); }
+
+
+
+
+      explicit
+      basic_string(const _Alloc& __a) noexcept
+      : _M_dataplus(_M_local_data(), __a)
+      { _M_set_length(0); }
+
+
+
+
+
+      basic_string(const basic_string& __str)
+      : _M_dataplus(_M_local_data(),
+      _Alloc_traits::_S_select_on_copy(__str._M_get_allocator()))
+      { _M_construct(__str._M_data(), __str._M_data() + __str.length()); }
+      basic_string(const basic_string& __str, size_type __pos,
+     const _Alloc& __a = _Alloc())
+      : _M_dataplus(_M_local_data(), __a)
+      {
+ const _CharT* __start = __str._M_data()
+   + __str._M_check(__pos, "basic_string::basic_string");
+ _M_construct(__start, __start + __str._M_limit(__pos, npos));
+      }
+
+
+
+
+
+
+
+      basic_string(const basic_string& __str, size_type __pos,
+     size_type __n)
+      : _M_dataplus(_M_local_data())
+      {
+ const _CharT* __start = __str._M_data()
+   + __str._M_check(__pos, "basic_string::basic_string");
+ _M_construct(__start, __start + __str._M_limit(__pos, __n));
+      }
+      basic_string(const basic_string& __str, size_type __pos,
+     size_type __n, const _Alloc& __a)
+      : _M_dataplus(_M_local_data(), __a)
+      {
+ const _CharT* __start
+   = __str._M_data() + __str._M_check(__pos, "string::string");
+ _M_construct(__start, __start + __str._M_limit(__pos, __n));
+      }
+      basic_string(const _CharT* __s, size_type __n,
+     const _Alloc& __a = _Alloc())
+      : _M_dataplus(_M_local_data(), __a)
+      { _M_construct(__s, __s + __n); }
+
+
+
+
+
+
+      basic_string(const _CharT* __s, const _Alloc& __a = _Alloc())
+      : _M_dataplus(_M_local_data(), __a)
+      { _M_construct(__s, __s ? __s + traits_type::length(__s) : __s+npos); }
+
+
+
+
+
+
+
+      basic_string(size_type __n, _CharT __c, const _Alloc& __a = _Alloc())
+      : _M_dataplus(_M_local_data(), __a)
+      { _M_construct(__n, __c); }
+      basic_string(basic_string&& __str) noexcept
+      : _M_dataplus(_M_local_data(), std::move(__str._M_get_allocator()))
+      {
+ if (__str._M_is_local())
+   {
+     traits_type::copy(_M_local_buf, __str._M_local_buf,
+         _S_local_capacity + 1);
+   }
+ else
+   {
+     _M_data(__str._M_data());
+     _M_capacity(__str._M_allocated_capacity);
+   }
+
+
+
+
+ _M_length(__str.length());
+ __str._M_data(__str._M_local_data());
+ __str._M_set_length(0);
+      }
+
+
+
+
+
+
+      basic_string(initializer_list<_CharT> __l, const _Alloc& __a = _Alloc())
+      : _M_dataplus(_M_local_data(), __a)
+      { _M_construct(__l.begin(), __l.end()); }
+
+      basic_string(const basic_string& __str, const _Alloc& __a)
+      : _M_dataplus(_M_local_data(), __a)
+      { _M_construct(__str.begin(), __str.end()); }
+
+      basic_string(basic_string&& __str, const _Alloc& __a)
+      noexcept(_Alloc_traits::_S_always_equal())
+      : _M_dataplus(_M_local_data(), __a)
+      {
+ if (__str._M_is_local())
+   {
+     traits_type::copy(_M_local_buf, __str._M_local_buf,
+         _S_local_capacity + 1);
+     _M_length(__str.length());
+     __str._M_set_length(0);
+   }
+ else if (_Alloc_traits::_S_always_equal()
+     || __str.get_allocator() == __a)
+   {
+     _M_data(__str._M_data());
+     _M_length(__str.length());
+     _M_capacity(__str._M_allocated_capacity);
+     __str._M_data(__str._M_local_buf);
+     __str._M_set_length(0);
+   }
+ else
+   _M_construct(__str.begin(), __str.end());
+      }
+      template<typename _InputIterator,
+        typename = std::_RequireInputIter<_InputIterator>>
+
+
+
+        basic_string(_InputIterator __beg, _InputIterator __end,
+       const _Alloc& __a = _Alloc())
+ : _M_dataplus(_M_local_data(), __a)
+ { _M_construct(__beg, __end); }
+      ~basic_string()
+      { _M_dispose(); }
+
+
+
+
+
+      basic_string&
+      operator=(const basic_string& __str)
+      {
+
+ if (_Alloc_traits::_S_propagate_on_copy_assign())
+   {
+     if (!_Alloc_traits::_S_always_equal() && !_M_is_local()
+  && _M_get_allocator() != __str._M_get_allocator())
+       {
+
+
+  if (__str.size() <= _S_local_capacity)
+    {
+      _M_destroy(_M_allocated_capacity);
+      _M_data(_M_local_data());
+      _M_set_length(0);
+    }
+  else
+    {
+      const auto __len = __str.size();
+      auto __alloc = __str._M_get_allocator();
+
+      auto __ptr = _Alloc_traits::allocate(__alloc, __len + 1);
+      _M_destroy(_M_allocated_capacity);
+      _M_data(__ptr);
+      _M_capacity(__len);
+      _M_set_length(__len);
+    }
+       }
+     std::__alloc_on_copy(_M_get_allocator(), __str._M_get_allocator());
+   }
+
+ return this->assign(__str);
+      }
+
+
+
+
+
+      basic_string&
+      operator=(const _CharT* __s)
+      { return this->assign(__s); }
+      basic_string&
+      operator=(_CharT __c)
+      {
+ this->assign(1, __c);
+ return *this;
+      }
+      basic_string&
+      operator=(basic_string&& __str)
+      noexcept(_Alloc_traits::_S_nothrow_move())
+      {
+ if (!_M_is_local() && _Alloc_traits::_S_propagate_on_move_assign()
+     && !_Alloc_traits::_S_always_equal()
+     && _M_get_allocator() != __str._M_get_allocator())
+   {
+
+     _M_destroy(_M_allocated_capacity);
+     _M_data(_M_local_data());
+     _M_set_length(0);
+   }
+
+ std::__alloc_on_move(_M_get_allocator(), __str._M_get_allocator());
+
+ if (!__str._M_is_local()
+     && (_Alloc_traits::_S_propagate_on_move_assign()
+       || _Alloc_traits::_S_always_equal()))
+   {
+     pointer __data = nullptr;
+     size_type __capacity;
+     if (!_M_is_local())
+       {
+  if (_Alloc_traits::_S_always_equal())
+    {
+      __data = _M_data();
+      __capacity = _M_allocated_capacity;
+    }
+  else
+    _M_destroy(_M_allocated_capacity);
+       }
+
+     _M_data(__str._M_data());
+     _M_length(__str.length());
+     _M_capacity(__str._M_allocated_capacity);
+     if (__data)
+       {
+  __str._M_data(__data);
+  __str._M_capacity(__capacity);
+       }
+     else
+       __str._M_data(__str._M_local_buf);
+   }
+ else
+     assign(__str);
+ __str.clear();
+ return *this;
+      }
+
+
+
+
+
+      basic_string&
+      operator=(initializer_list<_CharT> __l)
+      {
+ this->assign(__l.begin(), __l.size());
+ return *this;
+      }
+      iterator
+      begin() noexcept
+      { return iterator(_M_data()); }
+
+
+
+
+
+      const_iterator
+      begin() const noexcept
+      { return const_iterator(_M_data()); }
+
+
+
+
+
+      iterator
+      end() noexcept
+      { return iterator(_M_data() + this->size()); }
+
+
+
+
+
+      const_iterator
+      end() const noexcept
+      { return const_iterator(_M_data() + this->size()); }
+
+
+
+
+
+
+      reverse_iterator
+      rbegin() noexcept
+      { return reverse_iterator(this->end()); }
+
+
+
+
+
+
+      const_reverse_iterator
+      rbegin() const noexcept
+      { return const_reverse_iterator(this->end()); }
+
+
+
+
+
+
+      reverse_iterator
+      rend() noexcept
+      { return reverse_iterator(this->begin()); }
+
+
+
+
+
+
+      const_reverse_iterator
+      rend() const noexcept
+      { return const_reverse_iterator(this->begin()); }
+
+
+
+
+
+
+      const_iterator
+      cbegin() const noexcept
+      { return const_iterator(this->_M_data()); }
+
+
+
+
+
+      const_iterator
+      cend() const noexcept
+      { return const_iterator(this->_M_data() + this->size()); }
+
+
+
+
+
+
+      const_reverse_iterator
+      crbegin() const noexcept
+      { return const_reverse_iterator(this->end()); }
+
+
+
+
+
+
+      const_reverse_iterator
+      crend() const noexcept
+      { return const_reverse_iterator(this->begin()); }
+
+
+    public:
+
+
+
+      size_type
+      size() const noexcept
+      { return _M_string_length; }
+
+
+
+      size_type
+      length() const noexcept
+      { return _M_string_length; }
+
+
+      size_type
+      max_size() const noexcept
+      { return (_Alloc_traits::max_size(_M_get_allocator()) - 1) / 2; }
+      void
+      resize(size_type __n, _CharT __c);
+      void
+      resize(size_type __n)
+      { this->resize(__n, _CharT()); }
+
+
+
+      void
+      shrink_to_fit() noexcept
+      {
+
+ if (capacity() > size())
+   {
+     try
+       { reserve(0); }
+     catch(...)
+       { }
+   }
+
+      }
+
+
+
+
+
+
+      size_type
+      capacity() const noexcept
+      {
+ return _M_is_local() ? size_type(_S_local_capacity)
+                      : _M_allocated_capacity;
+      }
+      void
+      reserve(size_type __res_arg = 0);
+
+
+
+
+      void
+      clear() noexcept
+      { _M_set_length(0); }
+
+
+
+
+
+      bool
+      empty() const noexcept
+      { return this->size() == 0; }
+      const_reference
+      operator[] (size_type __pos) const noexcept
+      {
+ ;
+ return _M_data()[__pos];
+      }
+      reference
+      operator[](size_type __pos)
+      {
+
+
+ ;
+
+ ;
+ return _M_data()[__pos];
+      }
+      const_reference
+      at(size_type __n) const
+      {
+ if (__n >= this->size())
+   __throw_out_of_range_fmt(("basic_string::at: __n " "(which is %zu) >= this->size() " "(which is %zu)")
+
+                            ,
+       __n, this->size());
+ return _M_data()[__n];
+      }
+      reference
+      at(size_type __n)
+      {
+ if (__n >= size())
+   __throw_out_of_range_fmt(("basic_string::at: __n " "(which is %zu) >= this->size() " "(which is %zu)")
+
+                            ,
+       __n, this->size());
+ return _M_data()[__n];
+      }
+
+
+
+
+
+
+      reference
+      front() noexcept
+      {
+ ;
+ return operator[](0);
+      }
+
+
+
+
+
+      const_reference
+      front() const noexcept
+      {
+ ;
+ return operator[](0);
+      }
+
+
+
+
+
+      reference
+      back() noexcept
+      {
+ ;
+ return operator[](this->size() - 1);
+      }
+
+
+
+
+
+      const_reference
+      back() const noexcept
+      {
+ ;
+ return operator[](this->size() - 1);
+      }
+      basic_string&
+      operator+=(const basic_string& __str)
+      { return this->append(__str); }
+
+
+
+
+
+
+      basic_string&
+      operator+=(const _CharT* __s)
+      { return this->append(__s); }
+
+
+
+
+
+
+      basic_string&
+      operator+=(_CharT __c)
+      {
+ this->push_back(__c);
+ return *this;
+      }
+
+
+
+
+
+
+
+      basic_string&
+      operator+=(initializer_list<_CharT> __l)
+      { return this->append(__l.begin(), __l.size()); }
+      basic_string&
+      append(const basic_string& __str)
+      { return _M_append(__str._M_data(), __str.size()); }
+      basic_string&
+      append(const basic_string& __str, size_type __pos, size_type __n)
+      { return _M_append(__str._M_data()
+    + __str._M_check(__pos, "basic_string::append"),
+    __str._M_limit(__pos, __n)); }
+
+
+
+
+
+
+
+      basic_string&
+      append(const _CharT* __s, size_type __n)
+      {
+ ;
+ _M_check_length(size_type(0), __n, "basic_string::append");
+ return _M_append(__s, __n);
+      }
+
+
+
+
+
+
+      basic_string&
+      append(const _CharT* __s)
+      {
+ ;
+ const size_type __n = traits_type::length(__s);
+ _M_check_length(size_type(0), __n, "basic_string::append");
+ return _M_append(__s, __n);
+      }
+      basic_string&
+      append(size_type __n, _CharT __c)
+      { return _M_replace_aux(this->size(), size_type(0), __n, __c); }
+
+
+
+
+
+
+
+      basic_string&
+      append(initializer_list<_CharT> __l)
+      { return this->append(__l.begin(), __l.size()); }
+      template<class _InputIterator,
+        typename = std::_RequireInputIter<_InputIterator>>
+
+
+
+        basic_string&
+        append(_InputIterator __first, _InputIterator __last)
+        { return this->replace(end(), end(), __first, __last); }
+      void
+      push_back(_CharT __c)
+      {
+ const size_type __size = this->size();
+ if (__size + 1 > this->capacity())
+   this->_M_mutate(__size, size_type(0), 0, size_type(1));
+ traits_type::assign(this->_M_data()[__size], __c);
+ this->_M_set_length(__size + 1);
+      }
+
+
+
+
+
+
+      basic_string&
+      assign(const basic_string& __str)
+      {
+ this->_M_assign(__str);
+ return *this;
+      }
+      basic_string&
+      assign(basic_string&& __str)
+      noexcept(_Alloc_traits::_S_nothrow_move())
+      {
+
+
+ return *this = std::move(__str);
+      }
+      basic_string&
+      assign(const basic_string& __str, size_type __pos, size_type __n)
+      { return _M_replace(size_type(0), this->size(), __str._M_data()
+     + __str._M_check(__pos, "basic_string::assign"),
+     __str._M_limit(__pos, __n)); }
+      basic_string&
+      assign(const _CharT* __s, size_type __n)
+      {
+ ;
+ return _M_replace(size_type(0), this->size(), __s, __n);
+      }
+      basic_string&
+      assign(const _CharT* __s)
+      {
+ ;
+ return _M_replace(size_type(0), this->size(), __s,
+     traits_type::length(__s));
+      }
+      basic_string&
+      assign(size_type __n, _CharT __c)
+      { return _M_replace_aux(size_type(0), this->size(), __n, __c); }
+      template<class _InputIterator,
+        typename = std::_RequireInputIter<_InputIterator>>
+
+
+
+        basic_string&
+        assign(_InputIterator __first, _InputIterator __last)
+        { return this->replace(begin(), end(), __first, __last); }
+
+
+
+
+
+
+
+      basic_string&
+      assign(initializer_list<_CharT> __l)
+      { return this->assign(__l.begin(), __l.size()); }
+      iterator
+      insert(const_iterator __p, size_type __n, _CharT __c)
+      {
+ ;
+ const size_type __pos = __p - begin();
+ this->replace(__p, __p, __n, __c);
+ return iterator(this->_M_data() + __pos);
+      }
+      template<class _InputIterator,
+        typename = std::_RequireInputIter<_InputIterator>>
+ iterator
+        insert(const_iterator __p, _InputIterator __beg, _InputIterator __end)
+        {
+   ;
+   const size_type __pos = __p - begin();
+   this->replace(__p, __p, __beg, __end);
+   return iterator(this->_M_data() + __pos);
+ }
+      void
+      insert(iterator __p, initializer_list<_CharT> __l)
+      {
+ ;
+ this->insert(__p - begin(), __l.begin(), __l.size());
+      }
+      basic_string&
+      insert(size_type __pos1, const basic_string& __str)
+      { return this->replace(__pos1, size_type(0),
+        __str._M_data(), __str.size()); }
+      basic_string&
+      insert(size_type __pos1, const basic_string& __str,
+      size_type __pos2, size_type __n)
+      { return this->replace(__pos1, size_type(0), __str._M_data()
+        + __str._M_check(__pos2, "basic_string::insert"),
+        __str._M_limit(__pos2, __n)); }
+      basic_string&
+      insert(size_type __pos, const _CharT* __s, size_type __n)
+      { return this->replace(__pos, size_type(0), __s, __n); }
+      basic_string&
+      insert(size_type __pos, const _CharT* __s)
+      {
+ ;
+ return this->replace(__pos, size_type(0), __s,
+        traits_type::length(__s));
+      }
+      basic_string&
+      insert(size_type __pos, size_type __n, _CharT __c)
+      { return _M_replace_aux(_M_check(__pos, "basic_string::insert"),
+         size_type(0), __n, __c); }
+      iterator
+      insert(__const_iterator __p, _CharT __c)
+      {
+ ;
+ const size_type __pos = __p - begin();
+ _M_replace_aux(__pos, size_type(0), size_type(1), __c);
+ return iterator(_M_data() + __pos);
+      }
+      basic_string&
+      erase(size_type __pos = 0, size_type __n = npos)
+      {
+ _M_check(__pos, "basic_string::erase");
+ if (__n == npos)
+   this->_M_set_length(__pos);
+ else if (__n != 0)
+   this->_M_erase(__pos, _M_limit(__pos, __n));
+ return *this;
+      }
+      iterator
+      erase(__const_iterator __position)
+      {
+
+                           ;
+ const size_type __pos = __position - begin();
+ this->_M_erase(__pos, size_type(1));
+ return iterator(_M_data() + __pos);
+      }
+      iterator
+      erase(__const_iterator __first, __const_iterator __last)
+      {
+
+                        ;
+        const size_type __pos = __first - begin();
+ if (__last == end())
+   this->_M_set_length(__pos);
+ else
+   this->_M_erase(__pos, __last - __first);
+ return iterator(this->_M_data() + __pos);
+      }
+
+
+
+
+
+
+
+      void
+      pop_back() noexcept
+      {
+ ;
+ _M_erase(size() - 1, 1);
+      }
+      basic_string&
+      replace(size_type __pos, size_type __n, const basic_string& __str)
+      { return this->replace(__pos, __n, __str._M_data(), __str.size()); }
+      basic_string&
+      replace(size_type __pos1, size_type __n1, const basic_string& __str,
+       size_type __pos2, size_type __n2)
+      { return this->replace(__pos1, __n1, __str._M_data()
+        + __str._M_check(__pos2, "basic_string::replace"),
+        __str._M_limit(__pos2, __n2)); }
+      basic_string&
+      replace(size_type __pos, size_type __n1, const _CharT* __s,
+       size_type __n2)
+      {
+ ;
+ return _M_replace(_M_check(__pos, "basic_string::replace"),
+     _M_limit(__pos, __n1), __s, __n2);
+      }
+      basic_string&
+      replace(size_type __pos, size_type __n1, const _CharT* __s)
+      {
+ ;
+ return this->replace(__pos, __n1, __s, traits_type::length(__s));
+      }
+      basic_string&
+      replace(size_type __pos, size_type __n1, size_type __n2, _CharT __c)
+      { return _M_replace_aux(_M_check(__pos, "basic_string::replace"),
+         _M_limit(__pos, __n1), __n2, __c); }
+      basic_string&
+      replace(__const_iterator __i1, __const_iterator __i2,
+       const basic_string& __str)
+      { return this->replace(__i1, __i2, __str._M_data(), __str.size()); }
+      basic_string&
+      replace(__const_iterator __i1, __const_iterator __i2,
+       const _CharT* __s, size_type __n)
+      {
+
+                      ;
+ return this->replace(__i1 - begin(), __i2 - __i1, __s, __n);
+      }
+      basic_string&
+      replace(__const_iterator __i1, __const_iterator __i2, const _CharT* __s)
+      {
+ ;
+ return this->replace(__i1, __i2, __s, traits_type::length(__s));
+      }
+      basic_string&
+      replace(__const_iterator __i1, __const_iterator __i2, size_type __n,
+       _CharT __c)
+      {
+
+                      ;
+ return _M_replace_aux(__i1 - begin(), __i2 - __i1, __n, __c);
+      }
+      template<class _InputIterator,
+        typename = std::_RequireInputIter<_InputIterator>>
+        basic_string&
+        replace(const_iterator __i1, const_iterator __i2,
+  _InputIterator __k1, _InputIterator __k2)
+        {
+  
+                        ;
+   ;
+   return this->_M_replace_dispatch(__i1, __i2, __k1, __k2,
+        std::__false_type());
+ }
+      basic_string&
+      replace(__const_iterator __i1, __const_iterator __i2,
+       _CharT* __k1, _CharT* __k2)
+      {
+
+                      ;
+ ;
+ return this->replace(__i1 - begin(), __i2 - __i1,
+        __k1, __k2 - __k1);
+      }
+
+      basic_string&
+      replace(__const_iterator __i1, __const_iterator __i2,
+       const _CharT* __k1, const _CharT* __k2)
+      {
+
+                      ;
+ ;
+ return this->replace(__i1 - begin(), __i2 - __i1,
+        __k1, __k2 - __k1);
+      }
+
+      basic_string&
+      replace(__const_iterator __i1, __const_iterator __i2,
+       iterator __k1, iterator __k2)
+      {
+
+                      ;
+ ;
+ return this->replace(__i1 - begin(), __i2 - __i1,
+        __k1.base(), __k2 - __k1);
+      }
+
+      basic_string&
+      replace(__const_iterator __i1, __const_iterator __i2,
+       const_iterator __k1, const_iterator __k2)
+      {
+
+                      ;
+ ;
+ return this->replace(__i1 - begin(), __i2 - __i1,
+        __k1.base(), __k2 - __k1);
+      }
+      basic_string& replace(const_iterator __i1, const_iterator __i2,
+       initializer_list<_CharT> __l)
+      { return this->replace(__i1, __i2, __l.begin(), __l.size()); }
+    private:
+      template<class _Integer>
+ basic_string&
+ _M_replace_dispatch(const_iterator __i1, const_iterator __i2,
+       _Integer __n, _Integer __val, __true_type)
+        { return _M_replace_aux(__i1 - begin(), __i2 - __i1, __n, __val); }
+
+      template<class _InputIterator>
+ basic_string&
+ _M_replace_dispatch(const_iterator __i1, const_iterator __i2,
+       _InputIterator __k1, _InputIterator __k2,
+       __false_type);
+
+      basic_string&
+      _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2,
+       _CharT __c);
+
+      basic_string&
+      _M_replace(size_type __pos, size_type __len1, const _CharT* __s,
+   const size_type __len2);
+
+      basic_string&
+      _M_append(const _CharT* __s, size_type __n);
+
+    public:
+      size_type
+      copy(_CharT* __s, size_type __n, size_type __pos = 0) const;
+      void
+      swap(basic_string& __s) noexcept;
+      const _CharT*
+      c_str() const noexcept
+      { return _M_data(); }
+      const _CharT*
+      data() const noexcept
+      { return _M_data(); }
+      allocator_type
+      get_allocator() const noexcept
+      { return _M_get_allocator(); }
+      size_type
+      find(const _CharT* __s, size_type __pos, size_type __n) const
+      noexcept;
+      size_type
+      find(const basic_string& __str, size_type __pos = 0) const
+      noexcept
+      { return this->find(__str.data(), __pos, __str.size()); }
+      size_type
+      find(const _CharT* __s, size_type __pos = 0) const noexcept
+      {
+ ;
+ return this->find(__s, __pos, traits_type::length(__s));
+      }
+      size_type
+      find(_CharT __c, size_type __pos = 0) const noexcept;
+      size_type
+      rfind(const basic_string& __str, size_type __pos = npos) const
+      noexcept
+      { return this->rfind(__str.data(), __pos, __str.size()); }
+      size_type
+      rfind(const _CharT* __s, size_type __pos, size_type __n) const
+      noexcept;
+      size_type
+      rfind(const _CharT* __s, size_type __pos = npos) const
+      {
+ ;
+ return this->rfind(__s, __pos, traits_type::length(__s));
+      }
+      size_type
+      rfind(_CharT __c, size_type __pos = npos) const noexcept;
+      size_type
+      find_first_of(const basic_string& __str, size_type __pos = 0) const
+      noexcept
+      { return this->find_first_of(__str.data(), __pos, __str.size()); }
+      size_type
+      find_first_of(const _CharT* __s, size_type __pos, size_type __n) const
+      noexcept;
+      size_type
+      find_first_of(const _CharT* __s, size_type __pos = 0) const
+      noexcept
+      {
+ ;
+ return this->find_first_of(__s, __pos, traits_type::length(__s));
+      }
+      size_type
+      find_first_of(_CharT __c, size_type __pos = 0) const noexcept
+      { return this->find(__c, __pos); }
+      size_type
+      find_last_of(const basic_string& __str, size_type __pos = npos) const
+      noexcept
+      { return this->find_last_of(__str.data(), __pos, __str.size()); }
+      size_type
+      find_last_of(const _CharT* __s, size_type __pos, size_type __n) const
+      noexcept;
+      size_type
+      find_last_of(const _CharT* __s, size_type __pos = npos) const
+      noexcept
+      {
+ ;
+ return this->find_last_of(__s, __pos, traits_type::length(__s));
+      }
+      size_type
+      find_last_of(_CharT __c, size_type __pos = npos) const noexcept
+      { return this->rfind(__c, __pos); }
+      size_type
+      find_first_not_of(const basic_string& __str, size_type __pos = 0) const
+      noexcept
+      { return this->find_first_not_of(__str.data(), __pos, __str.size()); }
+      size_type
+      find_first_not_of(const _CharT* __s, size_type __pos,
+   size_type __n) const noexcept;
+      size_type
+      find_first_not_of(const _CharT* __s, size_type __pos = 0) const
+      noexcept
+      {
+ ;
+ return this->find_first_not_of(__s, __pos, traits_type::length(__s));
+      }
+      size_type
+      find_first_not_of(_CharT __c, size_type __pos = 0) const
+      noexcept;
+      size_type
+      find_last_not_of(const basic_string& __str, size_type __pos = npos) const
+      noexcept
+      { return this->find_last_not_of(__str.data(), __pos, __str.size()); }
+      size_type
+      find_last_not_of(const _CharT* __s, size_type __pos,
+         size_type __n) const noexcept;
+      size_type
+      find_last_not_of(const _CharT* __s, size_type __pos = npos) const
+      noexcept
+      {
+ ;
+ return this->find_last_not_of(__s, __pos, traits_type::length(__s));
+      }
+      size_type
+      find_last_not_of(_CharT __c, size_type __pos = npos) const
+      noexcept;
+      basic_string
+      substr(size_type __pos = 0, size_type __n = npos) const
+      { return basic_string(*this,
+       _M_check(__pos, "basic_string::substr"), __n); }
+      int
+      compare(const basic_string& __str) const
+      {
+ const size_type __size = this->size();
+ const size_type __osize = __str.size();
+ const size_type __len = std::min(__size, __osize);
+
+ int __r = traits_type::compare(_M_data(), __str.data(), __len);
+ if (!__r)
+   __r = _S_compare(__size, __osize);
+ return __r;
+      }
+      int
+      compare(size_type __pos, size_type __n, const basic_string& __str) const;
+      int
+      compare(size_type __pos1, size_type __n1, const basic_string& __str,
+       size_type __pos2, size_type __n2) const;
+      int
+      compare(const _CharT* __s) const noexcept;
+      int
+      compare(size_type __pos, size_type __n1, const _CharT* __s) const;
+      int
+      compare(size_type __pos, size_type __n1, const _CharT* __s,
+       size_type __n2) const;
+
+
+      template<typename, typename, typename> friend class basic_stringbuf;
+    };
+}
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    basic_string<_CharT, _Traits, _Alloc>
+    operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+       const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    {
+      basic_string<_CharT, _Traits, _Alloc> __str(__lhs);
+      __str.append(__rhs);
+      return __str;
+    }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    basic_string<_CharT,_Traits,_Alloc>
+    operator+(const _CharT* __lhs,
+       const basic_string<_CharT,_Traits,_Alloc>& __rhs);
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    basic_string<_CharT,_Traits,_Alloc>
+    operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs);
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline basic_string<_CharT, _Traits, _Alloc>
+    operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+       const _CharT* __rhs)
+    {
+      basic_string<_CharT, _Traits, _Alloc> __str(__lhs);
+      __str.append(__rhs);
+      return __str;
+    }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline basic_string<_CharT, _Traits, _Alloc>
+    operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs)
+    {
+      typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
+      typedef typename __string_type::size_type __size_type;
+      __string_type __str(__lhs);
+      __str.append(__size_type(1), __rhs);
+      return __str;
+    }
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline basic_string<_CharT, _Traits, _Alloc>
+    operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
+       const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    { return std::move(__lhs.append(__rhs)); }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline basic_string<_CharT, _Traits, _Alloc>
+    operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+       basic_string<_CharT, _Traits, _Alloc>&& __rhs)
+    { return std::move(__rhs.insert(0, __lhs)); }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline basic_string<_CharT, _Traits, _Alloc>
+    operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
+       basic_string<_CharT, _Traits, _Alloc>&& __rhs)
+    {
+      const auto __size = __lhs.size() + __rhs.size();
+      const bool __cond = (__size > __lhs.capacity()
+      && __size <= __rhs.capacity());
+      return __cond ? std::move(__rhs.insert(0, __lhs))
+             : std::move(__lhs.append(__rhs));
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline basic_string<_CharT, _Traits, _Alloc>
+    operator+(const _CharT* __lhs,
+       basic_string<_CharT, _Traits, _Alloc>&& __rhs)
+    { return std::move(__rhs.insert(0, __lhs)); }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline basic_string<_CharT, _Traits, _Alloc>
+    operator+(_CharT __lhs,
+       basic_string<_CharT, _Traits, _Alloc>&& __rhs)
+    { return std::move(__rhs.insert(0, 1, __lhs)); }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline basic_string<_CharT, _Traits, _Alloc>
+    operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
+       const _CharT* __rhs)
+    { return std::move(__lhs.append(__rhs)); }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline basic_string<_CharT, _Traits, _Alloc>
+    operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
+       _CharT __rhs)
+    { return std::move(__lhs.append(1, __rhs)); }
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+        const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    noexcept
+    { return __lhs.compare(__rhs) == 0; }
+
+  template<typename _CharT>
+    inline
+    typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value, bool>::__type
+    operator==(const basic_string<_CharT>& __lhs,
+        const basic_string<_CharT>& __rhs) noexcept
+    { return (__lhs.size() == __rhs.size()
+       && !std::char_traits<_CharT>::compare(__lhs.data(), __rhs.data(),
+          __lhs.size())); }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator==(const _CharT* __lhs,
+        const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    { return __rhs.compare(__lhs) == 0; }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+        const _CharT* __rhs)
+    { return __lhs.compare(__rhs) == 0; }
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+        const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    noexcept
+    { return !(__lhs == __rhs); }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator!=(const _CharT* __lhs,
+        const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    { return !(__lhs == __rhs); }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+        const _CharT* __rhs)
+    { return !(__lhs == __rhs); }
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+       const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    noexcept
+    { return __lhs.compare(__rhs) < 0; }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+       const _CharT* __rhs)
+    { return __lhs.compare(__rhs) < 0; }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator<(const _CharT* __lhs,
+       const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    { return __rhs.compare(__lhs) > 0; }
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+       const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    noexcept
+    { return __lhs.compare(__rhs) > 0; }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+       const _CharT* __rhs)
+    { return __lhs.compare(__rhs) > 0; }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator>(const _CharT* __lhs,
+       const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    { return __rhs.compare(__lhs) < 0; }
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+        const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    noexcept
+    { return __lhs.compare(__rhs) <= 0; }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+        const _CharT* __rhs)
+    { return __lhs.compare(__rhs) <= 0; }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator<=(const _CharT* __lhs,
+        const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    { return __rhs.compare(__lhs) >= 0; }
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator>=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+        const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    noexcept
+    { return __lhs.compare(__rhs) >= 0; }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator>=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+        const _CharT* __rhs)
+    { return __lhs.compare(__rhs) >= 0; }
+
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline bool
+    operator>=(const _CharT* __lhs,
+      const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    { return __rhs.compare(__lhs) <= 0; }
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline void
+    swap(basic_string<_CharT, _Traits, _Alloc>& __lhs,
+  basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    noexcept(noexcept(__lhs.swap(__rhs)))
+    { __lhs.swap(__rhs); }
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    basic_istream<_CharT, _Traits>&
+    operator>>(basic_istream<_CharT, _Traits>& __is,
+        basic_string<_CharT, _Traits, _Alloc>& __str);
+
+  template<>
+    basic_istream<char>&
+    operator>>(basic_istream<char>& __is, basic_string<char>& __str);
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline basic_ostream<_CharT, _Traits>&
+    operator<<(basic_ostream<_CharT, _Traits>& __os,
+        const basic_string<_CharT, _Traits, _Alloc>& __str)
+    {
+
+
+      return __ostream_insert(__os, __str.data(), __str.size());
+    }
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    basic_istream<_CharT, _Traits>&
+    getline(basic_istream<_CharT, _Traits>& __is,
+     basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim);
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline basic_istream<_CharT, _Traits>&
+    getline(basic_istream<_CharT, _Traits>& __is,
+     basic_string<_CharT, _Traits, _Alloc>& __str)
+    { return std::getline(__is, __str, __is.widen('\n')); }
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline basic_istream<_CharT, _Traits>&
+    getline(basic_istream<_CharT, _Traits>&& __is,
+     basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim)
+    { return std::getline(__is, __str, __delim); }
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    inline basic_istream<_CharT, _Traits>&
+    getline(basic_istream<_CharT, _Traits>&& __is,
+     basic_string<_CharT, _Traits, _Alloc>& __str)
+    { return std::getline(__is, __str); }
+
+
+  template<>
+    basic_istream<char>&
+    getline(basic_istream<char>& __in, basic_string<char>& __str,
+     char __delim);
+
+
+  template<>
+    basic_istream<wchar_t>&
+    getline(basic_istream<wchar_t>& __in, basic_string<wchar_t>& __str,
+     wchar_t __delim);
+
+
+
+}
+
+
+
+       
+       
+       
+       
+
+
+
+extern "C" {
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+typedef struct
+{
+  __off_t __pos;
+  __mbstate_t __state;
+} _G_fpos_t;
+typedef struct
+{
+  __off64_t __pos;
+  __mbstate_t __state;
+} _G_fpos64_t;
+struct _IO_jump_t; struct _IO_FILE;
+
+
+
+
+typedef void _IO_lock_t;
+
+
+
+
+
+struct _IO_marker {
+  struct _IO_marker *_next;
+  struct _IO_FILE *_sbuf;
+
+
+
+  int _pos;
+};
+
+
+enum __codecvt_result
+{
+  __codecvt_ok,
+  __codecvt_partial,
+  __codecvt_error,
+  __codecvt_noconv
+};
+struct _IO_FILE {
+  int _flags;
+
+
+
+
+  char* _IO_read_ptr;
+  char* _IO_read_end;
+  char* _IO_read_base;
+  char* _IO_write_base;
+  char* _IO_write_ptr;
+  char* _IO_write_end;
+  char* _IO_buf_base;
+  char* _IO_buf_end;
+
+  char *_IO_save_base;
+  char *_IO_backup_base;
+  char *_IO_save_end;
+
+  struct _IO_marker *_markers;
+
+  struct _IO_FILE *_chain;
+
+  int _fileno;
+
+
+
+  int _flags2;
+
+  __off_t _old_offset;
+
+
+
+  unsigned short _cur_column;
+  signed char _vtable_offset;
+  char _shortbuf[1];
+
+
+
+  _IO_lock_t *_lock;
+  __off64_t _offset;
+
+
+
+
+
+
+
+  void *__pad1;
+  void *__pad2;
+  void *__pad3;
+  void *__pad4;
+
+  size_t __pad5;
+  int _mode;
+
+  char _unused2[15 * sizeof (int) - 4 * sizeof (void *) - sizeof (size_t)];
+
+};
+
+
+
+
+
+struct _IO_FILE_plus;
+
+extern struct _IO_FILE_plus _IO_2_1_stdin_;
+extern struct _IO_FILE_plus _IO_2_1_stdout_;
+extern struct _IO_FILE_plus _IO_2_1_stderr_;
+typedef __ssize_t __io_read_fn (void *__cookie, char *__buf, size_t __nbytes);
+
+
+
+
+
+
+
+typedef __ssize_t __io_write_fn (void *__cookie, const char *__buf,
+     size_t __n);
+
+
+
+
+
+
+
+typedef int __io_seek_fn (void *__cookie, __off64_t *__pos, int __w);
+
+
+typedef int __io_close_fn (void *__cookie);
+
+
+
+
+typedef __io_read_fn cookie_read_function_t;
+typedef __io_write_fn cookie_write_function_t;
+typedef __io_seek_fn cookie_seek_function_t;
+typedef __io_close_fn cookie_close_function_t;
+
+
+typedef struct
+{
+  __io_read_fn *read;
+  __io_write_fn *write;
+  __io_seek_fn *seek;
+  __io_close_fn *close;
+} _IO_cookie_io_functions_t;
+typedef _IO_cookie_io_functions_t cookie_io_functions_t;
+
+struct _IO_cookie_file;
+
+
+extern void _IO_cookie_init (struct _IO_cookie_file *__cfile, int __read_write,
+        void *__cookie, _IO_cookie_io_functions_t __fns);
+
+
+
+
+extern "C" {
+
+
+extern int __underflow (_IO_FILE *);
+extern int __uflow (_IO_FILE *);
+extern int __overflow (_IO_FILE *, int);
+extern int _IO_getc (_IO_FILE *__fp);
+extern int _IO_putc (int __c, _IO_FILE *__fp);
+extern int _IO_feof (_IO_FILE *__fp) throw ();
+extern int _IO_ferror (_IO_FILE *__fp) throw ();
+
+extern int _IO_peekc_locked (_IO_FILE *__fp);
+
+
+
+
+
+extern void _IO_flockfile (_IO_FILE *) throw ();
+extern void _IO_funlockfile (_IO_FILE *) throw ();
+extern int _IO_ftrylockfile (_IO_FILE *) throw ();
+extern int _IO_vfscanf (_IO_FILE * __restrict, const char * __restrict,
+   __gnuc_va_list, int *__restrict);
+extern int _IO_vfprintf (_IO_FILE *__restrict, const char *__restrict,
+    __gnuc_va_list);
+extern __ssize_t _IO_padn (_IO_FILE *, int, __ssize_t);
+extern size_t _IO_sgetn (_IO_FILE *, void *, size_t);
+
+extern __off64_t _IO_seekoff (_IO_FILE *, __off64_t, int, int);
+extern __off64_t _IO_seekpos (_IO_FILE *, __off64_t, int);
+
+extern void _IO_free_backup_area (_IO_FILE *) throw ();
+}
+
+
+
+
+typedef __gnuc_va_list va_list;
+typedef _G_fpos_t fpos_t;
+
+
+
+
+typedef _G_fpos64_t fpos64_t;
+
+
+
+extern struct _IO_FILE *stdin;
+extern struct _IO_FILE *stdout;
+extern struct _IO_FILE *stderr;
+
+
+
+
+
+
+extern int remove (const char *__filename) throw ();
+
+extern int rename (const char *__old, const char *__new) throw ();
+
+
+
+extern int renameat (int __oldfd, const char *__old, int __newfd,
+       const char *__new) throw ();
+
+
+
+
+
+
+
+extern FILE *tmpfile (void) ;
+extern FILE *tmpfile64 (void) ;
+
+
+
+extern char *tmpnam (char *__s) throw () ;
+
+
+
+
+extern char *tmpnam_r (char *__s) throw () ;
+extern char *tempnam (const char *__dir, const char *__pfx)
+     throw () __attribute__ ((__malloc__)) ;
+
+
+
+
+
+
+
+extern int fclose (FILE *__stream);
+
+
+
+
+extern int fflush (FILE *__stream);
+extern int fflush_unlocked (FILE *__stream);
+extern int fcloseall (void);
+extern FILE *fopen (const char *__restrict __filename,
+      const char *__restrict __modes) ;
+
+
+
+
+extern FILE *freopen (const char *__restrict __filename,
+        const char *__restrict __modes,
+        FILE *__restrict __stream) ;
+extern FILE *fopen64 (const char *__restrict __filename,
+        const char *__restrict __modes) ;
+extern FILE *freopen64 (const char *__restrict __filename,
+   const char *__restrict __modes,
+   FILE *__restrict __stream) ;
+
+
+
+
+extern FILE *fdopen (int __fd, const char *__modes) throw () ;
+
+
+
+
+
+extern FILE *fopencookie (void *__restrict __magic_cookie,
+     const char *__restrict __modes,
+     _IO_cookie_io_functions_t __io_funcs) throw () ;
+
+
+
+
+extern FILE *fmemopen (void *__s, size_t __len, const char *__modes)
+  throw () ;
+
+
+
+
+extern FILE *open_memstream (char **__bufloc, size_t *__sizeloc) throw () ;
+
+
+
+
+
+extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) throw ();
+
+
+
+extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf,
+      int __modes, size_t __n) throw ();
+
+
+
+
+extern void setbuffer (FILE *__restrict __stream, char *__restrict __buf,
+         size_t __size) throw ();
+
+
+extern void setlinebuf (FILE *__stream) throw ();
+
+
+
+
+
+
+
+extern int fprintf (FILE *__restrict __stream,
+      const char *__restrict __format, ...);
+
+
+
+
+extern int printf (const char *__restrict __format, ...);
+
+extern int sprintf (char *__restrict __s,
+      const char *__restrict __format, ...) throw ();
+
+
+
+
+
+extern int vfprintf (FILE *__restrict __s, const char *__restrict __format,
+       __gnuc_va_list __arg);
+
+
+
+
+extern int vprintf (const char *__restrict __format, __gnuc_va_list __arg);
+
+extern int vsprintf (char *__restrict __s, const char *__restrict __format,
+       __gnuc_va_list __arg) throw ();
+
+
+
+extern int snprintf (char *__restrict __s, size_t __maxlen,
+       const char *__restrict __format, ...)
+     throw () __attribute__ ((__format__ (__printf__, 3, 4)));
+
+extern int vsnprintf (char *__restrict __s, size_t __maxlen,
+        const char *__restrict __format, __gnuc_va_list __arg)
+     throw () __attribute__ ((__format__ (__printf__, 3, 0)));
+
+
+
+
+
+extern int vasprintf (char **__restrict __ptr, const char *__restrict __f,
+        __gnuc_va_list __arg)
+     throw () __attribute__ ((__format__ (__printf__, 2, 0))) ;
+extern int __asprintf (char **__restrict __ptr,
+         const char *__restrict __fmt, ...)
+     throw () __attribute__ ((__format__ (__printf__, 2, 3))) ;
+extern int asprintf (char **__restrict __ptr,
+       const char *__restrict __fmt, ...)
+     throw () __attribute__ ((__format__ (__printf__, 2, 3))) ;
+
+
+
+
+extern int vdprintf (int __fd, const char *__restrict __fmt,
+       __gnuc_va_list __arg)
+     __attribute__ ((__format__ (__printf__, 2, 0)));
+extern int dprintf (int __fd, const char *__restrict __fmt, ...)
+     __attribute__ ((__format__ (__printf__, 2, 3)));
+
+
+
+
+
+
+
+extern int fscanf (FILE *__restrict __stream,
+     const char *__restrict __format, ...) ;
+
+
+
+
+extern int scanf (const char *__restrict __format, ...) ;
+
+extern int sscanf (const char *__restrict __s,
+     const char *__restrict __format, ...) throw ();
+extern int vfscanf (FILE *__restrict __s, const char *__restrict __format,
+      __gnuc_va_list __arg)
+     __attribute__ ((__format__ (__scanf__, 2, 0))) ;
+
+
+
+
+
+extern int vscanf (const char *__restrict __format, __gnuc_va_list __arg)
+     __attribute__ ((__format__ (__scanf__, 1, 0))) ;
+
+
+extern int vsscanf (const char *__restrict __s,
+      const char *__restrict __format, __gnuc_va_list __arg)
+     throw () __attribute__ ((__format__ (__scanf__, 2, 0)));
+extern int fgetc (FILE *__stream);
+extern int getc (FILE *__stream);
+
+
+
+
+
+extern int getchar (void);
+extern int getc_unlocked (FILE *__stream);
+extern int getchar_unlocked (void);
+extern int fgetc_unlocked (FILE *__stream);
+extern int fputc (int __c, FILE *__stream);
+extern int putc (int __c, FILE *__stream);
+
+
+
+
+
+extern int putchar (int __c);
+extern int fputc_unlocked (int __c, FILE *__stream);
+
+
+
+
+
+
+
+extern int putc_unlocked (int __c, FILE *__stream);
+extern int putchar_unlocked (int __c);
+
+
+
+
+
+
+extern int getw (FILE *__stream);
+
+
+extern int putw (int __w, FILE *__stream);
+
+
+
+
+
+
+
+extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
+     ;
+extern char *fgets_unlocked (char *__restrict __s, int __n,
+        FILE *__restrict __stream) ;
+extern __ssize_t __getdelim (char **__restrict __lineptr,
+          size_t *__restrict __n, int __delimiter,
+          FILE *__restrict __stream) ;
+extern __ssize_t getdelim (char **__restrict __lineptr,
+        size_t *__restrict __n, int __delimiter,
+        FILE *__restrict __stream) ;
+
+
+
+
+
+
+
+extern __ssize_t getline (char **__restrict __lineptr,
+       size_t *__restrict __n,
+       FILE *__restrict __stream) ;
+
+
+
+
+
+
+
+extern int fputs (const char *__restrict __s, FILE *__restrict __stream);
+
+
+
+
+
+extern int puts (const char *__s);
+
+
+
+
+
+
+extern int ungetc (int __c, FILE *__stream);
+
+
+
+
+
+
+extern size_t fread (void *__restrict __ptr, size_t __size,
+       size_t __n, FILE *__restrict __stream) ;
+
+
+
+
+extern size_t fwrite (const void *__restrict __ptr, size_t __size,
+        size_t __n, FILE *__restrict __s);
+extern int fputs_unlocked (const char *__restrict __s,
+      FILE *__restrict __stream);
+extern size_t fread_unlocked (void *__restrict __ptr, size_t __size,
+         size_t __n, FILE *__restrict __stream) ;
+extern size_t fwrite_unlocked (const void *__restrict __ptr, size_t __size,
+          size_t __n, FILE *__restrict __stream);
+
+
+
+
+
+
+
+extern int fseek (FILE *__stream, long int __off, int __whence);
+
+
+
+
+extern long int ftell (FILE *__stream) ;
+
+
+
+
+extern void rewind (FILE *__stream);
+extern int fseeko (FILE *__stream, __off_t __off, int __whence);
+
+
+
+
+extern __off_t ftello (FILE *__stream) ;
+extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos);
+
+
+
+
+extern int fsetpos (FILE *__stream, const fpos_t *__pos);
+extern int fseeko64 (FILE *__stream, __off64_t __off, int __whence);
+extern __off64_t ftello64 (FILE *__stream) ;
+extern int fgetpos64 (FILE *__restrict __stream, fpos64_t *__restrict __pos);
+extern int fsetpos64 (FILE *__stream, const fpos64_t *__pos);
+
+
+
+extern void clearerr (FILE *__stream) throw ();
+
+extern int feof (FILE *__stream) throw () ;
+
+extern int ferror (FILE *__stream) throw () ;
+
+
+
+extern void clearerr_unlocked (FILE *__stream) throw ();
+extern int feof_unlocked (FILE *__stream) throw () ;
+extern int ferror_unlocked (FILE *__stream) throw () ;
+
+
+
+
+
+
+
+extern void perror (const char *__s);
+
+
+
+
+
+extern int sys_nerr;
+extern const char *const sys_errlist[];
+
+
+extern int _sys_nerr;
+extern const char *const _sys_errlist[];
+
+
+
+
+extern int fileno (FILE *__stream) throw () ;
+
+
+
+
+extern int fileno_unlocked (FILE *__stream) throw () ;
+extern FILE *popen (const char *__command, const char *__modes) ;
+
+
+
+
+
+extern int pclose (FILE *__stream);
+
+
+
+
+
+extern char *ctermid (char *__s) throw ();
+
+
+
+
+
+extern char *cuserid (char *__s);
+
+
+
+
+struct obstack;
+
+
+extern int obstack_printf (struct obstack *__restrict __obstack,
+      const char *__restrict __format, ...)
+     throw () __attribute__ ((__format__ (__printf__, 2, 3)));
+extern int obstack_vprintf (struct obstack *__restrict __obstack,
+       const char *__restrict __format,
+       __gnuc_va_list __args)
+     throw () __attribute__ ((__format__ (__printf__, 2, 0)));
+
+
+
+
+
+
+
+extern void flockfile (FILE *__stream) throw ();
+
+
+
+extern int ftrylockfile (FILE *__stream) throw () ;
+
+
+extern void funlockfile (FILE *__stream) throw ();
+}
+namespace std
+{
+  using ::FILE;
+  using ::fpos_t;
+
+  using ::clearerr;
+  using ::fclose;
+  using ::feof;
+  using ::ferror;
+  using ::fflush;
+  using ::fgetc;
+  using ::fgetpos;
+  using ::fgets;
+  using ::fopen;
+  using ::fprintf;
+  using ::fputc;
+  using ::fputs;
+  using ::fread;
+  using ::freopen;
+  using ::fscanf;
+  using ::fseek;
+  using ::fsetpos;
+  using ::ftell;
+  using ::fwrite;
+  using ::getc;
+  using ::getchar;
+
+
+
+
+  using ::perror;
+  using ::printf;
+  using ::putc;
+  using ::putchar;
+  using ::puts;
+  using ::remove;
+  using ::rename;
+  using ::rewind;
+  using ::scanf;
+  using ::setbuf;
+  using ::setvbuf;
+  using ::sprintf;
+  using ::sscanf;
+  using ::tmpfile;
+
+  using ::tmpnam;
+
+  using ::ungetc;
+  using ::vfprintf;
+  using ::vprintf;
+  using ::vsprintf;
+}
+namespace __gnu_cxx
+{
+  using ::snprintf;
+  using ::vfscanf;
+  using ::vscanf;
+  using ::vsnprintf;
+  using ::vsscanf;
+
+}
+
+namespace std
+{
+  using ::__gnu_cxx::snprintf;
+  using ::__gnu_cxx::vfscanf;
+  using ::__gnu_cxx::vscanf;
+  using ::__gnu_cxx::vsnprintf;
+  using ::__gnu_cxx::vsscanf;
+}
+       
+
+
+
+
+
+
+
+
+
+
+extern "C" {
+
+
+extern int *__errno_location (void) throw () __attribute__ ((__const__));
+
+
+
+
+
+
+
+extern char *program_invocation_name;
+extern char *program_invocation_short_name;
+
+
+
+
+
+typedef int error_t;
+
+
+
+
+}
+
+namespace __gnu_cxx __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+  template<typename _TRet, typename _Ret = _TRet, typename _CharT,
+    typename... _Base>
+    _Ret
+    __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
+    const char* __name, const _CharT* __str, std::size_t* __idx,
+    _Base... __base)
+    {
+      _Ret __ret;
+
+      _CharT* __endptr;
+
+      struct _Save_errno {
+ _Save_errno() : _M_errno((*__errno_location ())) { (*__errno_location ()) = 0; }
+ ~_Save_errno() { if ((*__errno_location ()) == 0) (*__errno_location ()) = _M_errno; }
+ int _M_errno;
+      } const __save_errno;
+
+      struct _Range_chk {
+   static bool
+   _S_chk(_TRet, std::false_type) { return false; }
+
+   static bool
+   _S_chk(_TRet __val, std::true_type)
+   {
+     return __val < _TRet(__numeric_traits<int>::__min)
+       || __val > _TRet(__numeric_traits<int>::__max);
+   }
+      };
+
+      const _TRet __tmp = __convf(__str, &__endptr, __base...);
+
+      if (__endptr == __str)
+ std::__throw_invalid_argument(__name);
+      else if ((*__errno_location ()) == 34
+   || _Range_chk::_S_chk(__tmp, std::is_same<_Ret, int>{}))
+ std::__throw_out_of_range(__name);
+      else
+ __ret = __tmp;
+
+      if (__idx)
+ *__idx = __endptr - __str;
+
+      return __ret;
+    }
+
+
+  template<typename _String, typename _CharT = typename _String::value_type>
+    _String
+    __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
+     __builtin_va_list), std::size_t __n,
+   const _CharT* __fmt, ...)
+    {
+
+
+      _CharT* __s = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
+         * __n));
+
+      __builtin_va_list __args;
+      __builtin_va_start(__args, __fmt);
+
+      const int __len = __convf(__s, __n, __fmt, __args);
+
+      __builtin_va_end(__args);
+
+      return _String(__s, __s + __len);
+    }
+
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+namespace __cxx11 {
+
+
+
+  inline int
+  stoi(const string& __str, size_t* __idx = 0, int __base = 10)
+  { return __gnu_cxx::__stoa<long, int>(&std::strtol, "stoi", __str.c_str(),
+     __idx, __base); }
+
+  inline long
+  stol(const string& __str, size_t* __idx = 0, int __base = 10)
+  { return __gnu_cxx::__stoa(&std::strtol, "stol", __str.c_str(),
+        __idx, __base); }
+
+  inline unsigned long
+  stoul(const string& __str, size_t* __idx = 0, int __base = 10)
+  { return __gnu_cxx::__stoa(&std::strtoul, "stoul", __str.c_str(),
+        __idx, __base); }
+
+  inline long long
+  stoll(const string& __str, size_t* __idx = 0, int __base = 10)
+  { return __gnu_cxx::__stoa(&std::strtoll, "stoll", __str.c_str(),
+        __idx, __base); }
+
+  inline unsigned long long
+  stoull(const string& __str, size_t* __idx = 0, int __base = 10)
+  { return __gnu_cxx::__stoa(&std::strtoull, "stoull", __str.c_str(),
+        __idx, __base); }
+
+
+  inline float
+  stof(const string& __str, size_t* __idx = 0)
+  { return __gnu_cxx::__stoa(&std::strtof, "stof", __str.c_str(), __idx); }
+
+  inline double
+  stod(const string& __str, size_t* __idx = 0)
+  { return __gnu_cxx::__stoa(&std::strtod, "stod", __str.c_str(), __idx); }
+
+  inline long double
+  stold(const string& __str, size_t* __idx = 0)
+  { return __gnu_cxx::__stoa(&std::strtold, "stold", __str.c_str(), __idx); }
+
+
+
+
+
+
+  inline string
+  to_string(int __val)
+  { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, 4 * sizeof(int),
+        "%d", __val); }
+
+  inline string
+  to_string(unsigned __val)
+  { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf,
+        4 * sizeof(unsigned),
+        "%u", __val); }
+
+  inline string
+  to_string(long __val)
+  { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, 4 * sizeof(long),
+        "%ld", __val); }
+
+  inline string
+  to_string(unsigned long __val)
+  { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf,
+        4 * sizeof(unsigned long),
+        "%lu", __val); }
+
+  inline string
+  to_string(long long __val)
+  { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf,
+        4 * sizeof(long long),
+        "%lld", __val); }
+
+  inline string
+  to_string(unsigned long long __val)
+  { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf,
+        4 * sizeof(unsigned long long),
+        "%llu", __val); }
+
+  inline string
+  to_string(float __val)
+  {
+    const int __n =
+      __gnu_cxx::__numeric_traits<float>::__max_exponent10 + 20;
+    return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, __n,
+        "%f", __val);
+  }
+
+  inline string
+  to_string(double __val)
+  {
+    const int __n =
+      __gnu_cxx::__numeric_traits<double>::__max_exponent10 + 20;
+    return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, __n,
+        "%f", __val);
+  }
+
+  inline string
+  to_string(long double __val)
+  {
+    const int __n =
+      __gnu_cxx::__numeric_traits<long double>::__max_exponent10 + 20;
+    return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, __n,
+        "%Lf", __val);
+  }
+
+
+
+  inline int
+  stoi(const wstring& __str, size_t* __idx = 0, int __base = 10)
+  { return __gnu_cxx::__stoa<long, int>(&std::wcstol, "stoi", __str.c_str(),
+     __idx, __base); }
+
+  inline long
+  stol(const wstring& __str, size_t* __idx = 0, int __base = 10)
+  { return __gnu_cxx::__stoa(&std::wcstol, "stol", __str.c_str(),
+        __idx, __base); }
+
+  inline unsigned long
+  stoul(const wstring& __str, size_t* __idx = 0, int __base = 10)
+  { return __gnu_cxx::__stoa(&std::wcstoul, "stoul", __str.c_str(),
+        __idx, __base); }
+
+  inline long long
+  stoll(const wstring& __str, size_t* __idx = 0, int __base = 10)
+  { return __gnu_cxx::__stoa(&std::wcstoll, "stoll", __str.c_str(),
+        __idx, __base); }
+
+  inline unsigned long long
+  stoull(const wstring& __str, size_t* __idx = 0, int __base = 10)
+  { return __gnu_cxx::__stoa(&std::wcstoull, "stoull", __str.c_str(),
+        __idx, __base); }
+
+
+  inline float
+  stof(const wstring& __str, size_t* __idx = 0)
+  { return __gnu_cxx::__stoa(&std::wcstof, "stof", __str.c_str(), __idx); }
+
+  inline double
+  stod(const wstring& __str, size_t* __idx = 0)
+  { return __gnu_cxx::__stoa(&std::wcstod, "stod", __str.c_str(), __idx); }
+
+  inline long double
+  stold(const wstring& __str, size_t* __idx = 0)
+  { return __gnu_cxx::__stoa(&std::wcstold, "stold", __str.c_str(), __idx); }
+
+
+
+  inline wstring
+  to_wstring(int __val)
+  { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, 4 * sizeof(int),
+         L"%d", __val); }
+
+  inline wstring
+  to_wstring(unsigned __val)
+  { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf,
+         4 * sizeof(unsigned),
+         L"%u", __val); }
+
+  inline wstring
+  to_wstring(long __val)
+  { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, 4 * sizeof(long),
+         L"%ld", __val); }
+
+  inline wstring
+  to_wstring(unsigned long __val)
+  { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf,
+         4 * sizeof(unsigned long),
+         L"%lu", __val); }
+
+  inline wstring
+  to_wstring(long long __val)
+  { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf,
+         4 * sizeof(long long),
+         L"%lld", __val); }
+
+  inline wstring
+  to_wstring(unsigned long long __val)
+  { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf,
+         4 * sizeof(unsigned long long),
+         L"%llu", __val); }
+
+  inline wstring
+  to_wstring(float __val)
+  {
+    const int __n =
+      __gnu_cxx::__numeric_traits<float>::__max_exponent10 + 20;
+    return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, __n,
+         L"%f", __val);
+  }
+
+  inline wstring
+  to_wstring(double __val)
+  {
+    const int __n =
+      __gnu_cxx::__numeric_traits<double>::__max_exponent10 + 20;
+    return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, __n,
+         L"%f", __val);
+  }
+
+  inline wstring
+  to_wstring(long double __val)
+  {
+    const int __n =
+      __gnu_cxx::__numeric_traits<long double>::__max_exponent10 + 20;
+    return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, __n,
+         L"%Lf", __val);
+  }
+
+
+
+}
+
+}
+
+
+
+
+
+       
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _Result, typename _Arg>
+    struct __hash_base
+    {
+      typedef _Result result_type ;
+      typedef _Arg argument_type ;
+    };
+
+
+  template<typename _Tp>
+    struct hash;
+
+  template<typename _Tp, typename = void>
+    struct __poison_hash
+    {
+      static constexpr bool __enable_hash_call = false;
+    private:
+
+      __poison_hash(__poison_hash&&);
+      ~__poison_hash();
+    };
+
+  template<typename _Tp>
+    struct __poison_hash<_Tp, __void_t<decltype(hash<_Tp>()(declval<_Tp>()))>>
+    {
+      static constexpr bool __enable_hash_call = true;
+    };
+
+
+  template<typename _Tp, bool = is_enum<_Tp>::value>
+    struct __hash_enum
+    {
+    private:
+
+      __hash_enum(__hash_enum&&);
+      ~__hash_enum();
+    };
+
+
+  template<typename _Tp>
+    struct __hash_enum<_Tp, true> : public __hash_base<size_t, _Tp>
+    {
+      size_t
+      operator()(_Tp __val) const noexcept
+      {
+       using __type = typename underlying_type<_Tp>::type;
+       return hash<__type>{}(static_cast<__type>(__val));
+      }
+    };
+
+
+
+  template<typename _Tp>
+    struct hash : __hash_enum<_Tp>
+    { };
+
+
+  template<typename _Tp>
+    struct hash<_Tp*> : public __hash_base<size_t, _Tp*>
+    {
+      size_t
+      operator()(_Tp* __p) const noexcept
+      { return reinterpret_cast<size_t>(__p); }
+    };
+  template<> struct hash<bool> : public __hash_base<size_t, bool> { size_t operator()(bool __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<char> : public __hash_base<size_t, char> { size_t operator()(char __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<signed char> : public __hash_base<size_t, signed char> { size_t operator()(signed char __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<unsigned char> : public __hash_base<size_t, unsigned char> { size_t operator()(unsigned char __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<wchar_t> : public __hash_base<size_t, wchar_t> { size_t operator()(wchar_t __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<char16_t> : public __hash_base<size_t, char16_t> { size_t operator()(char16_t __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<char32_t> : public __hash_base<size_t, char32_t> { size_t operator()(char32_t __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<short> : public __hash_base<size_t, short> { size_t operator()(short __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<int> : public __hash_base<size_t, int> { size_t operator()(int __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<long> : public __hash_base<size_t, long> { size_t operator()(long __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<long long> : public __hash_base<size_t, long long> { size_t operator()(long long __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<unsigned short> : public __hash_base<size_t, unsigned short> { size_t operator()(unsigned short __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<unsigned int> : public __hash_base<size_t, unsigned int> { size_t operator()(unsigned int __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<unsigned long> : public __hash_base<size_t, unsigned long> { size_t operator()(unsigned long __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<unsigned long long> : public __hash_base<size_t, unsigned long long> { size_t operator()(unsigned long long __val) const noexcept { return static_cast<size_t>(__val); } };
+
+
+  template<> struct hash<__int128> : public __hash_base<size_t, __int128> { size_t operator()(__int128 __val) const noexcept { return static_cast<size_t>(__val); } };
+  template<> struct hash<__int128 unsigned> : public __hash_base<size_t, __int128 unsigned> { size_t operator()(__int128 unsigned __val) const noexcept { return static_cast<size_t>(__val); } };
+  struct _Hash_impl
+  {
+    static size_t
+    hash(const void* __ptr, size_t __clength,
+  size_t __seed = static_cast<size_t>(0xc70f6907UL))
+    { return _Hash_bytes(__ptr, __clength, __seed); }
+
+    template<typename _Tp>
+      static size_t
+      hash(const _Tp& __val)
+      { return hash(&__val, sizeof(__val)); }
+
+    template<typename _Tp>
+      static size_t
+      __hash_combine(const _Tp& __val, size_t __hash)
+      { return hash(&__val, sizeof(__val), __hash); }
+  };
+
+
+  struct _Fnv_hash_impl
+  {
+    static size_t
+    hash(const void* __ptr, size_t __clength,
+  size_t __seed = static_cast<size_t>(2166136261UL))
+    { return _Fnv_hash_bytes(__ptr, __clength, __seed); }
+
+    template<typename _Tp>
+      static size_t
+      hash(const _Tp& __val)
+      { return hash(&__val, sizeof(__val)); }
+
+    template<typename _Tp>
+      static size_t
+      __hash_combine(const _Tp& __val, size_t __hash)
+      { return hash(&__val, sizeof(__val), __hash); }
+  };
+
+
+  template<>
+    struct hash<float> : public __hash_base<size_t, float>
+    {
+      size_t
+      operator()(float __val) const noexcept
+      {
+
+ return __val != 0.0f ? std::_Hash_impl::hash(__val) : 0;
+      }
+    };
+
+
+  template<>
+    struct hash<double> : public __hash_base<size_t, double>
+    {
+      size_t
+      operator()(double __val) const noexcept
+      {
+
+ return __val != 0.0 ? std::_Hash_impl::hash(__val) : 0;
+      }
+    };
+
+
+  template<>
+    struct hash<long double>
+    : public __hash_base<size_t, long double>
+    {
+      __attribute__ ((__pure__)) size_t
+      operator()(long double __val) const noexcept;
+    };
+
+
+
+
+
+
+
+  template<typename _Hash>
+    struct __is_fast_hash : public std::true_type
+    { };
+
+  template<>
+    struct __is_fast_hash<hash<long double>> : public std::false_type
+    { };
+
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+  template<>
+    struct hash<string>
+    : public __hash_base<size_t, string>
+    {
+      size_t
+      operator()(const string& __s) const noexcept
+      { return std::_Hash_impl::hash(__s.data(), __s.length()); }
+    };
+
+  template<>
+    struct __is_fast_hash<hash<string>> : std::false_type
+    { };
+
+
+
+  template<>
+    struct hash<wstring>
+    : public __hash_base<size_t, wstring>
+    {
+      size_t
+      operator()(const wstring& __s) const noexcept
+      { return std::_Hash_impl::hash(__s.data(),
+                                     __s.length() * sizeof(wchar_t)); }
+    };
+
+  template<>
+    struct __is_fast_hash<hash<wstring>> : std::false_type
+    { };
+
+
+
+
+
+  template<>
+    struct hash<u16string>
+    : public __hash_base<size_t, u16string>
+    {
+      size_t
+      operator()(const u16string& __s) const noexcept
+      { return std::_Hash_impl::hash(__s.data(),
+                                     __s.length() * sizeof(char16_t)); }
+    };
+
+  template<>
+    struct __is_fast_hash<hash<u16string>> : std::false_type
+    { };
+
+
+  template<>
+    struct hash<u32string>
+    : public __hash_base<size_t, u32string>
+    {
+      size_t
+      operator()(const u32string& __s) const noexcept
+      { return std::_Hash_impl::hash(__s.data(),
+                                     __s.length() * sizeof(char32_t)); }
+    };
+
+  template<>
+    struct __is_fast_hash<hash<u32string>> : std::false_type
+    { };
+
+
+
+
+
+
+  inline namespace literals
+  {
+  inline namespace string_literals
+  {
+    __attribute ((__abi_tag__ ("cxx11")))
+    inline basic_string<char>
+    operator""s(const char* __str, size_t __len)
+    { return basic_string<char>{__str, __len}; }
+
+
+    __attribute ((__abi_tag__ ("cxx11")))
+    inline basic_string<wchar_t>
+    operator""s(const wchar_t* __str, size_t __len)
+    { return basic_string<wchar_t>{__str, __len}; }
+
+
+
+    __attribute ((__abi_tag__ ("cxx11")))
+    inline basic_string<char16_t>
+    operator""s(const char16_t* __str, size_t __len)
+    { return basic_string<char16_t>{__str, __len}; }
+
+    __attribute ((__abi_tag__ ("cxx11")))
+    inline basic_string<char32_t>
+    operator""s(const char32_t* __str, size_t __len)
+    { return basic_string<char32_t>{__str, __len}; }
+
+
+  }
+  }
+
+
+
+
+}
+       
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    const typename basic_string<_CharT, _Traits, _Alloc>::size_type
+    basic_string<_CharT, _Traits, _Alloc>::npos;
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    void
+    basic_string<_CharT, _Traits, _Alloc>::
+    swap(basic_string& __s) noexcept
+    {
+      if (this == &__s)
+ return;
+
+      _Alloc_traits::_S_on_swap(_M_get_allocator(), __s._M_get_allocator());
+
+      if (_M_is_local())
+ if (__s._M_is_local())
+   {
+     if (length() && __s.length())
+       {
+  _CharT __tmp_data[_S_local_capacity + 1];
+  traits_type::copy(__tmp_data, __s._M_local_buf,
+      _S_local_capacity + 1);
+  traits_type::copy(__s._M_local_buf, _M_local_buf,
+      _S_local_capacity + 1);
+  traits_type::copy(_M_local_buf, __tmp_data,
+      _S_local_capacity + 1);
+       }
+     else if (__s.length())
+       {
+  traits_type::copy(_M_local_buf, __s._M_local_buf,
+      _S_local_capacity + 1);
+  _M_length(__s.length());
+  __s._M_set_length(0);
+  return;
+       }
+     else if (length())
+       {
+  traits_type::copy(__s._M_local_buf, _M_local_buf,
+      _S_local_capacity + 1);
+  __s._M_length(length());
+  _M_set_length(0);
+  return;
+       }
+   }
+ else
+   {
+     const size_type __tmp_capacity = __s._M_allocated_capacity;
+     traits_type::copy(__s._M_local_buf, _M_local_buf,
+         _S_local_capacity + 1);
+     _M_data(__s._M_data());
+     __s._M_data(__s._M_local_buf);
+     _M_capacity(__tmp_capacity);
+   }
+      else
+ {
+   const size_type __tmp_capacity = _M_allocated_capacity;
+   if (__s._M_is_local())
+     {
+       traits_type::copy(_M_local_buf, __s._M_local_buf,
+    _S_local_capacity + 1);
+       __s._M_data(_M_data());
+       _M_data(_M_local_buf);
+     }
+   else
+     {
+       pointer __tmp_ptr = _M_data();
+       _M_data(__s._M_data());
+       __s._M_data(__tmp_ptr);
+       _M_capacity(__s._M_allocated_capacity);
+     }
+   __s._M_capacity(__tmp_capacity);
+ }
+
+      const size_type __tmp_length = length();
+      _M_length(__s.length());
+      __s._M_length(__tmp_length);
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    typename basic_string<_CharT, _Traits, _Alloc>::pointer
+    basic_string<_CharT, _Traits, _Alloc>::
+    _M_create(size_type& __capacity, size_type __old_capacity)
+    {
+
+
+      if (__capacity > max_size())
+ std::__throw_length_error(("basic_string::_M_create"));
+
+
+
+
+      if (__capacity > __old_capacity && __capacity < 2 * __old_capacity)
+ {
+   __capacity = 2 * __old_capacity;
+
+   if (__capacity > max_size())
+     __capacity = max_size();
+ }
+
+
+
+      return _Alloc_traits::allocate(_M_get_allocator(), __capacity + 1);
+    }
+
+
+
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    template<typename _InIterator>
+      void
+      basic_string<_CharT, _Traits, _Alloc>::
+      _M_construct(_InIterator __beg, _InIterator __end,
+     std::input_iterator_tag)
+      {
+ size_type __len = 0;
+ size_type __capacity = size_type(_S_local_capacity);
+
+ while (__beg != __end && __len < __capacity)
+   {
+     _M_data()[__len++] = *__beg;
+     ++__beg;
+   }
+
+ try
+   {
+     while (__beg != __end)
+       {
+  if (__len == __capacity)
+    {
+
+      __capacity = __len + 1;
+      pointer __another = _M_create(__capacity, __len);
+      this->_S_copy(__another, _M_data(), __len);
+      _M_dispose();
+      _M_data(__another);
+      _M_capacity(__capacity);
+    }
+  _M_data()[__len++] = *__beg;
+  ++__beg;
+       }
+   }
+ catch(...)
+   {
+     _M_dispose();
+     throw;
+   }
+
+ _M_set_length(__len);
+      }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    template<typename _InIterator>
+      void
+      basic_string<_CharT, _Traits, _Alloc>::
+      _M_construct(_InIterator __beg, _InIterator __end,
+     std::forward_iterator_tag)
+      {
+
+ if (__gnu_cxx::__is_null_pointer(__beg) && __beg != __end)
+   std::__throw_logic_error(("basic_string::" "_M_construct null not valid")
+                                         );
+
+ size_type __dnew = static_cast<size_type>(std::distance(__beg, __end));
+
+ if (__dnew > size_type(_S_local_capacity))
+   {
+     _M_data(_M_create(__dnew, size_type(0)));
+     _M_capacity(__dnew);
+   }
+
+
+ try
+   { this->_S_copy_chars(_M_data(), __beg, __end); }
+ catch(...)
+   {
+     _M_dispose();
+     throw;
+   }
+
+ _M_set_length(__dnew);
+      }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    void
+    basic_string<_CharT, _Traits, _Alloc>::
+    _M_construct(size_type __n, _CharT __c)
+    {
+      if (__n > size_type(_S_local_capacity))
+ {
+   _M_data(_M_create(__n, size_type(0)));
+   _M_capacity(__n);
+ }
+
+      if (__n)
+ this->_S_assign(_M_data(), __n, __c);
+
+      _M_set_length(__n);
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    void
+    basic_string<_CharT, _Traits, _Alloc>::
+    _M_assign(const basic_string& __str)
+    {
+      if (this != &__str)
+ {
+   const size_type __rsize = __str.length();
+   const size_type __capacity = capacity();
+
+   if (__rsize > __capacity)
+     {
+       size_type __new_capacity = __rsize;
+       pointer __tmp = _M_create(__new_capacity, __capacity);
+       _M_dispose();
+       _M_data(__tmp);
+       _M_capacity(__new_capacity);
+     }
+
+   if (__rsize)
+     this->_S_copy(_M_data(), __str._M_data(), __rsize);
+
+   _M_set_length(__rsize);
+ }
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    void
+    basic_string<_CharT, _Traits, _Alloc>::
+    reserve(size_type __res)
+    {
+
+      if (__res < length())
+ __res = length();
+
+      const size_type __capacity = capacity();
+      if (__res != __capacity)
+ {
+   if (__res > __capacity
+       || __res > size_type(_S_local_capacity))
+     {
+       pointer __tmp = _M_create(__res, __capacity);
+       this->_S_copy(__tmp, _M_data(), length() + 1);
+       _M_dispose();
+       _M_data(__tmp);
+       _M_capacity(__res);
+     }
+   else if (!_M_is_local())
+     {
+       this->_S_copy(_M_local_data(), _M_data(), length() + 1);
+       _M_destroy(__capacity);
+       _M_data(_M_local_data());
+     }
+ }
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    void
+    basic_string<_CharT, _Traits, _Alloc>::
+    _M_mutate(size_type __pos, size_type __len1, const _CharT* __s,
+       size_type __len2)
+    {
+      const size_type __how_much = length() - __pos - __len1;
+
+      size_type __new_capacity = length() + __len2 - __len1;
+      pointer __r = _M_create(__new_capacity, capacity());
+
+      if (__pos)
+ this->_S_copy(__r, _M_data(), __pos);
+      if (__s && __len2)
+ this->_S_copy(__r + __pos, __s, __len2);
+      if (__how_much)
+ this->_S_copy(__r + __pos + __len2,
+        _M_data() + __pos + __len1, __how_much);
+
+      _M_dispose();
+      _M_data(__r);
+      _M_capacity(__new_capacity);
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    void
+    basic_string<_CharT, _Traits, _Alloc>::
+    _M_erase(size_type __pos, size_type __n)
+    {
+      const size_type __how_much = length() - __pos - __n;
+
+      if (__how_much && __n)
+ this->_S_move(_M_data() + __pos, _M_data() + __pos + __n, __how_much);
+
+      _M_set_length(length() - __n);
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    void
+    basic_string<_CharT, _Traits, _Alloc>::
+    resize(size_type __n, _CharT __c)
+    {
+      const size_type __size = this->size();
+      if (__size < __n)
+ this->append(__n - __size, __c);
+      else if (__n < __size)
+ this->_M_set_length(__n);
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    basic_string<_CharT, _Traits, _Alloc>&
+    basic_string<_CharT, _Traits, _Alloc>::
+    _M_append(const _CharT* __s, size_type __n)
+    {
+      const size_type __len = __n + this->size();
+
+      if (__len <= this->capacity())
+ {
+   if (__n)
+     this->_S_copy(this->_M_data() + this->size(), __s, __n);
+ }
+      else
+ this->_M_mutate(this->size(), size_type(0), __s, __n);
+
+      this->_M_set_length(__len);
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    template<typename _InputIterator>
+      basic_string<_CharT, _Traits, _Alloc>&
+      basic_string<_CharT, _Traits, _Alloc>::
+      _M_replace_dispatch(const_iterator __i1, const_iterator __i2,
+     _InputIterator __k1, _InputIterator __k2,
+     std::__false_type)
+      {
+ const basic_string __s(__k1, __k2);
+ const size_type __n1 = __i2 - __i1;
+ return _M_replace(__i1 - begin(), __n1, __s._M_data(),
+     __s.size());
+      }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    basic_string<_CharT, _Traits, _Alloc>&
+    basic_string<_CharT, _Traits, _Alloc>::
+    _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2,
+     _CharT __c)
+    {
+      _M_check_length(__n1, __n2, "basic_string::_M_replace_aux");
+
+      const size_type __old_size = this->size();
+      const size_type __new_size = __old_size + __n2 - __n1;
+
+      if (__new_size <= this->capacity())
+ {
+   pointer __p = this->_M_data() + __pos1;
+
+   const size_type __how_much = __old_size - __pos1 - __n1;
+   if (__how_much && __n1 != __n2)
+     this->_S_move(__p + __n2, __p + __n1, __how_much);
+ }
+      else
+ this->_M_mutate(__pos1, __n1, 0, __n2);
+
+      if (__n2)
+ this->_S_assign(this->_M_data() + __pos1, __n2, __c);
+
+      this->_M_set_length(__new_size);
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    basic_string<_CharT, _Traits, _Alloc>&
+    basic_string<_CharT, _Traits, _Alloc>::
+    _M_replace(size_type __pos, size_type __len1, const _CharT* __s,
+        const size_type __len2)
+    {
+      _M_check_length(__len1, __len2, "basic_string::_M_replace");
+
+      const size_type __old_size = this->size();
+      const size_type __new_size = __old_size + __len2 - __len1;
+
+      if (__new_size <= this->capacity())
+ {
+   pointer __p = this->_M_data() + __pos;
+
+   const size_type __how_much = __old_size - __pos - __len1;
+   if (_M_disjunct(__s))
+     {
+       if (__how_much && __len1 != __len2)
+  this->_S_move(__p + __len2, __p + __len1, __how_much);
+       if (__len2)
+  this->_S_copy(__p, __s, __len2);
+     }
+   else
+     {
+
+       if (__len2 && __len2 <= __len1)
+  this->_S_move(__p, __s, __len2);
+       if (__how_much && __len1 != __len2)
+  this->_S_move(__p + __len2, __p + __len1, __how_much);
+       if (__len2 > __len1)
+  {
+    if (__s + __len2 <= __p + __len1)
+      this->_S_move(__p, __s, __len2);
+    else if (__s >= __p + __len1)
+      this->_S_copy(__p, __s + __len2 - __len1, __len2);
+    else
+      {
+        const size_type __nleft = (__p + __len1) - __s;
+        this->_S_move(__p, __s, __nleft);
+        this->_S_copy(__p + __nleft, __p + __len2,
+        __len2 - __nleft);
+      }
+  }
+     }
+ }
+      else
+ this->_M_mutate(__pos, __len1, __s, __len2);
+
+      this->_M_set_length(__new_size);
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    typename basic_string<_CharT, _Traits, _Alloc>::size_type
+    basic_string<_CharT, _Traits, _Alloc>::
+    copy(_CharT* __s, size_type __n, size_type __pos) const
+    {
+      _M_check(__pos, "basic_string::copy");
+      __n = _M_limit(__pos, __n);
+      ;
+      if (__n)
+ _S_copy(__s, _M_data() + __pos, __n);
+
+      return __n;
+    }
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    basic_string<_CharT, _Traits, _Alloc>
+    operator+(const _CharT* __lhs,
+       const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    {
+      ;
+      typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
+      typedef typename __string_type::size_type __size_type;
+      const __size_type __len = _Traits::length(__lhs);
+      __string_type __str;
+      __str.reserve(__len + __rhs.size());
+      __str.append(__lhs, __len);
+      __str.append(__rhs);
+      return __str;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    basic_string<_CharT, _Traits, _Alloc>
+    operator+(_CharT __lhs, const basic_string<_CharT, _Traits, _Alloc>& __rhs)
+    {
+      typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
+      typedef typename __string_type::size_type __size_type;
+      __string_type __str;
+      const __size_type __len = __rhs.size();
+      __str.reserve(__len + 1);
+      __str.append(__size_type(1), __lhs);
+      __str.append(__rhs);
+      return __str;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    typename basic_string<_CharT, _Traits, _Alloc>::size_type
+    basic_string<_CharT, _Traits, _Alloc>::
+    find(const _CharT* __s, size_type __pos, size_type __n) const
+    noexcept
+    {
+      ;
+      const size_type __size = this->size();
+
+      if (__n == 0)
+ return __pos <= __size ? __pos : npos;
+      if (__pos >= __size)
+ return npos;
+
+      const _CharT __elem0 = __s[0];
+      const _CharT* const __data = data();
+      const _CharT* __first = __data + __pos;
+      const _CharT* const __last = __data + __size;
+      size_type __len = __size - __pos;
+
+      while (__len >= __n)
+ {
+
+   __first = traits_type::find(__first, __len - __n + 1, __elem0);
+   if (!__first)
+     return npos;
+
+
+
+   if (traits_type::compare(__first, __s, __n) == 0)
+     return __first - __data;
+   __len = __last - ++__first;
+ }
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    typename basic_string<_CharT, _Traits, _Alloc>::size_type
+    basic_string<_CharT, _Traits, _Alloc>::
+    find(_CharT __c, size_type __pos) const noexcept
+    {
+      size_type __ret = npos;
+      const size_type __size = this->size();
+      if (__pos < __size)
+ {
+   const _CharT* __data = _M_data();
+   const size_type __n = __size - __pos;
+   const _CharT* __p = traits_type::find(__data + __pos, __n, __c);
+   if (__p)
+     __ret = __p - __data;
+ }
+      return __ret;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    typename basic_string<_CharT, _Traits, _Alloc>::size_type
+    basic_string<_CharT, _Traits, _Alloc>::
+    rfind(const _CharT* __s, size_type __pos, size_type __n) const
+    noexcept
+    {
+      ;
+      const size_type __size = this->size();
+      if (__n <= __size)
+ {
+   __pos = std::min(size_type(__size - __n), __pos);
+   const _CharT* __data = _M_data();
+   do
+     {
+       if (traits_type::compare(__data + __pos, __s, __n) == 0)
+  return __pos;
+     }
+   while (__pos-- > 0);
+ }
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    typename basic_string<_CharT, _Traits, _Alloc>::size_type
+    basic_string<_CharT, _Traits, _Alloc>::
+    rfind(_CharT __c, size_type __pos) const noexcept
+    {
+      size_type __size = this->size();
+      if (__size)
+ {
+   if (--__size > __pos)
+     __size = __pos;
+   for (++__size; __size-- > 0; )
+     if (traits_type::eq(_M_data()[__size], __c))
+       return __size;
+ }
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    typename basic_string<_CharT, _Traits, _Alloc>::size_type
+    basic_string<_CharT, _Traits, _Alloc>::
+    find_first_of(const _CharT* __s, size_type __pos, size_type __n) const
+    noexcept
+    {
+      ;
+      for (; __n && __pos < this->size(); ++__pos)
+ {
+   const _CharT* __p = traits_type::find(__s, __n, _M_data()[__pos]);
+   if (__p)
+     return __pos;
+ }
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    typename basic_string<_CharT, _Traits, _Alloc>::size_type
+    basic_string<_CharT, _Traits, _Alloc>::
+    find_last_of(const _CharT* __s, size_type __pos, size_type __n) const
+    noexcept
+    {
+      ;
+      size_type __size = this->size();
+      if (__size && __n)
+ {
+   if (--__size > __pos)
+     __size = __pos;
+   do
+     {
+       if (traits_type::find(__s, __n, _M_data()[__size]))
+  return __size;
+     }
+   while (__size-- != 0);
+ }
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    typename basic_string<_CharT, _Traits, _Alloc>::size_type
+    basic_string<_CharT, _Traits, _Alloc>::
+    find_first_not_of(const _CharT* __s, size_type __pos, size_type __n) const
+    noexcept
+    {
+      ;
+      for (; __pos < this->size(); ++__pos)
+ if (!traits_type::find(__s, __n, _M_data()[__pos]))
+   return __pos;
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    typename basic_string<_CharT, _Traits, _Alloc>::size_type
+    basic_string<_CharT, _Traits, _Alloc>::
+    find_first_not_of(_CharT __c, size_type __pos) const noexcept
+    {
+      for (; __pos < this->size(); ++__pos)
+ if (!traits_type::eq(_M_data()[__pos], __c))
+   return __pos;
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    typename basic_string<_CharT, _Traits, _Alloc>::size_type
+    basic_string<_CharT, _Traits, _Alloc>::
+    find_last_not_of(const _CharT* __s, size_type __pos, size_type __n) const
+    noexcept
+    {
+      ;
+      size_type __size = this->size();
+      if (__size)
+ {
+   if (--__size > __pos)
+     __size = __pos;
+   do
+     {
+       if (!traits_type::find(__s, __n, _M_data()[__size]))
+  return __size;
+     }
+   while (__size--);
+ }
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    typename basic_string<_CharT, _Traits, _Alloc>::size_type
+    basic_string<_CharT, _Traits, _Alloc>::
+    find_last_not_of(_CharT __c, size_type __pos) const noexcept
+    {
+      size_type __size = this->size();
+      if (__size)
+ {
+   if (--__size > __pos)
+     __size = __pos;
+   do
+     {
+       if (!traits_type::eq(_M_data()[__size], __c))
+  return __size;
+     }
+   while (__size--);
+ }
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    int
+    basic_string<_CharT, _Traits, _Alloc>::
+    compare(size_type __pos, size_type __n, const basic_string& __str) const
+    {
+      _M_check(__pos, "basic_string::compare");
+      __n = _M_limit(__pos, __n);
+      const size_type __osize = __str.size();
+      const size_type __len = std::min(__n, __osize);
+      int __r = traits_type::compare(_M_data() + __pos, __str.data(), __len);
+      if (!__r)
+ __r = _S_compare(__n, __osize);
+      return __r;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    int
+    basic_string<_CharT, _Traits, _Alloc>::
+    compare(size_type __pos1, size_type __n1, const basic_string& __str,
+     size_type __pos2, size_type __n2) const
+    {
+      _M_check(__pos1, "basic_string::compare");
+      __str._M_check(__pos2, "basic_string::compare");
+      __n1 = _M_limit(__pos1, __n1);
+      __n2 = __str._M_limit(__pos2, __n2);
+      const size_type __len = std::min(__n1, __n2);
+      int __r = traits_type::compare(_M_data() + __pos1,
+         __str.data() + __pos2, __len);
+      if (!__r)
+ __r = _S_compare(__n1, __n2);
+      return __r;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    int
+    basic_string<_CharT, _Traits, _Alloc>::
+    compare(const _CharT* __s) const noexcept
+    {
+      ;
+      const size_type __size = this->size();
+      const size_type __osize = traits_type::length(__s);
+      const size_type __len = std::min(__size, __osize);
+      int __r = traits_type::compare(_M_data(), __s, __len);
+      if (!__r)
+ __r = _S_compare(__size, __osize);
+      return __r;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    int
+    basic_string <_CharT, _Traits, _Alloc>::
+    compare(size_type __pos, size_type __n1, const _CharT* __s) const
+    {
+      ;
+      _M_check(__pos, "basic_string::compare");
+      __n1 = _M_limit(__pos, __n1);
+      const size_type __osize = traits_type::length(__s);
+      const size_type __len = std::min(__n1, __osize);
+      int __r = traits_type::compare(_M_data() + __pos, __s, __len);
+      if (!__r)
+ __r = _S_compare(__n1, __osize);
+      return __r;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    int
+    basic_string <_CharT, _Traits, _Alloc>::
+    compare(size_type __pos, size_type __n1, const _CharT* __s,
+     size_type __n2) const
+    {
+      ;
+      _M_check(__pos, "basic_string::compare");
+      __n1 = _M_limit(__pos, __n1);
+      const size_type __len = std::min(__n1, __n2);
+      int __r = traits_type::compare(_M_data() + __pos, __s, __len);
+      if (!__r)
+ __r = _S_compare(__n1, __n2);
+      return __r;
+    }
+
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    basic_istream<_CharT, _Traits>&
+    operator>>(basic_istream<_CharT, _Traits>& __in,
+        basic_string<_CharT, _Traits, _Alloc>& __str)
+    {
+      typedef basic_istream<_CharT, _Traits> __istream_type;
+      typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
+      typedef typename __istream_type::ios_base __ios_base;
+      typedef typename __istream_type::int_type __int_type;
+      typedef typename __string_type::size_type __size_type;
+      typedef ctype<_CharT> __ctype_type;
+      typedef typename __ctype_type::ctype_base __ctype_base;
+
+      __size_type __extracted = 0;
+      typename __ios_base::iostate __err = __ios_base::goodbit;
+      typename __istream_type::sentry __cerb(__in, false);
+      if (__cerb)
+ {
+   try
+     {
+
+       __str.erase();
+       _CharT __buf[128];
+       __size_type __len = 0;
+       const streamsize __w = __in.width();
+       const __size_type __n = __w > 0 ? static_cast<__size_type>(__w)
+                                : __str.max_size();
+       const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc());
+       const __int_type __eof = _Traits::eof();
+       __int_type __c = __in.rdbuf()->sgetc();
+
+       while (__extracted < __n
+       && !_Traits::eq_int_type(__c, __eof)
+       && !__ct.is(__ctype_base::space,
+     _Traits::to_char_type(__c)))
+  {
+    if (__len == sizeof(__buf) / sizeof(_CharT))
+      {
+        __str.append(__buf, sizeof(__buf) / sizeof(_CharT));
+        __len = 0;
+      }
+    __buf[__len++] = _Traits::to_char_type(__c);
+    ++__extracted;
+    __c = __in.rdbuf()->snextc();
+  }
+       __str.append(__buf, __len);
+
+       if (_Traits::eq_int_type(__c, __eof))
+  __err |= __ios_base::eofbit;
+       __in.width(0);
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       __in._M_setstate(__ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     {
+
+
+
+       __in._M_setstate(__ios_base::badbit);
+     }
+ }
+
+      if (!__extracted)
+ __err |= __ios_base::failbit;
+      if (__err)
+ __in.setstate(__err);
+      return __in;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    basic_istream<_CharT, _Traits>&
+    getline(basic_istream<_CharT, _Traits>& __in,
+     basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim)
+    {
+      typedef basic_istream<_CharT, _Traits> __istream_type;
+      typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
+      typedef typename __istream_type::ios_base __ios_base;
+      typedef typename __istream_type::int_type __int_type;
+      typedef typename __string_type::size_type __size_type;
+
+      __size_type __extracted = 0;
+      const __size_type __n = __str.max_size();
+      typename __ios_base::iostate __err = __ios_base::goodbit;
+      typename __istream_type::sentry __cerb(__in, true);
+      if (__cerb)
+ {
+   try
+     {
+       __str.erase();
+       const __int_type __idelim = _Traits::to_int_type(__delim);
+       const __int_type __eof = _Traits::eof();
+       __int_type __c = __in.rdbuf()->sgetc();
+
+       while (__extracted < __n
+       && !_Traits::eq_int_type(__c, __eof)
+       && !_Traits::eq_int_type(__c, __idelim))
+  {
+    __str += _Traits::to_char_type(__c);
+    ++__extracted;
+    __c = __in.rdbuf()->snextc();
+  }
+
+       if (_Traits::eq_int_type(__c, __eof))
+  __err |= __ios_base::eofbit;
+       else if (_Traits::eq_int_type(__c, __idelim))
+  {
+    ++__extracted;
+    __in.rdbuf()->sbumpc();
+  }
+       else
+  __err |= __ios_base::failbit;
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       __in._M_setstate(__ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     {
+
+
+
+       __in._M_setstate(__ios_base::badbit);
+     }
+ }
+      if (!__extracted)
+ __err |= __ios_base::failbit;
+      if (__err)
+ __in.setstate(__err);
+      return __in;
+    }
+
+
+
+
+  extern template class basic_string<char>;
+  extern template
+    basic_istream<char>&
+    operator>>(basic_istream<char>&, string&);
+  extern template
+    basic_ostream<char>&
+    operator<<(basic_ostream<char>&, const string&);
+  extern template
+    basic_istream<char>&
+    getline(basic_istream<char>&, string&, char);
+  extern template
+    basic_istream<char>&
+    getline(basic_istream<char>&, string&);
+
+
+  extern template class basic_string<wchar_t>;
+  extern template
+    basic_istream<wchar_t>&
+    operator>>(basic_istream<wchar_t>&, wstring&);
+  extern template
+    basic_ostream<wchar_t>&
+    operator<<(basic_ostream<wchar_t>&, const wstring&);
+  extern template
+    basic_istream<wchar_t>&
+    getline(basic_istream<wchar_t>&, wstring&, wchar_t);
+  extern template
+    basic_istream<wchar_t>&
+    getline(basic_istream<wchar_t>&, wstring&);
+
+
+
+
+}
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  class locale
+  {
+  public:
+
+
+    typedef int category;
+
+
+    class facet;
+    class id;
+    class _Impl;
+
+    friend class facet;
+    friend class _Impl;
+
+    template<typename _Facet>
+      friend bool
+      has_facet(const locale&) throw();
+
+    template<typename _Facet>
+      friend const _Facet&
+      use_facet(const locale&);
+
+    template<typename _Cache>
+      friend struct __use_cache;
+    static const category none = 0;
+    static const category ctype = 1L << 0;
+    static const category numeric = 1L << 1;
+    static const category collate = 1L << 2;
+    static const category time = 1L << 3;
+    static const category monetary = 1L << 4;
+    static const category messages = 1L << 5;
+    static const category all = (ctype | numeric | collate |
+        time | monetary | messages);
+    locale() throw();
+    locale(const locale& __other) throw();
+    explicit
+    locale(const char* __s);
+    locale(const locale& __base, const char* __s, category __cat);
+    explicit
+    locale(const std::string& __s) : locale(__s.c_str()) { }
+    locale(const locale& __base, const std::string& __s, category __cat)
+    : locale(__base, __s.c_str(), __cat) { }
+    locale(const locale& __base, const locale& __add, category __cat);
+    template<typename _Facet>
+      locale(const locale& __other, _Facet* __f);
+
+
+    ~locale() throw();
+    const locale&
+    operator=(const locale& __other) throw();
+    template<typename _Facet>
+      locale
+      combine(const locale& __other) const;
+
+
+
+
+
+
+    __attribute ((__abi_tag__ ("cxx11")))
+    string
+    name() const;
+    bool
+    operator==(const locale& __other) const throw();
+
+
+
+
+
+
+
+    bool
+    operator!=(const locale& __other) const throw()
+    { return !(this->operator==(__other)); }
+    template<typename _Char, typename _Traits, typename _Alloc>
+      bool
+      operator()(const basic_string<_Char, _Traits, _Alloc>& __s1,
+   const basic_string<_Char, _Traits, _Alloc>& __s2) const;
+    static locale
+    global(const locale& __loc);
+
+
+
+
+    static const locale&
+    classic();
+
+  private:
+
+    _Impl* _M_impl;
+
+
+    static _Impl* _S_classic;
+
+
+    static _Impl* _S_global;
+
+
+
+
+
+    static const char* const* const _S_categories;
+    enum { _S_categories_size = 6 + 6 };
+
+
+    static __gthread_once_t _S_once;
+
+
+    explicit
+    locale(_Impl*) throw();
+
+    static void
+    _S_initialize();
+
+    static void
+    _S_initialize_once() throw();
+
+    static category
+    _S_normalize_category(category);
+
+    void
+    _M_coalesce(const locale& __base, const locale& __add, category __cat);
+
+
+    static const id* const _S_twinned_facets[];
+
+  };
+  class locale::facet
+  {
+  private:
+    friend class locale;
+    friend class locale::_Impl;
+
+    mutable _Atomic_word _M_refcount;
+
+
+    static __c_locale _S_c_locale;
+
+
+    static const char _S_c_name[2];
+
+
+    static __gthread_once_t _S_once;
+
+
+    static void
+    _S_initialize_once();
+
+  protected:
+    explicit
+    facet(size_t __refs = 0) throw() : _M_refcount(__refs ? 1 : 0)
+    { }
+
+
+    virtual
+    ~facet();
+
+    static void
+    _S_create_c_locale(__c_locale& __cloc, const char* __s,
+         __c_locale __old = 0);
+
+    static __c_locale
+    _S_clone_c_locale(__c_locale& __cloc) throw();
+
+    static void
+    _S_destroy_c_locale(__c_locale& __cloc);
+
+    static __c_locale
+    _S_lc_ctype_c_locale(__c_locale __cloc, const char* __s);
+
+
+
+    static __c_locale
+    _S_get_c_locale();
+
+    __attribute__ ((__const__)) static const char*
+    _S_get_c_name() throw();
+    facet(const facet&) = delete;
+
+    facet&
+    operator=(const facet&) = delete;
+
+
+  private:
+    void
+    _M_add_reference() const throw()
+    { __gnu_cxx::__atomic_add_dispatch(&_M_refcount, 1); }
+
+    void
+    _M_remove_reference() const throw()
+    {
+
+      ;
+      if (__gnu_cxx::__exchange_and_add_dispatch(&_M_refcount, -1) == 1)
+ {
+          ;
+   try
+     { delete this; }
+   catch(...)
+     { }
+ }
+    }
+
+    const facet* _M_sso_shim(const id*) const;
+    const facet* _M_cow_shim(const id*) const;
+
+  protected:
+    class __shim;
+  };
+  class locale::id
+  {
+  private:
+    friend class locale;
+    friend class locale::_Impl;
+
+    template<typename _Facet>
+      friend const _Facet&
+      use_facet(const locale&);
+
+    template<typename _Facet>
+      friend bool
+      has_facet(const locale&) throw();
+
+
+
+
+    mutable size_t _M_index;
+
+
+    static _Atomic_word _S_refcount;
+
+    void
+    operator=(const id&);
+
+    id(const id&);
+
+  public:
+
+
+
+    id() { }
+
+    size_t
+    _M_id() const throw();
+  };
+
+
+
+  class locale::_Impl
+  {
+  public:
+
+    friend class locale;
+    friend class locale::facet;
+
+    template<typename _Facet>
+      friend bool
+      has_facet(const locale&) throw();
+
+    template<typename _Facet>
+      friend const _Facet&
+      use_facet(const locale&);
+
+    template<typename _Cache>
+      friend struct __use_cache;
+
+  private:
+
+    _Atomic_word _M_refcount;
+    const facet** _M_facets;
+    size_t _M_facets_size;
+    const facet** _M_caches;
+    char** _M_names;
+    static const locale::id* const _S_id_ctype[];
+    static const locale::id* const _S_id_numeric[];
+    static const locale::id* const _S_id_collate[];
+    static const locale::id* const _S_id_time[];
+    static const locale::id* const _S_id_monetary[];
+    static const locale::id* const _S_id_messages[];
+    static const locale::id* const* const _S_facet_categories[];
+
+    void
+    _M_add_reference() throw()
+    { __gnu_cxx::__atomic_add_dispatch(&_M_refcount, 1); }
+
+    void
+    _M_remove_reference() throw()
+    {
+
+      ;
+      if (__gnu_cxx::__exchange_and_add_dispatch(&_M_refcount, -1) == 1)
+ {
+          ;
+   try
+     { delete this; }
+   catch(...)
+     { }
+ }
+    }
+
+    _Impl(const _Impl&, size_t);
+    _Impl(const char*, size_t);
+    _Impl(size_t) throw();
+
+   ~_Impl() throw();
+
+    _Impl(const _Impl&);
+
+    void
+    operator=(const _Impl&);
+
+    bool
+    _M_check_same_name()
+    {
+      bool __ret = true;
+      if (_M_names[1])
+
+ for (size_t __i = 0; __ret && __i < _S_categories_size - 1; ++__i)
+   __ret = __builtin_strcmp(_M_names[__i], _M_names[__i + 1]) == 0;
+      return __ret;
+    }
+
+    void
+    _M_replace_categories(const _Impl*, category);
+
+    void
+    _M_replace_category(const _Impl*, const locale::id* const*);
+
+    void
+    _M_replace_facet(const _Impl*, const locale::id*);
+
+    void
+    _M_install_facet(const locale::id*, const facet*);
+
+    template<typename _Facet>
+      void
+      _M_init_facet(_Facet* __facet)
+      { _M_install_facet(&_Facet::id, __facet); }
+
+    template<typename _Facet>
+      void
+      _M_init_facet_unchecked(_Facet* __facet)
+      {
+ __facet->_M_add_reference();
+ _M_facets[_Facet::id._M_id()] = __facet;
+      }
+
+    void
+    _M_install_cache(const facet*, size_t);
+
+    void _M_init_extra(facet**);
+    void _M_init_extra(void*, void*, const char*, const char*);
+  };
+  template<typename _CharT>
+    class __cxx11:: collate : public locale::facet
+    {
+    public:
+
+
+
+      typedef _CharT char_type;
+      typedef basic_string<_CharT> string_type;
+
+
+    protected:
+
+
+      __c_locale _M_c_locale_collate;
+
+    public:
+
+      static locale::id id;
+      explicit
+      collate(size_t __refs = 0)
+      : facet(__refs), _M_c_locale_collate(_S_get_c_locale())
+      { }
+      explicit
+      collate(__c_locale __cloc, size_t __refs = 0)
+      : facet(__refs), _M_c_locale_collate(_S_clone_c_locale(__cloc))
+      { }
+      int
+      compare(const _CharT* __lo1, const _CharT* __hi1,
+       const _CharT* __lo2, const _CharT* __hi2) const
+      { return this->do_compare(__lo1, __hi1, __lo2, __hi2); }
+      string_type
+      transform(const _CharT* __lo, const _CharT* __hi) const
+      { return this->do_transform(__lo, __hi); }
+      long
+      hash(const _CharT* __lo, const _CharT* __hi) const
+      { return this->do_hash(__lo, __hi); }
+
+
+      int
+      _M_compare(const _CharT*, const _CharT*) const throw();
+
+      size_t
+      _M_transform(_CharT*, const _CharT*, size_t) const throw();
+
+  protected:
+
+      virtual
+      ~collate()
+      { _S_destroy_c_locale(_M_c_locale_collate); }
+      virtual int
+      do_compare(const _CharT* __lo1, const _CharT* __hi1,
+   const _CharT* __lo2, const _CharT* __hi2) const;
+      virtual string_type
+      do_transform(const _CharT* __lo, const _CharT* __hi) const;
+      virtual long
+      do_hash(const _CharT* __lo, const _CharT* __hi) const;
+    };
+
+  template<typename _CharT>
+    locale::id collate<_CharT>::id;
+
+
+  template<>
+    int
+    collate<char>::_M_compare(const char*, const char*) const throw();
+
+  template<>
+    size_t
+    collate<char>::_M_transform(char*, const char*, size_t) const throw();
+
+
+  template<>
+    int
+    collate<wchar_t>::_M_compare(const wchar_t*, const wchar_t*) const throw();
+
+  template<>
+    size_t
+    collate<wchar_t>::_M_transform(wchar_t*, const wchar_t*, size_t) const throw();
+
+
+
+  template<typename _CharT>
+    class __cxx11:: collate_byname : public collate<_CharT>
+    {
+    public:
+
+
+      typedef _CharT char_type;
+      typedef basic_string<_CharT> string_type;
+
+
+      explicit
+      collate_byname(const char* __s, size_t __refs = 0)
+      : collate<_CharT>(__refs)
+      {
+ if (__builtin_strcmp(__s, "C") != 0
+     && __builtin_strcmp(__s, "POSIX") != 0)
+   {
+     this->_S_destroy_c_locale(this->_M_c_locale_collate);
+     this->_S_create_c_locale(this->_M_c_locale_collate, __s);
+   }
+      }
+
+
+      explicit
+      collate_byname(const string& __s, size_t __refs = 0)
+      : collate_byname(__s.c_str(), __refs) { }
+
+
+    protected:
+      virtual
+      ~collate_byname() { }
+    };
+
+
+}
+
+       
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  template<typename _Facet>
+    locale::
+    locale(const locale& __other, _Facet* __f)
+    {
+      _M_impl = new _Impl(*__other._M_impl, 1);
+
+      try
+ { _M_impl->_M_install_facet(&_Facet::id, __f); }
+      catch(...)
+ {
+   _M_impl->_M_remove_reference();
+   throw;
+ }
+      delete [] _M_impl->_M_names[0];
+      _M_impl->_M_names[0] = 0;
+    }
+
+  template<typename _Facet>
+    locale
+    locale::
+    combine(const locale& __other) const
+    {
+      _Impl* __tmp = new _Impl(*_M_impl, 1);
+      try
+ {
+   __tmp->_M_replace_facet(__other._M_impl, &_Facet::id);
+ }
+      catch(...)
+ {
+   __tmp->_M_remove_reference();
+   throw;
+ }
+      return locale(__tmp);
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    bool
+    locale::
+    operator()(const basic_string<_CharT, _Traits, _Alloc>& __s1,
+        const basic_string<_CharT, _Traits, _Alloc>& __s2) const
+    {
+      typedef std::collate<_CharT> __collate_type;
+      const __collate_type& __collate = use_facet<__collate_type>(*this);
+      return (__collate.compare(__s1.data(), __s1.data() + __s1.length(),
+    __s2.data(), __s2.data() + __s2.length()) < 0);
+    }
+  template<typename _Facet>
+    bool
+    has_facet(const locale& __loc) throw()
+    {
+      const size_t __i = _Facet::id._M_id();
+      const locale::facet** __facets = __loc._M_impl->_M_facets;
+      return (__i < __loc._M_impl->_M_facets_size
+
+       && dynamic_cast<const _Facet*>(__facets[__i]));
+
+
+
+    }
+  template<typename _Facet>
+    const _Facet&
+    use_facet(const locale& __loc)
+    {
+      const size_t __i = _Facet::id._M_id();
+      const locale::facet** __facets = __loc._M_impl->_M_facets;
+      if (__i >= __loc._M_impl->_M_facets_size || !__facets[__i])
+        __throw_bad_cast();
+
+      return dynamic_cast<const _Facet&>(*__facets[__i]);
+
+
+
+    }
+
+
+
+  template<typename _CharT>
+    int
+    collate<_CharT>::_M_compare(const _CharT*, const _CharT*) const throw ()
+    { return 0; }
+
+
+  template<typename _CharT>
+    size_t
+    collate<_CharT>::_M_transform(_CharT*, const _CharT*, size_t) const throw ()
+    { return 0; }
+
+  template<typename _CharT>
+    int
+    collate<_CharT>::
+    do_compare(const _CharT* __lo1, const _CharT* __hi1,
+        const _CharT* __lo2, const _CharT* __hi2) const
+    {
+
+
+      const string_type __one(__lo1, __hi1);
+      const string_type __two(__lo2, __hi2);
+
+      const _CharT* __p = __one.c_str();
+      const _CharT* __pend = __one.data() + __one.length();
+      const _CharT* __q = __two.c_str();
+      const _CharT* __qend = __two.data() + __two.length();
+
+
+
+
+      for (;;)
+ {
+   const int __res = _M_compare(__p, __q);
+   if (__res)
+     return __res;
+
+   __p += char_traits<_CharT>::length(__p);
+   __q += char_traits<_CharT>::length(__q);
+   if (__p == __pend && __q == __qend)
+     return 0;
+   else if (__p == __pend)
+     return -1;
+   else if (__q == __qend)
+     return 1;
+
+   __p++;
+   __q++;
+ }
+    }
+
+  template<typename _CharT>
+    typename collate<_CharT>::string_type
+    collate<_CharT>::
+    do_transform(const _CharT* __lo, const _CharT* __hi) const
+    {
+      string_type __ret;
+
+
+      const string_type __str(__lo, __hi);
+
+      const _CharT* __p = __str.c_str();
+      const _CharT* __pend = __str.data() + __str.length();
+
+      size_t __len = (__hi - __lo) * 2;
+
+      _CharT* __c = new _CharT[__len];
+
+      try
+ {
+
+
+
+   for (;;)
+     {
+
+       size_t __res = _M_transform(__c, __p, __len);
+
+
+       if (__res >= __len)
+  {
+    __len = __res + 1;
+    delete [] __c, __c = 0;
+    __c = new _CharT[__len];
+    __res = _M_transform(__c, __p, __len);
+  }
+
+       __ret.append(__c, __res);
+       __p += char_traits<_CharT>::length(__p);
+       if (__p == __pend)
+  break;
+
+       __p++;
+       __ret.push_back(_CharT());
+     }
+ }
+      catch(...)
+ {
+   delete [] __c;
+   throw;
+ }
+
+      delete [] __c;
+
+      return __ret;
+    }
+
+  template<typename _CharT>
+    long
+    collate<_CharT>::
+    do_hash(const _CharT* __lo, const _CharT* __hi) const
+    {
+      unsigned long __val = 0;
+      for (; __lo < __hi; ++__lo)
+ __val =
+   *__lo + ((__val << 7)
+     | (__val >> (__gnu_cxx::__numeric_traits<unsigned long>::
+    __digits - 7)));
+      return static_cast<long>(__val);
+    }
+
+
+
+
+  extern template class collate<char>;
+  extern template class collate_byname<char>;
+
+  extern template
+    const collate<char>&
+    use_facet<collate<char> >(const locale&);
+
+  extern template
+    bool
+    has_facet<collate<char> >(const locale&);
+
+
+  extern template class collate<wchar_t>;
+  extern template class collate_byname<wchar_t>;
+
+  extern template
+    const collate<wchar_t>&
+    use_facet<collate<wchar_t> >(const locale&);
+
+  extern template
+    bool
+    has_facet<collate<wchar_t> >(const locale&);
+
+
+
+
+}
+
+
+
+
+       
+
+
+
+
+
+
+       
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  enum class errc
+    {
+      address_family_not_supported = 97,
+      address_in_use = 98,
+      address_not_available = 99,
+      already_connected = 106,
+      argument_list_too_long = 7,
+      argument_out_of_domain = 33,
+      bad_address = 14,
+      bad_file_descriptor = 9,
+
+
+      bad_message = 74,
+
+
+      broken_pipe = 32,
+      connection_aborted = 103,
+      connection_already_in_progress = 114,
+      connection_refused = 111,
+      connection_reset = 104,
+      cross_device_link = 18,
+      destination_address_required = 89,
+      device_or_resource_busy = 16,
+      directory_not_empty = 39,
+      executable_format_error = 8,
+      file_exists = 17,
+      file_too_large = 27,
+      filename_too_long = 36,
+      function_not_supported = 38,
+      host_unreachable = 113,
+
+
+      identifier_removed = 43,
+
+
+      illegal_byte_sequence = 84,
+      inappropriate_io_control_operation = 25,
+      interrupted = 4,
+      invalid_argument = 22,
+      invalid_seek = 29,
+      io_error = 5,
+      is_a_directory = 21,
+      message_size = 90,
+      network_down = 100,
+      network_reset = 102,
+      network_unreachable = 101,
+      no_buffer_space = 105,
+      no_child_process = 10,
+
+
+      no_link = 67,
+
+
+      no_lock_available = 37,
+
+
+      no_message_available = 61,
+
+
+      no_message = 42,
+      no_protocol_option = 92,
+      no_space_on_device = 28,
+
+
+      no_stream_resources = 63,
+
+
+      no_such_device_or_address = 6,
+      no_such_device = 19,
+      no_such_file_or_directory = 2,
+      no_such_process = 3,
+      not_a_directory = 20,
+      not_a_socket = 88,
+
+
+      not_a_stream = 60,
+
+
+      not_connected = 107,
+      not_enough_memory = 12,
+
+
+      not_supported = 95,
+
+
+
+      operation_canceled = 125,
+
+
+      operation_in_progress = 115,
+      operation_not_permitted = 1,
+      operation_not_supported = 95,
+      operation_would_block = 11,
+
+
+      owner_dead = 130,
+
+
+      permission_denied = 13,
+
+
+      protocol_error = 71,
+
+
+      protocol_not_supported = 93,
+      read_only_file_system = 30,
+      resource_deadlock_would_occur = 35,
+      resource_unavailable_try_again = 11,
+      result_out_of_range = 34,
+
+
+      state_not_recoverable = 131,
+
+
+
+      stream_timeout = 62,
+
+
+
+      text_file_busy = 26,
+
+
+      timed_out = 110,
+      too_many_files_open_in_system = 23,
+      too_many_files_open = 24,
+      too_many_links = 31,
+      too_many_symbolic_link_levels = 40,
+
+
+      value_too_large = 75,
+
+
+      wrong_protocol_type = 91
+    };
+
+
+}
+
+       
+
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+  struct __cow_string
+  {
+    union {
+      const char* _M_p;
+      char _M_bytes[sizeof(const char*)];
+    };
+
+    __cow_string();
+    __cow_string(const std::string&);
+    __cow_string(const char*, size_t);
+    __cow_string(const __cow_string&) noexcept;
+    __cow_string& operator=(const __cow_string&) noexcept;
+    ~__cow_string();
+
+    __cow_string(__cow_string&&) noexcept;
+    __cow_string& operator=(__cow_string&&) noexcept;
+
+  };
+
+  typedef basic_string<char> __sso_string;
+  class logic_error : public exception
+  {
+    __cow_string _M_msg;
+
+  public:
+
+    explicit
+    logic_error(const string& __arg) ;
+
+
+    explicit
+    logic_error(const char*) ;
+
+
+
+    logic_error(const logic_error&) noexcept;
+    logic_error& operator=(const logic_error&) noexcept;
+
+
+    virtual ~logic_error() noexcept;
+
+
+
+    virtual const char*
+    what() const noexcept;
+
+
+
+
+
+  };
+
+
+
+  class domain_error : public logic_error
+  {
+  public:
+    explicit domain_error(const string& __arg) ;
+
+    explicit domain_error(const char*) ;
+
+    virtual ~domain_error() noexcept;
+  };
+
+
+  class invalid_argument : public logic_error
+  {
+  public:
+    explicit invalid_argument(const string& __arg) ;
+
+    explicit invalid_argument(const char*) ;
+
+    virtual ~invalid_argument() noexcept;
+  };
+
+
+
+  class length_error : public logic_error
+  {
+  public:
+    explicit length_error(const string& __arg) ;
+
+    explicit length_error(const char*) ;
+
+    virtual ~length_error() noexcept;
+  };
+
+
+
+  class out_of_range : public logic_error
+  {
+  public:
+    explicit out_of_range(const string& __arg) ;
+
+    explicit out_of_range(const char*) ;
+
+    virtual ~out_of_range() noexcept;
+  };
+
+
+
+
+
+
+  class runtime_error : public exception
+  {
+    __cow_string _M_msg;
+
+  public:
+
+    explicit
+    runtime_error(const string& __arg) ;
+
+
+    explicit
+    runtime_error(const char*) ;
+
+
+
+    runtime_error(const runtime_error&) noexcept;
+    runtime_error& operator=(const runtime_error&) noexcept;
+
+
+    virtual ~runtime_error() noexcept;
+
+
+
+    virtual const char*
+    what() const noexcept;
+
+
+
+
+
+  };
+
+
+  class range_error : public runtime_error
+  {
+  public:
+    explicit range_error(const string& __arg) ;
+
+    explicit range_error(const char*) ;
+
+    virtual ~range_error() noexcept;
+  };
+
+
+  class overflow_error : public runtime_error
+  {
+  public:
+    explicit overflow_error(const string& __arg) ;
+
+    explicit overflow_error(const char*) ;
+
+    virtual ~overflow_error() noexcept;
+  };
+
+
+  class underflow_error : public runtime_error
+  {
+  public:
+    explicit underflow_error(const string& __arg) ;
+
+    explicit underflow_error(const char*) ;
+
+    virtual ~underflow_error() noexcept;
+  };
+
+
+
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  class error_code;
+  class error_condition;
+  class system_error;
+
+
+  template<typename _Tp>
+    struct is_error_code_enum : public false_type { };
+
+
+  template<typename _Tp>
+    struct is_error_condition_enum : public false_type { };
+
+  template<>
+    struct is_error_condition_enum<errc>
+    : public true_type { };
+  inline namespace _V2 {
+
+
+  class error_category
+  {
+  public:
+    constexpr error_category() noexcept = default;
+
+    virtual ~error_category();
+
+    error_category(const error_category&) = delete;
+    error_category& operator=(const error_category&) = delete;
+
+    virtual const char*
+    name() const noexcept = 0;
+
+
+
+
+
+
+  private:
+    __attribute ((__abi_tag__ ("cxx11")))
+    virtual __cow_string
+    _M_message(int) const;
+
+  public:
+    __attribute ((__abi_tag__ ("cxx11")))
+    virtual string
+    message(int) const = 0;
+  public:
+    virtual error_condition
+    default_error_condition(int __i) const noexcept;
+
+    virtual bool
+    equivalent(int __i, const error_condition& __cond) const noexcept;
+
+    virtual bool
+    equivalent(const error_code& __code, int __i) const noexcept;
+
+    bool
+    operator<(const error_category& __other) const noexcept
+    { return less<const error_category*>()(this, &__other); }
+
+    bool
+    operator==(const error_category& __other) const noexcept
+    { return this == &__other; }
+
+    bool
+    operator!=(const error_category& __other) const noexcept
+    { return this != &__other; }
+  };
+
+
+  __attribute__ ((__const__)) const error_category& system_category() noexcept;
+  __attribute__ ((__const__)) const error_category& generic_category() noexcept;
+
+  }
+
+  error_code make_error_code(errc) noexcept;
+
+  template<typename _Tp>
+    struct hash;
+
+
+
+  struct error_code
+  {
+    error_code() noexcept
+    : _M_value(0), _M_cat(&system_category()) { }
+
+    error_code(int __v, const error_category& __cat) noexcept
+    : _M_value(__v), _M_cat(&__cat) { }
+
+    template<typename _ErrorCodeEnum, typename = typename
+      enable_if<is_error_code_enum<_ErrorCodeEnum>::value>::type>
+      error_code(_ErrorCodeEnum __e) noexcept
+      { *this = make_error_code(__e); }
+
+    void
+    assign(int __v, const error_category& __cat) noexcept
+    {
+      _M_value = __v;
+      _M_cat = &__cat;
+    }
+
+    void
+    clear() noexcept
+    { assign(0, system_category()); }
+
+
+    template<typename _ErrorCodeEnum>
+      typename enable_if<is_error_code_enum<_ErrorCodeEnum>::value,
+    error_code&>::type
+      operator=(_ErrorCodeEnum __e) noexcept
+      { return *this = make_error_code(__e); }
+
+    int
+    value() const noexcept { return _M_value; }
+
+    const error_category&
+    category() const noexcept { return *_M_cat; }
+
+    error_condition
+    default_error_condition() const noexcept;
+
+    __attribute ((__abi_tag__ ("cxx11")))
+    string
+    message() const
+    { return category().message(value()); }
+
+    explicit operator bool() const noexcept
+    { return _M_value != 0; }
+
+
+  private:
+    friend class hash<error_code>;
+
+    int _M_value;
+    const error_category* _M_cat;
+  };
+
+
+  inline error_code
+  make_error_code(errc __e) noexcept
+  { return error_code(static_cast<int>(__e), generic_category()); }
+
+  inline bool
+  operator<(const error_code& __lhs, const error_code& __rhs) noexcept
+  {
+    return (__lhs.category() < __rhs.category()
+     || (__lhs.category() == __rhs.category()
+  && __lhs.value() < __rhs.value()));
+  }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    operator<<(basic_ostream<_CharT, _Traits>& __os, const error_code& __e)
+    { return (__os << __e.category().name() << ':' << __e.value()); }
+
+  error_condition make_error_condition(errc) noexcept;
+
+
+
+  struct error_condition
+  {
+    error_condition() noexcept
+    : _M_value(0), _M_cat(&generic_category()) { }
+
+    error_condition(int __v, const error_category& __cat) noexcept
+    : _M_value(__v), _M_cat(&__cat) { }
+
+    template<typename _ErrorConditionEnum, typename = typename
+  enable_if<is_error_condition_enum<_ErrorConditionEnum>::value>::type>
+      error_condition(_ErrorConditionEnum __e) noexcept
+      { *this = make_error_condition(__e); }
+
+    void
+    assign(int __v, const error_category& __cat) noexcept
+    {
+      _M_value = __v;
+      _M_cat = &__cat;
+    }
+
+
+    template<typename _ErrorConditionEnum>
+      typename enable_if<is_error_condition_enum
+    <_ErrorConditionEnum>::value, error_condition&>::type
+      operator=(_ErrorConditionEnum __e) noexcept
+      { return *this = make_error_condition(__e); }
+
+    void
+    clear() noexcept
+    { assign(0, generic_category()); }
+
+
+    int
+    value() const noexcept { return _M_value; }
+
+    const error_category&
+    category() const noexcept { return *_M_cat; }
+
+    __attribute ((__abi_tag__ ("cxx11")))
+    string
+    message() const
+    { return category().message(value()); }
+
+    explicit operator bool() const noexcept
+    { return _M_value != 0; }
+
+
+  private:
+    int _M_value;
+    const error_category* _M_cat;
+  };
+
+
+  inline error_condition
+  make_error_condition(errc __e) noexcept
+  { return error_condition(static_cast<int>(__e), generic_category()); }
+
+  inline bool
+  operator<(const error_condition& __lhs,
+     const error_condition& __rhs) noexcept
+  {
+    return (__lhs.category() < __rhs.category()
+     || (__lhs.category() == __rhs.category()
+  && __lhs.value() < __rhs.value()));
+  }
+
+
+  inline bool
+  operator==(const error_code& __lhs, const error_code& __rhs) noexcept
+  { return (__lhs.category() == __rhs.category()
+     && __lhs.value() == __rhs.value()); }
+
+  inline bool
+  operator==(const error_code& __lhs, const error_condition& __rhs) noexcept
+  {
+    return (__lhs.category().equivalent(__lhs.value(), __rhs)
+     || __rhs.category().equivalent(__lhs, __rhs.value()));
+  }
+
+  inline bool
+  operator==(const error_condition& __lhs, const error_code& __rhs) noexcept
+  {
+    return (__rhs.category().equivalent(__rhs.value(), __lhs)
+     || __lhs.category().equivalent(__rhs, __lhs.value()));
+  }
+
+  inline bool
+  operator==(const error_condition& __lhs,
+      const error_condition& __rhs) noexcept
+  {
+    return (__lhs.category() == __rhs.category()
+     && __lhs.value() == __rhs.value());
+  }
+
+  inline bool
+  operator!=(const error_code& __lhs, const error_code& __rhs) noexcept
+  { return !(__lhs == __rhs); }
+
+  inline bool
+  operator!=(const error_code& __lhs, const error_condition& __rhs) noexcept
+  { return !(__lhs == __rhs); }
+
+  inline bool
+  operator!=(const error_condition& __lhs, const error_code& __rhs) noexcept
+  { return !(__lhs == __rhs); }
+
+  inline bool
+  operator!=(const error_condition& __lhs,
+      const error_condition& __rhs) noexcept
+  { return !(__lhs == __rhs); }
+
+
+
+
+
+
+
+  class system_error : public std::runtime_error
+  {
+  private:
+    error_code _M_code;
+
+  public:
+    system_error(error_code __ec = error_code())
+    : runtime_error(__ec.message()), _M_code(__ec) { }
+
+    system_error(error_code __ec, const string& __what)
+    : runtime_error(__what + ": " + __ec.message()), _M_code(__ec) { }
+
+    system_error(error_code __ec, const char* __what)
+    : runtime_error(__what + (": " + __ec.message())), _M_code(__ec) { }
+
+    system_error(int __v, const error_category& __ecat, const char* __what)
+    : system_error(error_code(__v, __ecat), __what) { }
+
+    system_error(int __v, const error_category& __ecat)
+    : runtime_error(error_code(__v, __ecat).message()),
+      _M_code(__v, __ecat) { }
+
+    system_error(int __v, const error_category& __ecat, const string& __what)
+    : runtime_error(__what + ": " + error_code(__v, __ecat).message()),
+      _M_code(__v, __ecat) { }
+
+    virtual ~system_error() noexcept;
+
+    const error_code&
+    code() const noexcept { return _M_code; }
+  };
+
+
+}
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+  template<>
+    struct hash<error_code>
+    : public __hash_base<size_t, error_code>
+    {
+      size_t
+      operator()(const error_code& __e) const noexcept
+      {
+ const size_t __tmp = std::_Hash_impl::hash(__e._M_value);
+ return std::_Hash_impl::__hash_combine(__e._M_cat, __tmp);
+      }
+    };
+
+}
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+  enum _Ios_Fmtflags
+    {
+      _S_boolalpha = 1L << 0,
+      _S_dec = 1L << 1,
+      _S_fixed = 1L << 2,
+      _S_hex = 1L << 3,
+      _S_internal = 1L << 4,
+      _S_left = 1L << 5,
+      _S_oct = 1L << 6,
+      _S_right = 1L << 7,
+      _S_scientific = 1L << 8,
+      _S_showbase = 1L << 9,
+      _S_showpoint = 1L << 10,
+      _S_showpos = 1L << 11,
+      _S_skipws = 1L << 12,
+      _S_unitbuf = 1L << 13,
+      _S_uppercase = 1L << 14,
+      _S_adjustfield = _S_left | _S_right | _S_internal,
+      _S_basefield = _S_dec | _S_oct | _S_hex,
+      _S_floatfield = _S_scientific | _S_fixed,
+      _S_ios_fmtflags_end = 1L << 16,
+      _S_ios_fmtflags_max = 0x7fffffff,
+      _S_ios_fmtflags_min = ~0x7fffffff
+    };
+
+  inline constexpr _Ios_Fmtflags
+  operator&(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
+  { return _Ios_Fmtflags(static_cast<int>(__a) & static_cast<int>(__b)); }
+
+  inline constexpr _Ios_Fmtflags
+  operator|(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
+  { return _Ios_Fmtflags(static_cast<int>(__a) | static_cast<int>(__b)); }
+
+  inline constexpr _Ios_Fmtflags
+  operator^(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
+  { return _Ios_Fmtflags(static_cast<int>(__a) ^ static_cast<int>(__b)); }
+
+  inline constexpr _Ios_Fmtflags
+  operator~(_Ios_Fmtflags __a)
+  { return _Ios_Fmtflags(~static_cast<int>(__a)); }
+
+  inline const _Ios_Fmtflags&
+  operator|=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
+  { return __a = __a | __b; }
+
+  inline const _Ios_Fmtflags&
+  operator&=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
+  { return __a = __a & __b; }
+
+  inline const _Ios_Fmtflags&
+  operator^=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
+  { return __a = __a ^ __b; }
+
+
+  enum _Ios_Openmode
+    {
+      _S_app = 1L << 0,
+      _S_ate = 1L << 1,
+      _S_bin = 1L << 2,
+      _S_in = 1L << 3,
+      _S_out = 1L << 4,
+      _S_trunc = 1L << 5,
+      _S_ios_openmode_end = 1L << 16,
+      _S_ios_openmode_max = 0x7fffffff,
+      _S_ios_openmode_min = ~0x7fffffff
+    };
+
+  inline constexpr _Ios_Openmode
+  operator&(_Ios_Openmode __a, _Ios_Openmode __b)
+  { return _Ios_Openmode(static_cast<int>(__a) & static_cast<int>(__b)); }
+
+  inline constexpr _Ios_Openmode
+  operator|(_Ios_Openmode __a, _Ios_Openmode __b)
+  { return _Ios_Openmode(static_cast<int>(__a) | static_cast<int>(__b)); }
+
+  inline constexpr _Ios_Openmode
+  operator^(_Ios_Openmode __a, _Ios_Openmode __b)
+  { return _Ios_Openmode(static_cast<int>(__a) ^ static_cast<int>(__b)); }
+
+  inline constexpr _Ios_Openmode
+  operator~(_Ios_Openmode __a)
+  { return _Ios_Openmode(~static_cast<int>(__a)); }
+
+  inline const _Ios_Openmode&
+  operator|=(_Ios_Openmode& __a, _Ios_Openmode __b)
+  { return __a = __a | __b; }
+
+  inline const _Ios_Openmode&
+  operator&=(_Ios_Openmode& __a, _Ios_Openmode __b)
+  { return __a = __a & __b; }
+
+  inline const _Ios_Openmode&
+  operator^=(_Ios_Openmode& __a, _Ios_Openmode __b)
+  { return __a = __a ^ __b; }
+
+
+  enum _Ios_Iostate
+    {
+      _S_goodbit = 0,
+      _S_badbit = 1L << 0,
+      _S_eofbit = 1L << 1,
+      _S_failbit = 1L << 2,
+      _S_ios_iostate_end = 1L << 16,
+      _S_ios_iostate_max = 0x7fffffff,
+      _S_ios_iostate_min = ~0x7fffffff
+    };
+
+  inline constexpr _Ios_Iostate
+  operator&(_Ios_Iostate __a, _Ios_Iostate __b)
+  { return _Ios_Iostate(static_cast<int>(__a) & static_cast<int>(__b)); }
+
+  inline constexpr _Ios_Iostate
+  operator|(_Ios_Iostate __a, _Ios_Iostate __b)
+  { return _Ios_Iostate(static_cast<int>(__a) | static_cast<int>(__b)); }
+
+  inline constexpr _Ios_Iostate
+  operator^(_Ios_Iostate __a, _Ios_Iostate __b)
+  { return _Ios_Iostate(static_cast<int>(__a) ^ static_cast<int>(__b)); }
+
+  inline constexpr _Ios_Iostate
+  operator~(_Ios_Iostate __a)
+  { return _Ios_Iostate(~static_cast<int>(__a)); }
+
+  inline const _Ios_Iostate&
+  operator|=(_Ios_Iostate& __a, _Ios_Iostate __b)
+  { return __a = __a | __b; }
+
+  inline const _Ios_Iostate&
+  operator&=(_Ios_Iostate& __a, _Ios_Iostate __b)
+  { return __a = __a & __b; }
+
+  inline const _Ios_Iostate&
+  operator^=(_Ios_Iostate& __a, _Ios_Iostate __b)
+  { return __a = __a ^ __b; }
+
+
+  enum _Ios_Seekdir
+    {
+      _S_beg = 0,
+      _S_cur = 1,
+      _S_end = 2,
+      _S_ios_seekdir_end = 1L << 16
+    };
+
+
+
+  enum class io_errc { stream = 1 };
+
+  template <> struct is_error_code_enum<io_errc> : public true_type { };
+
+  const error_category& iostream_category() noexcept;
+
+  inline error_code
+  make_error_code(io_errc __e) noexcept
+  { return error_code(static_cast<int>(__e), iostream_category()); }
+
+  inline error_condition
+  make_error_condition(io_errc __e) noexcept
+  { return error_condition(static_cast<int>(__e), iostream_category()); }
+  class ios_base
+  {
+  public:
+    class __attribute ((__abi_tag__ ("cxx11"))) failure : public system_error
+    {
+    public:
+      explicit
+      failure(const string& __str);
+
+
+      explicit
+      failure(const string&, const error_code&);
+
+      explicit
+      failure(const char*, const error_code& = io_errc::stream);
+
+
+      virtual
+      ~failure() throw();
+
+      virtual const char*
+      what() const throw();
+    };
+    typedef _Ios_Fmtflags fmtflags;
+
+
+    static const fmtflags boolalpha = _S_boolalpha;
+
+
+    static const fmtflags dec = _S_dec;
+
+
+    static const fmtflags fixed = _S_fixed;
+
+
+    static const fmtflags hex = _S_hex;
+
+
+
+
+    static const fmtflags internal = _S_internal;
+
+
+
+    static const fmtflags left = _S_left;
+
+
+    static const fmtflags oct = _S_oct;
+
+
+
+    static const fmtflags right = _S_right;
+
+
+    static const fmtflags scientific = _S_scientific;
+
+
+
+    static const fmtflags showbase = _S_showbase;
+
+
+
+    static const fmtflags showpoint = _S_showpoint;
+
+
+    static const fmtflags showpos = _S_showpos;
+
+
+    static const fmtflags skipws = _S_skipws;
+
+
+    static const fmtflags unitbuf = _S_unitbuf;
+
+
+
+    static const fmtflags uppercase = _S_uppercase;
+
+
+    static const fmtflags adjustfield = _S_adjustfield;
+
+
+    static const fmtflags basefield = _S_basefield;
+
+
+    static const fmtflags floatfield = _S_floatfield;
+    typedef _Ios_Iostate iostate;
+
+
+
+    static const iostate badbit = _S_badbit;
+
+
+    static const iostate eofbit = _S_eofbit;
+
+
+
+
+    static const iostate failbit = _S_failbit;
+
+
+    static const iostate goodbit = _S_goodbit;
+    typedef _Ios_Openmode openmode;
+
+
+    static const openmode app = _S_app;
+
+
+    static const openmode ate = _S_ate;
+
+
+
+
+    static const openmode binary = _S_bin;
+
+
+    static const openmode in = _S_in;
+
+
+    static const openmode out = _S_out;
+
+
+    static const openmode trunc = _S_trunc;
+    typedef _Ios_Seekdir seekdir;
+
+
+    static const seekdir beg = _S_beg;
+
+
+    static const seekdir cur = _S_cur;
+
+
+    static const seekdir end = _S_end;
+
+
+
+    typedef int io_state;
+    typedef int open_mode;
+    typedef int seek_dir;
+
+    typedef std::streampos streampos;
+    typedef std::streamoff streamoff;
+    enum event
+    {
+      erase_event,
+      imbue_event,
+      copyfmt_event
+    };
+    typedef void (*event_callback) (event __e, ios_base& __b, int __i);
+    void
+    register_callback(event_callback __fn, int __index);
+
+  protected:
+    streamsize _M_precision;
+    streamsize _M_width;
+    fmtflags _M_flags;
+    iostate _M_exception;
+    iostate _M_streambuf_state;
+
+
+
+    struct _Callback_list
+    {
+
+      _Callback_list* _M_next;
+      ios_base::event_callback _M_fn;
+      int _M_index;
+      _Atomic_word _M_refcount;
+
+      _Callback_list(ios_base::event_callback __fn, int __index,
+       _Callback_list* __cb)
+      : _M_next(__cb), _M_fn(__fn), _M_index(__index), _M_refcount(0) { }
+
+      void
+      _M_add_reference() { __gnu_cxx::__atomic_add_dispatch(&_M_refcount, 1); }
+
+
+      int
+      _M_remove_reference()
+      {
+
+        ;
+        int __res = __gnu_cxx::__exchange_and_add_dispatch(&_M_refcount, -1);
+        if (__res == 0)
+          {
+            ;
+          }
+        return __res;
+      }
+    };
+
+     _Callback_list* _M_callbacks;
+
+    void
+    _M_call_callbacks(event __ev) throw();
+
+    void
+    _M_dispose_callbacks(void) throw();
+
+
+    struct _Words
+    {
+      void* _M_pword;
+      long _M_iword;
+      _Words() : _M_pword(0), _M_iword(0) { }
+    };
+
+
+    _Words _M_word_zero;
+
+
+
+    enum { _S_local_word_size = 8 };
+    _Words _M_local_word[_S_local_word_size];
+
+
+    int _M_word_size;
+    _Words* _M_word;
+
+    _Words&
+    _M_grow_words(int __index, bool __iword);
+
+
+    locale _M_ios_locale;
+
+    void
+    _M_init() throw();
+
+  public:
+
+
+
+
+
+    class Init
+    {
+      friend class ios_base;
+    public:
+      Init();
+      ~Init();
+
+    private:
+      static _Atomic_word _S_refcount;
+      static bool _S_synced_with_stdio;
+    };
+
+
+
+
+
+
+    fmtflags
+    flags() const
+    { return _M_flags; }
+    fmtflags
+    flags(fmtflags __fmtfl)
+    {
+      fmtflags __old = _M_flags;
+      _M_flags = __fmtfl;
+      return __old;
+    }
+    fmtflags
+    setf(fmtflags __fmtfl)
+    {
+      fmtflags __old = _M_flags;
+      _M_flags |= __fmtfl;
+      return __old;
+    }
+    fmtflags
+    setf(fmtflags __fmtfl, fmtflags __mask)
+    {
+      fmtflags __old = _M_flags;
+      _M_flags &= ~__mask;
+      _M_flags |= (__fmtfl & __mask);
+      return __old;
+    }
+
+
+
+
+
+
+
+    void
+    unsetf(fmtflags __mask)
+    { _M_flags &= ~__mask; }
+    streamsize
+    precision() const
+    { return _M_precision; }
+
+
+
+
+
+
+    streamsize
+    precision(streamsize __prec)
+    {
+      streamsize __old = _M_precision;
+      _M_precision = __prec;
+      return __old;
+    }
+
+
+
+
+
+
+
+    streamsize
+    width() const
+    { return _M_width; }
+
+
+
+
+
+
+    streamsize
+    width(streamsize __wide)
+    {
+      streamsize __old = _M_width;
+      _M_width = __wide;
+      return __old;
+    }
+    static bool
+    sync_with_stdio(bool __sync = true);
+    locale
+    imbue(const locale& __loc) throw();
+    locale
+    getloc() const
+    { return _M_ios_locale; }
+    const locale&
+    _M_getloc() const
+    { return _M_ios_locale; }
+    static int
+    xalloc() throw();
+    long&
+    iword(int __ix)
+    {
+      _Words& __word = (__ix < _M_word_size)
+   ? _M_word[__ix] : _M_grow_words(__ix, true);
+      return __word._M_iword;
+    }
+    void*&
+    pword(int __ix)
+    {
+      _Words& __word = (__ix < _M_word_size)
+   ? _M_word[__ix] : _M_grow_words(__ix, false);
+      return __word._M_pword;
+    }
+    virtual ~ios_base();
+
+  protected:
+    ios_base() throw ();
+  public:
+    ios_base(const ios_base&) = delete;
+
+    ios_base&
+    operator=(const ios_base&) = delete;
+
+  protected:
+    void
+    _M_move(ios_base&) noexcept;
+
+    void
+    _M_swap(ios_base& __rhs) noexcept;
+
+  };
+
+
+
+  inline ios_base&
+  boolalpha(ios_base& __base)
+  {
+    __base.setf(ios_base::boolalpha);
+    return __base;
+  }
+
+
+  inline ios_base&
+  noboolalpha(ios_base& __base)
+  {
+    __base.unsetf(ios_base::boolalpha);
+    return __base;
+  }
+
+
+  inline ios_base&
+  showbase(ios_base& __base)
+  {
+    __base.setf(ios_base::showbase);
+    return __base;
+  }
+
+
+  inline ios_base&
+  noshowbase(ios_base& __base)
+  {
+    __base.unsetf(ios_base::showbase);
+    return __base;
+  }
+
+
+  inline ios_base&
+  showpoint(ios_base& __base)
+  {
+    __base.setf(ios_base::showpoint);
+    return __base;
+  }
+
+
+  inline ios_base&
+  noshowpoint(ios_base& __base)
+  {
+    __base.unsetf(ios_base::showpoint);
+    return __base;
+  }
+
+
+  inline ios_base&
+  showpos(ios_base& __base)
+  {
+    __base.setf(ios_base::showpos);
+    return __base;
+  }
+
+
+  inline ios_base&
+  noshowpos(ios_base& __base)
+  {
+    __base.unsetf(ios_base::showpos);
+    return __base;
+  }
+
+
+  inline ios_base&
+  skipws(ios_base& __base)
+  {
+    __base.setf(ios_base::skipws);
+    return __base;
+  }
+
+
+  inline ios_base&
+  noskipws(ios_base& __base)
+  {
+    __base.unsetf(ios_base::skipws);
+    return __base;
+  }
+
+
+  inline ios_base&
+  uppercase(ios_base& __base)
+  {
+    __base.setf(ios_base::uppercase);
+    return __base;
+  }
+
+
+  inline ios_base&
+  nouppercase(ios_base& __base)
+  {
+    __base.unsetf(ios_base::uppercase);
+    return __base;
+  }
+
+
+  inline ios_base&
+  unitbuf(ios_base& __base)
+  {
+     __base.setf(ios_base::unitbuf);
+     return __base;
+  }
+
+
+  inline ios_base&
+  nounitbuf(ios_base& __base)
+  {
+     __base.unsetf(ios_base::unitbuf);
+     return __base;
+  }
+
+
+
+  inline ios_base&
+  internal(ios_base& __base)
+  {
+     __base.setf(ios_base::internal, ios_base::adjustfield);
+     return __base;
+  }
+
+
+  inline ios_base&
+  left(ios_base& __base)
+  {
+    __base.setf(ios_base::left, ios_base::adjustfield);
+    return __base;
+  }
+
+
+  inline ios_base&
+  right(ios_base& __base)
+  {
+    __base.setf(ios_base::right, ios_base::adjustfield);
+    return __base;
+  }
+
+
+
+  inline ios_base&
+  dec(ios_base& __base)
+  {
+    __base.setf(ios_base::dec, ios_base::basefield);
+    return __base;
+  }
+
+
+  inline ios_base&
+  hex(ios_base& __base)
+  {
+    __base.setf(ios_base::hex, ios_base::basefield);
+    return __base;
+  }
+
+
+  inline ios_base&
+  oct(ios_base& __base)
+  {
+    __base.setf(ios_base::oct, ios_base::basefield);
+    return __base;
+  }
+
+
+
+  inline ios_base&
+  fixed(ios_base& __base)
+  {
+    __base.setf(ios_base::fixed, ios_base::floatfield);
+    return __base;
+  }
+
+
+  inline ios_base&
+  scientific(ios_base& __base)
+  {
+    __base.setf(ios_base::scientific, ios_base::floatfield);
+    return __base;
+  }
+
+
+
+
+
+
+  inline ios_base&
+  hexfloat(ios_base& __base)
+  {
+    __base.setf(ios_base::fixed | ios_base::scientific, ios_base::floatfield);
+    return __base;
+  }
+
+
+  inline ios_base&
+  defaultfloat(ios_base& __base)
+  {
+    __base.unsetf(ios_base::floatfield);
+    return __base;
+  }
+
+
+
+}
+       
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+  template<typename _CharT, typename _Traits>
+    streamsize
+    __copy_streambufs_eof(basic_streambuf<_CharT, _Traits>*,
+     basic_streambuf<_CharT, _Traits>*, bool&);
+  template<typename _CharT, typename _Traits>
+    class basic_streambuf
+    {
+    public:
+
+
+
+
+
+
+      typedef _CharT char_type;
+      typedef _Traits traits_type;
+      typedef typename traits_type::int_type int_type;
+      typedef typename traits_type::pos_type pos_type;
+      typedef typename traits_type::off_type off_type;
+
+
+
+
+      typedef basic_streambuf<char_type, traits_type> __streambuf_type;
+
+
+      friend class basic_ios<char_type, traits_type>;
+      friend class basic_istream<char_type, traits_type>;
+      friend class basic_ostream<char_type, traits_type>;
+      friend class istreambuf_iterator<char_type, traits_type>;
+      friend class ostreambuf_iterator<char_type, traits_type>;
+
+      friend streamsize
+      __copy_streambufs_eof<>(basic_streambuf*, basic_streambuf*, bool&);
+
+      template<bool _IsMove, typename _CharT2>
+        friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
+            _CharT2*>::__type
+        __copy_move_a2(istreambuf_iterator<_CharT2>,
+         istreambuf_iterator<_CharT2>, _CharT2*);
+
+      template<typename _CharT2>
+        friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
+      istreambuf_iterator<_CharT2> >::__type
+        find(istreambuf_iterator<_CharT2>, istreambuf_iterator<_CharT2>,
+      const _CharT2&);
+
+      template<typename _CharT2, typename _Distance>
+        friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
+            void>::__type
+        advance(istreambuf_iterator<_CharT2>&, _Distance);
+
+      template<typename _CharT2, typename _Traits2>
+        friend basic_istream<_CharT2, _Traits2>&
+        operator>>(basic_istream<_CharT2, _Traits2>&, _CharT2*);
+
+      template<typename _CharT2, typename _Traits2, typename _Alloc>
+        friend basic_istream<_CharT2, _Traits2>&
+        operator>>(basic_istream<_CharT2, _Traits2>&,
+     basic_string<_CharT2, _Traits2, _Alloc>&);
+
+      template<typename _CharT2, typename _Traits2, typename _Alloc>
+        friend basic_istream<_CharT2, _Traits2>&
+        getline(basic_istream<_CharT2, _Traits2>&,
+  basic_string<_CharT2, _Traits2, _Alloc>&, _CharT2);
+
+    protected:
+
+
+
+
+
+
+
+      char_type* _M_in_beg;
+      char_type* _M_in_cur;
+      char_type* _M_in_end;
+      char_type* _M_out_beg;
+      char_type* _M_out_cur;
+      char_type* _M_out_end;
+
+
+      locale _M_buf_locale;
+
+  public:
+
+      virtual
+      ~basic_streambuf()
+      { }
+      locale
+      pubimbue(const locale& __loc)
+      {
+ locale __tmp(this->getloc());
+ this->imbue(__loc);
+ _M_buf_locale = __loc;
+ return __tmp;
+      }
+      locale
+      getloc() const
+      { return _M_buf_locale; }
+      basic_streambuf*
+      pubsetbuf(char_type* __s, streamsize __n)
+      { return this->setbuf(__s, __n); }
+      pos_type
+      pubseekoff(off_type __off, ios_base::seekdir __way,
+   ios_base::openmode __mode = ios_base::in | ios_base::out)
+      { return this->seekoff(__off, __way, __mode); }
+      pos_type
+      pubseekpos(pos_type __sp,
+   ios_base::openmode __mode = ios_base::in | ios_base::out)
+      { return this->seekpos(__sp, __mode); }
+
+
+
+
+      int
+      pubsync() { return this->sync(); }
+      streamsize
+      in_avail()
+      {
+ const streamsize __ret = this->egptr() - this->gptr();
+ return __ret ? __ret : this->showmanyc();
+      }
+      int_type
+      snextc()
+      {
+ int_type __ret = traits_type::eof();
+ if (__builtin_expect(!traits_type::eq_int_type(this->sbumpc(),
+             __ret), true))
+   __ret = this->sgetc();
+ return __ret;
+      }
+      int_type
+      sbumpc()
+      {
+ int_type __ret;
+ if (__builtin_expect(this->gptr() < this->egptr(), true))
+   {
+     __ret = traits_type::to_int_type(*this->gptr());
+     this->gbump(1);
+   }
+ else
+   __ret = this->uflow();
+ return __ret;
+      }
+      int_type
+      sgetc()
+      {
+ int_type __ret;
+ if (__builtin_expect(this->gptr() < this->egptr(), true))
+   __ret = traits_type::to_int_type(*this->gptr());
+ else
+   __ret = this->underflow();
+ return __ret;
+      }
+      streamsize
+      sgetn(char_type* __s, streamsize __n)
+      { return this->xsgetn(__s, __n); }
+      int_type
+      sputbackc(char_type __c)
+      {
+ int_type __ret;
+ const bool __testpos = this->eback() < this->gptr();
+ if (__builtin_expect(!__testpos ||
+        !traits_type::eq(__c, this->gptr()[-1]), false))
+   __ret = this->pbackfail(traits_type::to_int_type(__c));
+ else
+   {
+     this->gbump(-1);
+     __ret = traits_type::to_int_type(*this->gptr());
+   }
+ return __ret;
+      }
+      int_type
+      sungetc()
+      {
+ int_type __ret;
+ if (__builtin_expect(this->eback() < this->gptr(), true))
+   {
+     this->gbump(-1);
+     __ret = traits_type::to_int_type(*this->gptr());
+   }
+ else
+   __ret = this->pbackfail();
+ return __ret;
+      }
+      int_type
+      sputc(char_type __c)
+      {
+ int_type __ret;
+ if (__builtin_expect(this->pptr() < this->epptr(), true))
+   {
+     *this->pptr() = __c;
+     this->pbump(1);
+     __ret = traits_type::to_int_type(__c);
+   }
+ else
+   __ret = this->overflow(traits_type::to_int_type(__c));
+ return __ret;
+      }
+      streamsize
+      sputn(const char_type* __s, streamsize __n)
+      { return this->xsputn(__s, __n); }
+
+    protected:
+      basic_streambuf()
+      : _M_in_beg(0), _M_in_cur(0), _M_in_end(0),
+      _M_out_beg(0), _M_out_cur(0), _M_out_end(0),
+      _M_buf_locale(locale())
+      { }
+      char_type*
+      eback() const { return _M_in_beg; }
+
+      char_type*
+      gptr() const { return _M_in_cur; }
+
+      char_type*
+      egptr() const { return _M_in_end; }
+      void
+      gbump(int __n) { _M_in_cur += __n; }
+      void
+      setg(char_type* __gbeg, char_type* __gnext, char_type* __gend)
+      {
+ _M_in_beg = __gbeg;
+ _M_in_cur = __gnext;
+ _M_in_end = __gend;
+      }
+      char_type*
+      pbase() const { return _M_out_beg; }
+
+      char_type*
+      pptr() const { return _M_out_cur; }
+
+      char_type*
+      epptr() const { return _M_out_end; }
+      void
+      pbump(int __n) { _M_out_cur += __n; }
+      void
+      setp(char_type* __pbeg, char_type* __pend)
+      {
+ _M_out_beg = _M_out_cur = __pbeg;
+ _M_out_end = __pend;
+      }
+      virtual void
+      imbue(const locale& __loc __attribute__ ((__unused__)))
+      { }
+      virtual basic_streambuf<char_type,_Traits>*
+      setbuf(char_type*, streamsize)
+      { return this; }
+      virtual pos_type
+      seekoff(off_type, ios_base::seekdir,
+       ios_base::openmode = ios_base::in | ios_base::out)
+      { return pos_type(off_type(-1)); }
+      virtual pos_type
+      seekpos(pos_type,
+       ios_base::openmode = ios_base::in | ios_base::out)
+      { return pos_type(off_type(-1)); }
+      virtual int
+      sync() { return 0; }
+      virtual streamsize
+      showmanyc() { return 0; }
+      virtual streamsize
+      xsgetn(char_type* __s, streamsize __n);
+      virtual int_type
+      underflow()
+      { return traits_type::eof(); }
+      virtual int_type
+      uflow()
+      {
+ int_type __ret = traits_type::eof();
+ const bool __testeof = traits_type::eq_int_type(this->underflow(),
+       __ret);
+ if (!__testeof)
+   {
+     __ret = traits_type::to_int_type(*this->gptr());
+     this->gbump(1);
+   }
+ return __ret;
+      }
+      virtual int_type
+      pbackfail(int_type __c __attribute__ ((__unused__)) = traits_type::eof())
+      { return traits_type::eof(); }
+      virtual streamsize
+      xsputn(const char_type* __s, streamsize __n);
+      virtual int_type
+      overflow(int_type __c __attribute__ ((__unused__)) = traits_type::eof())
+      { return traits_type::eof(); }
+
+
+
+    public:
+      [[__deprecated__("stossc is deprecated, use sbumpc instead")]]
+
+      void
+      stossc()
+      {
+ if (this->gptr() < this->egptr())
+   this->gbump(1);
+ else
+   this->uflow();
+      }
+
+
+
+      void
+      __safe_gbump(streamsize __n) { _M_in_cur += __n; }
+
+      void
+      __safe_pbump(streamsize __n) { _M_out_cur += __n; }
+
+
+
+
+    protected:
+
+      basic_streambuf(const basic_streambuf&);
+
+      basic_streambuf&
+      operator=(const basic_streambuf&);
+
+
+      void
+      swap(basic_streambuf& __sb)
+      {
+ std::swap(_M_in_beg, __sb._M_in_beg);
+ std::swap(_M_in_cur, __sb._M_in_cur);
+ std::swap(_M_in_end, __sb._M_in_end);
+ std::swap(_M_out_beg, __sb._M_out_beg);
+ std::swap(_M_out_cur, __sb._M_out_cur);
+ std::swap(_M_out_end, __sb._M_out_end);
+ std::swap(_M_buf_locale, __sb._M_buf_locale);
+      }
+
+    };
+
+
+  template<typename _CharT, typename _Traits>
+    std::basic_streambuf<_CharT, _Traits>::
+    basic_streambuf(const basic_streambuf&) = default;
+
+  template<typename _CharT, typename _Traits>
+    std::basic_streambuf<_CharT, _Traits>&
+    std::basic_streambuf<_CharT, _Traits>::
+    operator=(const basic_streambuf&) = default;
+
+
+
+  template<>
+    streamsize
+    __copy_streambufs_eof(basic_streambuf<char>* __sbin,
+     basic_streambuf<char>* __sbout, bool& __ineof);
+
+  template<>
+    streamsize
+    __copy_streambufs_eof(basic_streambuf<wchar_t>* __sbin,
+     basic_streambuf<wchar_t>* __sbout, bool& __ineof);
+
+
+
+
+
+}
+
+       
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  template<typename _CharT, typename _Traits>
+    streamsize
+    basic_streambuf<_CharT, _Traits>::
+    xsgetn(char_type* __s, streamsize __n)
+    {
+      streamsize __ret = 0;
+      while (__ret < __n)
+ {
+   const streamsize __buf_len = this->egptr() - this->gptr();
+   if (__buf_len)
+     {
+       const streamsize __remaining = __n - __ret;
+       const streamsize __len = std::min(__buf_len, __remaining);
+       traits_type::copy(__s, this->gptr(), __len);
+       __ret += __len;
+       __s += __len;
+       this->__safe_gbump(__len);
+     }
+
+   if (__ret < __n)
+     {
+       const int_type __c = this->uflow();
+       if (!traits_type::eq_int_type(__c, traits_type::eof()))
+  {
+    traits_type::assign(*__s++, traits_type::to_char_type(__c));
+    ++__ret;
+  }
+       else
+  break;
+     }
+ }
+      return __ret;
+    }
+
+  template<typename _CharT, typename _Traits>
+    streamsize
+    basic_streambuf<_CharT, _Traits>::
+    xsputn(const char_type* __s, streamsize __n)
+    {
+      streamsize __ret = 0;
+      while (__ret < __n)
+ {
+   const streamsize __buf_len = this->epptr() - this->pptr();
+   if (__buf_len)
+     {
+       const streamsize __remaining = __n - __ret;
+       const streamsize __len = std::min(__buf_len, __remaining);
+       traits_type::copy(this->pptr(), __s, __len);
+       __ret += __len;
+       __s += __len;
+       this->__safe_pbump(__len);
+     }
+
+   if (__ret < __n)
+     {
+       int_type __c = this->overflow(traits_type::to_int_type(*__s));
+       if (!traits_type::eq_int_type(__c, traits_type::eof()))
+  {
+    ++__ret;
+    ++__s;
+  }
+       else
+  break;
+     }
+ }
+      return __ret;
+    }
+
+
+
+
+  template<typename _CharT, typename _Traits>
+    streamsize
+    __copy_streambufs_eof(basic_streambuf<_CharT, _Traits>* __sbin,
+     basic_streambuf<_CharT, _Traits>* __sbout,
+     bool& __ineof)
+    {
+      streamsize __ret = 0;
+      __ineof = true;
+      typename _Traits::int_type __c = __sbin->sgetc();
+      while (!_Traits::eq_int_type(__c, _Traits::eof()))
+ {
+   __c = __sbout->sputc(_Traits::to_char_type(__c));
+   if (_Traits::eq_int_type(__c, _Traits::eof()))
+     {
+       __ineof = false;
+       break;
+     }
+   ++__ret;
+   __c = __sbin->snextc();
+ }
+      return __ret;
+    }
+
+  template<typename _CharT, typename _Traits>
+    inline streamsize
+    __copy_streambufs(basic_streambuf<_CharT, _Traits>* __sbin,
+        basic_streambuf<_CharT, _Traits>* __sbout)
+    {
+      bool __ineof;
+      return __copy_streambufs_eof(__sbin, __sbout, __ineof);
+    }
+
+
+
+
+  extern template class basic_streambuf<char>;
+  extern template
+    streamsize
+    __copy_streambufs(basic_streambuf<char>*,
+        basic_streambuf<char>*);
+  extern template
+    streamsize
+    __copy_streambufs_eof(basic_streambuf<char>*,
+     basic_streambuf<char>*, bool&);
+
+
+  extern template class basic_streambuf<wchar_t>;
+  extern template
+    streamsize
+    __copy_streambufs(basic_streambuf<wchar_t>*,
+        basic_streambuf<wchar_t>*);
+  extern template
+    streamsize
+    __copy_streambufs_eof(basic_streambuf<wchar_t>*,
+     basic_streambuf<wchar_t>*, bool&);
+
+
+
+
+}
+       
+
+
+
+       
+
+       
+typedef unsigned long int wctype_t;
+enum
+{
+  __ISwupper = 0,
+  __ISwlower = 1,
+  __ISwalpha = 2,
+  __ISwdigit = 3,
+  __ISwxdigit = 4,
+  __ISwspace = 5,
+  __ISwprint = 6,
+  __ISwgraph = 7,
+  __ISwblank = 8,
+  __ISwcntrl = 9,
+  __ISwpunct = 10,
+  __ISwalnum = 11,
+
+  _ISwupper = ((__ISwupper) < 8 ? (int) ((1UL << (__ISwupper)) << 24) : ((__ISwupper) < 16 ? (int) ((1UL << (__ISwupper)) << 8) : ((__ISwupper) < 24 ? (int) ((1UL << (__ISwupper)) >> 8) : (int) ((1UL << (__ISwupper)) >> 24)))),
+  _ISwlower = ((__ISwlower) < 8 ? (int) ((1UL << (__ISwlower)) << 24) : ((__ISwlower) < 16 ? (int) ((1UL << (__ISwlower)) << 8) : ((__ISwlower) < 24 ? (int) ((1UL << (__ISwlower)) >> 8) : (int) ((1UL << (__ISwlower)) >> 24)))),
+  _ISwalpha = ((__ISwalpha) < 8 ? (int) ((1UL << (__ISwalpha)) << 24) : ((__ISwalpha) < 16 ? (int) ((1UL << (__ISwalpha)) << 8) : ((__ISwalpha) < 24 ? (int) ((1UL << (__ISwalpha)) >> 8) : (int) ((1UL << (__ISwalpha)) >> 24)))),
+  _ISwdigit = ((__ISwdigit) < 8 ? (int) ((1UL << (__ISwdigit)) << 24) : ((__ISwdigit) < 16 ? (int) ((1UL << (__ISwdigit)) << 8) : ((__ISwdigit) < 24 ? (int) ((1UL << (__ISwdigit)) >> 8) : (int) ((1UL << (__ISwdigit)) >> 24)))),
+  _ISwxdigit = ((__ISwxdigit) < 8 ? (int) ((1UL << (__ISwxdigit)) << 24) : ((__ISwxdigit) < 16 ? (int) ((1UL << (__ISwxdigit)) << 8) : ((__ISwxdigit) < 24 ? (int) ((1UL << (__ISwxdigit)) >> 8) : (int) ((1UL << (__ISwxdigit)) >> 24)))),
+  _ISwspace = ((__ISwspace) < 8 ? (int) ((1UL << (__ISwspace)) << 24) : ((__ISwspace) < 16 ? (int) ((1UL << (__ISwspace)) << 8) : ((__ISwspace) < 24 ? (int) ((1UL << (__ISwspace)) >> 8) : (int) ((1UL << (__ISwspace)) >> 24)))),
+  _ISwprint = ((__ISwprint) < 8 ? (int) ((1UL << (__ISwprint)) << 24) : ((__ISwprint) < 16 ? (int) ((1UL << (__ISwprint)) << 8) : ((__ISwprint) < 24 ? (int) ((1UL << (__ISwprint)) >> 8) : (int) ((1UL << (__ISwprint)) >> 24)))),
+  _ISwgraph = ((__ISwgraph) < 8 ? (int) ((1UL << (__ISwgraph)) << 24) : ((__ISwgraph) < 16 ? (int) ((1UL << (__ISwgraph)) << 8) : ((__ISwgraph) < 24 ? (int) ((1UL << (__ISwgraph)) >> 8) : (int) ((1UL << (__ISwgraph)) >> 24)))),
+  _ISwblank = ((__ISwblank) < 8 ? (int) ((1UL << (__ISwblank)) << 24) : ((__ISwblank) < 16 ? (int) ((1UL << (__ISwblank)) << 8) : ((__ISwblank) < 24 ? (int) ((1UL << (__ISwblank)) >> 8) : (int) ((1UL << (__ISwblank)) >> 24)))),
+  _ISwcntrl = ((__ISwcntrl) < 8 ? (int) ((1UL << (__ISwcntrl)) << 24) : ((__ISwcntrl) < 16 ? (int) ((1UL << (__ISwcntrl)) << 8) : ((__ISwcntrl) < 24 ? (int) ((1UL << (__ISwcntrl)) >> 8) : (int) ((1UL << (__ISwcntrl)) >> 24)))),
+  _ISwpunct = ((__ISwpunct) < 8 ? (int) ((1UL << (__ISwpunct)) << 24) : ((__ISwpunct) < 16 ? (int) ((1UL << (__ISwpunct)) << 8) : ((__ISwpunct) < 24 ? (int) ((1UL << (__ISwpunct)) >> 8) : (int) ((1UL << (__ISwpunct)) >> 24)))),
+  _ISwalnum = ((__ISwalnum) < 8 ? (int) ((1UL << (__ISwalnum)) << 24) : ((__ISwalnum) < 16 ? (int) ((1UL << (__ISwalnum)) << 8) : ((__ISwalnum) < 24 ? (int) ((1UL << (__ISwalnum)) >> 8) : (int) ((1UL << (__ISwalnum)) >> 24))))
+};
+
+
+
+extern "C" {
+
+
+
+
+
+
+
+extern int iswalnum (wint_t __wc) throw ();
+
+
+
+
+
+extern int iswalpha (wint_t __wc) throw ();
+
+
+extern int iswcntrl (wint_t __wc) throw ();
+
+
+
+extern int iswdigit (wint_t __wc) throw ();
+
+
+
+extern int iswgraph (wint_t __wc) throw ();
+
+
+
+
+extern int iswlower (wint_t __wc) throw ();
+
+
+extern int iswprint (wint_t __wc) throw ();
+
+
+
+
+extern int iswpunct (wint_t __wc) throw ();
+
+
+
+
+extern int iswspace (wint_t __wc) throw ();
+
+
+
+
+extern int iswupper (wint_t __wc) throw ();
+
+
+
+
+extern int iswxdigit (wint_t __wc) throw ();
+
+
+
+
+
+extern int iswblank (wint_t __wc) throw ();
+extern wctype_t wctype (const char *__property) throw ();
+
+
+
+extern int iswctype (wint_t __wc, wctype_t __desc) throw ();
+
+
+
+
+
+
+extern wint_t towlower (wint_t __wc) throw ();
+
+
+extern wint_t towupper (wint_t __wc) throw ();
+
+}
+
+
+
+
+
+extern "C" {
+
+
+
+typedef const __int32_t *wctrans_t;
+
+
+
+extern wctrans_t wctrans (const char *__property) throw ();
+
+
+extern wint_t towctrans (wint_t __wc, wctrans_t __desc) throw ();
+
+
+
+
+
+
+
+extern int iswalnum_l (wint_t __wc, locale_t __locale) throw ();
+
+
+
+
+
+extern int iswalpha_l (wint_t __wc, locale_t __locale) throw ();
+
+
+extern int iswcntrl_l (wint_t __wc, locale_t __locale) throw ();
+
+
+
+extern int iswdigit_l (wint_t __wc, locale_t __locale) throw ();
+
+
+
+extern int iswgraph_l (wint_t __wc, locale_t __locale) throw ();
+
+
+
+
+extern int iswlower_l (wint_t __wc, locale_t __locale) throw ();
+
+
+extern int iswprint_l (wint_t __wc, locale_t __locale) throw ();
+
+
+
+
+extern int iswpunct_l (wint_t __wc, locale_t __locale) throw ();
+
+
+
+
+extern int iswspace_l (wint_t __wc, locale_t __locale) throw ();
+
+
+
+
+extern int iswupper_l (wint_t __wc, locale_t __locale) throw ();
+
+
+
+
+extern int iswxdigit_l (wint_t __wc, locale_t __locale) throw ();
+
+
+
+
+extern int iswblank_l (wint_t __wc, locale_t __locale) throw ();
+
+
+
+extern wctype_t wctype_l (const char *__property, locale_t __locale)
+     throw ();
+
+
+
+extern int iswctype_l (wint_t __wc, wctype_t __desc, locale_t __locale)
+     throw ();
+
+
+
+
+
+
+extern wint_t towlower_l (wint_t __wc, locale_t __locale) throw ();
+
+
+extern wint_t towupper_l (wint_t __wc, locale_t __locale) throw ();
+
+
+
+extern wctrans_t wctrans_l (const char *__property, locale_t __locale)
+     throw ();
+
+
+extern wint_t towctrans_l (wint_t __wc, wctrans_t __desc,
+      locale_t __locale) throw ();
+
+
+
+}
+namespace std
+{
+  using ::wctrans_t;
+  using ::wctype_t;
+  using ::wint_t;
+
+  using ::iswalnum;
+  using ::iswalpha;
+
+  using ::iswblank;
+
+  using ::iswcntrl;
+  using ::iswctype;
+  using ::iswdigit;
+  using ::iswgraph;
+  using ::iswlower;
+  using ::iswprint;
+  using ::iswpunct;
+  using ::iswspace;
+  using ::iswupper;
+  using ::iswxdigit;
+  using ::towctrans;
+  using ::towlower;
+  using ::towupper;
+  using ::wctrans;
+  using ::wctype;
+}
+       
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+  struct ctype_base
+  {
+
+    typedef const int* __to_type;
+
+
+
+    typedef unsigned short mask;
+    static const mask upper = _ISupper;
+    static const mask lower = _ISlower;
+    static const mask alpha = _ISalpha;
+    static const mask digit = _ISdigit;
+    static const mask xdigit = _ISxdigit;
+    static const mask space = _ISspace;
+    static const mask print = _ISprint;
+    static const mask graph = _ISalpha | _ISdigit | _ISpunct;
+    static const mask cntrl = _IScntrl;
+    static const mask punct = _ISpunct;
+    static const mask alnum = _ISalpha | _ISdigit;
+
+    static const mask blank = _ISblank;
+
+  };
+
+
+}
+
+
+
+
+
+
+       
+
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _CharT, typename _Traits>
+    class istreambuf_iterator
+    : public iterator<input_iterator_tag, _CharT, typename _Traits::off_type,
+        _CharT*,
+
+
+        _CharT>
+
+
+
+    {
+    public:
+
+
+
+      typedef _CharT char_type;
+      typedef _Traits traits_type;
+      typedef typename _Traits::int_type int_type;
+      typedef basic_streambuf<_CharT, _Traits> streambuf_type;
+      typedef basic_istream<_CharT, _Traits> istream_type;
+
+
+      template<typename _CharT2>
+ friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
+        ostreambuf_iterator<_CharT2> >::__type
+ copy(istreambuf_iterator<_CharT2>, istreambuf_iterator<_CharT2>,
+      ostreambuf_iterator<_CharT2>);
+
+      template<bool _IsMove, typename _CharT2>
+ friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
+            _CharT2*>::__type
+ __copy_move_a2(istreambuf_iterator<_CharT2>,
+         istreambuf_iterator<_CharT2>, _CharT2*);
+
+      template<typename _CharT2>
+ friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
+        istreambuf_iterator<_CharT2> >::__type
+ find(istreambuf_iterator<_CharT2>, istreambuf_iterator<_CharT2>,
+      const _CharT2&);
+
+      template<typename _CharT2, typename _Distance>
+ friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
+            void>::__type
+ advance(istreambuf_iterator<_CharT2>&, _Distance);
+
+    private:
+
+
+
+
+
+
+
+      mutable streambuf_type* _M_sbuf;
+      int_type _M_c;
+
+    public:
+
+      constexpr istreambuf_iterator() noexcept
+      : _M_sbuf(0), _M_c(traits_type::eof()) { }
+
+
+      istreambuf_iterator(const istreambuf_iterator&) noexcept = default;
+
+      ~istreambuf_iterator() = default;
+
+
+
+      istreambuf_iterator(istream_type& __s) noexcept
+      : _M_sbuf(__s.rdbuf()), _M_c(traits_type::eof()) { }
+
+
+      istreambuf_iterator(streambuf_type* __s) noexcept
+      : _M_sbuf(__s), _M_c(traits_type::eof()) { }
+
+
+
+
+      char_type
+      operator*() const
+      {
+ int_type __c = _M_get();
+ return traits_type::to_char_type(__c);
+      }
+
+
+      istreambuf_iterator&
+      operator++()
+      {
+
+
+
+                        ;
+
+ _M_sbuf->sbumpc();
+ _M_c = traits_type::eof();
+ return *this;
+      }
+
+
+      istreambuf_iterator
+      operator++(int)
+      {
+
+
+
+                        ;
+
+ istreambuf_iterator __old = *this;
+ __old._M_c = _M_sbuf->sbumpc();
+ _M_c = traits_type::eof();
+ return __old;
+      }
+
+
+
+
+
+      bool
+      equal(const istreambuf_iterator& __b) const
+      { return _M_at_eof() == __b._M_at_eof(); }
+
+    private:
+      int_type
+      _M_get() const
+      {
+ int_type __ret = _M_c;
+ if (_M_sbuf && _S_is_eof(__ret) && _S_is_eof(__ret = _M_sbuf->sgetc()))
+   _M_sbuf = 0;
+ return __ret;
+      }
+
+      bool
+      _M_at_eof() const
+      { return _S_is_eof(_M_get()); }
+
+      static bool
+      _S_is_eof(int_type __c)
+      {
+ const int_type __eof = traits_type::eof();
+ return traits_type::eq_int_type(__c, __eof);
+      }
+    };
+
+  template<typename _CharT, typename _Traits>
+    inline bool
+    operator==(const istreambuf_iterator<_CharT, _Traits>& __a,
+        const istreambuf_iterator<_CharT, _Traits>& __b)
+    { return __a.equal(__b); }
+
+  template<typename _CharT, typename _Traits>
+    inline bool
+    operator!=(const istreambuf_iterator<_CharT, _Traits>& __a,
+        const istreambuf_iterator<_CharT, _Traits>& __b)
+    { return !__a.equal(__b); }
+
+
+  template<typename _CharT, typename _Traits>
+    class ostreambuf_iterator
+    : public iterator<output_iterator_tag, void, void, void, void>
+    {
+    public:
+
+
+
+      typedef _CharT char_type;
+      typedef _Traits traits_type;
+      typedef basic_streambuf<_CharT, _Traits> streambuf_type;
+      typedef basic_ostream<_CharT, _Traits> ostream_type;
+
+
+      template<typename _CharT2>
+ friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
+        ostreambuf_iterator<_CharT2> >::__type
+ copy(istreambuf_iterator<_CharT2>, istreambuf_iterator<_CharT2>,
+      ostreambuf_iterator<_CharT2>);
+
+    private:
+      streambuf_type* _M_sbuf;
+      bool _M_failed;
+
+    public:
+
+      ostreambuf_iterator(ostream_type& __s) noexcept
+      : _M_sbuf(__s.rdbuf()), _M_failed(!_M_sbuf) { }
+
+
+      ostreambuf_iterator(streambuf_type* __s) noexcept
+      : _M_sbuf(__s), _M_failed(!_M_sbuf) { }
+
+
+      ostreambuf_iterator&
+      operator=(_CharT __c)
+      {
+ if (!_M_failed &&
+     _Traits::eq_int_type(_M_sbuf->sputc(__c), _Traits::eof()))
+   _M_failed = true;
+ return *this;
+      }
+
+
+      ostreambuf_iterator&
+      operator*()
+      { return *this; }
+
+
+      ostreambuf_iterator&
+      operator++(int)
+      { return *this; }
+
+
+      ostreambuf_iterator&
+      operator++()
+      { return *this; }
+
+
+      bool
+      failed() const noexcept
+      { return _M_failed; }
+
+      ostreambuf_iterator&
+      _M_put(const _CharT* __ws, streamsize __len)
+      {
+ if (__builtin_expect(!_M_failed, true)
+     && __builtin_expect(this->_M_sbuf->sputn(__ws, __len) != __len,
+    false))
+   _M_failed = true;
+ return *this;
+      }
+    };
+
+
+  template<typename _CharT>
+    typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
+        ostreambuf_iterator<_CharT> >::__type
+    copy(istreambuf_iterator<_CharT> __first,
+  istreambuf_iterator<_CharT> __last,
+  ostreambuf_iterator<_CharT> __result)
+    {
+      if (__first._M_sbuf && !__last._M_sbuf && !__result._M_failed)
+ {
+   bool __ineof;
+   __copy_streambufs_eof(__first._M_sbuf, __result._M_sbuf, __ineof);
+   if (!__ineof)
+     __result._M_failed = true;
+ }
+      return __result;
+    }
+
+  template<bool _IsMove, typename _CharT>
+    typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
+        ostreambuf_iterator<_CharT> >::__type
+    __copy_move_a2(_CharT* __first, _CharT* __last,
+     ostreambuf_iterator<_CharT> __result)
+    {
+      const streamsize __num = __last - __first;
+      if (__num > 0)
+ __result._M_put(__first, __num);
+      return __result;
+    }
+
+  template<bool _IsMove, typename _CharT>
+    typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
+        ostreambuf_iterator<_CharT> >::__type
+    __copy_move_a2(const _CharT* __first, const _CharT* __last,
+     ostreambuf_iterator<_CharT> __result)
+    {
+      const streamsize __num = __last - __first;
+      if (__num > 0)
+ __result._M_put(__first, __num);
+      return __result;
+    }
+
+  template<bool _IsMove, typename _CharT>
+    typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
+        _CharT*>::__type
+    __copy_move_a2(istreambuf_iterator<_CharT> __first,
+     istreambuf_iterator<_CharT> __last, _CharT* __result)
+    {
+      typedef istreambuf_iterator<_CharT> __is_iterator_type;
+      typedef typename __is_iterator_type::traits_type traits_type;
+      typedef typename __is_iterator_type::streambuf_type streambuf_type;
+      typedef typename traits_type::int_type int_type;
+
+      if (__first._M_sbuf && !__last._M_sbuf)
+ {
+   streambuf_type* __sb = __first._M_sbuf;
+   int_type __c = __sb->sgetc();
+   while (!traits_type::eq_int_type(__c, traits_type::eof()))
+     {
+       const streamsize __n = __sb->egptr() - __sb->gptr();
+       if (__n > 1)
+  {
+    traits_type::copy(__result, __sb->gptr(), __n);
+    __sb->__safe_gbump(__n);
+    __result += __n;
+    __c = __sb->underflow();
+  }
+       else
+  {
+    *__result++ = traits_type::to_char_type(__c);
+    __c = __sb->snextc();
+  }
+     }
+ }
+      return __result;
+    }
+
+  template<typename _CharT>
+    typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
+          istreambuf_iterator<_CharT> >::__type
+    find(istreambuf_iterator<_CharT> __first,
+  istreambuf_iterator<_CharT> __last, const _CharT& __val)
+    {
+      typedef istreambuf_iterator<_CharT> __is_iterator_type;
+      typedef typename __is_iterator_type::traits_type traits_type;
+      typedef typename __is_iterator_type::streambuf_type streambuf_type;
+      typedef typename traits_type::int_type int_type;
+      const int_type __eof = traits_type::eof();
+
+      if (__first._M_sbuf && !__last._M_sbuf)
+ {
+   const int_type __ival = traits_type::to_int_type(__val);
+   streambuf_type* __sb = __first._M_sbuf;
+   int_type __c = __sb->sgetc();
+   while (!traits_type::eq_int_type(__c, __eof)
+   && !traits_type::eq_int_type(__c, __ival))
+     {
+       streamsize __n = __sb->egptr() - __sb->gptr();
+       if (__n > 1)
+  {
+    const _CharT* __p = traits_type::find(__sb->gptr(),
+       __n, __val);
+    if (__p)
+      __n = __p - __sb->gptr();
+    __sb->__safe_gbump(__n);
+    __c = __sb->sgetc();
+  }
+       else
+  __c = __sb->snextc();
+     }
+
+   __first._M_c = __eof;
+ }
+
+      return __first;
+    }
+
+  template<typename _CharT, typename _Distance>
+    typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
+        void>::__type
+    advance(istreambuf_iterator<_CharT>& __i, _Distance __n)
+    {
+      if (__n == 0)
+ return;
+
+      ;
+     
+
+                           ;
+
+      typedef istreambuf_iterator<_CharT> __is_iterator_type;
+      typedef typename __is_iterator_type::traits_type traits_type;
+      typedef typename __is_iterator_type::streambuf_type streambuf_type;
+      typedef typename traits_type::int_type int_type;
+      const int_type __eof = traits_type::eof();
+
+      streambuf_type* __sb = __i._M_sbuf;
+      while (__n > 0)
+ {
+   streamsize __size = __sb->egptr() - __sb->gptr();
+   if (__size > __n)
+     {
+       __sb->__safe_gbump(__n);
+       break;
+     }
+
+   __sb->__safe_gbump(__size);
+   __n -= __size;
+   if (traits_type::eq_int_type(__sb->underflow(), __eof))
+     {
+      
+
+                      ;
+       break;
+     }
+ }
+
+      __i._M_c = __eof;
+    }
+
+
+
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _Tp>
+    void
+    __convert_to_v(const char*, _Tp&, ios_base::iostate&,
+     const __c_locale&) throw();
+
+
+  template<>
+    void
+    __convert_to_v(const char*, float&, ios_base::iostate&,
+     const __c_locale&) throw();
+
+  template<>
+    void
+    __convert_to_v(const char*, double&, ios_base::iostate&,
+     const __c_locale&) throw();
+
+  template<>
+    void
+    __convert_to_v(const char*, long double&, ios_base::iostate&,
+     const __c_locale&) throw();
+
+
+
+  template<typename _CharT, typename _Traits>
+    struct __pad
+    {
+      static void
+      _S_pad(ios_base& __io, _CharT __fill, _CharT* __news,
+      const _CharT* __olds, streamsize __newlen, streamsize __oldlen);
+    };
+
+
+
+
+
+
+  template<typename _CharT>
+    _CharT*
+    __add_grouping(_CharT* __s, _CharT __sep,
+     const char* __gbeg, size_t __gsize,
+     const _CharT* __first, const _CharT* __last);
+
+
+
+
+  template<typename _CharT>
+    inline
+    ostreambuf_iterator<_CharT>
+    __write(ostreambuf_iterator<_CharT> __s, const _CharT* __ws, int __len)
+    {
+      __s._M_put(__ws, __len);
+      return __s;
+    }
+
+
+  template<typename _CharT, typename _OutIter>
+    inline
+    _OutIter
+    __write(_OutIter __s, const _CharT* __ws, int __len)
+    {
+      for (int __j = 0; __j < __len; __j++, ++__s)
+ *__s = __ws[__j];
+      return __s;
+    }
+  template<typename _CharT>
+    class __ctype_abstract_base : public locale::facet, public ctype_base
+    {
+    public:
+
+
+      typedef _CharT char_type;
+      bool
+      is(mask __m, char_type __c) const
+      { return this->do_is(__m, __c); }
+      const char_type*
+      is(const char_type *__lo, const char_type *__hi, mask *__vec) const
+      { return this->do_is(__lo, __hi, __vec); }
+      const char_type*
+      scan_is(mask __m, const char_type* __lo, const char_type* __hi) const
+      { return this->do_scan_is(__m, __lo, __hi); }
+      const char_type*
+      scan_not(mask __m, const char_type* __lo, const char_type* __hi) const
+      { return this->do_scan_not(__m, __lo, __hi); }
+      char_type
+      toupper(char_type __c) const
+      { return this->do_toupper(__c); }
+      const char_type*
+      toupper(char_type *__lo, const char_type* __hi) const
+      { return this->do_toupper(__lo, __hi); }
+      char_type
+      tolower(char_type __c) const
+      { return this->do_tolower(__c); }
+      const char_type*
+      tolower(char_type* __lo, const char_type* __hi) const
+      { return this->do_tolower(__lo, __hi); }
+      char_type
+      widen(char __c) const
+      { return this->do_widen(__c); }
+      const char*
+      widen(const char* __lo, const char* __hi, char_type* __to) const
+      { return this->do_widen(__lo, __hi, __to); }
+      char
+      narrow(char_type __c, char __dfault) const
+      { return this->do_narrow(__c, __dfault); }
+      const char_type*
+      narrow(const char_type* __lo, const char_type* __hi,
+       char __dfault, char* __to) const
+      { return this->do_narrow(__lo, __hi, __dfault, __to); }
+
+    protected:
+      explicit
+      __ctype_abstract_base(size_t __refs = 0): facet(__refs) { }
+
+      virtual
+      ~__ctype_abstract_base() { }
+      virtual bool
+      do_is(mask __m, char_type __c) const = 0;
+      virtual const char_type*
+      do_is(const char_type* __lo, const char_type* __hi,
+     mask* __vec) const = 0;
+      virtual const char_type*
+      do_scan_is(mask __m, const char_type* __lo,
+   const char_type* __hi) const = 0;
+      virtual const char_type*
+      do_scan_not(mask __m, const char_type* __lo,
+    const char_type* __hi) const = 0;
+      virtual char_type
+      do_toupper(char_type __c) const = 0;
+      virtual const char_type*
+      do_toupper(char_type* __lo, const char_type* __hi) const = 0;
+      virtual char_type
+      do_tolower(char_type __c) const = 0;
+      virtual const char_type*
+      do_tolower(char_type* __lo, const char_type* __hi) const = 0;
+      virtual char_type
+      do_widen(char __c) const = 0;
+      virtual const char*
+      do_widen(const char* __lo, const char* __hi, char_type* __to) const = 0;
+      virtual char
+      do_narrow(char_type __c, char __dfault) const = 0;
+      virtual const char_type*
+      do_narrow(const char_type* __lo, const char_type* __hi,
+  char __dfault, char* __to) const = 0;
+    };
+  template<typename _CharT>
+    class ctype : public __ctype_abstract_base<_CharT>
+    {
+    public:
+
+      typedef _CharT char_type;
+      typedef typename __ctype_abstract_base<_CharT>::mask mask;
+
+
+      static locale::id id;
+
+      explicit
+      ctype(size_t __refs = 0) : __ctype_abstract_base<_CharT>(__refs) { }
+
+   protected:
+      virtual
+      ~ctype();
+
+      virtual bool
+      do_is(mask __m, char_type __c) const;
+
+      virtual const char_type*
+      do_is(const char_type* __lo, const char_type* __hi, mask* __vec) const;
+
+      virtual const char_type*
+      do_scan_is(mask __m, const char_type* __lo, const char_type* __hi) const;
+
+      virtual const char_type*
+      do_scan_not(mask __m, const char_type* __lo,
+    const char_type* __hi) const;
+
+      virtual char_type
+      do_toupper(char_type __c) const;
+
+      virtual const char_type*
+      do_toupper(char_type* __lo, const char_type* __hi) const;
+
+      virtual char_type
+      do_tolower(char_type __c) const;
+
+      virtual const char_type*
+      do_tolower(char_type* __lo, const char_type* __hi) const;
+
+      virtual char_type
+      do_widen(char __c) const;
+
+      virtual const char*
+      do_widen(const char* __lo, const char* __hi, char_type* __dest) const;
+
+      virtual char
+      do_narrow(char_type, char __dfault) const;
+
+      virtual const char_type*
+      do_narrow(const char_type* __lo, const char_type* __hi,
+  char __dfault, char* __to) const;
+    };
+
+  template<typename _CharT>
+    locale::id ctype<_CharT>::id;
+  template<>
+    class ctype<char> : public locale::facet, public ctype_base
+    {
+    public:
+
+
+      typedef char char_type;
+
+    protected:
+
+      __c_locale _M_c_locale_ctype;
+      bool _M_del;
+      __to_type _M_toupper;
+      __to_type _M_tolower;
+      const mask* _M_table;
+      mutable char _M_widen_ok;
+      mutable char _M_widen[1 + static_cast<unsigned char>(-1)];
+      mutable char _M_narrow[1 + static_cast<unsigned char>(-1)];
+      mutable char _M_narrow_ok;
+
+
+    public:
+
+      static locale::id id;
+
+      static const size_t table_size = 1 + static_cast<unsigned char>(-1);
+      explicit
+      ctype(const mask* __table = 0, bool __del = false, size_t __refs = 0);
+      explicit
+      ctype(__c_locale __cloc, const mask* __table = 0, bool __del = false,
+     size_t __refs = 0);
+      inline bool
+      is(mask __m, char __c) const;
+      inline const char*
+      is(const char* __lo, const char* __hi, mask* __vec) const;
+      inline const char*
+      scan_is(mask __m, const char* __lo, const char* __hi) const;
+      inline const char*
+      scan_not(mask __m, const char* __lo, const char* __hi) const;
+      char_type
+      toupper(char_type __c) const
+      { return this->do_toupper(__c); }
+      const char_type*
+      toupper(char_type *__lo, const char_type* __hi) const
+      { return this->do_toupper(__lo, __hi); }
+      char_type
+      tolower(char_type __c) const
+      { return this->do_tolower(__c); }
+      const char_type*
+      tolower(char_type* __lo, const char_type* __hi) const
+      { return this->do_tolower(__lo, __hi); }
+      char_type
+      widen(char __c) const
+      {
+ if (_M_widen_ok)
+   return _M_widen[static_cast<unsigned char>(__c)];
+ this->_M_widen_init();
+ return this->do_widen(__c);
+      }
+      const char*
+      widen(const char* __lo, const char* __hi, char_type* __to) const
+      {
+ if (_M_widen_ok == 1)
+   {
+     __builtin_memcpy(__to, __lo, __hi - __lo);
+     return __hi;
+   }
+ if (!_M_widen_ok)
+   _M_widen_init();
+ return this->do_widen(__lo, __hi, __to);
+      }
+      char
+      narrow(char_type __c, char __dfault) const
+      {
+ if (_M_narrow[static_cast<unsigned char>(__c)])
+   return _M_narrow[static_cast<unsigned char>(__c)];
+ const char __t = do_narrow(__c, __dfault);
+ if (__t != __dfault)
+   _M_narrow[static_cast<unsigned char>(__c)] = __t;
+ return __t;
+      }
+      const char_type*
+      narrow(const char_type* __lo, const char_type* __hi,
+      char __dfault, char* __to) const
+      {
+ if (__builtin_expect(_M_narrow_ok == 1, true))
+   {
+     __builtin_memcpy(__to, __lo, __hi - __lo);
+     return __hi;
+   }
+ if (!_M_narrow_ok)
+   _M_narrow_init();
+ return this->do_narrow(__lo, __hi, __dfault, __to);
+      }
+
+
+
+
+
+      const mask*
+      table() const throw()
+      { return _M_table; }
+
+
+      static const mask*
+      classic_table() throw();
+    protected:
+
+
+
+
+
+
+
+      virtual
+      ~ctype();
+      virtual char_type
+      do_toupper(char_type __c) const;
+      virtual const char_type*
+      do_toupper(char_type* __lo, const char_type* __hi) const;
+      virtual char_type
+      do_tolower(char_type __c) const;
+      virtual const char_type*
+      do_tolower(char_type* __lo, const char_type* __hi) const;
+      virtual char_type
+      do_widen(char __c) const
+      { return __c; }
+      virtual const char*
+      do_widen(const char* __lo, const char* __hi, char_type* __to) const
+      {
+ __builtin_memcpy(__to, __lo, __hi - __lo);
+ return __hi;
+      }
+      virtual char
+      do_narrow(char_type __c, char __dfault __attribute__((__unused__))) const
+      { return __c; }
+      virtual const char_type*
+      do_narrow(const char_type* __lo, const char_type* __hi,
+  char __dfault __attribute__((__unused__)), char* __to) const
+      {
+ __builtin_memcpy(__to, __lo, __hi - __lo);
+ return __hi;
+      }
+
+    private:
+      void _M_narrow_init() const;
+      void _M_widen_init() const;
+    };
+  template<>
+    class ctype<wchar_t> : public __ctype_abstract_base<wchar_t>
+    {
+    public:
+
+
+      typedef wchar_t char_type;
+      typedef wctype_t __wmask_type;
+
+    protected:
+      __c_locale _M_c_locale_ctype;
+
+
+      bool _M_narrow_ok;
+      char _M_narrow[128];
+      wint_t _M_widen[1 + static_cast<unsigned char>(-1)];
+
+
+      mask _M_bit[16];
+      __wmask_type _M_wmask[16];
+
+    public:
+
+
+      static locale::id id;
+      explicit
+      ctype(size_t __refs = 0);
+      explicit
+      ctype(__c_locale __cloc, size_t __refs = 0);
+
+    protected:
+      __wmask_type
+      _M_convert_to_wmask(const mask __m) const throw();
+
+
+      virtual
+      ~ctype();
+      virtual bool
+      do_is(mask __m, char_type __c) const;
+      virtual const char_type*
+      do_is(const char_type* __lo, const char_type* __hi, mask* __vec) const;
+      virtual const char_type*
+      do_scan_is(mask __m, const char_type* __lo, const char_type* __hi) const;
+      virtual const char_type*
+      do_scan_not(mask __m, const char_type* __lo,
+    const char_type* __hi) const;
+      virtual char_type
+      do_toupper(char_type __c) const;
+      virtual const char_type*
+      do_toupper(char_type* __lo, const char_type* __hi) const;
+      virtual char_type
+      do_tolower(char_type __c) const;
+      virtual const char_type*
+      do_tolower(char_type* __lo, const char_type* __hi) const;
+      virtual char_type
+      do_widen(char __c) const;
+      virtual const char*
+      do_widen(const char* __lo, const char* __hi, char_type* __to) const;
+      virtual char
+      do_narrow(char_type __c, char __dfault) const;
+      virtual const char_type*
+      do_narrow(const char_type* __lo, const char_type* __hi,
+  char __dfault, char* __to) const;
+
+
+      void
+      _M_initialize_ctype() throw();
+    };
+
+
+
+  template<typename _CharT>
+    class ctype_byname : public ctype<_CharT>
+    {
+    public:
+      typedef typename ctype<_CharT>::mask mask;
+
+      explicit
+      ctype_byname(const char* __s, size_t __refs = 0);
+
+
+      explicit
+      ctype_byname(const string& __s, size_t __refs = 0)
+      : ctype_byname(__s.c_str(), __refs) { }
+
+
+    protected:
+      virtual
+      ~ctype_byname() { }
+    };
+
+
+  template<>
+    class ctype_byname<char> : public ctype<char>
+    {
+    public:
+      explicit
+      ctype_byname(const char* __s, size_t __refs = 0);
+
+
+      explicit
+      ctype_byname(const string& __s, size_t __refs = 0);
+
+
+    protected:
+      virtual
+      ~ctype_byname();
+    };
+
+
+  template<>
+    class ctype_byname<wchar_t> : public ctype<wchar_t>
+    {
+    public:
+      explicit
+      ctype_byname(const char* __s, size_t __refs = 0);
+
+
+      explicit
+      ctype_byname(const string& __s, size_t __refs = 0);
+
+
+    protected:
+      virtual
+      ~ctype_byname();
+    };
+
+
+
+}
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  bool
+  ctype<char>::
+  is(mask __m, char __c) const
+  { return _M_table[static_cast<unsigned char>(__c)] & __m; }
+
+  const char*
+  ctype<char>::
+  is(const char* __low, const char* __high, mask* __vec) const
+  {
+    while (__low < __high)
+      *__vec++ = _M_table[static_cast<unsigned char>(*__low++)];
+    return __high;
+  }
+
+  const char*
+  ctype<char>::
+  scan_is(mask __m, const char* __low, const char* __high) const
+  {
+    while (__low < __high
+    && !(_M_table[static_cast<unsigned char>(*__low)] & __m))
+      ++__low;
+    return __low;
+  }
+
+  const char*
+  ctype<char>::
+  scan_not(mask __m, const char* __low, const char* __high) const
+  {
+    while (__low < __high
+    && (_M_table[static_cast<unsigned char>(*__low)] & __m) != 0)
+      ++__low;
+    return __low;
+  }
+
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+  class __num_base
+  {
+  public:
+
+
+    enum
+      {
+ _S_ominus,
+ _S_oplus,
+ _S_ox,
+ _S_oX,
+ _S_odigits,
+ _S_odigits_end = _S_odigits + 16,
+ _S_oudigits = _S_odigits_end,
+ _S_oudigits_end = _S_oudigits + 16,
+ _S_oe = _S_odigits + 14,
+ _S_oE = _S_oudigits + 14,
+ _S_oend = _S_oudigits_end
+      };
+
+
+
+
+
+
+    static const char* _S_atoms_out;
+
+
+
+    static const char* _S_atoms_in;
+
+    enum
+    {
+      _S_iminus,
+      _S_iplus,
+      _S_ix,
+      _S_iX,
+      _S_izero,
+      _S_ie = _S_izero + 14,
+      _S_iE = _S_izero + 20,
+      _S_iend = 26
+    };
+
+
+
+    static void
+    _S_format_float(const ios_base& __io, char* __fptr, char __mod) throw();
+  };
+
+  template<typename _CharT>
+    struct __numpunct_cache : public locale::facet
+    {
+      const char* _M_grouping;
+      size_t _M_grouping_size;
+      bool _M_use_grouping;
+      const _CharT* _M_truename;
+      size_t _M_truename_size;
+      const _CharT* _M_falsename;
+      size_t _M_falsename_size;
+      _CharT _M_decimal_point;
+      _CharT _M_thousands_sep;
+
+
+
+
+
+      _CharT _M_atoms_out[__num_base::_S_oend];
+
+
+
+
+
+      _CharT _M_atoms_in[__num_base::_S_iend];
+
+      bool _M_allocated;
+
+      __numpunct_cache(size_t __refs = 0)
+      : facet(__refs), _M_grouping(0), _M_grouping_size(0),
+ _M_use_grouping(false),
+ _M_truename(0), _M_truename_size(0), _M_falsename(0),
+ _M_falsename_size(0), _M_decimal_point(_CharT()),
+ _M_thousands_sep(_CharT()), _M_allocated(false)
+ { }
+
+      ~__numpunct_cache();
+
+      void
+      _M_cache(const locale& __loc);
+
+    private:
+      __numpunct_cache&
+      operator=(const __numpunct_cache&);
+
+      explicit
+      __numpunct_cache(const __numpunct_cache&);
+    };
+
+  template<typename _CharT>
+    __numpunct_cache<_CharT>::~__numpunct_cache()
+    {
+      if (_M_allocated)
+ {
+   delete [] _M_grouping;
+   delete [] _M_truename;
+   delete [] _M_falsename;
+ }
+    }
+
+namespace __cxx11 {
+  template<typename _CharT>
+    class numpunct : public locale::facet
+    {
+    public:
+
+
+
+      typedef _CharT char_type;
+      typedef basic_string<_CharT> string_type;
+
+      typedef __numpunct_cache<_CharT> __cache_type;
+
+    protected:
+      __cache_type* _M_data;
+
+    public:
+
+      static locale::id id;
+
+
+
+
+
+
+      explicit
+      numpunct(size_t __refs = 0)
+      : facet(__refs), _M_data(0)
+      { _M_initialize_numpunct(); }
+      explicit
+      numpunct(__cache_type* __cache, size_t __refs = 0)
+      : facet(__refs), _M_data(__cache)
+      { _M_initialize_numpunct(); }
+      explicit
+      numpunct(__c_locale __cloc, size_t __refs = 0)
+      : facet(__refs), _M_data(0)
+      { _M_initialize_numpunct(__cloc); }
+      char_type
+      decimal_point() const
+      { return this->do_decimal_point(); }
+      char_type
+      thousands_sep() const
+      { return this->do_thousands_sep(); }
+      string
+      grouping() const
+      { return this->do_grouping(); }
+      string_type
+      truename() const
+      { return this->do_truename(); }
+      string_type
+      falsename() const
+      { return this->do_falsename(); }
+
+    protected:
+
+      virtual
+      ~numpunct();
+      virtual char_type
+      do_decimal_point() const
+      { return _M_data->_M_decimal_point; }
+      virtual char_type
+      do_thousands_sep() const
+      { return _M_data->_M_thousands_sep; }
+      virtual string
+      do_grouping() const
+      { return _M_data->_M_grouping; }
+      virtual string_type
+      do_truename() const
+      { return _M_data->_M_truename; }
+      virtual string_type
+      do_falsename() const
+      { return _M_data->_M_falsename; }
+
+
+      void
+      _M_initialize_numpunct(__c_locale __cloc = 0);
+    };
+
+  template<typename _CharT>
+    locale::id numpunct<_CharT>::id;
+
+  template<>
+    numpunct<char>::~numpunct();
+
+  template<>
+    void
+    numpunct<char>::_M_initialize_numpunct(__c_locale __cloc);
+
+
+  template<>
+    numpunct<wchar_t>::~numpunct();
+
+  template<>
+    void
+    numpunct<wchar_t>::_M_initialize_numpunct(__c_locale __cloc);
+
+
+
+  template<typename _CharT>
+    class numpunct_byname : public numpunct<_CharT>
+    {
+    public:
+      typedef _CharT char_type;
+      typedef basic_string<_CharT> string_type;
+
+      explicit
+      numpunct_byname(const char* __s, size_t __refs = 0)
+      : numpunct<_CharT>(__refs)
+      {
+ if (__builtin_strcmp(__s, "C") != 0
+     && __builtin_strcmp(__s, "POSIX") != 0)
+   {
+     __c_locale __tmp;
+     this->_S_create_c_locale(__tmp, __s);
+     this->_M_initialize_numpunct(__tmp);
+     this->_S_destroy_c_locale(__tmp);
+   }
+      }
+
+
+      explicit
+      numpunct_byname(const string& __s, size_t __refs = 0)
+      : numpunct_byname(__s.c_str(), __refs) { }
+
+
+    protected:
+      virtual
+      ~numpunct_byname() { }
+    };
+
+}
+
+
+  template<typename _CharT, typename _InIter>
+    class num_get : public locale::facet
+    {
+    public:
+
+
+
+      typedef _CharT char_type;
+      typedef _InIter iter_type;
+
+
+
+      static locale::id id;
+      explicit
+      num_get(size_t __refs = 0) : facet(__refs) { }
+      iter_type
+      get(iter_type __in, iter_type __end, ios_base& __io,
+   ios_base::iostate& __err, bool& __v) const
+      { return this->do_get(__in, __end, __io, __err, __v); }
+      iter_type
+      get(iter_type __in, iter_type __end, ios_base& __io,
+   ios_base::iostate& __err, long& __v) const
+      { return this->do_get(__in, __end, __io, __err, __v); }
+
+      iter_type
+      get(iter_type __in, iter_type __end, ios_base& __io,
+   ios_base::iostate& __err, unsigned short& __v) const
+      { return this->do_get(__in, __end, __io, __err, __v); }
+
+      iter_type
+      get(iter_type __in, iter_type __end, ios_base& __io,
+   ios_base::iostate& __err, unsigned int& __v) const
+      { return this->do_get(__in, __end, __io, __err, __v); }
+
+      iter_type
+      get(iter_type __in, iter_type __end, ios_base& __io,
+   ios_base::iostate& __err, unsigned long& __v) const
+      { return this->do_get(__in, __end, __io, __err, __v); }
+
+
+      iter_type
+      get(iter_type __in, iter_type __end, ios_base& __io,
+   ios_base::iostate& __err, long long& __v) const
+      { return this->do_get(__in, __end, __io, __err, __v); }
+
+      iter_type
+      get(iter_type __in, iter_type __end, ios_base& __io,
+   ios_base::iostate& __err, unsigned long long& __v) const
+      { return this->do_get(__in, __end, __io, __err, __v); }
+      iter_type
+      get(iter_type __in, iter_type __end, ios_base& __io,
+   ios_base::iostate& __err, float& __v) const
+      { return this->do_get(__in, __end, __io, __err, __v); }
+
+      iter_type
+      get(iter_type __in, iter_type __end, ios_base& __io,
+   ios_base::iostate& __err, double& __v) const
+      { return this->do_get(__in, __end, __io, __err, __v); }
+
+      iter_type
+      get(iter_type __in, iter_type __end, ios_base& __io,
+   ios_base::iostate& __err, long double& __v) const
+      { return this->do_get(__in, __end, __io, __err, __v); }
+      iter_type
+      get(iter_type __in, iter_type __end, ios_base& __io,
+   ios_base::iostate& __err, void*& __v) const
+      { return this->do_get(__in, __end, __io, __err, __v); }
+
+    protected:
+
+      virtual ~num_get() { }
+
+      __attribute ((__abi_tag__ ("cxx11")))
+      iter_type
+      _M_extract_float(iter_type, iter_type, ios_base&, ios_base::iostate&,
+         string&) const;
+
+      template<typename _ValueT>
+ __attribute ((__abi_tag__ ("cxx11")))
+ iter_type
+ _M_extract_int(iter_type, iter_type, ios_base&, ios_base::iostate&,
+         _ValueT&) const;
+
+      template<typename _CharT2>
+      typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value, int>::__type
+ _M_find(const _CharT2*, size_t __len, _CharT2 __c) const
+ {
+   int __ret = -1;
+   if (__len <= 10)
+     {
+       if (__c >= _CharT2('0') && __c < _CharT2(_CharT2('0') + __len))
+  __ret = __c - _CharT2('0');
+     }
+   else
+     {
+       if (__c >= _CharT2('0') && __c <= _CharT2('9'))
+  __ret = __c - _CharT2('0');
+       else if (__c >= _CharT2('a') && __c <= _CharT2('f'))
+  __ret = 10 + (__c - _CharT2('a'));
+       else if (__c >= _CharT2('A') && __c <= _CharT2('F'))
+  __ret = 10 + (__c - _CharT2('A'));
+     }
+   return __ret;
+ }
+
+      template<typename _CharT2>
+      typename __gnu_cxx::__enable_if<!__is_char<_CharT2>::__value,
+          int>::__type
+ _M_find(const _CharT2* __zero, size_t __len, _CharT2 __c) const
+ {
+   int __ret = -1;
+   const char_type* __q = char_traits<_CharT2>::find(__zero, __len, __c);
+   if (__q)
+     {
+       __ret = __q - __zero;
+       if (__ret > 15)
+  __ret -= 6;
+     }
+   return __ret;
+ }
+      virtual iter_type
+      do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, bool&) const;
+
+      virtual iter_type
+      do_get(iter_type __beg, iter_type __end, ios_base& __io,
+      ios_base::iostate& __err, long& __v) const
+      { return _M_extract_int(__beg, __end, __io, __err, __v); }
+
+      virtual iter_type
+      do_get(iter_type __beg, iter_type __end, ios_base& __io,
+      ios_base::iostate& __err, unsigned short& __v) const
+      { return _M_extract_int(__beg, __end, __io, __err, __v); }
+
+      virtual iter_type
+      do_get(iter_type __beg, iter_type __end, ios_base& __io,
+      ios_base::iostate& __err, unsigned int& __v) const
+      { return _M_extract_int(__beg, __end, __io, __err, __v); }
+
+      virtual iter_type
+      do_get(iter_type __beg, iter_type __end, ios_base& __io,
+      ios_base::iostate& __err, unsigned long& __v) const
+      { return _M_extract_int(__beg, __end, __io, __err, __v); }
+
+
+      virtual iter_type
+      do_get(iter_type __beg, iter_type __end, ios_base& __io,
+      ios_base::iostate& __err, long long& __v) const
+      { return _M_extract_int(__beg, __end, __io, __err, __v); }
+
+      virtual iter_type
+      do_get(iter_type __beg, iter_type __end, ios_base& __io,
+      ios_base::iostate& __err, unsigned long long& __v) const
+      { return _M_extract_int(__beg, __end, __io, __err, __v); }
+
+
+      virtual iter_type
+      do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, float&) const;
+
+      virtual iter_type
+      do_get(iter_type, iter_type, ios_base&, ios_base::iostate&,
+      double&) const;
+
+
+
+
+
+
+
+      virtual iter_type
+      do_get(iter_type, iter_type, ios_base&, ios_base::iostate&,
+      long double&) const;
+
+
+      virtual iter_type
+      do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, void*&) const;
+    };
+
+  template<typename _CharT, typename _InIter>
+    locale::id num_get<_CharT, _InIter>::id;
+  template<typename _CharT, typename _OutIter>
+    class num_put : public locale::facet
+    {
+    public:
+
+
+
+      typedef _CharT char_type;
+      typedef _OutIter iter_type;
+
+
+
+      static locale::id id;
+      explicit
+      num_put(size_t __refs = 0) : facet(__refs) { }
+      iter_type
+      put(iter_type __s, ios_base& __io, char_type __fill, bool __v) const
+      { return this->do_put(__s, __io, __fill, __v); }
+      iter_type
+      put(iter_type __s, ios_base& __io, char_type __fill, long __v) const
+      { return this->do_put(__s, __io, __fill, __v); }
+
+      iter_type
+      put(iter_type __s, ios_base& __io, char_type __fill,
+   unsigned long __v) const
+      { return this->do_put(__s, __io, __fill, __v); }
+
+
+      iter_type
+      put(iter_type __s, ios_base& __io, char_type __fill, long long __v) const
+      { return this->do_put(__s, __io, __fill, __v); }
+
+      iter_type
+      put(iter_type __s, ios_base& __io, char_type __fill,
+   unsigned long long __v) const
+      { return this->do_put(__s, __io, __fill, __v); }
+      iter_type
+      put(iter_type __s, ios_base& __io, char_type __fill, double __v) const
+      { return this->do_put(__s, __io, __fill, __v); }
+
+      iter_type
+      put(iter_type __s, ios_base& __io, char_type __fill,
+   long double __v) const
+      { return this->do_put(__s, __io, __fill, __v); }
+      iter_type
+      put(iter_type __s, ios_base& __io, char_type __fill,
+   const void* __v) const
+      { return this->do_put(__s, __io, __fill, __v); }
+
+    protected:
+      template<typename _ValueT>
+ iter_type
+ _M_insert_float(iter_type, ios_base& __io, char_type __fill,
+   char __mod, _ValueT __v) const;
+
+      void
+      _M_group_float(const char* __grouping, size_t __grouping_size,
+       char_type __sep, const char_type* __p, char_type* __new,
+       char_type* __cs, int& __len) const;
+
+      template<typename _ValueT>
+ iter_type
+ _M_insert_int(iter_type, ios_base& __io, char_type __fill,
+        _ValueT __v) const;
+
+      void
+      _M_group_int(const char* __grouping, size_t __grouping_size,
+     char_type __sep, ios_base& __io, char_type* __new,
+     char_type* __cs, int& __len) const;
+
+      void
+      _M_pad(char_type __fill, streamsize __w, ios_base& __io,
+      char_type* __new, const char_type* __cs, int& __len) const;
+
+
+      virtual
+      ~num_put() { }
+      virtual iter_type
+      do_put(iter_type __s, ios_base& __io, char_type __fill, bool __v) const;
+
+      virtual iter_type
+      do_put(iter_type __s, ios_base& __io, char_type __fill, long __v) const
+      { return _M_insert_int(__s, __io, __fill, __v); }
+
+      virtual iter_type
+      do_put(iter_type __s, ios_base& __io, char_type __fill,
+      unsigned long __v) const
+      { return _M_insert_int(__s, __io, __fill, __v); }
+
+
+      virtual iter_type
+      do_put(iter_type __s, ios_base& __io, char_type __fill,
+      long long __v) const
+      { return _M_insert_int(__s, __io, __fill, __v); }
+
+      virtual iter_type
+      do_put(iter_type __s, ios_base& __io, char_type __fill,
+      unsigned long long __v) const
+      { return _M_insert_int(__s, __io, __fill, __v); }
+
+
+      virtual iter_type
+      do_put(iter_type, ios_base&, char_type, double) const;
+
+
+
+
+
+
+      virtual iter_type
+      do_put(iter_type, ios_base&, char_type, long double) const;
+
+
+      virtual iter_type
+      do_put(iter_type, ios_base&, char_type, const void*) const;
+
+
+
+
+
+
+
+    };
+
+  template <typename _CharT, typename _OutIter>
+    locale::id num_put<_CharT, _OutIter>::id;
+
+
+
+
+
+
+
+
+
+  template<typename _CharT>
+    inline bool
+    isspace(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::space, __c); }
+
+
+  template<typename _CharT>
+    inline bool
+    isprint(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::print, __c); }
+
+
+  template<typename _CharT>
+    inline bool
+    iscntrl(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::cntrl, __c); }
+
+
+  template<typename _CharT>
+    inline bool
+    isupper(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::upper, __c); }
+
+
+  template<typename _CharT>
+    inline bool
+    islower(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::lower, __c); }
+
+
+  template<typename _CharT>
+    inline bool
+    isalpha(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::alpha, __c); }
+
+
+  template<typename _CharT>
+    inline bool
+    isdigit(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::digit, __c); }
+
+
+  template<typename _CharT>
+    inline bool
+    ispunct(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::punct, __c); }
+
+
+  template<typename _CharT>
+    inline bool
+    isxdigit(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::xdigit, __c); }
+
+
+  template<typename _CharT>
+    inline bool
+    isalnum(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::alnum, __c); }
+
+
+  template<typename _CharT>
+    inline bool
+    isgraph(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::graph, __c); }
+
+
+
+  template<typename _CharT>
+    inline bool
+    isblank(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::blank, __c); }
+
+
+
+  template<typename _CharT>
+    inline _CharT
+    toupper(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).toupper(__c); }
+
+
+  template<typename _CharT>
+    inline _CharT
+    tolower(_CharT __c, const locale& __loc)
+    { return use_facet<ctype<_CharT> >(__loc).tolower(__c); }
+
+
+}
+
+       
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+  template<typename _Facet>
+    struct __use_cache
+    {
+      const _Facet*
+      operator() (const locale& __loc) const;
+    };
+
+
+  template<typename _CharT>
+    struct __use_cache<__numpunct_cache<_CharT> >
+    {
+      const __numpunct_cache<_CharT>*
+      operator() (const locale& __loc) const
+      {
+ const size_t __i = numpunct<_CharT>::id._M_id();
+ const locale::facet** __caches = __loc._M_impl->_M_caches;
+ if (!__caches[__i])
+   {
+     __numpunct_cache<_CharT>* __tmp = 0;
+     try
+       {
+  __tmp = new __numpunct_cache<_CharT>;
+  __tmp->_M_cache(__loc);
+       }
+     catch(...)
+       {
+  delete __tmp;
+  throw;
+       }
+     __loc._M_impl->_M_install_cache(__tmp, __i);
+   }
+ return static_cast<const __numpunct_cache<_CharT>*>(__caches[__i]);
+      }
+    };
+
+  template<typename _CharT>
+    void
+    __numpunct_cache<_CharT>::_M_cache(const locale& __loc)
+    {
+      const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);
+
+      char* __grouping = 0;
+      _CharT* __truename = 0;
+      _CharT* __falsename = 0;
+      try
+ {
+   const string& __g = __np.grouping();
+   _M_grouping_size = __g.size();
+   __grouping = new char[_M_grouping_size];
+   __g.copy(__grouping, _M_grouping_size);
+   _M_use_grouping = (_M_grouping_size
+        && static_cast<signed char>(__grouping[0]) > 0
+        && (__grouping[0]
+     != __gnu_cxx::__numeric_traits<char>::__max));
+
+   const basic_string<_CharT>& __tn = __np.truename();
+   _M_truename_size = __tn.size();
+   __truename = new _CharT[_M_truename_size];
+   __tn.copy(__truename, _M_truename_size);
+
+   const basic_string<_CharT>& __fn = __np.falsename();
+   _M_falsename_size = __fn.size();
+   __falsename = new _CharT[_M_falsename_size];
+   __fn.copy(__falsename, _M_falsename_size);
+
+   _M_decimal_point = __np.decimal_point();
+   _M_thousands_sep = __np.thousands_sep();
+
+   const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__loc);
+   __ct.widen(__num_base::_S_atoms_out,
+       __num_base::_S_atoms_out
+       + __num_base::_S_oend, _M_atoms_out);
+   __ct.widen(__num_base::_S_atoms_in,
+       __num_base::_S_atoms_in
+       + __num_base::_S_iend, _M_atoms_in);
+
+   _M_grouping = __grouping;
+   _M_truename = __truename;
+   _M_falsename = __falsename;
+   _M_allocated = true;
+ }
+      catch(...)
+ {
+   delete [] __grouping;
+   delete [] __truename;
+   delete [] __falsename;
+   throw;
+ }
+    }
+  __attribute__ ((__pure__)) bool
+  __verify_grouping(const char* __grouping, size_t __grouping_size,
+      const string& __grouping_tmp) throw ();
+
+
+
+  template<typename _CharT, typename _InIter>
+    __attribute ((__abi_tag__ ("cxx11")))
+    _InIter
+    num_get<_CharT, _InIter>::
+    _M_extract_float(_InIter __beg, _InIter __end, ios_base& __io,
+       ios_base::iostate& __err, string& __xtrc) const
+    {
+      typedef char_traits<_CharT> __traits_type;
+      typedef __numpunct_cache<_CharT> __cache_type;
+      __use_cache<__cache_type> __uc;
+      const locale& __loc = __io._M_getloc();
+      const __cache_type* __lc = __uc(__loc);
+      const _CharT* __lit = __lc->_M_atoms_in;
+      char_type __c = char_type();
+
+
+      bool __testeof = __beg == __end;
+
+
+      if (!__testeof)
+ {
+   __c = *__beg;
+   const bool __plus = __c == __lit[__num_base::_S_iplus];
+   if ((__plus || __c == __lit[__num_base::_S_iminus])
+       && !(__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
+       && !(__c == __lc->_M_decimal_point))
+     {
+       __xtrc += __plus ? '+' : '-';
+       if (++__beg != __end)
+  __c = *__beg;
+       else
+  __testeof = true;
+     }
+ }
+
+
+      bool __found_mantissa = false;
+      int __sep_pos = 0;
+      while (!__testeof)
+ {
+   if ((__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
+       || __c == __lc->_M_decimal_point)
+     break;
+   else if (__c == __lit[__num_base::_S_izero])
+     {
+       if (!__found_mantissa)
+  {
+    __xtrc += '0';
+    __found_mantissa = true;
+  }
+       ++__sep_pos;
+
+       if (++__beg != __end)
+  __c = *__beg;
+       else
+  __testeof = true;
+     }
+   else
+     break;
+ }
+
+
+      bool __found_dec = false;
+      bool __found_sci = false;
+      string __found_grouping;
+      if (__lc->_M_use_grouping)
+ __found_grouping.reserve(32);
+      const char_type* __lit_zero = __lit + __num_base::_S_izero;
+
+      if (!__lc->_M_allocated)
+
+ while (!__testeof)
+   {
+     const int __digit = _M_find(__lit_zero, 10, __c);
+     if (__digit != -1)
+       {
+  __xtrc += '0' + __digit;
+  __found_mantissa = true;
+       }
+     else if (__c == __lc->_M_decimal_point
+       && !__found_dec && !__found_sci)
+       {
+  __xtrc += '.';
+  __found_dec = true;
+       }
+     else if ((__c == __lit[__num_base::_S_ie]
+        || __c == __lit[__num_base::_S_iE])
+       && !__found_sci && __found_mantissa)
+       {
+
+  __xtrc += 'e';
+  __found_sci = true;
+
+
+  if (++__beg != __end)
+    {
+      __c = *__beg;
+      const bool __plus = __c == __lit[__num_base::_S_iplus];
+      if (__plus || __c == __lit[__num_base::_S_iminus])
+        __xtrc += __plus ? '+' : '-';
+      else
+        continue;
+    }
+  else
+    {
+      __testeof = true;
+      break;
+    }
+       }
+     else
+       break;
+
+     if (++__beg != __end)
+       __c = *__beg;
+     else
+       __testeof = true;
+   }
+      else
+ while (!__testeof)
+   {
+
+
+     if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
+       {
+  if (!__found_dec && !__found_sci)
+    {
+
+
+      if (__sep_pos)
+        {
+   __found_grouping += static_cast<char>(__sep_pos);
+   __sep_pos = 0;
+        }
+      else
+        {
+
+
+   __xtrc.clear();
+   break;
+        }
+    }
+  else
+    break;
+       }
+     else if (__c == __lc->_M_decimal_point)
+       {
+  if (!__found_dec && !__found_sci)
+    {
+
+
+
+      if (__found_grouping.size())
+        __found_grouping += static_cast<char>(__sep_pos);
+      __xtrc += '.';
+      __found_dec = true;
+    }
+  else
+    break;
+       }
+     else
+       {
+  const char_type* __q =
+    __traits_type::find(__lit_zero, 10, __c);
+  if (__q)
+    {
+      __xtrc += '0' + (__q - __lit_zero);
+      __found_mantissa = true;
+      ++__sep_pos;
+    }
+  else if ((__c == __lit[__num_base::_S_ie]
+     || __c == __lit[__num_base::_S_iE])
+    && !__found_sci && __found_mantissa)
+    {
+
+      if (__found_grouping.size() && !__found_dec)
+        __found_grouping += static_cast<char>(__sep_pos);
+      __xtrc += 'e';
+      __found_sci = true;
+
+
+      if (++__beg != __end)
+        {
+   __c = *__beg;
+   const bool __plus = __c == __lit[__num_base::_S_iplus];
+   if ((__plus || __c == __lit[__num_base::_S_iminus])
+       && !(__lc->_M_use_grouping
+     && __c == __lc->_M_thousands_sep)
+       && !(__c == __lc->_M_decimal_point))
+        __xtrc += __plus ? '+' : '-';
+   else
+     continue;
+        }
+      else
+        {
+   __testeof = true;
+   break;
+        }
+    }
+  else
+    break;
+       }
+
+     if (++__beg != __end)
+       __c = *__beg;
+     else
+       __testeof = true;
+   }
+
+
+
+      if (__found_grouping.size())
+        {
+
+   if (!__found_dec && !__found_sci)
+     __found_grouping += static_cast<char>(__sep_pos);
+
+          if (!std::__verify_grouping(__lc->_M_grouping,
+          __lc->_M_grouping_size,
+          __found_grouping))
+     __err = ios_base::failbit;
+        }
+
+      return __beg;
+    }
+
+  template<typename _CharT, typename _InIter>
+    template<typename _ValueT>
+      __attribute ((__abi_tag__ ("cxx11")))
+      _InIter
+      num_get<_CharT, _InIter>::
+      _M_extract_int(_InIter __beg, _InIter __end, ios_base& __io,
+       ios_base::iostate& __err, _ValueT& __v) const
+      {
+        typedef char_traits<_CharT> __traits_type;
+ using __gnu_cxx::__add_unsigned;
+ typedef typename __add_unsigned<_ValueT>::__type __unsigned_type;
+ typedef __numpunct_cache<_CharT> __cache_type;
+ __use_cache<__cache_type> __uc;
+ const locale& __loc = __io._M_getloc();
+ const __cache_type* __lc = __uc(__loc);
+ const _CharT* __lit = __lc->_M_atoms_in;
+ char_type __c = char_type();
+
+
+ const ios_base::fmtflags __basefield = __io.flags()
+                                        & ios_base::basefield;
+ const bool __oct = __basefield == ios_base::oct;
+ int __base = __oct ? 8 : (__basefield == ios_base::hex ? 16 : 10);
+
+
+ bool __testeof = __beg == __end;
+
+
+ bool __negative = false;
+ if (!__testeof)
+   {
+     __c = *__beg;
+     __negative = __c == __lit[__num_base::_S_iminus];
+     if ((__negative || __c == __lit[__num_base::_S_iplus])
+  && !(__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
+  && !(__c == __lc->_M_decimal_point))
+       {
+  if (++__beg != __end)
+    __c = *__beg;
+  else
+    __testeof = true;
+       }
+   }
+
+
+
+ bool __found_zero = false;
+ int __sep_pos = 0;
+ while (!__testeof)
+   {
+     if ((__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
+  || __c == __lc->_M_decimal_point)
+       break;
+     else if (__c == __lit[__num_base::_S_izero]
+       && (!__found_zero || __base == 10))
+       {
+  __found_zero = true;
+  ++__sep_pos;
+  if (__basefield == 0)
+    __base = 8;
+  if (__base == 8)
+    __sep_pos = 0;
+       }
+     else if (__found_zero
+       && (__c == __lit[__num_base::_S_ix]
+    || __c == __lit[__num_base::_S_iX]))
+       {
+  if (__basefield == 0)
+    __base = 16;
+  if (__base == 16)
+    {
+      __found_zero = false;
+      __sep_pos = 0;
+    }
+  else
+    break;
+       }
+     else
+       break;
+
+     if (++__beg != __end)
+       {
+  __c = *__beg;
+  if (!__found_zero)
+    break;
+       }
+     else
+       __testeof = true;
+   }
+
+
+
+ const size_t __len = (__base == 16 ? __num_base::_S_iend
+         - __num_base::_S_izero : __base);
+
+
+ typedef __gnu_cxx::__numeric_traits<_ValueT> __num_traits;
+ string __found_grouping;
+ if (__lc->_M_use_grouping)
+   __found_grouping.reserve(32);
+ bool __testfail = false;
+ bool __testoverflow = false;
+ const __unsigned_type __max =
+   (__negative && __num_traits::__is_signed)
+   ? -static_cast<__unsigned_type>(__num_traits::__min)
+   : __num_traits::__max;
+ const __unsigned_type __smax = __max / __base;
+ __unsigned_type __result = 0;
+ int __digit = 0;
+ const char_type* __lit_zero = __lit + __num_base::_S_izero;
+
+ if (!__lc->_M_allocated)
+
+   while (!__testeof)
+     {
+       __digit = _M_find(__lit_zero, __len, __c);
+       if (__digit == -1)
+  break;
+
+       if (__result > __smax)
+  __testoverflow = true;
+       else
+  {
+    __result *= __base;
+    __testoverflow |= __result > __max - __digit;
+    __result += __digit;
+    ++__sep_pos;
+  }
+
+       if (++__beg != __end)
+  __c = *__beg;
+       else
+  __testeof = true;
+     }
+ else
+   while (!__testeof)
+     {
+
+
+       if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
+  {
+
+
+    if (__sep_pos)
+      {
+        __found_grouping += static_cast<char>(__sep_pos);
+        __sep_pos = 0;
+      }
+    else
+      {
+        __testfail = true;
+        break;
+      }
+  }
+       else if (__c == __lc->_M_decimal_point)
+  break;
+       else
+  {
+    const char_type* __q =
+      __traits_type::find(__lit_zero, __len, __c);
+    if (!__q)
+      break;
+
+    __digit = __q - __lit_zero;
+    if (__digit > 15)
+      __digit -= 6;
+    if (__result > __smax)
+      __testoverflow = true;
+    else
+      {
+        __result *= __base;
+        __testoverflow |= __result > __max - __digit;
+        __result += __digit;
+        ++__sep_pos;
+      }
+  }
+
+       if (++__beg != __end)
+  __c = *__beg;
+       else
+  __testeof = true;
+     }
+
+
+
+ if (__found_grouping.size())
+   {
+
+     __found_grouping += static_cast<char>(__sep_pos);
+
+     if (!std::__verify_grouping(__lc->_M_grouping,
+     __lc->_M_grouping_size,
+     __found_grouping))
+       __err = ios_base::failbit;
+   }
+
+
+
+ if ((!__sep_pos && !__found_zero && !__found_grouping.size())
+     || __testfail)
+   {
+     __v = 0;
+     __err = ios_base::failbit;
+   }
+ else if (__testoverflow)
+   {
+     if (__negative && __num_traits::__is_signed)
+       __v = __num_traits::__min;
+     else
+       __v = __num_traits::__max;
+     __err = ios_base::failbit;
+   }
+ else
+   __v = __negative ? -__result : __result;
+
+ if (__testeof)
+   __err |= ios_base::eofbit;
+ return __beg;
+      }
+
+
+
+  template<typename _CharT, typename _InIter>
+    _InIter
+    num_get<_CharT, _InIter>::
+    do_get(iter_type __beg, iter_type __end, ios_base& __io,
+           ios_base::iostate& __err, bool& __v) const
+    {
+      if (!(__io.flags() & ios_base::boolalpha))
+        {
+
+
+
+   long __l = -1;
+          __beg = _M_extract_int(__beg, __end, __io, __err, __l);
+   if (__l == 0 || __l == 1)
+     __v = bool(__l);
+   else
+     {
+
+
+       __v = true;
+       __err = ios_base::failbit;
+       if (__beg == __end)
+  __err |= ios_base::eofbit;
+     }
+        }
+      else
+        {
+
+   typedef __numpunct_cache<_CharT> __cache_type;
+   __use_cache<__cache_type> __uc;
+   const locale& __loc = __io._M_getloc();
+   const __cache_type* __lc = __uc(__loc);
+
+   bool __testf = true;
+   bool __testt = true;
+   bool __donef = __lc->_M_falsename_size == 0;
+   bool __donet = __lc->_M_truename_size == 0;
+   bool __testeof = false;
+   size_t __n = 0;
+   while (!__donef || !__donet)
+     {
+       if (__beg == __end)
+  {
+    __testeof = true;
+    break;
+  }
+
+       const char_type __c = *__beg;
+
+       if (!__donef)
+  __testf = __c == __lc->_M_falsename[__n];
+
+       if (!__testf && __donet)
+  break;
+
+       if (!__donet)
+  __testt = __c == __lc->_M_truename[__n];
+
+       if (!__testt && __donef)
+  break;
+
+       if (!__testt && !__testf)
+  break;
+
+       ++__n;
+       ++__beg;
+
+       __donef = !__testf || __n >= __lc->_M_falsename_size;
+       __donet = !__testt || __n >= __lc->_M_truename_size;
+     }
+   if (__testf && __n == __lc->_M_falsename_size && __n)
+     {
+       __v = false;
+       if (__testt && __n == __lc->_M_truename_size)
+  __err = ios_base::failbit;
+       else
+  __err = __testeof ? ios_base::eofbit : ios_base::goodbit;
+     }
+   else if (__testt && __n == __lc->_M_truename_size && __n)
+     {
+       __v = true;
+       __err = __testeof ? ios_base::eofbit : ios_base::goodbit;
+     }
+   else
+     {
+
+
+       __v = false;
+       __err = ios_base::failbit;
+       if (__testeof)
+  __err |= ios_base::eofbit;
+     }
+ }
+      return __beg;
+    }
+
+  template<typename _CharT, typename _InIter>
+    _InIter
+    num_get<_CharT, _InIter>::
+    do_get(iter_type __beg, iter_type __end, ios_base& __io,
+    ios_base::iostate& __err, float& __v) const
+    {
+      string __xtrc;
+      __xtrc.reserve(32);
+      __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
+      std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
+      if (__beg == __end)
+ __err |= ios_base::eofbit;
+      return __beg;
+    }
+
+  template<typename _CharT, typename _InIter>
+    _InIter
+    num_get<_CharT, _InIter>::
+    do_get(iter_type __beg, iter_type __end, ios_base& __io,
+           ios_base::iostate& __err, double& __v) const
+    {
+      string __xtrc;
+      __xtrc.reserve(32);
+      __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
+      std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
+      if (__beg == __end)
+ __err |= ios_base::eofbit;
+      return __beg;
+    }
+  template<typename _CharT, typename _InIter>
+    _InIter
+    num_get<_CharT, _InIter>::
+    do_get(iter_type __beg, iter_type __end, ios_base& __io,
+           ios_base::iostate& __err, long double& __v) const
+    {
+      string __xtrc;
+      __xtrc.reserve(32);
+      __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
+      std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
+      if (__beg == __end)
+ __err |= ios_base::eofbit;
+      return __beg;
+    }
+
+  template<typename _CharT, typename _InIter>
+    _InIter
+    num_get<_CharT, _InIter>::
+    do_get(iter_type __beg, iter_type __end, ios_base& __io,
+           ios_base::iostate& __err, void*& __v) const
+    {
+
+      typedef ios_base::fmtflags fmtflags;
+      const fmtflags __fmt = __io.flags();
+      __io.flags((__fmt & ~ios_base::basefield) | ios_base::hex);
+
+      typedef __gnu_cxx::__conditional_type<(sizeof(void*)
+          <= sizeof(unsigned long)),
+ unsigned long, unsigned long long>::__type _UIntPtrType;
+
+      _UIntPtrType __ul;
+      __beg = _M_extract_int(__beg, __end, __io, __err, __ul);
+
+
+      __io.flags(__fmt);
+
+      __v = reinterpret_cast<void*>(__ul);
+      return __beg;
+    }
+
+
+
+  template<typename _CharT, typename _OutIter>
+    void
+    num_put<_CharT, _OutIter>::
+    _M_pad(_CharT __fill, streamsize __w, ios_base& __io,
+    _CharT* __new, const _CharT* __cs, int& __len) const
+    {
+
+
+      __pad<_CharT, char_traits<_CharT> >::_S_pad(__io, __fill, __new,
+        __cs, __w, __len);
+      __len = static_cast<int>(__w);
+    }
+
+
+
+  template<typename _CharT, typename _ValueT>
+    int
+    __int_to_char(_CharT* __bufend, _ValueT __v, const _CharT* __lit,
+    ios_base::fmtflags __flags, bool __dec)
+    {
+      _CharT* __buf = __bufend;
+      if (__builtin_expect(__dec, true))
+ {
+
+   do
+     {
+       *--__buf = __lit[(__v % 10) + __num_base::_S_odigits];
+       __v /= 10;
+     }
+   while (__v != 0);
+ }
+      else if ((__flags & ios_base::basefield) == ios_base::oct)
+ {
+
+   do
+     {
+       *--__buf = __lit[(__v & 0x7) + __num_base::_S_odigits];
+       __v >>= 3;
+     }
+   while (__v != 0);
+ }
+      else
+ {
+
+   const bool __uppercase = __flags & ios_base::uppercase;
+   const int __case_offset = __uppercase ? __num_base::_S_oudigits
+                                         : __num_base::_S_odigits;
+   do
+     {
+       *--__buf = __lit[(__v & 0xf) + __case_offset];
+       __v >>= 4;
+     }
+   while (__v != 0);
+ }
+      return __bufend - __buf;
+    }
+
+
+
+  template<typename _CharT, typename _OutIter>
+    void
+    num_put<_CharT, _OutIter>::
+    _M_group_int(const char* __grouping, size_t __grouping_size, _CharT __sep,
+   ios_base&, _CharT* __new, _CharT* __cs, int& __len) const
+    {
+      _CharT* __p = std::__add_grouping(__new, __sep, __grouping,
+     __grouping_size, __cs, __cs + __len);
+      __len = __p - __new;
+    }
+
+  template<typename _CharT, typename _OutIter>
+    template<typename _ValueT>
+      _OutIter
+      num_put<_CharT, _OutIter>::
+      _M_insert_int(_OutIter __s, ios_base& __io, _CharT __fill,
+      _ValueT __v) const
+      {
+ using __gnu_cxx::__add_unsigned;
+ typedef typename __add_unsigned<_ValueT>::__type __unsigned_type;
+ typedef __numpunct_cache<_CharT> __cache_type;
+ __use_cache<__cache_type> __uc;
+ const locale& __loc = __io._M_getloc();
+ const __cache_type* __lc = __uc(__loc);
+ const _CharT* __lit = __lc->_M_atoms_out;
+ const ios_base::fmtflags __flags = __io.flags();
+
+
+ const int __ilen = 5 * sizeof(_ValueT);
+ _CharT* __cs = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
+            * __ilen));
+
+
+
+ const ios_base::fmtflags __basefield = __flags & ios_base::basefield;
+ const bool __dec = (__basefield != ios_base::oct
+       && __basefield != ios_base::hex);
+ const __unsigned_type __u = ((__v > 0 || !__dec)
+         ? __unsigned_type(__v)
+         : -__unsigned_type(__v));
+  int __len = __int_to_char(__cs + __ilen, __u, __lit, __flags, __dec);
+ __cs += __ilen - __len;
+
+
+ if (__lc->_M_use_grouping)
+   {
+
+
+     _CharT* __cs2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
+          * (__len + 1)
+          * 2));
+     _M_group_int(__lc->_M_grouping, __lc->_M_grouping_size,
+    __lc->_M_thousands_sep, __io, __cs2 + 2, __cs, __len);
+     __cs = __cs2 + 2;
+   }
+
+
+ if (__builtin_expect(__dec, true))
+   {
+
+     if (__v >= 0)
+       {
+  if (bool(__flags & ios_base::showpos)
+      && __gnu_cxx::__numeric_traits<_ValueT>::__is_signed)
+    *--__cs = __lit[__num_base::_S_oplus], ++__len;
+       }
+     else
+       *--__cs = __lit[__num_base::_S_ominus], ++__len;
+   }
+ else if (bool(__flags & ios_base::showbase) && __v)
+   {
+     if (__basefield == ios_base::oct)
+       *--__cs = __lit[__num_base::_S_odigits], ++__len;
+     else
+       {
+
+  const bool __uppercase = __flags & ios_base::uppercase;
+  *--__cs = __lit[__num_base::_S_ox + __uppercase];
+
+  *--__cs = __lit[__num_base::_S_odigits];
+  __len += 2;
+       }
+   }
+
+
+ const streamsize __w = __io.width();
+ if (__w > static_cast<streamsize>(__len))
+   {
+     _CharT* __cs3 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
+          * __w));
+     _M_pad(__fill, __w, __io, __cs3, __cs, __len);
+     __cs = __cs3;
+   }
+ __io.width(0);
+
+
+
+ return std::__write(__s, __cs, __len);
+      }
+
+  template<typename _CharT, typename _OutIter>
+    void
+    num_put<_CharT, _OutIter>::
+    _M_group_float(const char* __grouping, size_t __grouping_size,
+     _CharT __sep, const _CharT* __p, _CharT* __new,
+     _CharT* __cs, int& __len) const
+    {
+
+
+
+      const int __declen = __p ? __p - __cs : __len;
+      _CharT* __p2 = std::__add_grouping(__new, __sep, __grouping,
+      __grouping_size,
+      __cs, __cs + __declen);
+
+
+      int __newlen = __p2 - __new;
+      if (__p)
+ {
+   char_traits<_CharT>::copy(__p2, __p, __len - __declen);
+   __newlen += __len - __declen;
+ }
+      __len = __newlen;
+    }
+  template<typename _CharT, typename _OutIter>
+    template<typename _ValueT>
+      _OutIter
+      num_put<_CharT, _OutIter>::
+      _M_insert_float(_OutIter __s, ios_base& __io, _CharT __fill, char __mod,
+         _ValueT __v) const
+      {
+ typedef __numpunct_cache<_CharT> __cache_type;
+ __use_cache<__cache_type> __uc;
+ const locale& __loc = __io._M_getloc();
+ const __cache_type* __lc = __uc(__loc);
+
+
+ const streamsize __prec = __io.precision() < 0 ? 6 : __io.precision();
+
+ const int __max_digits =
+   __gnu_cxx::__numeric_traits<_ValueT>::__digits10;
+
+
+ int __len;
+
+ char __fbuf[16];
+ __num_base::_S_format_float(__io, __fbuf, __mod);
+
+
+
+ const bool __use_prec =
+   (__io.flags() & ios_base::floatfield) != ios_base::floatfield;
+
+
+
+ int __cs_size = __max_digits * 3;
+ char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
+ if (__use_prec)
+   __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size,
+     __fbuf, __prec, __v);
+ else
+   __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size,
+     __fbuf, __v);
+
+
+ if (__len >= __cs_size)
+   {
+     __cs_size = __len + 1;
+     __cs = static_cast<char*>(__builtin_alloca(__cs_size));
+     if (__use_prec)
+       __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size,
+         __fbuf, __prec, __v);
+     else
+       __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size,
+         __fbuf, __v);
+   }
+ const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
+
+ _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
+            * __len));
+ __ctype.widen(__cs, __cs + __len, __ws);
+
+
+ _CharT* __wp = 0;
+ const char* __p = char_traits<char>::find(__cs, __len, '.');
+ if (__p)
+   {
+     __wp = __ws + (__p - __cs);
+     *__wp = __lc->_M_decimal_point;
+   }
+
+
+
+
+ if (__lc->_M_use_grouping
+     && (__wp || __len < 3 || (__cs[1] <= '9' && __cs[2] <= '9'
+          && __cs[1] >= '0' && __cs[2] >= '0')))
+   {
+
+
+     _CharT* __ws2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
+          * __len * 2));
+
+     streamsize __off = 0;
+     if (__cs[0] == '-' || __cs[0] == '+')
+       {
+  __off = 1;
+  __ws2[0] = __ws[0];
+  __len -= 1;
+       }
+
+     _M_group_float(__lc->_M_grouping, __lc->_M_grouping_size,
+      __lc->_M_thousands_sep, __wp, __ws2 + __off,
+      __ws + __off, __len);
+     __len += __off;
+
+     __ws = __ws2;
+   }
+
+
+ const streamsize __w = __io.width();
+ if (__w > static_cast<streamsize>(__len))
+   {
+     _CharT* __ws3 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
+          * __w));
+     _M_pad(__fill, __w, __io, __ws3, __ws, __len);
+     __ws = __ws3;
+   }
+ __io.width(0);
+
+
+
+ return std::__write(__s, __ws, __len);
+      }
+
+  template<typename _CharT, typename _OutIter>
+    _OutIter
+    num_put<_CharT, _OutIter>::
+    do_put(iter_type __s, ios_base& __io, char_type __fill, bool __v) const
+    {
+      const ios_base::fmtflags __flags = __io.flags();
+      if ((__flags & ios_base::boolalpha) == 0)
+        {
+          const long __l = __v;
+          __s = _M_insert_int(__s, __io, __fill, __l);
+        }
+      else
+        {
+   typedef __numpunct_cache<_CharT> __cache_type;
+   __use_cache<__cache_type> __uc;
+   const locale& __loc = __io._M_getloc();
+   const __cache_type* __lc = __uc(__loc);
+
+   const _CharT* __name = __v ? __lc->_M_truename
+                              : __lc->_M_falsename;
+   int __len = __v ? __lc->_M_truename_size
+                   : __lc->_M_falsename_size;
+
+   const streamsize __w = __io.width();
+   if (__w > static_cast<streamsize>(__len))
+     {
+       const streamsize __plen = __w - __len;
+       _CharT* __ps
+  = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
+       * __plen));
+
+       char_traits<_CharT>::assign(__ps, __plen, __fill);
+       __io.width(0);
+
+       if ((__flags & ios_base::adjustfield) == ios_base::left)
+  {
+    __s = std::__write(__s, __name, __len);
+    __s = std::__write(__s, __ps, __plen);
+  }
+       else
+  {
+    __s = std::__write(__s, __ps, __plen);
+    __s = std::__write(__s, __name, __len);
+  }
+       return __s;
+     }
+   __io.width(0);
+   __s = std::__write(__s, __name, __len);
+ }
+      return __s;
+    }
+
+  template<typename _CharT, typename _OutIter>
+    _OutIter
+    num_put<_CharT, _OutIter>::
+    do_put(iter_type __s, ios_base& __io, char_type __fill, double __v) const
+    { return _M_insert_float(__s, __io, __fill, char(), __v); }
+  template<typename _CharT, typename _OutIter>
+    _OutIter
+    num_put<_CharT, _OutIter>::
+    do_put(iter_type __s, ios_base& __io, char_type __fill,
+    long double __v) const
+    { return _M_insert_float(__s, __io, __fill, 'L', __v); }
+
+  template<typename _CharT, typename _OutIter>
+    _OutIter
+    num_put<_CharT, _OutIter>::
+    do_put(iter_type __s, ios_base& __io, char_type __fill,
+           const void* __v) const
+    {
+      const ios_base::fmtflags __flags = __io.flags();
+      const ios_base::fmtflags __fmt = ~(ios_base::basefield
+      | ios_base::uppercase);
+      __io.flags((__flags & __fmt) | (ios_base::hex | ios_base::showbase));
+
+      typedef __gnu_cxx::__conditional_type<(sizeof(const void*)
+          <= sizeof(unsigned long)),
+ unsigned long, unsigned long long>::__type _UIntPtrType;
+
+      __s = _M_insert_int(__s, __io, __fill,
+     reinterpret_cast<_UIntPtrType>(__v));
+      __io.flags(__flags);
+      return __s;
+    }
+
+
+  template<typename _CharT, typename _Traits>
+    void
+    __pad<_CharT, _Traits>::_S_pad(ios_base& __io, _CharT __fill,
+       _CharT* __news, const _CharT* __olds,
+       streamsize __newlen, streamsize __oldlen)
+    {
+      const size_t __plen = static_cast<size_t>(__newlen - __oldlen);
+      const ios_base::fmtflags __adjust = __io.flags() & ios_base::adjustfield;
+
+
+      if (__adjust == ios_base::left)
+ {
+   _Traits::copy(__news, __olds, __oldlen);
+   _Traits::assign(__news + __oldlen, __plen, __fill);
+   return;
+ }
+
+      size_t __mod = 0;
+      if (__adjust == ios_base::internal)
+ {
+
+
+
+          const locale& __loc = __io._M_getloc();
+   const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
+
+   if (__ctype.widen('-') == __olds[0]
+       || __ctype.widen('+') == __olds[0])
+     {
+       __news[0] = __olds[0];
+       __mod = 1;
+       ++__news;
+     }
+   else if (__ctype.widen('0') == __olds[0]
+     && __oldlen > 1
+     && (__ctype.widen('x') == __olds[1]
+         || __ctype.widen('X') == __olds[1]))
+     {
+       __news[0] = __olds[0];
+       __news[1] = __olds[1];
+       __mod = 2;
+       __news += 2;
+     }
+
+ }
+      _Traits::assign(__news, __plen, __fill);
+      _Traits::copy(__news + __plen, __olds + __mod, __oldlen - __mod);
+    }
+
+  template<typename _CharT>
+    _CharT*
+    __add_grouping(_CharT* __s, _CharT __sep,
+     const char* __gbeg, size_t __gsize,
+     const _CharT* __first, const _CharT* __last)
+    {
+      size_t __idx = 0;
+      size_t __ctr = 0;
+
+      while (__last - __first > __gbeg[__idx]
+      && static_cast<signed char>(__gbeg[__idx]) > 0
+      && __gbeg[__idx] != __gnu_cxx::__numeric_traits<char>::__max)
+ {
+   __last -= __gbeg[__idx];
+   __idx < __gsize - 1 ? ++__idx : ++__ctr;
+ }
+
+      while (__first != __last)
+ *__s++ = *__first++;
+
+      while (__ctr--)
+ {
+   *__s++ = __sep;
+   for (char __i = __gbeg[__idx]; __i > 0; --__i)
+     *__s++ = *__first++;
+ }
+
+      while (__idx--)
+ {
+   *__s++ = __sep;
+   for (char __i = __gbeg[__idx]; __i > 0; --__i)
+     *__s++ = *__first++;
+ }
+
+      return __s;
+    }
+
+
+
+
+  extern template class __cxx11:: numpunct<char>;
+  extern template class __cxx11:: numpunct_byname<char>;
+  extern template class num_get<char>;
+  extern template class num_put<char>;
+  extern template class ctype_byname<char>;
+
+  extern template
+    const ctype<char>&
+    use_facet<ctype<char> >(const locale&);
+
+  extern template
+    const numpunct<char>&
+    use_facet<numpunct<char> >(const locale&);
+
+  extern template
+    const num_put<char>&
+    use_facet<num_put<char> >(const locale&);
+
+  extern template
+    const num_get<char>&
+    use_facet<num_get<char> >(const locale&);
+
+  extern template
+    bool
+    has_facet<ctype<char> >(const locale&);
+
+  extern template
+    bool
+    has_facet<numpunct<char> >(const locale&);
+
+  extern template
+    bool
+    has_facet<num_put<char> >(const locale&);
+
+  extern template
+    bool
+    has_facet<num_get<char> >(const locale&);
+
+
+  extern template class __cxx11:: numpunct<wchar_t>;
+  extern template class __cxx11:: numpunct_byname<wchar_t>;
+  extern template class num_get<wchar_t>;
+  extern template class num_put<wchar_t>;
+  extern template class ctype_byname<wchar_t>;
+
+  extern template
+    const ctype<wchar_t>&
+    use_facet<ctype<wchar_t> >(const locale&);
+
+  extern template
+    const numpunct<wchar_t>&
+    use_facet<numpunct<wchar_t> >(const locale&);
+
+  extern template
+    const num_put<wchar_t>&
+    use_facet<num_put<wchar_t> >(const locale&);
+
+  extern template
+    const num_get<wchar_t>&
+    use_facet<num_get<wchar_t> >(const locale&);
+
+ extern template
+    bool
+    has_facet<ctype<wchar_t> >(const locale&);
+
+  extern template
+    bool
+    has_facet<numpunct<wchar_t> >(const locale&);
+
+  extern template
+    bool
+    has_facet<num_put<wchar_t> >(const locale&);
+
+  extern template
+    bool
+    has_facet<num_get<wchar_t> >(const locale&);
+
+
+
+
+}
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  template<typename _Facet>
+    inline const _Facet&
+    __check_facet(const _Facet* __f)
+    {
+      if (!__f)
+ __throw_bad_cast();
+      return *__f;
+    }
+  template<typename _CharT, typename _Traits>
+    class basic_ios : public ios_base
+    {
+    public:
+
+
+
+
+
+
+      typedef _CharT char_type;
+      typedef typename _Traits::int_type int_type;
+      typedef typename _Traits::pos_type pos_type;
+      typedef typename _Traits::off_type off_type;
+      typedef _Traits traits_type;
+
+
+
+
+
+
+      typedef ctype<_CharT> __ctype_type;
+      typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> >
+           __num_put_type;
+      typedef num_get<_CharT, istreambuf_iterator<_CharT, _Traits> >
+           __num_get_type;
+
+
+
+    protected:
+      basic_ostream<_CharT, _Traits>* _M_tie;
+      mutable char_type _M_fill;
+      mutable bool _M_fill_init;
+      basic_streambuf<_CharT, _Traits>* _M_streambuf;
+
+
+      const __ctype_type* _M_ctype;
+
+      const __num_put_type* _M_num_put;
+
+      const __num_get_type* _M_num_get;
+
+    public:
+      explicit operator bool() const
+      { return !this->fail(); }
+
+
+
+
+
+      bool
+      operator!() const
+      { return this->fail(); }
+      iostate
+      rdstate() const
+      { return _M_streambuf_state; }
+      void
+      clear(iostate __state = goodbit);
+
+
+
+
+
+
+
+      void
+      setstate(iostate __state)
+      { this->clear(this->rdstate() | __state); }
+
+
+
+
+      void
+      _M_setstate(iostate __state)
+      {
+
+
+ _M_streambuf_state |= __state;
+ if (this->exceptions() & __state)
+   throw;
+      }
+
+
+
+
+
+
+
+      bool
+      good() const
+      { return this->rdstate() == 0; }
+
+
+
+
+
+
+
+      bool
+      eof() const
+      { return (this->rdstate() & eofbit) != 0; }
+      bool
+      fail() const
+      { return (this->rdstate() & (badbit | failbit)) != 0; }
+
+
+
+
+
+
+
+      bool
+      bad() const
+      { return (this->rdstate() & badbit) != 0; }
+      iostate
+      exceptions() const
+      { return _M_exception; }
+      void
+      exceptions(iostate __except)
+      {
+        _M_exception = __except;
+        this->clear(_M_streambuf_state);
+      }
+
+
+
+
+
+
+
+      explicit
+      basic_ios(basic_streambuf<_CharT, _Traits>* __sb)
+      : ios_base(), _M_tie(0), _M_fill(), _M_fill_init(false), _M_streambuf(0),
+ _M_ctype(0), _M_num_put(0), _M_num_get(0)
+      { this->init(__sb); }
+
+
+
+
+
+
+
+      virtual
+      ~basic_ios() { }
+      basic_ostream<_CharT, _Traits>*
+      tie() const
+      { return _M_tie; }
+      basic_ostream<_CharT, _Traits>*
+      tie(basic_ostream<_CharT, _Traits>* __tiestr)
+      {
+        basic_ostream<_CharT, _Traits>* __old = _M_tie;
+        _M_tie = __tiestr;
+        return __old;
+      }
+
+
+
+
+
+
+
+      basic_streambuf<_CharT, _Traits>*
+      rdbuf() const
+      { return _M_streambuf; }
+      basic_streambuf<_CharT, _Traits>*
+      rdbuf(basic_streambuf<_CharT, _Traits>* __sb);
+      basic_ios&
+      copyfmt(const basic_ios& __rhs);
+
+
+
+
+
+
+
+      char_type
+      fill() const
+      {
+ if (!_M_fill_init)
+   {
+     _M_fill = this->widen(' ');
+     _M_fill_init = true;
+   }
+ return _M_fill;
+      }
+      char_type
+      fill(char_type __ch)
+      {
+ char_type __old = this->fill();
+ _M_fill = __ch;
+ return __old;
+      }
+      locale
+      imbue(const locale& __loc);
+      char
+      narrow(char_type __c, char __dfault) const
+      { return __check_facet(_M_ctype).narrow(__c, __dfault); }
+      char_type
+      widen(char __c) const
+      { return __check_facet(_M_ctype).widen(__c); }
+
+    protected:
+
+
+
+
+
+
+
+      basic_ios()
+      : ios_base(), _M_tie(0), _M_fill(char_type()), _M_fill_init(false),
+ _M_streambuf(0), _M_ctype(0), _M_num_put(0), _M_num_get(0)
+      { }
+
+
+
+
+
+
+
+      void
+      init(basic_streambuf<_CharT, _Traits>* __sb);
+
+
+      basic_ios(const basic_ios&) = delete;
+      basic_ios& operator=(const basic_ios&) = delete;
+
+      void
+      move(basic_ios& __rhs)
+      {
+ ios_base::_M_move(__rhs);
+ _M_cache_locale(_M_ios_locale);
+ this->tie(__rhs.tie(nullptr));
+ _M_fill = __rhs._M_fill;
+ _M_fill_init = __rhs._M_fill_init;
+ _M_streambuf = nullptr;
+      }
+
+      void
+      move(basic_ios&& __rhs)
+      { this->move(__rhs); }
+
+      void
+      swap(basic_ios& __rhs) noexcept
+      {
+ ios_base::_M_swap(__rhs);
+ _M_cache_locale(_M_ios_locale);
+ __rhs._M_cache_locale(__rhs._M_ios_locale);
+ std::swap(_M_tie, __rhs._M_tie);
+ std::swap(_M_fill, __rhs._M_fill);
+ std::swap(_M_fill_init, __rhs._M_fill_init);
+      }
+
+      void
+      set_rdbuf(basic_streambuf<_CharT, _Traits>* __sb)
+      { _M_streambuf = __sb; }
+
+
+      void
+      _M_cache_locale(const locale& __loc);
+    };
+
+
+}
+
+       
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  template<typename _CharT, typename _Traits>
+    void
+    basic_ios<_CharT, _Traits>::clear(iostate __state)
+    {
+      if (this->rdbuf())
+ _M_streambuf_state = __state;
+      else
+   _M_streambuf_state = __state | badbit;
+      if (this->exceptions() & this->rdstate())
+ __throw_ios_failure(("basic_ios::clear"));
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_streambuf<_CharT, _Traits>*
+    basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<_CharT, _Traits>* __sb)
+    {
+      basic_streambuf<_CharT, _Traits>* __old = _M_streambuf;
+      _M_streambuf = __sb;
+      this->clear();
+      return __old;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ios<_CharT, _Traits>&
+    basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs)
+    {
+
+
+      if (this != &__rhs)
+ {
+
+
+
+
+   _Words* __words = (__rhs._M_word_size <= _S_local_word_size) ?
+                      _M_local_word : new _Words[__rhs._M_word_size];
+
+
+   _Callback_list* __cb = __rhs._M_callbacks;
+   if (__cb)
+     __cb->_M_add_reference();
+   _M_call_callbacks(erase_event);
+   if (_M_word != _M_local_word)
+     {
+       delete [] _M_word;
+       _M_word = 0;
+     }
+   _M_dispose_callbacks();
+
+
+   _M_callbacks = __cb;
+   for (int __i = 0; __i < __rhs._M_word_size; ++__i)
+     __words[__i] = __rhs._M_word[__i];
+   _M_word = __words;
+   _M_word_size = __rhs._M_word_size;
+
+   this->flags(__rhs.flags());
+   this->width(__rhs.width());
+   this->precision(__rhs.precision());
+   this->tie(__rhs.tie());
+   this->fill(__rhs.fill());
+   _M_ios_locale = __rhs.getloc();
+   _M_cache_locale(_M_ios_locale);
+
+   _M_call_callbacks(copyfmt_event);
+
+
+   this->exceptions(__rhs.exceptions());
+ }
+      return *this;
+    }
+
+
+  template<typename _CharT, typename _Traits>
+    locale
+    basic_ios<_CharT, _Traits>::imbue(const locale& __loc)
+    {
+      locale __old(this->getloc());
+      ios_base::imbue(__loc);
+      _M_cache_locale(__loc);
+      if (this->rdbuf() != 0)
+ this->rdbuf()->pubimbue(__loc);
+      return __old;
+    }
+
+  template<typename _CharT, typename _Traits>
+    void
+    basic_ios<_CharT, _Traits>::init(basic_streambuf<_CharT, _Traits>* __sb)
+    {
+
+      ios_base::_M_init();
+
+
+      _M_cache_locale(_M_ios_locale);
+      _M_fill = _CharT();
+      _M_fill_init = false;
+
+      _M_tie = 0;
+      _M_exception = goodbit;
+      _M_streambuf = __sb;
+      _M_streambuf_state = __sb ? goodbit : badbit;
+    }
+
+  template<typename _CharT, typename _Traits>
+    void
+    basic_ios<_CharT, _Traits>::_M_cache_locale(const locale& __loc)
+    {
+      if (__builtin_expect(has_facet<__ctype_type>(__loc), true))
+ _M_ctype = std::__addressof(use_facet<__ctype_type>(__loc));
+      else
+ _M_ctype = 0;
+
+      if (__builtin_expect(has_facet<__num_put_type>(__loc), true))
+ _M_num_put = std::__addressof(use_facet<__num_put_type>(__loc));
+      else
+ _M_num_put = 0;
+
+      if (__builtin_expect(has_facet<__num_get_type>(__loc), true))
+ _M_num_get = std::__addressof(use_facet<__num_get_type>(__loc));
+      else
+ _M_num_get = 0;
+    }
+
+
+
+
+  extern template class basic_ios<char>;
+
+
+  extern template class basic_ios<wchar_t>;
+
+
+
+
+}
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _CharT, typename _Traits>
+    class basic_ostream : virtual public basic_ios<_CharT, _Traits>
+    {
+    public:
+
+      typedef _CharT char_type;
+      typedef typename _Traits::int_type int_type;
+      typedef typename _Traits::pos_type pos_type;
+      typedef typename _Traits::off_type off_type;
+      typedef _Traits traits_type;
+
+
+      typedef basic_streambuf<_CharT, _Traits> __streambuf_type;
+      typedef basic_ios<_CharT, _Traits> __ios_type;
+      typedef basic_ostream<_CharT, _Traits> __ostream_type;
+      typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> >
+             __num_put_type;
+      typedef ctype<_CharT> __ctype_type;
+      explicit
+      basic_ostream(__streambuf_type* __sb)
+      { this->init(__sb); }
+
+
+
+
+
+
+      virtual
+      ~basic_ostream() { }
+
+
+      class sentry;
+      friend class sentry;
+      __ostream_type&
+      operator<<(__ostream_type& (*__pf)(__ostream_type&))
+      {
+
+
+
+ return __pf(*this);
+      }
+
+      __ostream_type&
+      operator<<(__ios_type& (*__pf)(__ios_type&))
+      {
+
+
+
+ __pf(*this);
+ return *this;
+      }
+
+      __ostream_type&
+      operator<<(ios_base& (*__pf) (ios_base&))
+      {
+
+
+
+ __pf(*this);
+ return *this;
+      }
+      __ostream_type&
+      operator<<(long __n)
+      { return _M_insert(__n); }
+
+      __ostream_type&
+      operator<<(unsigned long __n)
+      { return _M_insert(__n); }
+
+      __ostream_type&
+      operator<<(bool __n)
+      { return _M_insert(__n); }
+
+      __ostream_type&
+      operator<<(short __n);
+
+      __ostream_type&
+      operator<<(unsigned short __n)
+      {
+
+
+ return _M_insert(static_cast<unsigned long>(__n));
+      }
+
+      __ostream_type&
+      operator<<(int __n);
+
+      __ostream_type&
+      operator<<(unsigned int __n)
+      {
+
+
+ return _M_insert(static_cast<unsigned long>(__n));
+      }
+
+
+      __ostream_type&
+      operator<<(long long __n)
+      { return _M_insert(__n); }
+
+      __ostream_type&
+      operator<<(unsigned long long __n)
+      { return _M_insert(__n); }
+      __ostream_type&
+      operator<<(double __f)
+      { return _M_insert(__f); }
+
+      __ostream_type&
+      operator<<(float __f)
+      {
+
+
+ return _M_insert(static_cast<double>(__f));
+      }
+
+      __ostream_type&
+      operator<<(long double __f)
+      { return _M_insert(__f); }
+      __ostream_type&
+      operator<<(const void* __p)
+      { return _M_insert(__p); }
+      __ostream_type&
+      operator<<(__streambuf_type* __sb);
+      __ostream_type&
+      put(char_type __c);
+
+
+
+
+
+
+      void
+      _M_write(const char_type* __s, streamsize __n)
+      {
+ const streamsize __put = this->rdbuf()->sputn(__s, __n);
+ if (__put != __n)
+   this->setstate(ios_base::badbit);
+      }
+      __ostream_type&
+      write(const char_type* __s, streamsize __n);
+      __ostream_type&
+      flush();
+      pos_type
+      tellp();
+      __ostream_type&
+      seekp(pos_type);
+       __ostream_type&
+      seekp(off_type, ios_base::seekdir);
+
+    protected:
+      basic_ostream()
+      { this->init(0); }
+
+
+
+      basic_ostream(basic_iostream<_CharT, _Traits>&) { }
+
+      basic_ostream(const basic_ostream&) = delete;
+
+      basic_ostream(basic_ostream&& __rhs)
+      : __ios_type()
+      { __ios_type::move(__rhs); }
+
+
+
+      basic_ostream& operator=(const basic_ostream&) = delete;
+
+      basic_ostream&
+      operator=(basic_ostream&& __rhs)
+      {
+ swap(__rhs);
+ return *this;
+      }
+
+      void
+      swap(basic_ostream& __rhs)
+      { __ios_type::swap(__rhs); }
+
+
+      template<typename _ValueT>
+ __ostream_type&
+ _M_insert(_ValueT __v);
+    };
+  template <typename _CharT, typename _Traits>
+    class basic_ostream<_CharT, _Traits>::sentry
+    {
+
+      bool _M_ok;
+      basic_ostream<_CharT, _Traits>& _M_os;
+
+    public:
+      explicit
+      sentry(basic_ostream<_CharT, _Traits>& __os);
+      ~sentry()
+      {
+
+ if (bool(_M_os.flags() & ios_base::unitbuf) && !uncaught_exception())
+   {
+
+     if (_M_os.rdbuf() && _M_os.rdbuf()->pubsync() == -1)
+       _M_os.setstate(ios_base::badbit);
+   }
+      }
+      explicit
+
+      operator bool() const
+      { return _M_ok; }
+    };
+  template<typename _CharT, typename _Traits>
+    inline basic_ostream<_CharT, _Traits>&
+    operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
+    { return __ostream_insert(__out, &__c, 1); }
+
+  template<typename _CharT, typename _Traits>
+    inline basic_ostream<_CharT, _Traits>&
+    operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
+    { return (__out << __out.widen(__c)); }
+
+
+  template <class _Traits>
+    inline basic_ostream<char, _Traits>&
+    operator<<(basic_ostream<char, _Traits>& __out, char __c)
+    { return __ostream_insert(__out, &__c, 1); }
+
+
+  template<class _Traits>
+    inline basic_ostream<char, _Traits>&
+    operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
+    { return (__out << static_cast<char>(__c)); }
+
+  template<class _Traits>
+    inline basic_ostream<char, _Traits>&
+    operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
+    { return (__out << static_cast<char>(__c)); }
+  template<typename _CharT, typename _Traits>
+    inline basic_ostream<_CharT, _Traits>&
+    operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
+    {
+      if (!__s)
+ __out.setstate(ios_base::badbit);
+      else
+ __ostream_insert(__out, __s,
+    static_cast<streamsize>(_Traits::length(__s)));
+      return __out;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits> &
+    operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s);
+
+
+  template<class _Traits>
+    inline basic_ostream<char, _Traits>&
+    operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
+    {
+      if (!__s)
+ __out.setstate(ios_base::badbit);
+      else
+ __ostream_insert(__out, __s,
+    static_cast<streamsize>(_Traits::length(__s)));
+      return __out;
+    }
+
+
+  template<class _Traits>
+    inline basic_ostream<char, _Traits>&
+    operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
+    { return (__out << reinterpret_cast<const char*>(__s)); }
+
+  template<class _Traits>
+    inline basic_ostream<char, _Traits> &
+    operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
+    { return (__out << reinterpret_cast<const char*>(__s)); }
+  template<typename _CharT, typename _Traits>
+    inline basic_ostream<_CharT, _Traits>&
+    endl(basic_ostream<_CharT, _Traits>& __os)
+    { return flush(__os.put(__os.widen('\n'))); }
+  template<typename _CharT, typename _Traits>
+    inline basic_ostream<_CharT, _Traits>&
+    ends(basic_ostream<_CharT, _Traits>& __os)
+    { return __os.put(_CharT()); }
+
+
+
+
+
+
+  template<typename _CharT, typename _Traits>
+    inline basic_ostream<_CharT, _Traits>&
+    flush(basic_ostream<_CharT, _Traits>& __os)
+    { return __os.flush(); }
+
+
+  template<typename _Ch, typename _Up>
+    basic_ostream<_Ch, _Up>&
+    __is_convertible_to_basic_ostream_test(basic_ostream<_Ch, _Up>*);
+
+  template<typename _Tp, typename = void>
+    struct __is_convertible_to_basic_ostream_impl
+    {
+      using __ostream_type = void;
+    };
+
+  template<typename _Tp>
+    using __do_is_convertible_to_basic_ostream_impl =
+    decltype(__is_convertible_to_basic_ostream_test
+      (declval<typename remove_reference<_Tp>::type*>()));
+
+  template<typename _Tp>
+    struct __is_convertible_to_basic_ostream_impl
+    <_Tp,
+     __void_t<__do_is_convertible_to_basic_ostream_impl<_Tp>>>
+    {
+      using __ostream_type =
+ __do_is_convertible_to_basic_ostream_impl<_Tp>;
+    };
+
+  template<typename _Tp>
+    struct __is_convertible_to_basic_ostream
+    : __is_convertible_to_basic_ostream_impl<_Tp>
+    {
+    public:
+      using type = __not_<is_void<
+        typename __is_convertible_to_basic_ostream_impl<_Tp>::__ostream_type>>;
+      constexpr static bool value = type::value;
+    };
+
+  template<typename _Ostream, typename _Tp, typename = void>
+    struct __is_insertable : false_type {};
+
+  template<typename _Ostream, typename _Tp>
+    struct __is_insertable<_Ostream, _Tp,
+      __void_t<decltype(declval<_Ostream&>()
+          << declval<const _Tp&>())>>
+        : true_type {};
+
+  template<typename _Ostream>
+    using __rvalue_ostream_type =
+      typename __is_convertible_to_basic_ostream<
+ _Ostream>::__ostream_type;
+  template<typename _Ostream, typename _Tp>
+    inline
+    typename enable_if<__and_<__not_<is_lvalue_reference<_Ostream>>,
+         __is_convertible_to_basic_ostream<_Ostream>,
+         __is_insertable<
+    __rvalue_ostream_type<_Ostream>,
+    const _Tp&>>::value,
+         __rvalue_ostream_type<_Ostream>>::type
+    operator<<(_Ostream&& __os, const _Tp& __x)
+    {
+      __rvalue_ostream_type<_Ostream> __ret_os = __os;
+      __ret_os << __x;
+      return __ret_os;
+    }
+
+
+
+}
+
+       
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>::sentry::
+    sentry(basic_ostream<_CharT, _Traits>& __os)
+    : _M_ok(false), _M_os(__os)
+    {
+
+      if (__os.tie() && __os.good())
+ __os.tie()->flush();
+
+      if (__os.good())
+ _M_ok = true;
+      else
+ __os.setstate(ios_base::failbit);
+    }
+
+  template<typename _CharT, typename _Traits>
+    template<typename _ValueT>
+      basic_ostream<_CharT, _Traits>&
+      basic_ostream<_CharT, _Traits>::
+      _M_insert(_ValueT __v)
+      {
+ sentry __cerb(*this);
+ if (__cerb)
+   {
+     ios_base::iostate __err = ios_base::goodbit;
+     try
+       {
+  const __num_put_type& __np = __check_facet(this->_M_num_put);
+  if (__np.put(*this, *this, this->fill(), __v).failed())
+    __err |= ios_base::badbit;
+       }
+     catch(__cxxabiv1::__forced_unwind&)
+       {
+  this->_M_setstate(ios_base::badbit);
+  throw;
+       }
+     catch(...)
+       { this->_M_setstate(ios_base::badbit); }
+     if (__err)
+       this->setstate(__err);
+   }
+ return *this;
+      }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    basic_ostream<_CharT, _Traits>::
+    operator<<(short __n)
+    {
+
+
+      const ios_base::fmtflags __fmt = this->flags() & ios_base::basefield;
+      if (__fmt == ios_base::oct || __fmt == ios_base::hex)
+ return _M_insert(static_cast<long>(static_cast<unsigned short>(__n)));
+      else
+ return _M_insert(static_cast<long>(__n));
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    basic_ostream<_CharT, _Traits>::
+    operator<<(int __n)
+    {
+
+
+      const ios_base::fmtflags __fmt = this->flags() & ios_base::basefield;
+      if (__fmt == ios_base::oct || __fmt == ios_base::hex)
+ return _M_insert(static_cast<long>(static_cast<unsigned int>(__n)));
+      else
+ return _M_insert(static_cast<long>(__n));
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    basic_ostream<_CharT, _Traits>::
+    operator<<(__streambuf_type* __sbin)
+    {
+      ios_base::iostate __err = ios_base::goodbit;
+      sentry __cerb(*this);
+      if (__cerb && __sbin)
+ {
+   try
+     {
+       if (!__copy_streambufs(__sbin, this->rdbuf()))
+  __err |= ios_base::failbit;
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::failbit); }
+ }
+      else if (!__sbin)
+ __err |= ios_base::badbit;
+      if (__err)
+ this->setstate(__err);
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    basic_ostream<_CharT, _Traits>::
+    put(char_type __c)
+    {
+
+
+
+
+
+
+      sentry __cerb(*this);
+      if (__cerb)
+ {
+   ios_base::iostate __err = ios_base::goodbit;
+   try
+     {
+       const int_type __put = this->rdbuf()->sputc(__c);
+       if (traits_type::eq_int_type(__put, traits_type::eof()))
+  __err |= ios_base::badbit;
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+   if (__err)
+     this->setstate(__err);
+ }
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    basic_ostream<_CharT, _Traits>::
+    write(const _CharT* __s, streamsize __n)
+    {
+
+
+
+
+
+
+
+      sentry __cerb(*this);
+      if (__cerb)
+ {
+   try
+     { _M_write(__s, __n); }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+ }
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    basic_ostream<_CharT, _Traits>::
+    flush()
+    {
+
+
+
+      ios_base::iostate __err = ios_base::goodbit;
+      try
+ {
+   if (this->rdbuf() && this->rdbuf()->pubsync() == -1)
+     __err |= ios_base::badbit;
+ }
+      catch(__cxxabiv1::__forced_unwind&)
+ {
+   this->_M_setstate(ios_base::badbit);
+   throw;
+ }
+      catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+      if (__err)
+ this->setstate(__err);
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    typename basic_ostream<_CharT, _Traits>::pos_type
+    basic_ostream<_CharT, _Traits>::
+    tellp()
+    {
+      pos_type __ret = pos_type(-1);
+      try
+ {
+   if (!this->fail())
+     __ret = this->rdbuf()->pubseekoff(0, ios_base::cur, ios_base::out);
+ }
+      catch(__cxxabiv1::__forced_unwind&)
+ {
+   this->_M_setstate(ios_base::badbit);
+   throw;
+ }
+      catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+      return __ret;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    basic_ostream<_CharT, _Traits>::
+    seekp(pos_type __pos)
+    {
+      ios_base::iostate __err = ios_base::goodbit;
+      try
+ {
+   if (!this->fail())
+     {
+
+
+       const pos_type __p = this->rdbuf()->pubseekpos(__pos,
+            ios_base::out);
+
+
+       if (__p == pos_type(off_type(-1)))
+  __err |= ios_base::failbit;
+     }
+ }
+      catch(__cxxabiv1::__forced_unwind&)
+ {
+   this->_M_setstate(ios_base::badbit);
+   throw;
+ }
+      catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+      if (__err)
+ this->setstate(__err);
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    basic_ostream<_CharT, _Traits>::
+    seekp(off_type __off, ios_base::seekdir __dir)
+    {
+      ios_base::iostate __err = ios_base::goodbit;
+      try
+ {
+   if (!this->fail())
+     {
+
+
+       const pos_type __p = this->rdbuf()->pubseekoff(__off, __dir,
+            ios_base::out);
+
+
+       if (__p == pos_type(off_type(-1)))
+  __err |= ios_base::failbit;
+     }
+ }
+      catch(__cxxabiv1::__forced_unwind&)
+ {
+   this->_M_setstate(ios_base::badbit);
+   throw;
+ }
+      catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+      if (__err)
+ this->setstate(__err);
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
+    {
+      if (!__s)
+ __out.setstate(ios_base::badbit);
+      else
+ {
+
+
+   const size_t __clen = char_traits<char>::length(__s);
+   try
+     {
+       struct __ptr_guard
+       {
+  _CharT *__p;
+  __ptr_guard (_CharT *__ip): __p(__ip) { }
+  ~__ptr_guard() { delete[] __p; }
+  _CharT* __get() { return __p; }
+       } __pg (new _CharT[__clen]);
+
+       _CharT *__ws = __pg.__get();
+       for (size_t __i = 0; __i < __clen; ++__i)
+  __ws[__i] = __out.widen(__s[__i]);
+       __ostream_insert(__out, __ws, __clen);
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       __out._M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { __out._M_setstate(ios_base::badbit); }
+ }
+      return __out;
+    }
+
+
+
+
+  extern template class basic_ostream<char>;
+  extern template ostream& endl(ostream&);
+  extern template ostream& ends(ostream&);
+  extern template ostream& flush(ostream&);
+  extern template ostream& operator<<(ostream&, char);
+  extern template ostream& operator<<(ostream&, unsigned char);
+  extern template ostream& operator<<(ostream&, signed char);
+  extern template ostream& operator<<(ostream&, const char*);
+  extern template ostream& operator<<(ostream&, const unsigned char*);
+  extern template ostream& operator<<(ostream&, const signed char*);
+
+  extern template ostream& ostream::_M_insert(long);
+  extern template ostream& ostream::_M_insert(unsigned long);
+  extern template ostream& ostream::_M_insert(bool);
+
+  extern template ostream& ostream::_M_insert(long long);
+  extern template ostream& ostream::_M_insert(unsigned long long);
+
+  extern template ostream& ostream::_M_insert(double);
+  extern template ostream& ostream::_M_insert(long double);
+  extern template ostream& ostream::_M_insert(const void*);
+
+
+  extern template class basic_ostream<wchar_t>;
+  extern template wostream& endl(wostream&);
+  extern template wostream& ends(wostream&);
+  extern template wostream& flush(wostream&);
+  extern template wostream& operator<<(wostream&, wchar_t);
+  extern template wostream& operator<<(wostream&, char);
+  extern template wostream& operator<<(wostream&, const wchar_t*);
+  extern template wostream& operator<<(wostream&, const char*);
+
+  extern template wostream& wostream::_M_insert(long);
+  extern template wostream& wostream::_M_insert(unsigned long);
+  extern template wostream& wostream::_M_insert(bool);
+
+  extern template wostream& wostream::_M_insert(long long);
+  extern template wostream& wostream::_M_insert(unsigned long long);
+
+  extern template wostream& wostream::_M_insert(double);
+  extern template wostream& wostream::_M_insert(long double);
+  extern template wostream& wostream::_M_insert(const void*);
+
+
+
+
+}
+       
+
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _CharT, typename _Traits>
+    class basic_istream : virtual public basic_ios<_CharT, _Traits>
+    {
+    public:
+
+      typedef _CharT char_type;
+      typedef typename _Traits::int_type int_type;
+      typedef typename _Traits::pos_type pos_type;
+      typedef typename _Traits::off_type off_type;
+      typedef _Traits traits_type;
+
+
+      typedef basic_streambuf<_CharT, _Traits> __streambuf_type;
+      typedef basic_ios<_CharT, _Traits> __ios_type;
+      typedef basic_istream<_CharT, _Traits> __istream_type;
+      typedef num_get<_CharT, istreambuf_iterator<_CharT, _Traits> >
+        __num_get_type;
+      typedef ctype<_CharT> __ctype_type;
+
+    protected:
+
+
+
+
+
+      streamsize _M_gcount;
+
+    public:
+
+
+
+
+
+
+
+      explicit
+      basic_istream(__streambuf_type* __sb)
+      : _M_gcount(streamsize(0))
+      { this->init(__sb); }
+
+
+
+
+
+
+      virtual
+      ~basic_istream()
+      { _M_gcount = streamsize(0); }
+
+
+      class sentry;
+      friend class sentry;
+      __istream_type&
+      operator>>(__istream_type& (*__pf)(__istream_type&))
+      { return __pf(*this); }
+
+      __istream_type&
+      operator>>(__ios_type& (*__pf)(__ios_type&))
+      {
+ __pf(*this);
+ return *this;
+      }
+
+      __istream_type&
+      operator>>(ios_base& (*__pf)(ios_base&))
+      {
+ __pf(*this);
+ return *this;
+      }
+      __istream_type&
+      operator>>(bool& __n)
+      { return _M_extract(__n); }
+
+      __istream_type&
+      operator>>(short& __n);
+
+      __istream_type&
+      operator>>(unsigned short& __n)
+      { return _M_extract(__n); }
+
+      __istream_type&
+      operator>>(int& __n);
+
+      __istream_type&
+      operator>>(unsigned int& __n)
+      { return _M_extract(__n); }
+
+      __istream_type&
+      operator>>(long& __n)
+      { return _M_extract(__n); }
+
+      __istream_type&
+      operator>>(unsigned long& __n)
+      { return _M_extract(__n); }
+
+
+      __istream_type&
+      operator>>(long long& __n)
+      { return _M_extract(__n); }
+
+      __istream_type&
+      operator>>(unsigned long long& __n)
+      { return _M_extract(__n); }
+      __istream_type&
+      operator>>(float& __f)
+      { return _M_extract(__f); }
+
+      __istream_type&
+      operator>>(double& __f)
+      { return _M_extract(__f); }
+
+      __istream_type&
+      operator>>(long double& __f)
+      { return _M_extract(__f); }
+      __istream_type&
+      operator>>(void*& __p)
+      { return _M_extract(__p); }
+      __istream_type&
+      operator>>(__streambuf_type* __sb);
+      streamsize
+      gcount() const
+      { return _M_gcount; }
+      int_type
+      get();
+      __istream_type&
+      get(char_type& __c);
+      __istream_type&
+      get(char_type* __s, streamsize __n, char_type __delim);
+      __istream_type&
+      get(char_type* __s, streamsize __n)
+      { return this->get(__s, __n, this->widen('\n')); }
+      __istream_type&
+      get(__streambuf_type& __sb, char_type __delim);
+      __istream_type&
+      get(__streambuf_type& __sb)
+      { return this->get(__sb, this->widen('\n')); }
+      __istream_type&
+      getline(char_type* __s, streamsize __n, char_type __delim);
+      __istream_type&
+      getline(char_type* __s, streamsize __n)
+      { return this->getline(__s, __n, this->widen('\n')); }
+      __istream_type&
+      ignore(streamsize __n, int_type __delim);
+
+      __istream_type&
+      ignore(streamsize __n);
+
+      __istream_type&
+      ignore();
+      int_type
+      peek();
+      __istream_type&
+      read(char_type* __s, streamsize __n);
+      streamsize
+      readsome(char_type* __s, streamsize __n);
+      __istream_type&
+      putback(char_type __c);
+      __istream_type&
+      unget();
+      int
+      sync();
+      pos_type
+      tellg();
+      __istream_type&
+      seekg(pos_type);
+      __istream_type&
+      seekg(off_type, ios_base::seekdir);
+
+
+    protected:
+      basic_istream()
+      : _M_gcount(streamsize(0))
+      { this->init(0); }
+
+
+      basic_istream(const basic_istream&) = delete;
+
+      basic_istream(basic_istream&& __rhs)
+      : __ios_type(), _M_gcount(__rhs._M_gcount)
+      {
+ __ios_type::move(__rhs);
+ __rhs._M_gcount = 0;
+      }
+
+
+
+      basic_istream& operator=(const basic_istream&) = delete;
+
+      basic_istream&
+      operator=(basic_istream&& __rhs)
+      {
+ swap(__rhs);
+ return *this;
+      }
+
+      void
+      swap(basic_istream& __rhs)
+      {
+ __ios_type::swap(__rhs);
+ std::swap(_M_gcount, __rhs._M_gcount);
+      }
+
+
+      template<typename _ValueT>
+ __istream_type&
+ _M_extract(_ValueT& __v);
+    };
+
+
+  template<>
+    basic_istream<char>&
+    basic_istream<char>::
+    getline(char_type* __s, streamsize __n, char_type __delim);
+
+  template<>
+    basic_istream<char>&
+    basic_istream<char>::
+    ignore(streamsize __n);
+
+  template<>
+    basic_istream<char>&
+    basic_istream<char>::
+    ignore(streamsize __n, int_type __delim);
+
+
+  template<>
+    basic_istream<wchar_t>&
+    basic_istream<wchar_t>::
+    getline(char_type* __s, streamsize __n, char_type __delim);
+
+  template<>
+    basic_istream<wchar_t>&
+    basic_istream<wchar_t>::
+    ignore(streamsize __n);
+
+  template<>
+    basic_istream<wchar_t>&
+    basic_istream<wchar_t>::
+    ignore(streamsize __n, int_type __delim);
+  template<typename _CharT, typename _Traits>
+    class basic_istream<_CharT, _Traits>::sentry
+    {
+
+      bool _M_ok;
+
+    public:
+
+      typedef _Traits traits_type;
+      typedef basic_streambuf<_CharT, _Traits> __streambuf_type;
+      typedef basic_istream<_CharT, _Traits> __istream_type;
+      typedef typename __istream_type::__ctype_type __ctype_type;
+      typedef typename _Traits::int_type __int_type;
+      explicit
+      sentry(basic_istream<_CharT, _Traits>& __is, bool __noskipws = false);
+      explicit
+
+      operator bool() const
+      { return _M_ok; }
+    };
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c);
+
+  template<class _Traits>
+    inline basic_istream<char, _Traits>&
+    operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
+    { return (__in >> reinterpret_cast<char&>(__c)); }
+
+  template<class _Traits>
+    inline basic_istream<char, _Traits>&
+    operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
+    { return (__in >> reinterpret_cast<char&>(__c)); }
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s);
+
+
+  template<>
+    basic_istream<char>&
+    operator>>(basic_istream<char>& __in, char* __s);
+
+  template<class _Traits>
+    inline basic_istream<char, _Traits>&
+    operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
+    { return (__in >> reinterpret_cast<char*>(__s)); }
+
+  template<class _Traits>
+    inline basic_istream<char, _Traits>&
+    operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
+    { return (__in >> reinterpret_cast<char*>(__s)); }
+  template<typename _CharT, typename _Traits>
+    class basic_iostream
+    : public basic_istream<_CharT, _Traits>,
+      public basic_ostream<_CharT, _Traits>
+    {
+    public:
+
+
+
+      typedef _CharT char_type;
+      typedef typename _Traits::int_type int_type;
+      typedef typename _Traits::pos_type pos_type;
+      typedef typename _Traits::off_type off_type;
+      typedef _Traits traits_type;
+
+
+      typedef basic_istream<_CharT, _Traits> __istream_type;
+      typedef basic_ostream<_CharT, _Traits> __ostream_type;
+
+
+
+
+
+
+
+      explicit
+      basic_iostream(basic_streambuf<_CharT, _Traits>* __sb)
+      : __istream_type(__sb), __ostream_type(__sb) { }
+
+
+
+
+      virtual
+      ~basic_iostream() { }
+
+    protected:
+      basic_iostream()
+      : __istream_type(), __ostream_type() { }
+
+
+      basic_iostream(const basic_iostream&) = delete;
+
+      basic_iostream(basic_iostream&& __rhs)
+      : __istream_type(std::move(__rhs)), __ostream_type(*this)
+      { }
+
+
+
+      basic_iostream& operator=(const basic_iostream&) = delete;
+
+      basic_iostream&
+      operator=(basic_iostream&& __rhs)
+      {
+ swap(__rhs);
+ return *this;
+      }
+
+      void
+      swap(basic_iostream& __rhs)
+      { __istream_type::swap(__rhs); }
+
+    };
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    ws(basic_istream<_CharT, _Traits>& __is);
+
+
+  template<typename _Ch, typename _Up>
+    basic_istream<_Ch, _Up>&
+    __is_convertible_to_basic_istream_test(basic_istream<_Ch, _Up>*);
+
+  template<typename _Tp, typename = void>
+    struct __is_convertible_to_basic_istream_impl
+    {
+      using __istream_type = void;
+    };
+
+  template<typename _Tp>
+    using __do_is_convertible_to_basic_istream_impl =
+    decltype(__is_convertible_to_basic_istream_test
+      (declval<typename remove_reference<_Tp>::type*>()));
+
+  template<typename _Tp>
+    struct __is_convertible_to_basic_istream_impl
+    <_Tp,
+     __void_t<__do_is_convertible_to_basic_istream_impl<_Tp>>>
+    {
+      using __istream_type =
+ __do_is_convertible_to_basic_istream_impl<_Tp>;
+    };
+
+  template<typename _Tp>
+    struct __is_convertible_to_basic_istream
+    : __is_convertible_to_basic_istream_impl<_Tp>
+    {
+    public:
+      using type = __not_<is_void<
+        typename __is_convertible_to_basic_istream_impl<_Tp>::__istream_type>>;
+      constexpr static bool value = type::value;
+    };
+
+  template<typename _Istream, typename _Tp, typename = void>
+    struct __is_extractable : false_type {};
+
+  template<typename _Istream, typename _Tp>
+    struct __is_extractable<_Istream, _Tp,
+       __void_t<decltype(declval<_Istream&>()
+           >> declval<_Tp>())>>
+    : true_type {};
+
+  template<typename _Istream>
+    using __rvalue_istream_type =
+      typename __is_convertible_to_basic_istream<
+ _Istream>::__istream_type;
+  template<typename _Istream, typename _Tp>
+    inline
+    typename enable_if<__and_<__not_<is_lvalue_reference<_Istream>>,
+         __is_convertible_to_basic_istream<_Istream>,
+         __is_extractable<
+    __rvalue_istream_type<_Istream>,
+    _Tp&&>>::value,
+         __rvalue_istream_type<_Istream>>::type
+    operator>>(_Istream&& __is, _Tp&& __x)
+    {
+      __rvalue_istream_type<_Istream> __ret_is = __is;
+      __ret_is >> std::forward<_Tp>(__x);
+      return __ret_is;
+    }
+
+
+
+}
+
+       
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>::sentry::
+    sentry(basic_istream<_CharT, _Traits>& __in, bool __noskip) : _M_ok(false)
+    {
+      ios_base::iostate __err = ios_base::goodbit;
+      if (__in.good())
+ try
+   {
+     if (__in.tie())
+       __in.tie()->flush();
+     if (!__noskip && bool(__in.flags() & ios_base::skipws))
+       {
+  const __int_type __eof = traits_type::eof();
+  __streambuf_type* __sb = __in.rdbuf();
+  __int_type __c = __sb->sgetc();
+
+  const __ctype_type& __ct = __check_facet(__in._M_ctype);
+  while (!traits_type::eq_int_type(__c, __eof)
+         && __ct.is(ctype_base::space,
+      traits_type::to_char_type(__c)))
+    __c = __sb->snextc();
+
+
+
+
+  if (traits_type::eq_int_type(__c, __eof))
+    __err |= ios_base::eofbit;
+       }
+   }
+ catch(__cxxabiv1::__forced_unwind&)
+   {
+     __in._M_setstate(ios_base::badbit);
+     throw;
+   }
+ catch(...)
+   { __in._M_setstate(ios_base::badbit); }
+
+      if (__in.good() && __err == ios_base::goodbit)
+ _M_ok = true;
+      else
+ {
+   __err |= ios_base::failbit;
+   __in.setstate(__err);
+ }
+    }
+
+  template<typename _CharT, typename _Traits>
+    template<typename _ValueT>
+      basic_istream<_CharT, _Traits>&
+      basic_istream<_CharT, _Traits>::
+      _M_extract(_ValueT& __v)
+      {
+ sentry __cerb(*this, false);
+ if (__cerb)
+   {
+     ios_base::iostate __err = ios_base::goodbit;
+     try
+       {
+  const __num_get_type& __ng = __check_facet(this->_M_num_get);
+  __ng.get(*this, 0, *this, __err, __v);
+       }
+     catch(__cxxabiv1::__forced_unwind&)
+       {
+  this->_M_setstate(ios_base::badbit);
+  throw;
+       }
+     catch(...)
+       { this->_M_setstate(ios_base::badbit); }
+     if (__err)
+       this->setstate(__err);
+   }
+ return *this;
+      }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    operator>>(short& __n)
+    {
+
+
+      sentry __cerb(*this, false);
+      if (__cerb)
+ {
+   ios_base::iostate __err = ios_base::goodbit;
+   try
+     {
+       long __l;
+       const __num_get_type& __ng = __check_facet(this->_M_num_get);
+       __ng.get(*this, 0, *this, __err, __l);
+
+
+
+       if (__l < __gnu_cxx::__numeric_traits<short>::__min)
+  {
+    __err |= ios_base::failbit;
+    __n = __gnu_cxx::__numeric_traits<short>::__min;
+  }
+       else if (__l > __gnu_cxx::__numeric_traits<short>::__max)
+  {
+    __err |= ios_base::failbit;
+    __n = __gnu_cxx::__numeric_traits<short>::__max;
+  }
+       else
+  __n = short(__l);
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+   if (__err)
+     this->setstate(__err);
+ }
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    operator>>(int& __n)
+    {
+
+
+      sentry __cerb(*this, false);
+      if (__cerb)
+ {
+   ios_base::iostate __err = ios_base::goodbit;
+   try
+     {
+       long __l;
+       const __num_get_type& __ng = __check_facet(this->_M_num_get);
+       __ng.get(*this, 0, *this, __err, __l);
+
+
+
+       if (__l < __gnu_cxx::__numeric_traits<int>::__min)
+  {
+    __err |= ios_base::failbit;
+    __n = __gnu_cxx::__numeric_traits<int>::__min;
+  }
+       else if (__l > __gnu_cxx::__numeric_traits<int>::__max)
+  {
+    __err |= ios_base::failbit;
+    __n = __gnu_cxx::__numeric_traits<int>::__max;
+  }
+       else
+  __n = int(__l);
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+   if (__err)
+     this->setstate(__err);
+ }
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    operator>>(__streambuf_type* __sbout)
+    {
+      ios_base::iostate __err = ios_base::goodbit;
+      sentry __cerb(*this, false);
+      if (__cerb && __sbout)
+ {
+   try
+     {
+       bool __ineof;
+       if (!__copy_streambufs_eof(this->rdbuf(), __sbout, __ineof))
+  __err |= ios_base::failbit;
+       if (__ineof)
+  __err |= ios_base::eofbit;
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::failbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::failbit); }
+ }
+      else if (!__sbout)
+ __err |= ios_base::failbit;
+      if (__err)
+ this->setstate(__err);
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    typename basic_istream<_CharT, _Traits>::int_type
+    basic_istream<_CharT, _Traits>::
+    get(void)
+    {
+      const int_type __eof = traits_type::eof();
+      int_type __c = __eof;
+      _M_gcount = 0;
+      ios_base::iostate __err = ios_base::goodbit;
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   try
+     {
+       __c = this->rdbuf()->sbumpc();
+
+       if (!traits_type::eq_int_type(__c, __eof))
+  _M_gcount = 1;
+       else
+  __err |= ios_base::eofbit;
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+ }
+      if (!_M_gcount)
+ __err |= ios_base::failbit;
+      if (__err)
+ this->setstate(__err);
+      return __c;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    get(char_type& __c)
+    {
+      _M_gcount = 0;
+      ios_base::iostate __err = ios_base::goodbit;
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   try
+     {
+       const int_type __cb = this->rdbuf()->sbumpc();
+
+       if (!traits_type::eq_int_type(__cb, traits_type::eof()))
+  {
+    _M_gcount = 1;
+    __c = traits_type::to_char_type(__cb);
+  }
+       else
+  __err |= ios_base::eofbit;
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+ }
+      if (!_M_gcount)
+ __err |= ios_base::failbit;
+      if (__err)
+ this->setstate(__err);
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    get(char_type* __s, streamsize __n, char_type __delim)
+    {
+      _M_gcount = 0;
+      ios_base::iostate __err = ios_base::goodbit;
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   try
+     {
+       const int_type __idelim = traits_type::to_int_type(__delim);
+       const int_type __eof = traits_type::eof();
+       __streambuf_type* __sb = this->rdbuf();
+       int_type __c = __sb->sgetc();
+
+       while (_M_gcount + 1 < __n
+       && !traits_type::eq_int_type(__c, __eof)
+       && !traits_type::eq_int_type(__c, __idelim))
+  {
+    *__s++ = traits_type::to_char_type(__c);
+    ++_M_gcount;
+    __c = __sb->snextc();
+  }
+       if (traits_type::eq_int_type(__c, __eof))
+  __err |= ios_base::eofbit;
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+ }
+
+
+      if (__n > 0)
+ *__s = char_type();
+      if (!_M_gcount)
+ __err |= ios_base::failbit;
+      if (__err)
+ this->setstate(__err);
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    get(__streambuf_type& __sb, char_type __delim)
+    {
+      _M_gcount = 0;
+      ios_base::iostate __err = ios_base::goodbit;
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   try
+     {
+       const int_type __idelim = traits_type::to_int_type(__delim);
+       const int_type __eof = traits_type::eof();
+       __streambuf_type* __this_sb = this->rdbuf();
+       int_type __c = __this_sb->sgetc();
+       char_type __c2 = traits_type::to_char_type(__c);
+
+       while (!traits_type::eq_int_type(__c, __eof)
+       && !traits_type::eq_int_type(__c, __idelim)
+       && !traits_type::eq_int_type(__sb.sputc(__c2), __eof))
+  {
+    ++_M_gcount;
+    __c = __this_sb->snextc();
+    __c2 = traits_type::to_char_type(__c);
+  }
+       if (traits_type::eq_int_type(__c, __eof))
+  __err |= ios_base::eofbit;
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+ }
+      if (!_M_gcount)
+ __err |= ios_base::failbit;
+      if (__err)
+ this->setstate(__err);
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    getline(char_type* __s, streamsize __n, char_type __delim)
+    {
+      _M_gcount = 0;
+      ios_base::iostate __err = ios_base::goodbit;
+      sentry __cerb(*this, true);
+      if (__cerb)
+        {
+          try
+            {
+              const int_type __idelim = traits_type::to_int_type(__delim);
+              const int_type __eof = traits_type::eof();
+              __streambuf_type* __sb = this->rdbuf();
+              int_type __c = __sb->sgetc();
+
+              while (_M_gcount + 1 < __n
+                     && !traits_type::eq_int_type(__c, __eof)
+                     && !traits_type::eq_int_type(__c, __idelim))
+                {
+                  *__s++ = traits_type::to_char_type(__c);
+                  __c = __sb->snextc();
+                  ++_M_gcount;
+                }
+              if (traits_type::eq_int_type(__c, __eof))
+                __err |= ios_base::eofbit;
+              else
+                {
+                  if (traits_type::eq_int_type(__c, __idelim))
+                    {
+                      __sb->sbumpc();
+                      ++_M_gcount;
+                    }
+                  else
+                    __err |= ios_base::failbit;
+                }
+            }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+          catch(...)
+            { this->_M_setstate(ios_base::badbit); }
+        }
+
+
+      if (__n > 0)
+ *__s = char_type();
+      if (!_M_gcount)
+        __err |= ios_base::failbit;
+      if (__err)
+        this->setstate(__err);
+      return *this;
+    }
+
+
+
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    ignore(void)
+    {
+      _M_gcount = 0;
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   ios_base::iostate __err = ios_base::goodbit;
+   try
+     {
+       const int_type __eof = traits_type::eof();
+       __streambuf_type* __sb = this->rdbuf();
+
+       if (traits_type::eq_int_type(__sb->sbumpc(), __eof))
+  __err |= ios_base::eofbit;
+       else
+  _M_gcount = 1;
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+   if (__err)
+     this->setstate(__err);
+ }
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    ignore(streamsize __n)
+    {
+      _M_gcount = 0;
+      sentry __cerb(*this, true);
+      if (__cerb && __n > 0)
+        {
+          ios_base::iostate __err = ios_base::goodbit;
+          try
+            {
+              const int_type __eof = traits_type::eof();
+              __streambuf_type* __sb = this->rdbuf();
+              int_type __c = __sb->sgetc();
+       bool __large_ignore = false;
+       while (true)
+  {
+    while (_M_gcount < __n
+    && !traits_type::eq_int_type(__c, __eof))
+      {
+        ++_M_gcount;
+        __c = __sb->snextc();
+      }
+    if (__n == __gnu_cxx::__numeric_traits<streamsize>::__max
+        && !traits_type::eq_int_type(__c, __eof))
+      {
+        _M_gcount =
+   __gnu_cxx::__numeric_traits<streamsize>::__min;
+        __large_ignore = true;
+      }
+    else
+      break;
+  }
+
+       if (__large_ignore)
+  _M_gcount = __gnu_cxx::__numeric_traits<streamsize>::__max;
+
+       if (traits_type::eq_int_type(__c, __eof))
+                __err |= ios_base::eofbit;
+            }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+          catch(...)
+            { this->_M_setstate(ios_base::badbit); }
+          if (__err)
+            this->setstate(__err);
+        }
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    ignore(streamsize __n, int_type __delim)
+    {
+      _M_gcount = 0;
+      sentry __cerb(*this, true);
+      if (__cerb && __n > 0)
+        {
+          ios_base::iostate __err = ios_base::goodbit;
+          try
+            {
+              const int_type __eof = traits_type::eof();
+              __streambuf_type* __sb = this->rdbuf();
+              int_type __c = __sb->sgetc();
+
+
+       bool __large_ignore = false;
+       while (true)
+  {
+    while (_M_gcount < __n
+    && !traits_type::eq_int_type(__c, __eof)
+    && !traits_type::eq_int_type(__c, __delim))
+      {
+        ++_M_gcount;
+        __c = __sb->snextc();
+      }
+    if (__n == __gnu_cxx::__numeric_traits<streamsize>::__max
+        && !traits_type::eq_int_type(__c, __eof)
+        && !traits_type::eq_int_type(__c, __delim))
+      {
+        _M_gcount =
+   __gnu_cxx::__numeric_traits<streamsize>::__min;
+        __large_ignore = true;
+      }
+    else
+      break;
+  }
+
+       if (__large_ignore)
+  _M_gcount = __gnu_cxx::__numeric_traits<streamsize>::__max;
+
+              if (traits_type::eq_int_type(__c, __eof))
+                __err |= ios_base::eofbit;
+       else if (traits_type::eq_int_type(__c, __delim))
+  {
+    if (_M_gcount
+        < __gnu_cxx::__numeric_traits<streamsize>::__max)
+      ++_M_gcount;
+    __sb->sbumpc();
+  }
+            }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+          catch(...)
+            { this->_M_setstate(ios_base::badbit); }
+          if (__err)
+            this->setstate(__err);
+        }
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    typename basic_istream<_CharT, _Traits>::int_type
+    basic_istream<_CharT, _Traits>::
+    peek(void)
+    {
+      int_type __c = traits_type::eof();
+      _M_gcount = 0;
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   ios_base::iostate __err = ios_base::goodbit;
+   try
+     {
+       __c = this->rdbuf()->sgetc();
+       if (traits_type::eq_int_type(__c, traits_type::eof()))
+  __err |= ios_base::eofbit;
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+   if (__err)
+     this->setstate(__err);
+ }
+      return __c;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    read(char_type* __s, streamsize __n)
+    {
+      _M_gcount = 0;
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   ios_base::iostate __err = ios_base::goodbit;
+   try
+     {
+       _M_gcount = this->rdbuf()->sgetn(__s, __n);
+       if (_M_gcount != __n)
+  __err |= (ios_base::eofbit | ios_base::failbit);
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+   if (__err)
+     this->setstate(__err);
+ }
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    streamsize
+    basic_istream<_CharT, _Traits>::
+    readsome(char_type* __s, streamsize __n)
+    {
+      _M_gcount = 0;
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   ios_base::iostate __err = ios_base::goodbit;
+   try
+     {
+
+       const streamsize __num = this->rdbuf()->in_avail();
+       if (__num > 0)
+  _M_gcount = this->rdbuf()->sgetn(__s, std::min(__num, __n));
+       else if (__num == -1)
+  __err |= ios_base::eofbit;
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+   if (__err)
+     this->setstate(__err);
+ }
+      return _M_gcount;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    putback(char_type __c)
+    {
+
+
+      _M_gcount = 0;
+
+      this->clear(this->rdstate() & ~ios_base::eofbit);
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   ios_base::iostate __err = ios_base::goodbit;
+   try
+     {
+       const int_type __eof = traits_type::eof();
+       __streambuf_type* __sb = this->rdbuf();
+       if (!__sb
+    || traits_type::eq_int_type(__sb->sputbackc(__c), __eof))
+  __err |= ios_base::badbit;
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+   if (__err)
+     this->setstate(__err);
+ }
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    unget(void)
+    {
+
+
+      _M_gcount = 0;
+
+      this->clear(this->rdstate() & ~ios_base::eofbit);
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   ios_base::iostate __err = ios_base::goodbit;
+   try
+     {
+       const int_type __eof = traits_type::eof();
+       __streambuf_type* __sb = this->rdbuf();
+       if (!__sb
+    || traits_type::eq_int_type(__sb->sungetc(), __eof))
+  __err |= ios_base::badbit;
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+   if (__err)
+     this->setstate(__err);
+ }
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    int
+    basic_istream<_CharT, _Traits>::
+    sync(void)
+    {
+
+
+      int __ret = -1;
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   ios_base::iostate __err = ios_base::goodbit;
+   try
+     {
+       __streambuf_type* __sb = this->rdbuf();
+       if (__sb)
+  {
+    if (__sb->pubsync() == -1)
+      __err |= ios_base::badbit;
+    else
+      __ret = 0;
+  }
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+   if (__err)
+     this->setstate(__err);
+ }
+      return __ret;
+    }
+
+  template<typename _CharT, typename _Traits>
+    typename basic_istream<_CharT, _Traits>::pos_type
+    basic_istream<_CharT, _Traits>::
+    tellg(void)
+    {
+
+
+      pos_type __ret = pos_type(-1);
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   try
+     {
+       if (!this->fail())
+  __ret = this->rdbuf()->pubseekoff(0, ios_base::cur,
+        ios_base::in);
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+ }
+      return __ret;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    seekg(pos_type __pos)
+    {
+
+
+
+      this->clear(this->rdstate() & ~ios_base::eofbit);
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   ios_base::iostate __err = ios_base::goodbit;
+   try
+     {
+       if (!this->fail())
+  {
+
+    const pos_type __p = this->rdbuf()->pubseekpos(__pos,
+         ios_base::in);
+
+
+    if (__p == pos_type(off_type(-1)))
+      __err |= ios_base::failbit;
+  }
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+   if (__err)
+     this->setstate(__err);
+ }
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    basic_istream<_CharT, _Traits>::
+    seekg(off_type __off, ios_base::seekdir __dir)
+    {
+
+
+
+      this->clear(this->rdstate() & ~ios_base::eofbit);
+      sentry __cerb(*this, true);
+      if (__cerb)
+ {
+   ios_base::iostate __err = ios_base::goodbit;
+   try
+     {
+       if (!this->fail())
+  {
+
+    const pos_type __p = this->rdbuf()->pubseekoff(__off, __dir,
+         ios_base::in);
+
+
+    if (__p == pos_type(off_type(-1)))
+      __err |= ios_base::failbit;
+  }
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       this->_M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { this->_M_setstate(ios_base::badbit); }
+   if (__err)
+     this->setstate(__err);
+ }
+      return *this;
+    }
+
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
+    {
+      typedef basic_istream<_CharT, _Traits> __istream_type;
+      typedef typename __istream_type::int_type __int_type;
+
+      typename __istream_type::sentry __cerb(__in, false);
+      if (__cerb)
+ {
+   ios_base::iostate __err = ios_base::goodbit;
+   try
+     {
+       const __int_type __cb = __in.rdbuf()->sbumpc();
+       if (!_Traits::eq_int_type(__cb, _Traits::eof()))
+  __c = _Traits::to_char_type(__cb);
+       else
+  __err |= (ios_base::eofbit | ios_base::failbit);
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       __in._M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { __in._M_setstate(ios_base::badbit); }
+   if (__err)
+     __in.setstate(__err);
+ }
+      return __in;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
+    {
+      typedef basic_istream<_CharT, _Traits> __istream_type;
+      typedef basic_streambuf<_CharT, _Traits> __streambuf_type;
+      typedef typename _Traits::int_type int_type;
+      typedef _CharT char_type;
+      typedef ctype<_CharT> __ctype_type;
+
+      streamsize __extracted = 0;
+      ios_base::iostate __err = ios_base::goodbit;
+      typename __istream_type::sentry __cerb(__in, false);
+      if (__cerb)
+ {
+   try
+     {
+
+       streamsize __num = __in.width();
+       if (__num <= 0)
+  __num = __gnu_cxx::__numeric_traits<streamsize>::__max;
+
+       const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc());
+
+       const int_type __eof = _Traits::eof();
+       __streambuf_type* __sb = __in.rdbuf();
+       int_type __c = __sb->sgetc();
+
+       while (__extracted < __num - 1
+       && !_Traits::eq_int_type(__c, __eof)
+       && !__ct.is(ctype_base::space,
+     _Traits::to_char_type(__c)))
+  {
+    *__s++ = _Traits::to_char_type(__c);
+    ++__extracted;
+    __c = __sb->snextc();
+  }
+       if (_Traits::eq_int_type(__c, __eof))
+  __err |= ios_base::eofbit;
+
+
+
+       *__s = char_type();
+       __in.width(0);
+     }
+   catch(__cxxabiv1::__forced_unwind&)
+     {
+       __in._M_setstate(ios_base::badbit);
+       throw;
+     }
+   catch(...)
+     { __in._M_setstate(ios_base::badbit); }
+ }
+      if (!__extracted)
+ __err |= ios_base::failbit;
+      if (__err)
+ __in.setstate(__err);
+      return __in;
+    }
+
+
+  template<typename _CharT, typename _Traits>
+    basic_istream<_CharT, _Traits>&
+    ws(basic_istream<_CharT, _Traits>& __in)
+    {
+      typedef basic_istream<_CharT, _Traits> __istream_type;
+      typedef basic_streambuf<_CharT, _Traits> __streambuf_type;
+      typedef typename __istream_type::int_type __int_type;
+      typedef ctype<_CharT> __ctype_type;
+
+      const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc());
+      const __int_type __eof = _Traits::eof();
+      __streambuf_type* __sb = __in.rdbuf();
+      __int_type __c = __sb->sgetc();
+
+      while (!_Traits::eq_int_type(__c, __eof)
+      && __ct.is(ctype_base::space, _Traits::to_char_type(__c)))
+ __c = __sb->snextc();
+
+       if (_Traits::eq_int_type(__c, __eof))
+  __in.setstate(ios_base::eofbit);
+      return __in;
+    }
+
+
+
+
+  extern template class basic_istream<char>;
+  extern template istream& ws(istream&);
+  extern template istream& operator>>(istream&, char&);
+  extern template istream& operator>>(istream&, char*);
+  extern template istream& operator>>(istream&, unsigned char&);
+  extern template istream& operator>>(istream&, signed char&);
+  extern template istream& operator>>(istream&, unsigned char*);
+  extern template istream& operator>>(istream&, signed char*);
+
+  extern template istream& istream::_M_extract(unsigned short&);
+  extern template istream& istream::_M_extract(unsigned int&);
+  extern template istream& istream::_M_extract(long&);
+  extern template istream& istream::_M_extract(unsigned long&);
+  extern template istream& istream::_M_extract(bool&);
+
+  extern template istream& istream::_M_extract(long long&);
+  extern template istream& istream::_M_extract(unsigned long long&);
+
+  extern template istream& istream::_M_extract(float&);
+  extern template istream& istream::_M_extract(double&);
+  extern template istream& istream::_M_extract(long double&);
+  extern template istream& istream::_M_extract(void*&);
+
+  extern template class basic_iostream<char>;
+
+
+  extern template class basic_istream<wchar_t>;
+  extern template wistream& ws(wistream&);
+  extern template wistream& operator>>(wistream&, wchar_t&);
+  extern template wistream& operator>>(wistream&, wchar_t*);
+
+  extern template wistream& wistream::_M_extract(unsigned short&);
+  extern template wistream& wistream::_M_extract(unsigned int&);
+  extern template wistream& wistream::_M_extract(long&);
+  extern template wistream& wistream::_M_extract(unsigned long&);
+  extern template wistream& wistream::_M_extract(bool&);
+
+  extern template wistream& wistream::_M_extract(long long&);
+  extern template wistream& wistream::_M_extract(unsigned long long&);
+
+  extern template wistream& wistream::_M_extract(float&);
+  extern template wistream& wistream::_M_extract(double&);
+  extern template wistream& wistream::_M_extract(long double&);
+  extern template wistream& wistream::_M_extract(void*&);
+
+  extern template class basic_iostream<wchar_t>;
+
+
+
+
+}
+       
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+
+
+  template<typename _Tp, typename _CharT = char,
+           typename _Traits = char_traits<_CharT>, typename _Dist = ptrdiff_t>
+    class istream_iterator
+    : public iterator<input_iterator_tag, _Tp, _Dist, const _Tp*, const _Tp&>
+    {
+    public:
+      typedef _CharT char_type;
+      typedef _Traits traits_type;
+      typedef basic_istream<_CharT, _Traits> istream_type;
+
+    private:
+      istream_type* _M_stream;
+      _Tp _M_value;
+      bool _M_ok;
+
+    public:
+
+      constexpr istream_iterator()
+      : _M_stream(0), _M_value(), _M_ok(false) {}
+
+
+      istream_iterator(istream_type& __s)
+      : _M_stream(std::__addressof(__s))
+      { _M_read(); }
+
+      istream_iterator(const istream_iterator& __obj)
+      : _M_stream(__obj._M_stream), _M_value(__obj._M_value),
+        _M_ok(__obj._M_ok)
+      { }
+
+      const _Tp&
+      operator*() const
+      {
+
+
+                        ;
+ return _M_value;
+      }
+
+      const _Tp*
+      operator->() const { return std::__addressof((operator*())); }
+
+      istream_iterator&
+      operator++()
+      {
+
+
+                        ;
+ _M_read();
+ return *this;
+      }
+
+      istream_iterator
+      operator++(int)
+      {
+
+
+                        ;
+ istream_iterator __tmp = *this;
+ _M_read();
+ return __tmp;
+      }
+
+      bool
+      _M_equal(const istream_iterator& __x) const
+      { return (_M_ok == __x._M_ok) && (!_M_ok || _M_stream == __x._M_stream); }
+
+    private:
+      void
+      _M_read()
+      {
+ _M_ok = (_M_stream && *_M_stream) ? true : false;
+ if (_M_ok)
+   {
+     *_M_stream >> _M_value;
+     _M_ok = *_M_stream ? true : false;
+   }
+      }
+    };
+
+
+  template<typename _Tp, typename _CharT, typename _Traits, typename _Dist>
+    inline bool
+    operator==(const istream_iterator<_Tp, _CharT, _Traits, _Dist>& __x,
+        const istream_iterator<_Tp, _CharT, _Traits, _Dist>& __y)
+    { return __x._M_equal(__y); }
+
+
+  template <class _Tp, class _CharT, class _Traits, class _Dist>
+    inline bool
+    operator!=(const istream_iterator<_Tp, _CharT, _Traits, _Dist>& __x,
+        const istream_iterator<_Tp, _CharT, _Traits, _Dist>& __y)
+    { return !__x._M_equal(__y); }
+  template<typename _Tp, typename _CharT = char,
+           typename _Traits = char_traits<_CharT> >
+    class ostream_iterator
+    : public iterator<output_iterator_tag, void, void, void, void>
+    {
+    public:
+
+
+      typedef _CharT char_type;
+      typedef _Traits traits_type;
+      typedef basic_ostream<_CharT, _Traits> ostream_type;
+
+
+    private:
+      ostream_type* _M_stream;
+      const _CharT* _M_string;
+
+    public:
+
+      ostream_iterator(ostream_type& __s)
+      : _M_stream(std::__addressof(__s)), _M_string(0) {}
+      ostream_iterator(ostream_type& __s, const _CharT* __c)
+      : _M_stream(&__s), _M_string(__c) { }
+
+
+      ostream_iterator(const ostream_iterator& __obj)
+      : _M_stream(__obj._M_stream), _M_string(__obj._M_string) { }
+
+
+
+      ostream_iterator&
+      operator=(const _Tp& __value)
+      {
+
+
+                        ;
+ *_M_stream << __value;
+ if (_M_string) *_M_stream << _M_string;
+ return *this;
+      }
+
+      ostream_iterator&
+      operator*()
+      { return *this; }
+
+      ostream_iterator&
+      operator++()
+      { return *this; }
+
+      ostream_iterator&
+      operator++(int)
+      { return *this; }
+    };
+
+
+
+
+}
+
+
+
+       
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  namespace rel_ops
+  {
+    template <class _Tp>
+      inline bool
+      operator!=(const _Tp& __x, const _Tp& __y)
+      { return !(__x == __y); }
+    template <class _Tp>
+      inline bool
+      operator>(const _Tp& __x, const _Tp& __y)
+      { return __y < __x; }
+    template <class _Tp>
+      inline bool
+      operator<=(const _Tp& __x, const _Tp& __y)
+      { return !(__y < __x); }
+    template <class _Tp>
+      inline bool
+      operator>=(const _Tp& __x, const _Tp& __y)
+      { return !(__x < __y); }
+  }
+
+
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+  template<typename _Tp>
+    struct tuple_size;
+
+
+
+
+
+  template<typename _Tp,
+    typename _Up = typename remove_cv<_Tp>::type,
+    typename = typename enable_if<is_same<_Tp, _Up>::value>::type,
+    size_t = tuple_size<_Tp>::value>
+    using __enable_if_has_tuple_size = _Tp;
+
+  template<typename _Tp>
+    struct tuple_size<const __enable_if_has_tuple_size<_Tp>>
+    : public tuple_size<_Tp> { };
+
+  template<typename _Tp>
+    struct tuple_size<volatile __enable_if_has_tuple_size<_Tp>>
+    : public tuple_size<_Tp> { };
+
+  template<typename _Tp>
+    struct tuple_size<const volatile __enable_if_has_tuple_size<_Tp>>
+    : public tuple_size<_Tp> { };
+
+
+  template<std::size_t __i, typename _Tp>
+    struct tuple_element;
+
+
+  template<std::size_t __i, typename _Tp>
+    using __tuple_element_t = typename tuple_element<__i, _Tp>::type;
+
+  template<std::size_t __i, typename _Tp>
+    struct tuple_element<__i, const _Tp>
+    {
+      typedef typename add_const<__tuple_element_t<__i, _Tp>>::type type;
+    };
+
+  template<std::size_t __i, typename _Tp>
+    struct tuple_element<__i, volatile _Tp>
+    {
+      typedef typename add_volatile<__tuple_element_t<__i, _Tp>>::type type;
+    };
+
+  template<std::size_t __i, typename _Tp>
+    struct tuple_element<__i, const volatile _Tp>
+    {
+      typedef typename add_cv<__tuple_element_t<__i, _Tp>>::type type;
+    };
+
+
+
+
+  template<std::size_t __i, typename _Tp>
+    using tuple_element_t = typename tuple_element<__i, _Tp>::type;
+
+
+
+
+
+  template<typename _T1, typename _T2>
+    struct __is_tuple_like_impl<std::pair<_T1, _T2>> : true_type
+    { };
+
+
+  template<class _Tp1, class _Tp2>
+    struct tuple_size<std::pair<_Tp1, _Tp2>>
+    : public integral_constant<std::size_t, 2> { };
+
+
+  template<class _Tp1, class _Tp2>
+    struct tuple_element<0, std::pair<_Tp1, _Tp2>>
+    { typedef _Tp1 type; };
+
+
+  template<class _Tp1, class _Tp2>
+    struct tuple_element<1, std::pair<_Tp1, _Tp2>>
+    { typedef _Tp2 type; };
+
+  template<std::size_t _Int>
+    struct __pair_get;
+
+  template<>
+    struct __pair_get<0>
+    {
+      template<typename _Tp1, typename _Tp2>
+        static constexpr _Tp1&
+        __get(std::pair<_Tp1, _Tp2>& __pair) noexcept
+        { return __pair.first; }
+
+      template<typename _Tp1, typename _Tp2>
+        static constexpr _Tp1&&
+        __move_get(std::pair<_Tp1, _Tp2>&& __pair) noexcept
+        { return std::forward<_Tp1>(__pair.first); }
+
+      template<typename _Tp1, typename _Tp2>
+        static constexpr const _Tp1&
+        __const_get(const std::pair<_Tp1, _Tp2>& __pair) noexcept
+        { return __pair.first; }
+
+      template<typename _Tp1, typename _Tp2>
+        static constexpr const _Tp1&&
+        __const_move_get(const std::pair<_Tp1, _Tp2>&& __pair) noexcept
+        { return std::forward<const _Tp1>(__pair.first); }
+    };
+
+  template<>
+    struct __pair_get<1>
+    {
+      template<typename _Tp1, typename _Tp2>
+        static constexpr _Tp2&
+        __get(std::pair<_Tp1, _Tp2>& __pair) noexcept
+        { return __pair.second; }
+
+      template<typename _Tp1, typename _Tp2>
+        static constexpr _Tp2&&
+        __move_get(std::pair<_Tp1, _Tp2>&& __pair) noexcept
+        { return std::forward<_Tp2>(__pair.second); }
+
+      template<typename _Tp1, typename _Tp2>
+        static constexpr const _Tp2&
+        __const_get(const std::pair<_Tp1, _Tp2>& __pair) noexcept
+        { return __pair.second; }
+
+      template<typename _Tp1, typename _Tp2>
+        static constexpr const _Tp2&&
+        __const_move_get(const std::pair<_Tp1, _Tp2>&& __pair) noexcept
+        { return std::forward<const _Tp2>(__pair.second); }
+    };
+
+  template<std::size_t _Int, class _Tp1, class _Tp2>
+    constexpr typename tuple_element<_Int, std::pair<_Tp1, _Tp2>>::type&
+    get(std::pair<_Tp1, _Tp2>& __in) noexcept
+    { return __pair_get<_Int>::__get(__in); }
+
+  template<std::size_t _Int, class _Tp1, class _Tp2>
+    constexpr typename tuple_element<_Int, std::pair<_Tp1, _Tp2>>::type&&
+    get(std::pair<_Tp1, _Tp2>&& __in) noexcept
+    { return __pair_get<_Int>::__move_get(std::move(__in)); }
+
+  template<std::size_t _Int, class _Tp1, class _Tp2>
+    constexpr const typename tuple_element<_Int, std::pair<_Tp1, _Tp2>>::type&
+    get(const std::pair<_Tp1, _Tp2>& __in) noexcept
+    { return __pair_get<_Int>::__const_get(__in); }
+
+  template<std::size_t _Int, class _Tp1, class _Tp2>
+    constexpr const typename tuple_element<_Int, std::pair<_Tp1, _Tp2>>::type&&
+    get(const std::pair<_Tp1, _Tp2>&& __in) noexcept
+    { return __pair_get<_Int>::__const_move_get(std::move(__in)); }
+
+
+
+
+
+  template <typename _Tp, typename _Up>
+    constexpr _Tp&
+    get(pair<_Tp, _Up>& __p) noexcept
+    { return __p.first; }
+
+  template <typename _Tp, typename _Up>
+    constexpr const _Tp&
+    get(const pair<_Tp, _Up>& __p) noexcept
+    { return __p.first; }
+
+  template <typename _Tp, typename _Up>
+    constexpr _Tp&&
+    get(pair<_Tp, _Up>&& __p) noexcept
+    { return std::move(__p.first); }
+
+  template <typename _Tp, typename _Up>
+    constexpr const _Tp&&
+    get(const pair<_Tp, _Up>&& __p) noexcept
+    { return std::move(__p.first); }
+
+  template <typename _Tp, typename _Up>
+    constexpr _Tp&
+    get(pair<_Up, _Tp>& __p) noexcept
+    { return __p.second; }
+
+  template <typename _Tp, typename _Up>
+    constexpr const _Tp&
+    get(const pair<_Up, _Tp>& __p) noexcept
+    { return __p.second; }
+
+  template <typename _Tp, typename _Up>
+    constexpr _Tp&&
+    get(pair<_Up, _Tp>&& __p) noexcept
+    { return std::move(__p.second); }
+
+  template <typename _Tp, typename _Up>
+    constexpr const _Tp&&
+    get(const pair<_Up, _Tp>&& __p) noexcept
+    { return std::move(__p.second); }
+
+
+
+
+  template <typename _Tp, typename _Up = _Tp>
+    inline _Tp
+    exchange(_Tp& __obj, _Up&& __new_val)
+    { return std::__exchange(__obj, std::forward<_Up>(__new_val)); }
+
+
+
+
+  template<size_t... _Indexes> struct _Index_tuple { };
+  template<size_t _Num>
+    struct _Build_index_tuple
+    {
+
+
+
+
+
+
+      using __type = _Index_tuple<__integer_pack(_Num)...>;
+
+    };
+
+
+
+
+
+
+  template<typename _Tp, _Tp... _Idx>
+    struct integer_sequence
+    {
+      typedef _Tp value_type;
+      static constexpr size_t size() noexcept { return sizeof...(_Idx); }
+    };
+
+
+  template<typename _Tp, _Tp _Num>
+    using make_integer_sequence
+
+
+
+      = integer_sequence<_Tp, __integer_pack(_Num)...>;
+
+
+
+
+
+  template<size_t... _Idx>
+    using index_sequence = integer_sequence<size_t, _Idx...>;
+
+
+  template<size_t _Num>
+    using make_index_sequence = make_integer_sequence<size_t, _Num>;
+
+
+  template<typename... _Types>
+    using index_sequence_for = make_index_sequence<sizeof...(_Types)>;
+
+}
+
+
+
+namespace rapidjson {
+
+
+template <typename Encoding, typename Allocator>
+class GenericValue;
+
+
+
+
+
+
+
+template <typename Encoding, typename Allocator>
+struct GenericMember {
+    GenericValue<Encoding, Allocator> name;
+    GenericValue<Encoding, Allocator> value;
+};
+template <bool Const, typename Encoding, typename Allocator>
+class GenericMemberIterator
+    : public std::iterator<std::random_access_iterator_tag
+        , typename internal::MaybeAddConst<Const,GenericMember<Encoding,Allocator> >::Type> {
+
+    friend class GenericValue<Encoding,Allocator>;
+    template <bool, typename, typename> friend class GenericMemberIterator;
+
+    typedef GenericMember<Encoding,Allocator> PlainType;
+    typedef typename internal::MaybeAddConst<Const,PlainType>::Type ValueType;
+    typedef std::iterator<std::random_access_iterator_tag,ValueType> BaseType;
+
+public:
+
+    typedef GenericMemberIterator Iterator;
+
+    typedef GenericMemberIterator<true,Encoding,Allocator> ConstIterator;
+
+    typedef GenericMemberIterator<false,Encoding,Allocator> NonConstIterator;
+
+
+    typedef typename BaseType::pointer Pointer;
+
+    typedef typename BaseType::reference Reference;
+
+    typedef typename BaseType::difference_type DifferenceType;
+
+
+
+
+
+    GenericMemberIterator() : ptr_() {}
+    GenericMemberIterator(const NonConstIterator & it) : ptr_(it.ptr_) {}
+
+
+
+    Iterator& operator++(){ ++ptr_; return *this; }
+    Iterator& operator--(){ --ptr_; return *this; }
+    Iterator operator++(int){ Iterator old(*this); ++ptr_; return old; }
+    Iterator operator--(int){ Iterator old(*this); --ptr_; return old; }
+
+
+
+
+    Iterator operator+(DifferenceType n) const { return Iterator(ptr_+n); }
+    Iterator operator-(DifferenceType n) const { return Iterator(ptr_-n); }
+
+    Iterator& operator+=(DifferenceType n) { ptr_+=n; return *this; }
+    Iterator& operator-=(DifferenceType n) { ptr_-=n; return *this; }
+
+
+
+
+    bool operator==(ConstIterator that) const { return ptr_ == that.ptr_; }
+    bool operator!=(ConstIterator that) const { return ptr_ != that.ptr_; }
+    bool operator<=(ConstIterator that) const { return ptr_ <= that.ptr_; }
+    bool operator>=(ConstIterator that) const { return ptr_ >= that.ptr_; }
+    bool operator< (ConstIterator that) const { return ptr_ < that.ptr_; }
+    bool operator> (ConstIterator that) const { return ptr_ > that.ptr_; }
+
+
+
+
+    Reference operator*() const { return *ptr_; }
+    Pointer operator->() const { return ptr_; }
+    Reference operator[](DifferenceType n) const { return ptr_[n]; }
+
+
+
+    DifferenceType operator-(ConstIterator that) const { return ptr_-that.ptr_; }
+
+private:
+
+    explicit GenericMemberIterator(Pointer p) : ptr_(p) {}
+
+    Pointer ptr_;
+};
+template<typename CharType>
+struct GenericStringRef {
+    typedef CharType Ch;
+    template<SizeType N>
+    GenericStringRef(const CharType (&str)[N]) noexcept
+        : s(str), length(N-1) {}
+    explicit GenericStringRef(const CharType* str)
+        : s(str), length(internal::StrLen(str)){ 
+                                                (static_cast <bool> (
+                                                s != 
+                                                __null) ? void (0) : __assert_fail (
+                                                "s != __null"
+                                                , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 306, __extension__ __PRETTY_FUNCTION__))
+                                                                           ; }
+    GenericStringRef(const CharType* str, SizeType len)
+        : s(str), length(len) { 
+                               (static_cast <bool> (
+                               s != 
+                               __null) ? void (0) : __assert_fail (
+                               "s != __null"
+                               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 316, __extension__ __PRETTY_FUNCTION__))
+                                                          ; }
+
+
+    operator const Ch *() const { return s; }
+
+    const Ch* const s;
+    const SizeType length;
+
+private:
+
+    GenericStringRef operator=(const GenericStringRef&);
+
+    template<SizeType N>
+    GenericStringRef(CharType (&str)[N]) ;
+};
+template<typename CharType>
+inline GenericStringRef<CharType> StringRef(const CharType* str) {
+    return GenericStringRef<CharType>(str, internal::StrLen(str));
+}
+template<typename CharType>
+inline GenericStringRef<CharType> StringRef(const CharType* str, size_t length) {
+    return GenericStringRef<CharType>(str, SizeType(length));
+}
+namespace internal {
+
+template <typename T, typename Encoding = void, typename Allocator = void>
+struct IsGenericValueImpl : FalseType {};
+
+
+template <typename T> struct IsGenericValueImpl<T, typename Void<typename T::EncodingType>::Type, typename Void<typename T::AllocatorType>::Type>
+    : IsBaseOf<GenericValue<typename T::EncodingType, typename T::AllocatorType>, T>::Type {};
+
+
+template <typename T> struct IsGenericValue : IsGenericValueImpl<T>::Type {};
+
+}
+template <typename Encoding, typename Allocator = MemoryPoolAllocator<> >
+class GenericValue {
+public:
+
+    typedef GenericMember<Encoding, Allocator> Member;
+    typedef Encoding EncodingType;
+    typedef Allocator AllocatorType;
+    typedef typename Encoding::Ch Ch;
+    typedef GenericStringRef<Ch> StringRefType;
+    typedef typename GenericMemberIterator<false,Encoding,Allocator>::Iterator MemberIterator;
+    typedef typename GenericMemberIterator<true,Encoding,Allocator>::Iterator ConstMemberIterator;
+    typedef GenericValue* ValueIterator;
+    typedef const GenericValue* ConstValueIterator;
+    typedef GenericValue<Encoding, Allocator> ValueType;
+
+
+
+
+
+    GenericValue() noexcept : data_(), flags_(kNullFlag) {}
+
+
+
+    GenericValue(GenericValue&& rhs) noexcept : data_(rhs.data_), flags_(rhs.flags_) {
+        rhs.flags_ = kNullFlag;
+    }
+
+
+private:
+
+    GenericValue(const GenericValue& rhs);
+
+public:
+
+
+
+
+
+
+    explicit GenericValue(Type type) noexcept : data_(), flags_() {
+        static const unsigned defaultFlags[7] = {
+            kNullFlag, kFalseFlag, kTrueFlag, kObjectFlag, kArrayFlag, kShortStringFlag,
+            kNumberAnyFlag
+        };
+        
+       (static_cast <bool> (
+       type <= kNumberType
+       ) ? void (0) : __assert_fail (
+       "type <= kNumberType"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 461, __extension__ __PRETTY_FUNCTION__))
+                                            ;
+        flags_ = defaultFlags[type];
+
+
+        if (type == kStringType)
+            data_.ss.SetLength(0);
+    }
+    template< typename SourceAllocator >
+    GenericValue(const GenericValue<Encoding, SourceAllocator>& rhs, Allocator & allocator);
+    template <typename T>
+    explicit GenericValue(T b, typename ::rapidjson::internal::EnableIf <typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (internal::IsSame<T,bool>)>::Type>::Type * = 
+                              __null
+                                                                            ) noexcept
+
+
+
+        : data_(), flags_(b ? kTrueFlag : kFalseFlag) {
+
+            typedef ::rapidjson::StaticAssertTest< sizeof(::rapidjson::STATIC_ASSERTION_FAILURE<bool((internal::IsSame<bool,T>::Value)) >)> StaticAssertTypedef493 __attribute__((unused));
+    }
+
+
+    explicit GenericValue(int i) noexcept : data_(), flags_(kNumberIntFlag) {
+        data_.n.i64 = i;
+        if (i >= 0)
+            flags_ |= kUintFlag | kUint64Flag;
+    }
+
+
+    explicit GenericValue(unsigned u) noexcept : data_(), flags_(kNumberUintFlag) {
+        data_.n.u64 = u;
+        if (!(u & 0x80000000))
+            flags_ |= kIntFlag | kInt64Flag;
+    }
+
+
+    explicit GenericValue(int64_t i64) noexcept : data_(), flags_(kNumberInt64Flag) {
+        data_.n.i64 = i64;
+        if (i64 >= 0) {
+            flags_ |= kNumberUint64Flag;
+            if (!(static_cast<uint64_t>(i64) & ((static_cast<uint64_t>(0xFFFFFFFF) << 32) | static_cast<uint64_t>(0x00000000))))
+                flags_ |= kUintFlag;
+            if (!(static_cast<uint64_t>(i64) & ((static_cast<uint64_t>(0xFFFFFFFF) << 32) | static_cast<uint64_t>(0x80000000))))
+                flags_ |= kIntFlag;
+        }
+        else if (i64 >= static_cast<int64_t>(((static_cast<uint64_t>(0xFFFFFFFF) << 32) | static_cast<uint64_t>(0x80000000))))
+            flags_ |= kIntFlag;
+    }
+
+
+    explicit GenericValue(uint64_t u64) noexcept : data_(), flags_(kNumberUint64Flag) {
+        data_.n.u64 = u64;
+        if (!(u64 & ((static_cast<uint64_t>(0x80000000) << 32) | static_cast<uint64_t>(0x00000000))))
+            flags_ |= kInt64Flag;
+        if (!(u64 & ((static_cast<uint64_t>(0xFFFFFFFF) << 32) | static_cast<uint64_t>(0x00000000))))
+            flags_ |= kUintFlag;
+        if (!(u64 & ((static_cast<uint64_t>(0xFFFFFFFF) << 32) | static_cast<uint64_t>(0x80000000))))
+            flags_ |= kIntFlag;
+    }
+
+
+    explicit GenericValue(double d) noexcept : data_(), flags_(kNumberDoubleFlag) { data_.n.d = d; }
+
+
+    GenericValue(const Ch* s, SizeType length) noexcept : data_(), flags_() { SetStringRaw(StringRef(s, length)); }
+
+
+    explicit GenericValue(StringRefType s) noexcept : data_(), flags_() { SetStringRaw(s); }
+
+
+    GenericValue(const Ch* s, SizeType length, Allocator& allocator) : data_(), flags_() { SetStringRaw(StringRef(s, length), allocator); }
+
+
+    GenericValue(const Ch*s, Allocator& allocator) : data_(), flags_() { SetStringRaw(StringRef(s), allocator); }
+    ~GenericValue() {
+        if (Allocator::kNeedFree) {
+            switch(flags_) {
+            case kArrayFlag:
+                for (GenericValue* v = data_.a.elements; v != data_.a.elements + data_.a.size; ++v)
+                    v->~GenericValue();
+                Allocator::Free(data_.a.elements);
+                break;
+
+            case kObjectFlag:
+                for (MemberIterator m = MemberBegin(); m != MemberEnd(); ++m)
+                    m->~Member();
+                Allocator::Free(data_.o.members);
+                break;
+
+            case kCopyStringFlag:
+                Allocator::Free(const_cast<Ch*>(data_.s.str));
+                break;
+
+            default:
+                break;
+            }
+        }
+    }
+    GenericValue& operator=(GenericValue& rhs) noexcept {
+        
+       (static_cast <bool> (
+       this != &rhs
+       ) ? void (0) : __assert_fail (
+       "this != &rhs"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 594, __extension__ __PRETTY_FUNCTION__))
+                                     ;
+        this->~GenericValue();
+        RawAssign(rhs);
+        return *this;
+    }
+
+
+
+    GenericValue& operator=(GenericValue&& rhs) noexcept {
+        return *this = rhs.Move();
+    }
+
+
+
+
+
+
+
+    GenericValue& operator=(StringRefType str) noexcept {
+        GenericValue s(str);
+        return *this = s;
+    }
+    template <typename T>
+    typename ::rapidjson::internal::DisableIf <typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (internal::IsPointer<T>)>::Type, typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (GenericValue&)>::Type>::Type
+    operator=(T value) {
+        GenericValue v(value);
+        return *this = v;
+    }
+
+
+
+
+
+
+
+    template <typename SourceAllocator>
+    GenericValue& CopyFrom(const GenericValue<Encoding, SourceAllocator>& rhs, Allocator& allocator) {
+        
+       (static_cast <bool> (
+       (void*)this != (void const*)&rhs
+       ) ? void (0) : __assert_fail (
+       "(void*)this != (void const*)&rhs"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 644, __extension__ __PRETTY_FUNCTION__))
+                                                         ;
+        this->~GenericValue();
+        new (this) GenericValue(rhs, allocator);
+        return *this;
+    }
+
+
+
+
+
+
+    GenericValue& Swap(GenericValue& other) noexcept {
+        GenericValue temp;
+        temp.RawAssign(*this);
+        RawAssign(other);
+        other.RawAssign(temp);
+        return *this;
+    }
+
+
+
+    GenericValue& Move() noexcept { return *this; }
+    template <typename SourceAllocator>
+    bool operator==(const GenericValue<Encoding, SourceAllocator>& rhs) const {
+        typedef GenericValue<Encoding, SourceAllocator> RhsType;
+        if (GetType() != rhs.GetType())
+            return false;
+
+        switch (GetType()) {
+        case kObjectType:
+            if (data_.o.size != rhs.data_.o.size)
+                return false;
+            for (ConstMemberIterator lhsMemberItr = MemberBegin(); lhsMemberItr != MemberEnd(); ++lhsMemberItr) {
+                typename RhsType::ConstMemberIterator rhsMemberItr = rhs.FindMember(lhsMemberItr->name);
+                if (rhsMemberItr == rhs.MemberEnd() || lhsMemberItr->value != rhsMemberItr->value)
+                    return false;
+            }
+            return true;
+
+        case kArrayType:
+            if (data_.a.size != rhs.data_.a.size)
+                return false;
+            for (SizeType i = 0; i < data_.a.size; i++)
+                if ((*this)[i] != rhs[i])
+                    return false;
+            return true;
+
+        case kStringType:
+            return StringEqual(rhs);
+
+        case kNumberType:
+            if (IsDouble() || rhs.IsDouble()) {
+                double a = GetDouble();
+                double b = rhs.GetDouble();
+                return a >= b && a <= b;
+            }
+            else
+                return data_.n.u64 == rhs.data_.n.u64;
+
+        default:
+            return true;
+        }
+    }
+
+
+    bool operator==(const Ch* rhs) const { return *this == GenericValue(StringRef(rhs)); }
+    template <typename T> typename ::rapidjson::internal::DisableIf <typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (internal::OrExpr<internal::IsPointer<T>,internal::IsGenericValue<T> >)>::Type, typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (bool)>::Type>::Type operator==(const T& rhs) const { return *this == GenericValue(rhs); }
+
+
+
+
+    template <typename SourceAllocator>
+    bool operator!=(const GenericValue<Encoding, SourceAllocator>& rhs) const { return !(*this == rhs); }
+
+
+    bool operator!=(const Ch* rhs) const { return !(*this == rhs); }
+
+
+
+
+    template <typename T> typename ::rapidjson::internal::DisableIf <typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (internal::IsGenericValue<T>)>::Type, typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (bool)>::Type>::Type operator!=(const T& rhs) const { return !(*this == rhs); }
+
+
+
+
+    template <typename T> friend typename ::rapidjson::internal::DisableIf <typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (internal::IsGenericValue<T>)>::Type, typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (bool)>::Type>::Type operator==(const T& lhs, const GenericValue& rhs) { return rhs == lhs; }
+
+
+
+
+    template <typename T> friend typename ::rapidjson::internal::DisableIf <typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (internal::IsGenericValue<T>)>::Type, typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (bool)>::Type>::Type operator!=(const T& lhs, const GenericValue& rhs) { return !(rhs == lhs); }
+
+
+
+
+
+    Type GetType() const { return static_cast<Type>(flags_ & kTypeMask); }
+    bool IsNull() const { return flags_ == kNullFlag; }
+    bool IsFalse() const { return flags_ == kFalseFlag; }
+    bool IsTrue() const { return flags_ == kTrueFlag; }
+    bool IsBool() const { return (flags_ & kBoolFlag) != 0; }
+    bool IsObject() const { return flags_ == kObjectFlag; }
+    bool IsArray() const { return flags_ == kArrayFlag; }
+    bool IsNumber() const { return (flags_ & kNumberFlag) != 0; }
+    bool IsInt() const { return (flags_ & kIntFlag) != 0; }
+    bool IsUint() const { return (flags_ & kUintFlag) != 0; }
+    bool IsInt64() const { return (flags_ & kInt64Flag) != 0; }
+    bool IsUint64() const { return (flags_ & kUint64Flag) != 0; }
+    bool IsDouble() const { return (flags_ & kDoubleFlag) != 0; }
+    bool IsString() const { return (flags_ & kStringFlag) != 0; }
+
+
+
+
+
+
+    GenericValue& SetNull() { this->~GenericValue(); new (this) GenericValue(); return *this; }
+
+
+
+
+
+
+    bool GetBool() const { 
+                          (static_cast <bool> (
+                          IsBool()
+                          ) ? void (0) : __assert_fail (
+                          "IsBool()"
+                          , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 787, __extension__ __PRETTY_FUNCTION__))
+                                                    ; return flags_ == kTrueFlag; }
+
+
+    GenericValue& SetBool(bool b) { this->~GenericValue(); new (this) GenericValue(b); return *this; }
+    GenericValue& SetObject() { this->~GenericValue(); new (this) GenericValue(kObjectType); return *this; }
+
+
+    SizeType MemberCount() const { 
+                                  (static_cast <bool> (
+                                  IsObject()
+                                  ) ? void (0) : __assert_fail (
+                                  "IsObject()"
+                                  , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 802, __extension__ __PRETTY_FUNCTION__))
+                                                              ; return data_.o.size; }
+
+
+    bool ObjectEmpty() const { 
+                              (static_cast <bool> (
+                              IsObject()
+                              ) ? void (0) : __assert_fail (
+                              "IsObject()"
+                              , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 805, __extension__ __PRETTY_FUNCTION__))
+                                                          ; return data_.o.size == 0; }
+    template <typename T>
+    typename ::rapidjson::internal::DisableIf <typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (internal::NotExpr<internal::IsSame<typename internal::RemoveConst<T>::Type, Ch> >)>::Type, typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (GenericValue&)>::Type>::Type operator[](T* name) {
+        GenericValue n(StringRef(name));
+        return (*this)[n];
+    }
+    template <typename T>
+    typename ::rapidjson::internal::DisableIf <typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (internal::NotExpr<internal::IsSame<typename internal::RemoveConst<T>::Type, Ch> >)>::Type, typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (const GenericValue&)>::Type>::Type operator[](T* name) const { return const_cast<GenericValue&>(*this)[name]; }
+    template <typename SourceAllocator>
+    GenericValue& operator[](const GenericValue<Encoding, SourceAllocator>& name) {
+        MemberIterator member = FindMember(name);
+        if (member != MemberEnd())
+            return member->value;
+        else {
+            
+           (static_cast <bool> (
+           false
+           ) ? void (0) : __assert_fail (
+           "false"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 839, __extension__ __PRETTY_FUNCTION__))
+                                  ;
+            static GenericValue NullValue;
+            return NullValue;
+        }
+    }
+    template <typename SourceAllocator>
+    const GenericValue& operator[](const GenericValue<Encoding, SourceAllocator>& name) const { return const_cast<GenericValue&>(*this)[name]; }
+    ConstMemberIterator MemberBegin() const { 
+                                             (static_cast <bool> (
+                                             IsObject()
+                                             ) ? void (0) : __assert_fail (
+                                             "IsObject()"
+                                             , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 855, __extension__ __PRETTY_FUNCTION__))
+                                                                         ; return ConstMemberIterator(data_.o.members); }
+
+
+    ConstMemberIterator MemberEnd() const { 
+                                             (static_cast <bool> (
+                                             IsObject()
+                                             ) ? void (0) : __assert_fail (
+                                             "IsObject()"
+                                             , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 858, __extension__ __PRETTY_FUNCTION__))
+                                                                         ; return ConstMemberIterator(data_.o.members + data_.o.size); }
+
+
+    MemberIterator MemberBegin() { 
+                                             (static_cast <bool> (
+                                             IsObject()
+                                             ) ? void (0) : __assert_fail (
+                                             "IsObject()"
+                                             , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 861, __extension__ __PRETTY_FUNCTION__))
+                                                                         ; return MemberIterator(data_.o.members); }
+
+
+    MemberIterator MemberEnd() { 
+                                             (static_cast <bool> (
+                                             IsObject()
+                                             ) ? void (0) : __assert_fail (
+                                             "IsObject()"
+                                             , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 864, __extension__ __PRETTY_FUNCTION__))
+                                                                         ; return MemberIterator(data_.o.members + data_.o.size); }
+    bool HasMember(const Ch* name) const { return FindMember(name) != MemberEnd(); }
+    template <typename SourceAllocator>
+    bool HasMember(const GenericValue<Encoding, SourceAllocator>& name) const { return FindMember(name) != MemberEnd(); }
+    MemberIterator FindMember(const Ch* name) {
+        GenericValue n(StringRef(name));
+        return FindMember(n);
+    }
+
+    ConstMemberIterator FindMember(const Ch* name) const { return const_cast<GenericValue&>(*this).FindMember(name); }
+    template <typename SourceAllocator>
+    MemberIterator FindMember(const GenericValue<Encoding, SourceAllocator>& name) {
+        
+       (static_cast <bool> (
+       IsObject()
+       ) ? void (0) : __assert_fail (
+       "IsObject()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 934, __extension__ __PRETTY_FUNCTION__))
+                                   ;
+        
+       (static_cast <bool> (
+       name.IsString()
+       ) ? void (0) : __assert_fail (
+       "name.IsString()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 935, __extension__ __PRETTY_FUNCTION__))
+                                        ;
+        MemberIterator member = MemberBegin();
+        for ( ; member != MemberEnd(); ++member)
+            if (name.StringEqual(member->name))
+                break;
+        return member;
+    }
+    template <typename SourceAllocator> ConstMemberIterator FindMember(const GenericValue<Encoding, SourceAllocator>& name) const { return const_cast<GenericValue&>(*this).FindMember(name); }
+    GenericValue& AddMember(GenericValue& name, GenericValue& value, Allocator& allocator) {
+        
+       (static_cast <bool> (
+       IsObject()
+       ) ? void (0) : __assert_fail (
+       "IsObject()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 967, __extension__ __PRETTY_FUNCTION__))
+                                   ;
+        
+       (static_cast <bool> (
+       name.IsString()
+       ) ? void (0) : __assert_fail (
+       "name.IsString()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 968, __extension__ __PRETTY_FUNCTION__))
+                                        ;
+
+        Object& o = data_.o;
+        if (o.size >= o.capacity) {
+            if (o.capacity == 0) {
+                o.capacity = kDefaultObjectCapacity;
+                o.members = reinterpret_cast<Member*>(allocator.Malloc(o.capacity * sizeof(Member)));
+            }
+            else {
+                SizeType oldCapacity = o.capacity;
+                o.capacity += (oldCapacity + 1) / 2;
+                o.members = reinterpret_cast<Member*>(allocator.Realloc(o.members, oldCapacity * sizeof(Member), o.capacity * sizeof(Member)));
+            }
+        }
+        o.members[o.size].name.RawAssign(name);
+        o.members[o.size].value.RawAssign(value);
+        o.size++;
+        return *this;
+    }
+    GenericValue& AddMember(GenericValue& name, StringRefType value, Allocator& allocator) {
+        GenericValue v(value);
+        return AddMember(name, v, allocator);
+    }
+    template <typename T>
+    typename ::rapidjson::internal::DisableIf <typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >)>::Type, typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (GenericValue&)>::Type>::Type
+    AddMember(GenericValue& name, T value, Allocator& allocator) {
+        GenericValue v(value);
+        return AddMember(name, v, allocator);
+    }
+
+
+    GenericValue& AddMember(GenericValue&& name, GenericValue&& value, Allocator& allocator) {
+        return AddMember(name, value, allocator);
+    }
+    GenericValue& AddMember(GenericValue&& name, GenericValue& value, Allocator& allocator) {
+        return AddMember(name, value, allocator);
+    }
+    GenericValue& AddMember(GenericValue& name, GenericValue&& value, Allocator& allocator) {
+        return AddMember(name, value, allocator);
+    }
+    GenericValue& AddMember(StringRefType name, GenericValue&& value, Allocator& allocator) {
+        GenericValue n(name);
+        return AddMember(n, value, allocator);
+    }
+    GenericValue& AddMember(StringRefType name, GenericValue& value, Allocator& allocator) {
+        GenericValue n(name);
+        return AddMember(n, value, allocator);
+    }
+    GenericValue& AddMember(StringRefType name, StringRefType value, Allocator& allocator) {
+        GenericValue v(value);
+        return AddMember(name, v, allocator);
+    }
+    template <typename T>
+    typename ::rapidjson::internal::DisableIf <typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >)>::Type, typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (GenericValue&)>::Type>::Type
+    AddMember(StringRefType name, T value, Allocator& allocator) {
+        GenericValue n(name);
+        return AddMember(n, value, allocator);
+    }
+
+
+
+
+
+    void RemoveAllMembers() {
+        
+       (static_cast <bool> (
+       IsObject()
+       ) ? void (0) : __assert_fail (
+       "IsObject()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1117, __extension__ __PRETTY_FUNCTION__))
+                                   ;
+        for (MemberIterator m = MemberBegin(); m != MemberEnd(); ++m)
+            m->~Member();
+        data_.o.size = 0;
+    }
+    bool RemoveMember(const Ch* name) {
+        GenericValue n(StringRef(name));
+        return RemoveMember(n);
+    }
+
+
+
+
+
+    template <typename SourceAllocator>
+    bool RemoveMember(const GenericValue<Encoding, SourceAllocator>& name) {
+        MemberIterator m = FindMember(name);
+        if (m != MemberEnd()) {
+            RemoveMember(m);
+            return true;
+        }
+        else
+            return false;
+    }
+    MemberIterator RemoveMember(MemberIterator m) {
+        
+       (static_cast <bool> (
+       IsObject()
+       ) ? void (0) : __assert_fail (
+       "IsObject()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1160, __extension__ __PRETTY_FUNCTION__))
+                                   ;
+        
+       (static_cast <bool> (
+       data_.o.size > 0
+       ) ? void (0) : __assert_fail (
+       "data_.o.size > 0"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1161, __extension__ __PRETTY_FUNCTION__))
+                                         ;
+        
+       (static_cast <bool> (
+       data_.o.members != 0
+       ) ? void (0) : __assert_fail (
+       "data_.o.members != 0"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1162, __extension__ __PRETTY_FUNCTION__))
+                                             ;
+        
+       (static_cast <bool> (
+       m >= MemberBegin() && m < MemberEnd()
+       ) ? void (0) : __assert_fail (
+       "m >= MemberBegin() && m < MemberEnd()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1163, __extension__ __PRETTY_FUNCTION__))
+                                                              ;
+
+        MemberIterator last(data_.o.members + (data_.o.size - 1));
+        if (data_.o.size > 1 && m != last) {
+
+            *m = *last;
+        }
+        else {
+
+            m->~Member();
+        }
+        --data_.o.size;
+        return m;
+    }
+    MemberIterator EraseMember(ConstMemberIterator pos) {
+        return EraseMember(pos, pos +1);
+    }
+    MemberIterator EraseMember(ConstMemberIterator first, ConstMemberIterator last) {
+        
+       (static_cast <bool> (
+       IsObject()
+       ) ? void (0) : __assert_fail (
+       "IsObject()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1201, __extension__ __PRETTY_FUNCTION__))
+                                   ;
+        
+       (static_cast <bool> (
+       data_.o.size > 0
+       ) ? void (0) : __assert_fail (
+       "data_.o.size > 0"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1202, __extension__ __PRETTY_FUNCTION__))
+                                         ;
+        
+       (static_cast <bool> (
+       data_.o.members != 0
+       ) ? void (0) : __assert_fail (
+       "data_.o.members != 0"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1203, __extension__ __PRETTY_FUNCTION__))
+                                             ;
+        
+       (static_cast <bool> (
+       first >= MemberBegin()
+       ) ? void (0) : __assert_fail (
+       "first >= MemberBegin()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1204, __extension__ __PRETTY_FUNCTION__))
+                                               ;
+        
+       (static_cast <bool> (
+       first <= last
+       ) ? void (0) : __assert_fail (
+       "first <= last"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1205, __extension__ __PRETTY_FUNCTION__))
+                                      ;
+        
+       (static_cast <bool> (
+       last <= MemberEnd()
+       ) ? void (0) : __assert_fail (
+       "last <= MemberEnd()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1206, __extension__ __PRETTY_FUNCTION__))
+                                            ;
+
+        MemberIterator pos = MemberBegin() + (first - MemberBegin());
+        for (MemberIterator itr = pos; itr != last; ++itr)
+            itr->~Member();
+        std::memmove(&*pos, &*last, (MemberEnd() - last) * sizeof(Member));
+        data_.o.size -= (last - first);
+        return pos;
+    }
+
+
+
+
+
+
+    bool EraseMember(const Ch* name) {
+        GenericValue n(StringRef(name));
+        return EraseMember(n);
+    }
+
+
+
+
+
+    template <typename SourceAllocator>
+    bool EraseMember(const GenericValue<Encoding, SourceAllocator>& name) {
+        MemberIterator m = FindMember(name);
+        if (m != MemberEnd()) {
+            EraseMember(m);
+            return true;
+        }
+        else
+            return false;
+    }
+    GenericValue& SetArray() { this->~GenericValue(); new (this) GenericValue(kArrayType); return *this; }
+
+
+    SizeType Size() const { 
+                           (static_cast <bool> (
+                           IsArray()
+                           ) ? void (0) : __assert_fail (
+                           "IsArray()"
+                           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1251, __extension__ __PRETTY_FUNCTION__))
+                                                      ; return data_.a.size; }
+
+
+    SizeType Capacity() const { 
+                               (static_cast <bool> (
+                               IsArray()
+                               ) ? void (0) : __assert_fail (
+                               "IsArray()"
+                               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1254, __extension__ __PRETTY_FUNCTION__))
+                                                          ; return data_.a.capacity; }
+
+
+    bool Empty() const { 
+                        (static_cast <bool> (
+                        IsArray()
+                        ) ? void (0) : __assert_fail (
+                        "IsArray()"
+                        , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1257, __extension__ __PRETTY_FUNCTION__))
+                                                   ; return data_.a.size == 0; }
+
+
+
+
+
+    void Clear() {
+        
+       (static_cast <bool> (
+       IsArray()
+       ) ? void (0) : __assert_fail (
+       "IsArray()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1264, __extension__ __PRETTY_FUNCTION__))
+                                  ;
+        for (SizeType i = 0; i < data_.a.size; ++i)
+            data_.a.elements[i].~GenericValue();
+        data_.a.size = 0;
+    }
+
+
+
+
+
+
+    GenericValue& operator[](SizeType index) {
+        
+       (static_cast <bool> (
+       IsArray()
+       ) ? void (0) : __assert_fail (
+       "IsArray()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1276, __extension__ __PRETTY_FUNCTION__))
+                                  ;
+        
+       (static_cast <bool> (
+       index < data_.a.size
+       ) ? void (0) : __assert_fail (
+       "index < data_.a.size"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1277, __extension__ __PRETTY_FUNCTION__))
+                                             ;
+        return data_.a.elements[index];
+    }
+    const GenericValue& operator[](SizeType index) const { return const_cast<GenericValue&>(*this)[index]; }
+
+
+
+    ValueIterator Begin() { 
+                           (static_cast <bool> (
+                           IsArray()
+                           ) ? void (0) : __assert_fail (
+                           "IsArray()"
+                           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1284, __extension__ __PRETTY_FUNCTION__))
+                                                      ; return data_.a.elements; }
+
+
+    ValueIterator End() { 
+                         (static_cast <bool> (
+                         IsArray()
+                         ) ? void (0) : __assert_fail (
+                         "IsArray()"
+                         , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1287, __extension__ __PRETTY_FUNCTION__))
+                                                    ; return data_.a.elements + data_.a.size; }
+
+
+    ConstValueIterator Begin() const { return const_cast<GenericValue&>(*this).Begin(); }
+
+
+    ConstValueIterator End() const { return const_cast<GenericValue&>(*this).End(); }
+
+
+
+
+
+
+
+    GenericValue& Reserve(SizeType newCapacity, Allocator &allocator) {
+        
+       (static_cast <bool> (
+       IsArray()
+       ) ? void (0) : __assert_fail (
+       "IsArray()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1302, __extension__ __PRETTY_FUNCTION__))
+                                  ;
+        if (newCapacity > data_.a.capacity) {
+            data_.a.elements = (GenericValue*)allocator.Realloc(data_.a.elements, data_.a.capacity * sizeof(GenericValue), newCapacity * sizeof(GenericValue));
+            data_.a.capacity = newCapacity;
+        }
+        return *this;
+    }
+    GenericValue& PushBack(GenericValue& value, Allocator& allocator) {
+        
+       (static_cast <bool> (
+       IsArray()
+       ) ? void (0) : __assert_fail (
+       "IsArray()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1321, __extension__ __PRETTY_FUNCTION__))
+                                  ;
+        if (data_.a.size >= data_.a.capacity)
+            Reserve(data_.a.capacity == 0 ? kDefaultArrayCapacity : (data_.a.capacity + (data_.a.capacity + 1) / 2), allocator);
+        data_.a.elements[data_.a.size++].RawAssign(value);
+        return *this;
+    }
+
+
+    GenericValue& PushBack(GenericValue&& value, Allocator& allocator) {
+        return PushBack(value, allocator);
+    }
+    GenericValue& PushBack(StringRefType value, Allocator& allocator) {
+        return (*this).template PushBack<StringRefType>(value, allocator);
+    }
+    template <typename T>
+    typename ::rapidjson::internal::DisableIf <typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >)>::Type, typename ::rapidjson::internal::RemoveSfinaeTag < ::rapidjson::internal::SfinaeTag&(*) (GenericValue&)>::Type>::Type
+    PushBack(T value, Allocator& allocator) {
+        GenericValue v(value);
+        return PushBack(v, allocator);
+    }
+
+
+
+
+
+    GenericValue& PopBack() {
+        
+       (static_cast <bool> (
+       IsArray()
+       ) ? void (0) : __assert_fail (
+       "IsArray()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1376, __extension__ __PRETTY_FUNCTION__))
+                                  ;
+        
+       (static_cast <bool> (
+       !Empty()
+       ) ? void (0) : __assert_fail (
+       "!Empty()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1377, __extension__ __PRETTY_FUNCTION__))
+                                 ;
+        data_.a.elements[--data_.a.size].~GenericValue();
+        return *this;
+    }
+    ValueIterator Erase(ConstValueIterator pos) {
+        return Erase(pos, pos + 1);
+    }
+    ValueIterator Erase(ConstValueIterator first, ConstValueIterator last) {
+        
+       (static_cast <bool> (
+       IsArray()
+       ) ? void (0) : __assert_fail (
+       "IsArray()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1402, __extension__ __PRETTY_FUNCTION__))
+                                  ;
+        
+       (static_cast <bool> (
+       data_.a.size > 0
+       ) ? void (0) : __assert_fail (
+       "data_.a.size > 0"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1403, __extension__ __PRETTY_FUNCTION__))
+                                         ;
+        
+       (static_cast <bool> (
+       data_.a.elements != 0
+       ) ? void (0) : __assert_fail (
+       "data_.a.elements != 0"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1404, __extension__ __PRETTY_FUNCTION__))
+                                              ;
+        
+       (static_cast <bool> (
+       first >= Begin()
+       ) ? void (0) : __assert_fail (
+       "first >= Begin()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1405, __extension__ __PRETTY_FUNCTION__))
+                                         ;
+        
+       (static_cast <bool> (
+       first <= last
+       ) ? void (0) : __assert_fail (
+       "first <= last"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1406, __extension__ __PRETTY_FUNCTION__))
+                                      ;
+        
+       (static_cast <bool> (
+       last <= End()
+       ) ? void (0) : __assert_fail (
+       "last <= End()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1407, __extension__ __PRETTY_FUNCTION__))
+                                      ;
+        ValueIterator pos = Begin() + (first - Begin());
+        for (ValueIterator itr = pos; itr != last; ++itr)
+            itr->~GenericValue();
+        std::memmove(pos, last, (End() - last) * sizeof(GenericValue));
+        data_.a.size -= (last - first);
+        return pos;
+    }
+
+
+
+
+
+
+    int GetInt() const { 
+                                 (static_cast <bool> (
+                                 flags_ & kIntFlag
+                                 ) ? void (0) : __assert_fail (
+                                 "flags_ & kIntFlag"
+                                 , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1421, __extension__ __PRETTY_FUNCTION__))
+                                                                    ; return data_.n.i.i; }
+    unsigned GetUint() const { 
+                                 (static_cast <bool> (
+                                 flags_ & kUintFlag
+                                 ) ? void (0) : __assert_fail (
+                                 "flags_ & kUintFlag"
+                                 , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1422, __extension__ __PRETTY_FUNCTION__))
+                                                                     ; return data_.n.u.u; }
+    int64_t GetInt64() const { 
+                                 (static_cast <bool> (
+                                 flags_ & kInt64Flag
+                                 ) ? void (0) : __assert_fail (
+                                 "flags_ & kInt64Flag"
+                                 , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1423, __extension__ __PRETTY_FUNCTION__))
+                                                                      ; return data_.n.i64; }
+    uint64_t GetUint64() const { 
+                                 (static_cast <bool> (
+                                 flags_ & kUint64Flag
+                                 ) ? void (0) : __assert_fail (
+                                 "flags_ & kUint64Flag"
+                                 , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1424, __extension__ __PRETTY_FUNCTION__))
+                                                                       ; return data_.n.u64; }
+
+    double GetDouble() const {
+        
+       (static_cast <bool> (
+       IsNumber()
+       ) ? void (0) : __assert_fail (
+       "IsNumber()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1427, __extension__ __PRETTY_FUNCTION__))
+                                   ;
+        if ((flags_ & kDoubleFlag) != 0) return data_.n.d;
+        if ((flags_ & kIntFlag) != 0) return data_.n.i.i;
+        if ((flags_ & kUintFlag) != 0) return data_.n.u.u;
+        if ((flags_ & kInt64Flag) != 0) return (double)data_.n.i64;
+        
+       (static_cast <bool> (
+       (flags_ & kUint64Flag) != 0
+       ) ? void (0) : __assert_fail (
+       "(flags_ & kUint64Flag) != 0"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1432, __extension__ __PRETTY_FUNCTION__))
+                                                    ; return (double)data_.n.u64;
+    }
+
+    GenericValue& SetInt(int i) { this->~GenericValue(); new (this) GenericValue(i); return *this; }
+    GenericValue& SetUint(unsigned u) { this->~GenericValue(); new (this) GenericValue(u); return *this; }
+    GenericValue& SetInt64(int64_t i64) { this->~GenericValue(); new (this) GenericValue(i64); return *this; }
+    GenericValue& SetUint64(uint64_t u64) { this->~GenericValue(); new (this) GenericValue(u64); return *this; }
+    GenericValue& SetDouble(double d) { this->~GenericValue(); new (this) GenericValue(d); return *this; }
+
+
+
+
+
+
+    const Ch* GetString() const { 
+                                 (static_cast <bool> (
+                                 IsString()
+                                 ) ? void (0) : __assert_fail (
+                                 "IsString()"
+                                 , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1446, __extension__ __PRETTY_FUNCTION__))
+                                                             ; return ((flags_ & kInlineStrFlag) ? data_.ss.str : data_.s.str); }
+
+
+
+
+    SizeType GetStringLength() const { 
+                                      (static_cast <bool> (
+                                      IsString()
+                                      ) ? void (0) : __assert_fail (
+                                      "IsString()"
+                                      , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1451, __extension__ __PRETTY_FUNCTION__))
+                                                                  ; return ((flags_ & kInlineStrFlag) ? (data_.ss.GetLength()) : data_.s.length); }
+    GenericValue& SetString(const Ch* s, SizeType length) { return SetString(StringRef(s, length)); }
+
+
+
+
+
+
+    GenericValue& SetString(StringRefType s) { this->~GenericValue(); SetStringRaw(s); return *this; }
+    GenericValue& SetString(const Ch* s, SizeType length, Allocator& allocator) { this->~GenericValue(); SetStringRaw(StringRef(s, length), allocator); return *this; }
+
+
+
+
+
+
+
+    GenericValue& SetString(const Ch* s, Allocator& allocator) { return SetString(s, internal::StrLen(s), allocator); }
+    template <typename Handler>
+    bool Accept(Handler& handler) const {
+        switch(GetType()) {
+        case kNullType: return handler.Null();
+        case kFalseType: return handler.Bool(false);
+        case kTrueType: return handler.Bool(true);
+
+        case kObjectType:
+            if (!handler.StartObject())
+                return false;
+            for (ConstMemberIterator m = MemberBegin(); m != MemberEnd(); ++m) {
+                
+               (static_cast <bool> (
+               m->name.IsString()
+               ) ? void (0) : __assert_fail (
+               "m->name.IsString()"
+               , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1519, __extension__ __PRETTY_FUNCTION__))
+                                                   ;
+                if (!handler.Key(m->name.GetString(), m->name.GetStringLength(), (m->name.flags_ & kCopyFlag) != 0))
+                    return false;
+                if (!m->value.Accept(handler))
+                    return false;
+            }
+            return handler.EndObject(data_.o.size);
+
+        case kArrayType:
+            if (!handler.StartArray())
+                return false;
+            for (GenericValue* v = data_.a.elements; v != data_.a.elements + data_.a.size; ++v)
+                if (!v->Accept(handler))
+                    return false;
+            return handler.EndArray(data_.a.size);
+
+        case kStringType:
+            return handler.String(GetString(), GetStringLength(), (flags_ & kCopyFlag) != 0);
+
+        default:
+            
+           (static_cast <bool> (
+           GetType() == kNumberType
+           ) ? void (0) : __assert_fail (
+           "GetType() == kNumberType"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1539, __extension__ __PRETTY_FUNCTION__))
+                                                     ;
+            if (IsInt()) return handler.Int(data_.n.i.i);
+            else if (IsUint()) return handler.Uint(data_.n.u.u);
+            else if (IsInt64()) return handler.Int64(data_.n.i64);
+            else if (IsUint64()) return handler.Uint64(data_.n.u64);
+            else return handler.Double(data_.n.d);
+        }
+    }
+
+private:
+    template <typename, typename> friend class GenericValue;
+    template <typename, typename, typename> friend class GenericDocument;
+
+    enum {
+        kBoolFlag = 0x100,
+        kNumberFlag = 0x200,
+        kIntFlag = 0x400,
+        kUintFlag = 0x800,
+        kInt64Flag = 0x1000,
+        kUint64Flag = 0x2000,
+        kDoubleFlag = 0x4000,
+        kStringFlag = 0x100000,
+        kCopyFlag = 0x200000,
+        kInlineStrFlag = 0x400000,
+
+
+        kNullFlag = kNullType,
+        kTrueFlag = kTrueType | kBoolFlag,
+        kFalseFlag = kFalseType | kBoolFlag,
+        kNumberIntFlag = kNumberType | kNumberFlag | kIntFlag | kInt64Flag,
+        kNumberUintFlag = kNumberType | kNumberFlag | kUintFlag | kUint64Flag | kInt64Flag,
+        kNumberInt64Flag = kNumberType | kNumberFlag | kInt64Flag,
+        kNumberUint64Flag = kNumberType | kNumberFlag | kUint64Flag,
+        kNumberDoubleFlag = kNumberType | kNumberFlag | kDoubleFlag,
+        kNumberAnyFlag = kNumberType | kNumberFlag | kIntFlag | kInt64Flag | kUintFlag | kUint64Flag | kDoubleFlag,
+        kConstStringFlag = kStringType | kStringFlag,
+        kCopyStringFlag = kStringType | kStringFlag | kCopyFlag,
+        kShortStringFlag = kStringType | kStringFlag | kCopyFlag | kInlineStrFlag,
+        kObjectFlag = kObjectType,
+        kArrayFlag = kArrayType,
+
+        kTypeMask = 0xFF
+    };
+
+    static const SizeType kDefaultArrayCapacity = 16;
+    static const SizeType kDefaultObjectCapacity = 16;
+
+    struct String {
+        const Ch* str;
+        SizeType length;
+        unsigned hashcode;
+    };
+    struct ShortString {
+        enum { MaxChars = sizeof(String) / sizeof(Ch), MaxSize = MaxChars - 1, LenPos = MaxSize };
+        Ch str[MaxChars];
+
+        inline static bool Usable(SizeType len) { return (MaxSize >= len); }
+        inline void SetLength(SizeType len) { str[LenPos] = (Ch)(MaxSize - len); }
+        inline SizeType GetLength() const { return (SizeType)(MaxSize - str[LenPos]); }
+    };
+
+
+    union Number {
+
+        struct I {
+            int i;
+            char padding[4];
+        }i;
+        struct U {
+            unsigned u;
+            char padding2[4];
+        }u;
+        int64_t i64;
+        uint64_t u64;
+        double d;
+    };
+
+    struct Object {
+        Member* members;
+        SizeType size;
+        SizeType capacity;
+    };
+
+    struct Array {
+        GenericValue* elements;
+        SizeType size;
+        SizeType capacity;
+    };
+
+    union Data {
+        String s;
+        ShortString ss;
+        Number n;
+        Object o;
+        Array a;
+    };
+
+
+    void SetArrayRaw(GenericValue* values, SizeType count, Allocator& allocator) {
+        flags_ = kArrayFlag;
+        if (count) {
+            data_.a.elements = (GenericValue*)allocator.Malloc(count * sizeof(GenericValue));
+            std::memcpy(data_.a.elements, values, count * sizeof(GenericValue));
+        }
+        else
+            data_.a.elements = 
+                              __null
+                                  ;
+        data_.a.size = data_.a.capacity = count;
+    }
+
+
+    void SetObjectRaw(Member* members, SizeType count, Allocator& allocator) {
+        flags_ = kObjectFlag;
+        if (count) {
+            data_.o.members = (Member*)allocator.Malloc(count * sizeof(Member));
+            std::memcpy(data_.o.members, members, count * sizeof(Member));
+        }
+        else
+            data_.o.members = 
+                             __null
+                                 ;
+        data_.o.size = data_.o.capacity = count;
+    }
+
+
+    void SetStringRaw(StringRefType s) noexcept {
+        flags_ = kConstStringFlag;
+        data_.s.str = s;
+        data_.s.length = s.length;
+    }
+
+
+    void SetStringRaw(StringRefType s, Allocator& allocator) {
+        Ch* str = 
+                 __null
+                     ;
+        if(ShortString::Usable(s.length)) {
+            flags_ = kShortStringFlag;
+            data_.ss.SetLength(s.length);
+            str = data_.ss.str;
+        } else {
+            flags_ = kCopyStringFlag;
+            data_.s.length = s.length;
+            str = (Ch *)allocator.Malloc((s.length + 1) * sizeof(Ch));
+            data_.s.str = str;
+        }
+        std::memcpy(str, s, s.length * sizeof(Ch));
+        str[s.length] = '\0';
+    }
+
+
+    void RawAssign(GenericValue& rhs) noexcept {
+        data_ = rhs.data_;
+        flags_ = rhs.flags_;
+        rhs.flags_ = kNullFlag;
+    }
+
+    template <typename SourceAllocator>
+    bool StringEqual(const GenericValue<Encoding, SourceAllocator>& rhs) const {
+        
+       (static_cast <bool> (
+       IsString()
+       ) ? void (0) : __assert_fail (
+       "IsString()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1712, __extension__ __PRETTY_FUNCTION__))
+                                   ;
+        
+       (static_cast <bool> (
+       rhs.IsString()
+       ) ? void (0) : __assert_fail (
+       "rhs.IsString()"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1713, __extension__ __PRETTY_FUNCTION__))
+                                       ;
+
+        const SizeType len1 = GetStringLength();
+        const SizeType len2 = rhs.GetStringLength();
+        if(len1 != len2) { return false; }
+
+        const Ch* const str1 = GetString();
+        const Ch* const str2 = rhs.GetString();
+        if(str1 == str2) { return true; }
+
+        return (std::memcmp(str1, str2, sizeof(Ch) * len1) == 0);
+    }
+
+    Data data_;
+    unsigned flags_;
+};
+
+
+typedef GenericValue<UTF8<> > Value;
+template <typename Encoding, typename Allocator = MemoryPoolAllocator<>, typename StackAllocator = CrtAllocator>
+class GenericDocument : public GenericValue<Encoding, Allocator> {
+public:
+    typedef typename Encoding::Ch Ch;
+    typedef GenericValue<Encoding, Allocator> ValueType;
+    typedef Allocator AllocatorType;
+
+
+
+
+
+
+    GenericDocument(Allocator* allocator = 0, size_t stackCapacity = kDefaultStackCapacity, StackAllocator* stackAllocator = 0) :
+        allocator_(allocator), ownAllocator_(0), stack_(stackAllocator, stackCapacity), parseResult_()
+    {
+        if (!allocator_)
+            ownAllocator_ = allocator_ = new Allocator();
+    }
+
+
+
+    GenericDocument(GenericDocument&& rhs) noexcept
+        : ValueType(std::move(rhs)),
+          allocator_(rhs.allocator_),
+          ownAllocator_(rhs.ownAllocator_),
+          stack_(std::move(rhs.stack_)),
+          parseResult_(rhs.parseResult_)
+    {
+        rhs.allocator_ = 0;
+        rhs.ownAllocator_ = 0;
+        rhs.parseResult_ = ParseResult();
+    }
+
+
+    ~GenericDocument() {
+        Destroy();
+    }
+
+
+
+    GenericDocument& operator=(GenericDocument&& rhs) noexcept
+    {
+
+
+        ValueType::operator=(std::forward<ValueType>(rhs));
+
+
+        Destroy();
+
+        allocator_ = rhs.allocator_;
+        ownAllocator_ = rhs.ownAllocator_;
+        stack_ = std::move(rhs.stack_);
+        parseResult_ = rhs.parseResult_;
+
+        rhs.allocator_ = 0;
+        rhs.ownAllocator_ = 0;
+        rhs.parseResult_ = ParseResult();
+
+        return *this;
+    }
+    template <unsigned parseFlags, typename SourceEncoding, typename InputStream>
+    GenericDocument& ParseStream(InputStream& is) {
+        ValueType::SetNull();
+        GenericReader<SourceEncoding, Encoding, StackAllocator> reader(&stack_.GetAllocator());
+        ClearStackOnExit scope(*this);
+        parseResult_ = reader.template Parse<parseFlags>(is, *this);
+        if (parseResult_) {
+            
+           (static_cast <bool> (
+           stack_.GetSize() == sizeof(ValueType)
+           ) ? void (0) : __assert_fail (
+           "stack_.GetSize() == sizeof(ValueType)"
+           , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1823, __extension__ __PRETTY_FUNCTION__))
+                                                                  ;
+            this->RawAssign(*stack_.template Pop<ValueType>(1));
+        }
+        return *this;
+    }
+
+
+
+
+
+
+
+    template <unsigned parseFlags, typename InputStream>
+    GenericDocument& ParseStream(InputStream& is) {
+        return ParseStream<parseFlags, Encoding, InputStream>(is);
+    }
+
+
+
+
+
+
+    template <typename InputStream>
+    GenericDocument& ParseStream(InputStream& is) {
+        return ParseStream<kParseDefaultFlags, Encoding, InputStream>(is);
+    }
+    template <unsigned parseFlags>
+    GenericDocument& ParseInsitu(Ch* str) {
+        GenericInsituStringStream<Encoding> s(str);
+        return ParseStream<parseFlags | kParseInsituFlag>(s);
+    }
+
+
+
+
+
+    GenericDocument& ParseInsitu(Ch* str) {
+        return ParseInsitu<kParseDefaultFlags>(str);
+    }
+    template <unsigned parseFlags, typename SourceEncoding>
+    GenericDocument& Parse(const Ch* str) {
+        
+       (static_cast <bool> (
+       !(parseFlags & kParseInsituFlag)
+       ) ? void (0) : __assert_fail (
+       "!(parseFlags & kParseInsituFlag)"
+       , "/home/csabaraduly/wk/hotblack/third_party/rapidjson/include/rapidjson/document.h", 1884, __extension__ __PRETTY_FUNCTION__))
+                                                         ;
+        GenericStringStream<SourceEncoding> s(str);
+        return ParseStream<parseFlags, SourceEncoding>(s);
+    }
+
+
+
+
+
+    template <unsigned parseFlags>
+    GenericDocument& Parse(const Ch* str) {
+        return Parse<parseFlags, Encoding>(str);
+    }
+
+
+
+
+    GenericDocument& Parse(const Ch* str) {
+        return Parse<kParseDefaultFlags>(str);
+    }
+
+
+
+
+
+
+    bool HasParseError() const { return parseResult_.IsError(); }
+
+
+    ParseErrorCode GetParseError() const { return parseResult_.Code(); }
+
+
+    size_t GetErrorOffset() const { return parseResult_.Offset(); }
+
+
+
+
+    Allocator& GetAllocator() { return *allocator_; }
+
+
+    size_t GetStackCapacity() const { return stack_.GetCapacity(); }
+
+private:
+
+    struct ClearStackOnExit {
+        explicit ClearStackOnExit(GenericDocument& d) : d_(d) {}
+        ~ClearStackOnExit() { d_.ClearStack(); }
+    private:
+        ClearStackOnExit(const ClearStackOnExit&);
+        ClearStackOnExit& operator=(const ClearStackOnExit&);
+        GenericDocument& d_;
+    };
+
+
+    template <typename,typename,typename> friend class GenericReader;
+    template <typename, typename> friend class GenericValue;
+
+
+    bool Null() { new (stack_.template Push<ValueType>()) ValueType(); return true; }
+    bool Bool(bool b) { new (stack_.template Push<ValueType>()) ValueType(b); return true; }
+    bool Int(int i) { new (stack_.template Push<ValueType>()) ValueType(i); return true; }
+    bool Uint(unsigned i) { new (stack_.template Push<ValueType>()) ValueType(i); return true; }
+    bool Int64(int64_t i) { new (stack_.template Push<ValueType>()) ValueType(i); return true; }
+    bool Uint64(uint64_t i) { new (stack_.template Push<ValueType>()) ValueType(i); return true; }
+    bool Double(double d) { new (stack_.template Push<ValueType>()) ValueType(d); return true; }
+
+    bool String(const Ch* str, SizeType length, bool copy) {
+        if (copy)
+            new (stack_.template Push<ValueType>()) ValueType(str, length, GetAllocator());
+        else
+            new (stack_.template Push<ValueType>()) ValueType(str, length);
+        return true;
+    }
+
+    bool StartObject() { new (stack_.template Push<ValueType>()) ValueType(kObjectType); return true; }
+
+    bool Key(const Ch* str, SizeType length, bool copy) { return String(str, length, copy); }
+
+    bool EndObject(SizeType memberCount) {
+        typename ValueType::Member* members = stack_.template Pop<typename ValueType::Member>(memberCount);
+        stack_.template Top<ValueType>()->SetObjectRaw(members, (SizeType)memberCount, GetAllocator());
+        return true;
+    }
+
+    bool StartArray() { new (stack_.template Push<ValueType>()) ValueType(kArrayType); return true; }
+
+    bool EndArray(SizeType elementCount) {
+        ValueType* elements = stack_.template Pop<ValueType>(elementCount);
+        stack_.template Top<ValueType>()->SetArrayRaw(elements, elementCount, GetAllocator());
+        return true;
+    }
+
+private:
+
+    GenericDocument(const GenericDocument&);
+
+    GenericDocument& operator=(const GenericDocument&);
+
+    void ClearStack() {
+        if (Allocator::kNeedFree)
+            while (stack_.GetSize() > 0)
+                (stack_.template Pop<ValueType>(1))->~ValueType();
+        else
+            stack_.Clear();
+        stack_.ShrinkToFit();
+    }
+
+    void Destroy() {
+        delete ownAllocator_;
+    }
+
+    static const size_t kDefaultStackCapacity = 1024;
+    Allocator* allocator_;
+    Allocator* ownAllocator_;
+    internal::Stack<StackAllocator> stack_;
+    ParseResult parseResult_;
+};
+
+
+typedef GenericDocument<UTF8<> > Document;
+
+
+template <typename Encoding, typename Allocator>
+template <typename SourceAllocator>
+inline
+GenericValue<Encoding,Allocator>::GenericValue(const GenericValue<Encoding,SourceAllocator>& rhs, Allocator& allocator)
+{
+    switch (rhs.GetType()) {
+    case kObjectType:
+    case kArrayType: {
+            GenericDocument<Encoding,Allocator> d(&allocator);
+            rhs.Accept(d);
+            RawAssign(*d.stack_.template Pop<GenericValue>(1));
+        }
+        break;
+    case kStringType:
+        if (rhs.flags_ == kConstStringFlag) {
+            flags_ = rhs.flags_;
+            data_ = *reinterpret_cast<const Data*>(&rhs.data_);
+        } else {
+            SetStringRaw(StringRef(rhs.GetString(), rhs.GetStringLength()), allocator);
+        }
+        break;
+    default:
+        flags_ = rhs.flags_;
+        data_ = *reinterpret_cast<const Data*>(&rhs.data_);
+    }
+}
+
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+       
+
+
+
+
+
+
+
+
+
+
+namespace std
+{
+
+  using ::max_align_t;
+}
+
+
+
+
+
+
+
+extern "C" {
+
+
+
+typedef __socklen_t socklen_t;
+extern int access (const char *__name, int __type) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+extern int euidaccess (const char *__name, int __type)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern int eaccess (const char *__name, int __type)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+extern int faccessat (int __fd, const char *__file, int __type, int __flag)
+     throw () __attribute__ ((__nonnull__ (2))) ;
+extern __off_t lseek (int __fd, __off_t __offset, int __whence) throw ();
+extern __off64_t lseek64 (int __fd, __off64_t __offset, int __whence)
+     throw ();
+
+
+
+
+
+
+extern int close (int __fd);
+
+
+
+
+
+
+extern ssize_t read (int __fd, void *__buf, size_t __nbytes) ;
+
+
+
+
+
+extern ssize_t write (int __fd, const void *__buf, size_t __n) ;
+extern ssize_t pread (int __fd, void *__buf, size_t __nbytes,
+        __off_t __offset) ;
+
+
+
+
+
+
+extern ssize_t pwrite (int __fd, const void *__buf, size_t __n,
+         __off_t __offset) ;
+extern ssize_t pread64 (int __fd, void *__buf, size_t __nbytes,
+   __off64_t __offset) ;
+
+
+extern ssize_t pwrite64 (int __fd, const void *__buf, size_t __n,
+    __off64_t __offset) ;
+
+
+
+
+
+
+
+extern int pipe (int __pipedes[2]) throw () ;
+
+
+
+
+extern int pipe2 (int __pipedes[2], int __flags) throw () ;
+extern unsigned int alarm (unsigned int __seconds) throw ();
+extern unsigned int sleep (unsigned int __seconds);
+
+
+
+
+
+
+
+extern __useconds_t ualarm (__useconds_t __value, __useconds_t __interval)
+     throw ();
+
+
+
+
+
+
+extern int usleep (__useconds_t __useconds);
+extern int pause (void);
+
+
+
+extern int chown (const char *__file, __uid_t __owner, __gid_t __group)
+     throw () __attribute__ ((__nonnull__ (1))) ;
+
+
+
+extern int fchown (int __fd, __uid_t __owner, __gid_t __group) throw () ;
+
+
+
+
+extern int lchown (const char *__file, __uid_t __owner, __gid_t __group)
+     throw () __attribute__ ((__nonnull__ (1))) ;
+
+
+
+
+
+
+extern int fchownat (int __fd, const char *__file, __uid_t __owner,
+       __gid_t __group, int __flag)
+     throw () __attribute__ ((__nonnull__ (2))) ;
+
+
+
+extern int chdir (const char *__path) throw () __attribute__ ((__nonnull__ (1))) ;
+
+
+
+extern int fchdir (int __fd) throw () ;
+extern char *getcwd (char *__buf, size_t __size) throw () ;
+
+
+
+
+
+extern char *get_current_dir_name (void) throw ();
+
+
+
+
+
+
+
+extern char *getwd (char *__buf)
+     throw () __attribute__ ((__nonnull__ (1))) __attribute__ ((__deprecated__)) ;
+
+
+
+
+extern int dup (int __fd) throw () ;
+
+
+extern int dup2 (int __fd, int __fd2) throw ();
+
+
+
+
+extern int dup3 (int __fd, int __fd2, int __flags) throw ();
+
+
+
+extern char **__environ;
+
+extern char **environ;
+
+
+
+
+
+extern int execve (const char *__path, char *const __argv[],
+     char *const __envp[]) throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+extern int fexecve (int __fd, char *const __argv[], char *const __envp[])
+     throw () __attribute__ ((__nonnull__ (2)));
+
+
+
+
+extern int execv (const char *__path, char *const __argv[])
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+extern int execle (const char *__path, const char *__arg, ...)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+extern int execl (const char *__path, const char *__arg, ...)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+extern int execvp (const char *__file, char *const __argv[])
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+extern int execlp (const char *__file, const char *__arg, ...)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+extern int execvpe (const char *__file, char *const __argv[],
+      char *const __envp[])
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+
+
+extern int nice (int __inc) throw () ;
+
+
+
+
+extern void _exit (int __status) __attribute__ ((__noreturn__));
+
+
+
+
+
+enum
+  {
+    _PC_LINK_MAX,
+
+    _PC_MAX_CANON,
+
+    _PC_MAX_INPUT,
+
+    _PC_NAME_MAX,
+
+    _PC_PATH_MAX,
+
+    _PC_PIPE_BUF,
+
+    _PC_CHOWN_RESTRICTED,
+
+    _PC_NO_TRUNC,
+
+    _PC_VDISABLE,
+
+    _PC_SYNC_IO,
+
+    _PC_ASYNC_IO,
+
+    _PC_PRIO_IO,
+
+    _PC_SOCK_MAXBUF,
+
+    _PC_FILESIZEBITS,
+
+    _PC_REC_INCR_XFER_SIZE,
+
+    _PC_REC_MAX_XFER_SIZE,
+
+    _PC_REC_MIN_XFER_SIZE,
+
+    _PC_REC_XFER_ALIGN,
+
+    _PC_ALLOC_SIZE_MIN,
+
+    _PC_SYMLINK_MAX,
+
+    _PC_2_SYMLINKS
+
+  };
+
+
+enum
+  {
+    _SC_ARG_MAX,
+
+    _SC_CHILD_MAX,
+
+    _SC_CLK_TCK,
+
+    _SC_NGROUPS_MAX,
+
+    _SC_OPEN_MAX,
+
+    _SC_STREAM_MAX,
+
+    _SC_TZNAME_MAX,
+
+    _SC_JOB_CONTROL,
+
+    _SC_SAVED_IDS,
+
+    _SC_REALTIME_SIGNALS,
+
+    _SC_PRIORITY_SCHEDULING,
+
+    _SC_TIMERS,
+
+    _SC_ASYNCHRONOUS_IO,
+
+    _SC_PRIORITIZED_IO,
+
+    _SC_SYNCHRONIZED_IO,
+
+    _SC_FSYNC,
+
+    _SC_MAPPED_FILES,
+
+    _SC_MEMLOCK,
+
+    _SC_MEMLOCK_RANGE,
+
+    _SC_MEMORY_PROTECTION,
+
+    _SC_MESSAGE_PASSING,
+
+    _SC_SEMAPHORES,
+
+    _SC_SHARED_MEMORY_OBJECTS,
+
+    _SC_AIO_LISTIO_MAX,
+
+    _SC_AIO_MAX,
+
+    _SC_AIO_PRIO_DELTA_MAX,
+
+    _SC_DELAYTIMER_MAX,
+
+    _SC_MQ_OPEN_MAX,
+
+    _SC_MQ_PRIO_MAX,
+
+    _SC_VERSION,
+
+    _SC_PAGESIZE,
+
+
+    _SC_RTSIG_MAX,
+
+    _SC_SEM_NSEMS_MAX,
+
+    _SC_SEM_VALUE_MAX,
+
+    _SC_SIGQUEUE_MAX,
+
+    _SC_TIMER_MAX,
+
+
+
+
+    _SC_BC_BASE_MAX,
+
+    _SC_BC_DIM_MAX,
+
+    _SC_BC_SCALE_MAX,
+
+    _SC_BC_STRING_MAX,
+
+    _SC_COLL_WEIGHTS_MAX,
+
+    _SC_EQUIV_CLASS_MAX,
+
+    _SC_EXPR_NEST_MAX,
+
+    _SC_LINE_MAX,
+
+    _SC_RE_DUP_MAX,
+
+    _SC_CHARCLASS_NAME_MAX,
+
+
+    _SC_2_VERSION,
+
+    _SC_2_C_BIND,
+
+    _SC_2_C_DEV,
+
+    _SC_2_FORT_DEV,
+
+    _SC_2_FORT_RUN,
+
+    _SC_2_SW_DEV,
+
+    _SC_2_LOCALEDEF,
+
+
+    _SC_PII,
+
+    _SC_PII_XTI,
+
+    _SC_PII_SOCKET,
+
+    _SC_PII_INTERNET,
+
+    _SC_PII_OSI,
+
+    _SC_POLL,
+
+    _SC_SELECT,
+
+    _SC_UIO_MAXIOV,
+
+    _SC_IOV_MAX = _SC_UIO_MAXIOV,
+
+    _SC_PII_INTERNET_STREAM,
+
+    _SC_PII_INTERNET_DGRAM,
+
+    _SC_PII_OSI_COTS,
+
+    _SC_PII_OSI_CLTS,
+
+    _SC_PII_OSI_M,
+
+    _SC_T_IOV_MAX,
+
+
+
+    _SC_THREADS,
+
+    _SC_THREAD_SAFE_FUNCTIONS,
+
+    _SC_GETGR_R_SIZE_MAX,
+
+    _SC_GETPW_R_SIZE_MAX,
+
+    _SC_LOGIN_NAME_MAX,
+
+    _SC_TTY_NAME_MAX,
+
+    _SC_THREAD_DESTRUCTOR_ITERATIONS,
+
+    _SC_THREAD_KEYS_MAX,
+
+    _SC_THREAD_STACK_MIN,
+
+    _SC_THREAD_THREADS_MAX,
+
+    _SC_THREAD_ATTR_STACKADDR,
+
+    _SC_THREAD_ATTR_STACKSIZE,
+
+    _SC_THREAD_PRIORITY_SCHEDULING,
+
+    _SC_THREAD_PRIO_INHERIT,
+
+    _SC_THREAD_PRIO_PROTECT,
+
+    _SC_THREAD_PROCESS_SHARED,
+
+
+    _SC_NPROCESSORS_CONF,
+
+    _SC_NPROCESSORS_ONLN,
+
+    _SC_PHYS_PAGES,
+
+    _SC_AVPHYS_PAGES,
+
+    _SC_ATEXIT_MAX,
+
+    _SC_PASS_MAX,
+
+
+    _SC_XOPEN_VERSION,
+
+    _SC_XOPEN_XCU_VERSION,
+
+    _SC_XOPEN_UNIX,
+
+    _SC_XOPEN_CRYPT,
+
+    _SC_XOPEN_ENH_I18N,
+
+    _SC_XOPEN_SHM,
+
+
+    _SC_2_CHAR_TERM,
+
+    _SC_2_C_VERSION,
+
+    _SC_2_UPE,
+
+
+    _SC_XOPEN_XPG2,
+
+    _SC_XOPEN_XPG3,
+
+    _SC_XOPEN_XPG4,
+
+
+    _SC_CHAR_BIT,
+
+    _SC_CHAR_MAX,
+
+    _SC_CHAR_MIN,
+
+    _SC_INT_MAX,
+
+    _SC_INT_MIN,
+
+    _SC_LONG_BIT,
+
+    _SC_WORD_BIT,
+
+    _SC_MB_LEN_MAX,
+
+    _SC_NZERO,
+
+    _SC_SSIZE_MAX,
+
+    _SC_SCHAR_MAX,
+
+    _SC_SCHAR_MIN,
+
+    _SC_SHRT_MAX,
+
+    _SC_SHRT_MIN,
+
+    _SC_UCHAR_MAX,
+
+    _SC_UINT_MAX,
+
+    _SC_ULONG_MAX,
+
+    _SC_USHRT_MAX,
+
+
+    _SC_NL_ARGMAX,
+
+    _SC_NL_LANGMAX,
+
+    _SC_NL_MSGMAX,
+
+    _SC_NL_NMAX,
+
+    _SC_NL_SETMAX,
+
+    _SC_NL_TEXTMAX,
+
+
+    _SC_XBS5_ILP32_OFF32,
+
+    _SC_XBS5_ILP32_OFFBIG,
+
+    _SC_XBS5_LP64_OFF64,
+
+    _SC_XBS5_LPBIG_OFFBIG,
+
+
+    _SC_XOPEN_LEGACY,
+
+    _SC_XOPEN_REALTIME,
+
+    _SC_XOPEN_REALTIME_THREADS,
+
+
+    _SC_ADVISORY_INFO,
+
+    _SC_BARRIERS,
+
+    _SC_BASE,
+
+    _SC_C_LANG_SUPPORT,
+
+    _SC_C_LANG_SUPPORT_R,
+
+    _SC_CLOCK_SELECTION,
+
+    _SC_CPUTIME,
+
+    _SC_THREAD_CPUTIME,
+
+    _SC_DEVICE_IO,
+
+    _SC_DEVICE_SPECIFIC,
+
+    _SC_DEVICE_SPECIFIC_R,
+
+    _SC_FD_MGMT,
+
+    _SC_FIFO,
+
+    _SC_PIPE,
+
+    _SC_FILE_ATTRIBUTES,
+
+    _SC_FILE_LOCKING,
+
+    _SC_FILE_SYSTEM,
+
+    _SC_MONOTONIC_CLOCK,
+
+    _SC_MULTI_PROCESS,
+
+    _SC_SINGLE_PROCESS,
+
+    _SC_NETWORKING,
+
+    _SC_READER_WRITER_LOCKS,
+
+    _SC_SPIN_LOCKS,
+
+    _SC_REGEXP,
+
+    _SC_REGEX_VERSION,
+
+    _SC_SHELL,
+
+    _SC_SIGNALS,
+
+    _SC_SPAWN,
+
+    _SC_SPORADIC_SERVER,
+
+    _SC_THREAD_SPORADIC_SERVER,
+
+    _SC_SYSTEM_DATABASE,
+
+    _SC_SYSTEM_DATABASE_R,
+
+    _SC_TIMEOUTS,
+
+    _SC_TYPED_MEMORY_OBJECTS,
+
+    _SC_USER_GROUPS,
+
+    _SC_USER_GROUPS_R,
+
+    _SC_2_PBS,
+
+    _SC_2_PBS_ACCOUNTING,
+
+    _SC_2_PBS_LOCATE,
+
+    _SC_2_PBS_MESSAGE,
+
+    _SC_2_PBS_TRACK,
+
+    _SC_SYMLOOP_MAX,
+
+    _SC_STREAMS,
+
+    _SC_2_PBS_CHECKPOINT,
+
+
+    _SC_V6_ILP32_OFF32,
+
+    _SC_V6_ILP32_OFFBIG,
+
+    _SC_V6_LP64_OFF64,
+
+    _SC_V6_LPBIG_OFFBIG,
+
+
+    _SC_HOST_NAME_MAX,
+
+    _SC_TRACE,
+
+    _SC_TRACE_EVENT_FILTER,
+
+    _SC_TRACE_INHERIT,
+
+    _SC_TRACE_LOG,
+
+
+    _SC_LEVEL1_ICACHE_SIZE,
+
+    _SC_LEVEL1_ICACHE_ASSOC,
+
+    _SC_LEVEL1_ICACHE_LINESIZE,
+
+    _SC_LEVEL1_DCACHE_SIZE,
+
+    _SC_LEVEL1_DCACHE_ASSOC,
+
+    _SC_LEVEL1_DCACHE_LINESIZE,
+
+    _SC_LEVEL2_CACHE_SIZE,
+
+    _SC_LEVEL2_CACHE_ASSOC,
+
+    _SC_LEVEL2_CACHE_LINESIZE,
+
+    _SC_LEVEL3_CACHE_SIZE,
+
+    _SC_LEVEL3_CACHE_ASSOC,
+
+    _SC_LEVEL3_CACHE_LINESIZE,
+
+    _SC_LEVEL4_CACHE_SIZE,
+
+    _SC_LEVEL4_CACHE_ASSOC,
+
+    _SC_LEVEL4_CACHE_LINESIZE,
+
+
+
+    _SC_IPV6 = _SC_LEVEL1_ICACHE_SIZE + 50,
+
+    _SC_RAW_SOCKETS,
+
+
+    _SC_V7_ILP32_OFF32,
+
+    _SC_V7_ILP32_OFFBIG,
+
+    _SC_V7_LP64_OFF64,
+
+    _SC_V7_LPBIG_OFFBIG,
+
+
+    _SC_SS_REPL_MAX,
+
+
+    _SC_TRACE_EVENT_NAME_MAX,
+
+    _SC_TRACE_NAME_MAX,
+
+    _SC_TRACE_SYS_MAX,
+
+    _SC_TRACE_USER_EVENT_MAX,
+
+
+    _SC_XOPEN_STREAMS,
+
+
+    _SC_THREAD_ROBUST_PRIO_INHERIT,
+
+    _SC_THREAD_ROBUST_PRIO_PROTECT
+
+  };
+
+
+enum
+  {
+    _CS_PATH,
+
+
+    _CS_V6_WIDTH_RESTRICTED_ENVS,
+
+
+
+    _CS_GNU_LIBC_VERSION,
+
+    _CS_GNU_LIBPTHREAD_VERSION,
+
+
+    _CS_V5_WIDTH_RESTRICTED_ENVS,
+
+
+
+    _CS_V7_WIDTH_RESTRICTED_ENVS,
+
+
+
+    _CS_LFS_CFLAGS = 1000,
+
+    _CS_LFS_LDFLAGS,
+
+    _CS_LFS_LIBS,
+
+    _CS_LFS_LINTFLAGS,
+
+    _CS_LFS64_CFLAGS,
+
+    _CS_LFS64_LDFLAGS,
+
+    _CS_LFS64_LIBS,
+
+    _CS_LFS64_LINTFLAGS,
+
+
+    _CS_XBS5_ILP32_OFF32_CFLAGS = 1100,
+
+    _CS_XBS5_ILP32_OFF32_LDFLAGS,
+
+    _CS_XBS5_ILP32_OFF32_LIBS,
+
+    _CS_XBS5_ILP32_OFF32_LINTFLAGS,
+
+    _CS_XBS5_ILP32_OFFBIG_CFLAGS,
+
+    _CS_XBS5_ILP32_OFFBIG_LDFLAGS,
+
+    _CS_XBS5_ILP32_OFFBIG_LIBS,
+
+    _CS_XBS5_ILP32_OFFBIG_LINTFLAGS,
+
+    _CS_XBS5_LP64_OFF64_CFLAGS,
+
+    _CS_XBS5_LP64_OFF64_LDFLAGS,
+
+    _CS_XBS5_LP64_OFF64_LIBS,
+
+    _CS_XBS5_LP64_OFF64_LINTFLAGS,
+
+    _CS_XBS5_LPBIG_OFFBIG_CFLAGS,
+
+    _CS_XBS5_LPBIG_OFFBIG_LDFLAGS,
+
+    _CS_XBS5_LPBIG_OFFBIG_LIBS,
+
+    _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS,
+
+
+    _CS_POSIX_V6_ILP32_OFF32_CFLAGS,
+
+    _CS_POSIX_V6_ILP32_OFF32_LDFLAGS,
+
+    _CS_POSIX_V6_ILP32_OFF32_LIBS,
+
+    _CS_POSIX_V6_ILP32_OFF32_LINTFLAGS,
+
+    _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS,
+
+    _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS,
+
+    _CS_POSIX_V6_ILP32_OFFBIG_LIBS,
+
+    _CS_POSIX_V6_ILP32_OFFBIG_LINTFLAGS,
+
+    _CS_POSIX_V6_LP64_OFF64_CFLAGS,
+
+    _CS_POSIX_V6_LP64_OFF64_LDFLAGS,
+
+    _CS_POSIX_V6_LP64_OFF64_LIBS,
+
+    _CS_POSIX_V6_LP64_OFF64_LINTFLAGS,
+
+    _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS,
+
+    _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS,
+
+    _CS_POSIX_V6_LPBIG_OFFBIG_LIBS,
+
+    _CS_POSIX_V6_LPBIG_OFFBIG_LINTFLAGS,
+
+
+    _CS_POSIX_V7_ILP32_OFF32_CFLAGS,
+
+    _CS_POSIX_V7_ILP32_OFF32_LDFLAGS,
+
+    _CS_POSIX_V7_ILP32_OFF32_LIBS,
+
+    _CS_POSIX_V7_ILP32_OFF32_LINTFLAGS,
+
+    _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS,
+
+    _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS,
+
+    _CS_POSIX_V7_ILP32_OFFBIG_LIBS,
+
+    _CS_POSIX_V7_ILP32_OFFBIG_LINTFLAGS,
+
+    _CS_POSIX_V7_LP64_OFF64_CFLAGS,
+
+    _CS_POSIX_V7_LP64_OFF64_LDFLAGS,
+
+    _CS_POSIX_V7_LP64_OFF64_LIBS,
+
+    _CS_POSIX_V7_LP64_OFF64_LINTFLAGS,
+
+    _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS,
+
+    _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS,
+
+    _CS_POSIX_V7_LPBIG_OFFBIG_LIBS,
+
+    _CS_POSIX_V7_LPBIG_OFFBIG_LINTFLAGS,
+
+
+    _CS_V6_ENV,
+
+    _CS_V7_ENV
+
+  };
+
+
+extern long int pathconf (const char *__path, int __name)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+extern long int fpathconf (int __fd, int __name) throw ();
+
+
+extern long int sysconf (int __name) throw ();
+
+
+
+extern size_t confstr (int __name, char *__buf, size_t __len) throw ();
+
+
+
+
+extern __pid_t getpid (void) throw ();
+
+
+extern __pid_t getppid (void) throw ();
+
+
+extern __pid_t getpgrp (void) throw ();
+
+
+extern __pid_t __getpgid (__pid_t __pid) throw ();
+
+extern __pid_t getpgid (__pid_t __pid) throw ();
+
+
+
+
+
+
+extern int setpgid (__pid_t __pid, __pid_t __pgid) throw ();
+extern int setpgrp (void) throw ();
+
+
+
+
+
+
+extern __pid_t setsid (void) throw ();
+
+
+
+extern __pid_t getsid (__pid_t __pid) throw ();
+
+
+
+extern __uid_t getuid (void) throw ();
+
+
+extern __uid_t geteuid (void) throw ();
+
+
+extern __gid_t getgid (void) throw ();
+
+
+extern __gid_t getegid (void) throw ();
+
+
+
+
+extern int getgroups (int __size, __gid_t __list[]) throw () ;
+
+
+
+extern int group_member (__gid_t __gid) throw ();
+
+
+
+
+
+
+extern int setuid (__uid_t __uid) throw () ;
+
+
+
+
+extern int setreuid (__uid_t __ruid, __uid_t __euid) throw () ;
+
+
+
+
+extern int seteuid (__uid_t __uid) throw () ;
+
+
+
+
+
+
+extern int setgid (__gid_t __gid) throw () ;
+
+
+
+
+extern int setregid (__gid_t __rgid, __gid_t __egid) throw () ;
+
+
+
+
+extern int setegid (__gid_t __gid) throw () ;
+
+
+
+
+
+extern int getresuid (__uid_t *__ruid, __uid_t *__euid, __uid_t *__suid)
+     throw ();
+
+
+
+extern int getresgid (__gid_t *__rgid, __gid_t *__egid, __gid_t *__sgid)
+     throw ();
+
+
+
+extern int setresuid (__uid_t __ruid, __uid_t __euid, __uid_t __suid)
+     throw () ;
+
+
+
+extern int setresgid (__gid_t __rgid, __gid_t __egid, __gid_t __sgid)
+     throw () ;
+
+
+
+
+
+
+extern __pid_t fork (void) throw ();
+
+
+
+
+
+
+
+extern __pid_t vfork (void) throw ();
+
+
+
+
+
+extern char *ttyname (int __fd) throw ();
+
+
+
+extern int ttyname_r (int __fd, char *__buf, size_t __buflen)
+     throw () __attribute__ ((__nonnull__ (2))) ;
+
+
+
+extern int isatty (int __fd) throw ();
+
+
+
+
+extern int ttyslot (void) throw ();
+
+
+
+
+extern int link (const char *__from, const char *__to)
+     throw () __attribute__ ((__nonnull__ (1, 2))) ;
+
+
+
+
+extern int linkat (int __fromfd, const char *__from, int __tofd,
+     const char *__to, int __flags)
+     throw () __attribute__ ((__nonnull__ (2, 4))) ;
+
+
+
+
+extern int symlink (const char *__from, const char *__to)
+     throw () __attribute__ ((__nonnull__ (1, 2))) ;
+
+
+
+
+extern ssize_t readlink (const char *__restrict __path,
+    char *__restrict __buf, size_t __len)
+     throw () __attribute__ ((__nonnull__ (1, 2))) ;
+
+
+
+
+extern int symlinkat (const char *__from, int __tofd,
+        const char *__to) throw () __attribute__ ((__nonnull__ (1, 3))) ;
+
+
+extern ssize_t readlinkat (int __fd, const char *__restrict __path,
+      char *__restrict __buf, size_t __len)
+     throw () __attribute__ ((__nonnull__ (2, 3))) ;
+
+
+
+extern int unlink (const char *__name) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern int unlinkat (int __fd, const char *__name, int __flag)
+     throw () __attribute__ ((__nonnull__ (2)));
+
+
+
+extern int rmdir (const char *__path) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+extern __pid_t tcgetpgrp (int __fd) throw ();
+
+
+extern int tcsetpgrp (int __fd, __pid_t __pgrp_id) throw ();
+
+
+
+
+
+
+extern char *getlogin (void);
+
+
+
+
+
+
+
+extern int getlogin_r (char *__name, size_t __name_len) __attribute__ ((__nonnull__ (1)));
+
+
+
+
+extern int setlogin (const char *__name) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+
+extern "C" {
+
+
+
+
+
+
+
+extern char *optarg;
+extern int optind;
+
+
+
+
+extern int opterr;
+
+
+
+extern int optopt;
+extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
+       throw () __attribute__ ((__nonnull__ (2, 3)));
+
+}
+
+extern "C" {
+}
+
+
+
+
+
+
+
+extern int gethostname (char *__name, size_t __len) throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+extern int sethostname (const char *__name, size_t __len)
+     throw () __attribute__ ((__nonnull__ (1))) ;
+
+
+
+extern int sethostid (long int __id) throw () ;
+
+
+
+
+
+extern int getdomainname (char *__name, size_t __len)
+     throw () __attribute__ ((__nonnull__ (1))) ;
+extern int setdomainname (const char *__name, size_t __len)
+     throw () __attribute__ ((__nonnull__ (1))) ;
+
+
+
+
+
+extern int vhangup (void) throw ();
+
+
+extern int revoke (const char *__file) throw () __attribute__ ((__nonnull__ (1))) ;
+
+
+
+
+
+
+
+extern int profil (unsigned short int *__sample_buffer, size_t __size,
+     size_t __offset, unsigned int __scale)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+extern int acct (const char *__name) throw ();
+
+
+
+extern char *getusershell (void) throw ();
+extern void endusershell (void) throw ();
+extern void setusershell (void) throw ();
+
+
+
+
+
+extern int daemon (int __nochdir, int __noclose) throw () ;
+
+
+
+
+
+
+extern int chroot (const char *__path) throw () __attribute__ ((__nonnull__ (1))) ;
+
+
+
+extern char *getpass (const char *__prompt) __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+
+extern int fsync (int __fd);
+
+
+
+
+
+extern int syncfs (int __fd) throw ();
+
+
+
+
+
+
+extern long int gethostid (void);
+
+
+extern void sync (void) throw ();
+
+
+
+
+
+extern int getpagesize (void) throw () __attribute__ ((__const__));
+
+
+
+
+extern int getdtablesize (void) throw ();
+extern int truncate (const char *__file, __off_t __length)
+     throw () __attribute__ ((__nonnull__ (1))) ;
+extern int truncate64 (const char *__file, __off64_t __length)
+     throw () __attribute__ ((__nonnull__ (1))) ;
+extern int ftruncate (int __fd, __off_t __length) throw () ;
+extern int ftruncate64 (int __fd, __off64_t __length) throw () ;
+extern int brk (void *__addr) throw () ;
+
+
+
+
+
+extern void *sbrk (intptr_t __delta) throw ();
+extern long int syscall (long int __sysno, ...) throw ();
+extern int lockf (int __fd, int __cmd, __off_t __len) ;
+extern int lockf64 (int __fd, int __cmd, __off64_t __len) ;
+extern int fdatasync (int __fildes);
+
+
+
+
+
+
+
+extern char *crypt (const char *__key, const char *__salt)
+     throw () __attribute__ ((__nonnull__ (1, 2)));
+
+
+
+extern void encrypt (char *__glibc_block, int __edflag)
+     throw () __attribute__ ((__nonnull__ (1)));
+
+
+
+
+
+
+extern void swab (const void *__restrict __from, void *__restrict __to,
+    ssize_t __n) throw () __attribute__ ((__nonnull__ (1, 2)));
+int getentropy (void *__buffer, size_t __length) ;
+
+
+
+
+
+
+
+}
+
+
+
+
+
+
+
+       
+
+
+
+       
+namespace boost{
+
+   __extension__ typedef long long long_long_type;
+   __extension__ typedef unsigned long long ulong_long_type;
+
+
+
+
+}
+
+
+
+namespace boost{
+
+   __extension__ typedef __int128 int128_type;
+   __extension__ typedef unsigned __int128 uint128_type;
+
+
+
+
+}
+
+
+
+namespace boost {
+
+   __extension__ typedef __float128 float128_type;
+
+
+
+}
+
+
+       
+
+
+namespace boost
+{
+
+namespace detail
+{
+
+template<class T> struct addr_impl_ref
+{
+    T & v_;
+
+    inline __attribute__ ((__always_inline__)) addr_impl_ref( T & v ): v_( v ) {}
+    inline __attribute__ ((__always_inline__)) operator T& () const { return v_; }
+
+private:
+    addr_impl_ref & operator=(const addr_impl_ref &);
+};
+
+template<class T> struct addressof_impl
+{
+    static inline __attribute__ ((__always_inline__)) T * f( T & v, long )
+    {
+        return reinterpret_cast<T*>(
+            &const_cast<char&>(reinterpret_cast<const volatile char &>(v)));
+    }
+
+    static inline __attribute__ ((__always_inline__)) T * f( T * v, int )
+    {
+        return v;
+    }
+};
+    typedef std::nullptr_t addr_nullptr_t;
+
+
+
+template<> struct addressof_impl< addr_nullptr_t >
+{
+    typedef addr_nullptr_t T;
+
+    static inline __attribute__ ((__always_inline__)) T * f( T & v, int )
+    {
+        return &v;
+    }
+};
+
+template<> struct addressof_impl< addr_nullptr_t const >
+{
+    typedef addr_nullptr_t const T;
+
+    static inline __attribute__ ((__always_inline__)) T * f( T & v, int )
+    {
+        return &v;
+    }
+};
+
+template<> struct addressof_impl< addr_nullptr_t volatile >
+{
+    typedef addr_nullptr_t volatile T;
+
+    static inline __attribute__ ((__always_inline__)) T * f( T & v, int )
+    {
+        return &v;
+    }
+};
+
+template<> struct addressof_impl< addr_nullptr_t const volatile >
+{
+    typedef addr_nullptr_t const volatile T;
+
+    static inline __attribute__ ((__always_inline__)) T * f( T & v, int )
+    {
+        return &v;
+    }
+};
+
+
+
+}
+
+template<class T>
+inline __attribute__ ((__always_inline__))
+T * addressof( T & v )
+{
+
+
+
+
+
+
+    return boost::detail::addressof_impl<T>::f( boost::detail::addr_impl_ref<T>( v ), 0 );
+
+
+}
+}
+namespace boost
+{
+  template<typename T, typename R=void>
+  struct enable_if_has_type
+  {
+    typedef R type;
+  };
+
+  template <bool B, class T = void>
+  struct enable_if_c {
+    typedef T type;
+  };
+
+  template <class T>
+  struct enable_if_c<false, T> {};
+
+  template <class Cond, class T = void>
+  struct enable_if : public enable_if_c<Cond::value, T> {};
+
+  template <bool B, class T>
+  struct lazy_enable_if_c {
+    typedef typename T::type type;
+  };
+
+  template <class T>
+  struct lazy_enable_if_c<false, T> {};
+
+  template <class Cond, class T>
+  struct lazy_enable_if : public lazy_enable_if_c<Cond::value, T> {};
+
+
+  template <bool B, class T = void>
+  struct disable_if_c {
+    typedef T type;
+  };
+
+  template <class T>
+  struct disable_if_c<true, T> {};
+
+  template <class Cond, class T = void>
+  struct disable_if : public disable_if_c<Cond::value, T> {};
+
+  template <bool B, class T>
+  struct lazy_disable_if_c {
+    typedef typename T::type type;
+  };
+
+  template <class T>
+  struct lazy_disable_if_c<true, T> {};
+
+  template <class Cond, class T>
+  struct lazy_disable_if : public lazy_disable_if_c<Cond::value, T> {};
+
+}
+       
+       
+
+
+
+       
+       
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _IIter, typename _Predicate>
+    bool
+    all_of(_IIter, _IIter, _Predicate);
+
+  template<typename _IIter, typename _Predicate>
+    bool
+    any_of(_IIter, _IIter, _Predicate);
+
+
+  template<typename _FIter, typename _Tp>
+    bool
+    binary_search(_FIter, _FIter, const _Tp&);
+
+  template<typename _FIter, typename _Tp, typename _Compare>
+    bool
+    binary_search(_FIter, _FIter, const _Tp&, _Compare);
+  template<typename _IIter, typename _OIter>
+    _OIter
+    copy(_IIter, _IIter, _OIter);
+
+  template<typename _BIter1, typename _BIter2>
+    _BIter2
+    copy_backward(_BIter1, _BIter1, _BIter2);
+
+
+  template<typename _IIter, typename _OIter, typename _Predicate>
+    _OIter
+    copy_if(_IIter, _IIter, _OIter, _Predicate);
+
+  template<typename _IIter, typename _Size, typename _OIter>
+    _OIter
+    copy_n(_IIter, _Size, _OIter);
+
+
+
+
+
+  template<typename _FIter, typename _Tp>
+    pair<_FIter, _FIter>
+    equal_range(_FIter, _FIter, const _Tp&);
+
+  template<typename _FIter, typename _Tp, typename _Compare>
+    pair<_FIter, _FIter>
+    equal_range(_FIter, _FIter, const _Tp&, _Compare);
+
+  template<typename _FIter, typename _Tp>
+    void
+    fill(_FIter, _FIter, const _Tp&);
+
+  template<typename _OIter, typename _Size, typename _Tp>
+    _OIter
+    fill_n(_OIter, _Size, const _Tp&);
+
+
+
+  template<typename _FIter1, typename _FIter2>
+    _FIter1
+    find_end(_FIter1, _FIter1, _FIter2, _FIter2);
+
+  template<typename _FIter1, typename _FIter2, typename _BinaryPredicate>
+    _FIter1
+    find_end(_FIter1, _FIter1, _FIter2, _FIter2, _BinaryPredicate);
+
+
+
+
+
+  template<typename _IIter, typename _Predicate>
+    _IIter
+    find_if_not(_IIter, _IIter, _Predicate);
+
+
+
+
+
+
+  template<typename _IIter1, typename _IIter2>
+    bool
+    includes(_IIter1, _IIter1, _IIter2, _IIter2);
+
+  template<typename _IIter1, typename _IIter2, typename _Compare>
+    bool
+    includes(_IIter1, _IIter1, _IIter2, _IIter2, _Compare);
+
+  template<typename _BIter>
+    void
+    inplace_merge(_BIter, _BIter, _BIter);
+
+  template<typename _BIter, typename _Compare>
+    void
+    inplace_merge(_BIter, _BIter, _BIter, _Compare);
+
+
+  template<typename _RAIter>
+    bool
+    is_heap(_RAIter, _RAIter);
+
+  template<typename _RAIter, typename _Compare>
+    bool
+    is_heap(_RAIter, _RAIter, _Compare);
+
+  template<typename _RAIter>
+    _RAIter
+    is_heap_until(_RAIter, _RAIter);
+
+  template<typename _RAIter, typename _Compare>
+    _RAIter
+    is_heap_until(_RAIter, _RAIter, _Compare);
+
+  template<typename _IIter, typename _Predicate>
+    bool
+    is_partitioned(_IIter, _IIter, _Predicate);
+
+  template<typename _FIter1, typename _FIter2>
+    bool
+    is_permutation(_FIter1, _FIter1, _FIter2);
+
+  template<typename _FIter1, typename _FIter2,
+    typename _BinaryPredicate>
+    bool
+    is_permutation(_FIter1, _FIter1, _FIter2, _BinaryPredicate);
+
+  template<typename _FIter>
+    bool
+    is_sorted(_FIter, _FIter);
+
+  template<typename _FIter, typename _Compare>
+    bool
+    is_sorted(_FIter, _FIter, _Compare);
+
+  template<typename _FIter>
+    _FIter
+    is_sorted_until(_FIter, _FIter);
+
+  template<typename _FIter, typename _Compare>
+    _FIter
+    is_sorted_until(_FIter, _FIter, _Compare);
+
+
+  template<typename _FIter1, typename _FIter2>
+    void
+    iter_swap(_FIter1, _FIter2);
+
+  template<typename _FIter, typename _Tp>
+    _FIter
+    lower_bound(_FIter, _FIter, const _Tp&);
+
+  template<typename _FIter, typename _Tp, typename _Compare>
+    _FIter
+    lower_bound(_FIter, _FIter, const _Tp&, _Compare);
+
+  template<typename _RAIter>
+    void
+    make_heap(_RAIter, _RAIter);
+
+  template<typename _RAIter, typename _Compare>
+    void
+    make_heap(_RAIter, _RAIter, _Compare);
+
+  template<typename _Tp>
+    constexpr
+    const _Tp&
+    max(const _Tp&, const _Tp&);
+
+  template<typename _Tp, typename _Compare>
+    constexpr
+    const _Tp&
+    max(const _Tp&, const _Tp&, _Compare);
+
+
+
+
+  template<typename _Tp>
+    constexpr
+    const _Tp&
+    min(const _Tp&, const _Tp&);
+
+  template<typename _Tp, typename _Compare>
+    constexpr
+    const _Tp&
+    min(const _Tp&, const _Tp&, _Compare);
+
+
+
+
+  template<typename _Tp>
+    constexpr
+    pair<const _Tp&, const _Tp&>
+    minmax(const _Tp&, const _Tp&);
+
+  template<typename _Tp, typename _Compare>
+    constexpr
+    pair<const _Tp&, const _Tp&>
+    minmax(const _Tp&, const _Tp&, _Compare);
+
+  template<typename _FIter>
+    constexpr
+    pair<_FIter, _FIter>
+    minmax_element(_FIter, _FIter);
+
+  template<typename _FIter, typename _Compare>
+    constexpr
+    pair<_FIter, _FIter>
+    minmax_element(_FIter, _FIter, _Compare);
+
+  template<typename _Tp>
+    constexpr
+    _Tp
+    min(initializer_list<_Tp>);
+
+  template<typename _Tp, typename _Compare>
+    constexpr
+    _Tp
+    min(initializer_list<_Tp>, _Compare);
+
+  template<typename _Tp>
+    constexpr
+    _Tp
+    max(initializer_list<_Tp>);
+
+  template<typename _Tp, typename _Compare>
+    constexpr
+    _Tp
+    max(initializer_list<_Tp>, _Compare);
+
+  template<typename _Tp>
+    constexpr
+    pair<_Tp, _Tp>
+    minmax(initializer_list<_Tp>);
+
+  template<typename _Tp, typename _Compare>
+    constexpr
+    pair<_Tp, _Tp>
+    minmax(initializer_list<_Tp>, _Compare);
+
+
+
+
+  template<typename _BIter>
+    bool
+    next_permutation(_BIter, _BIter);
+
+  template<typename _BIter, typename _Compare>
+    bool
+    next_permutation(_BIter, _BIter, _Compare);
+
+
+  template<typename _IIter, typename _Predicate>
+    bool
+    none_of(_IIter, _IIter, _Predicate);
+
+
+
+
+
+  template<typename _IIter, typename _RAIter>
+    _RAIter
+    partial_sort_copy(_IIter, _IIter, _RAIter, _RAIter);
+
+  template<typename _IIter, typename _RAIter, typename _Compare>
+    _RAIter
+    partial_sort_copy(_IIter, _IIter, _RAIter, _RAIter, _Compare);
+
+
+
+
+  template<typename _IIter, typename _OIter1,
+    typename _OIter2, typename _Predicate>
+    pair<_OIter1, _OIter2>
+    partition_copy(_IIter, _IIter, _OIter1, _OIter2, _Predicate);
+
+  template<typename _FIter, typename _Predicate>
+    _FIter
+    partition_point(_FIter, _FIter, _Predicate);
+
+
+  template<typename _RAIter>
+    void
+    pop_heap(_RAIter, _RAIter);
+
+  template<typename _RAIter, typename _Compare>
+    void
+    pop_heap(_RAIter, _RAIter, _Compare);
+
+  template<typename _BIter>
+    bool
+    prev_permutation(_BIter, _BIter);
+
+  template<typename _BIter, typename _Compare>
+    bool
+    prev_permutation(_BIter, _BIter, _Compare);
+
+  template<typename _RAIter>
+    void
+    push_heap(_RAIter, _RAIter);
+
+  template<typename _RAIter, typename _Compare>
+    void
+    push_heap(_RAIter, _RAIter, _Compare);
+
+
+
+  template<typename _FIter, typename _Tp>
+    _FIter
+    remove(_FIter, _FIter, const _Tp&);
+
+  template<typename _FIter, typename _Predicate>
+    _FIter
+    remove_if(_FIter, _FIter, _Predicate);
+
+  template<typename _IIter, typename _OIter, typename _Tp>
+    _OIter
+    remove_copy(_IIter, _IIter, _OIter, const _Tp&);
+
+  template<typename _IIter, typename _OIter, typename _Predicate>
+    _OIter
+    remove_copy_if(_IIter, _IIter, _OIter, _Predicate);
+
+
+
+  template<typename _IIter, typename _OIter, typename _Tp>
+    _OIter
+    replace_copy(_IIter, _IIter, _OIter, const _Tp&, const _Tp&);
+
+  template<typename _Iter, typename _OIter, typename _Predicate, typename _Tp>
+    _OIter
+    replace_copy_if(_Iter, _Iter, _OIter, _Predicate, const _Tp&);
+
+
+
+  template<typename _BIter>
+    void
+    reverse(_BIter, _BIter);
+
+  template<typename _BIter, typename _OIter>
+    _OIter
+    reverse_copy(_BIter, _BIter, _OIter);
+
+  inline namespace _V2
+  {
+    template<typename _FIter>
+      _FIter
+      rotate(_FIter, _FIter, _FIter);
+  }
+
+  template<typename _FIter, typename _OIter>
+    _OIter
+    rotate_copy(_FIter, _FIter, _FIter, _OIter);
+  template<typename _RAIter, typename _UGenerator>
+    void
+    shuffle(_RAIter, _RAIter, _UGenerator&&);
+
+
+  template<typename _RAIter>
+    void
+    sort_heap(_RAIter, _RAIter);
+
+  template<typename _RAIter, typename _Compare>
+    void
+    sort_heap(_RAIter, _RAIter, _Compare);
+
+  template<typename _BIter, typename _Predicate>
+    _BIter
+    stable_partition(_BIter, _BIter, _Predicate);
+  template<typename _FIter1, typename _FIter2>
+    _FIter2
+    swap_ranges(_FIter1, _FIter1, _FIter2);
+
+
+
+  template<typename _FIter>
+    _FIter
+    unique(_FIter, _FIter);
+
+  template<typename _FIter, typename _BinaryPredicate>
+    _FIter
+    unique(_FIter, _FIter, _BinaryPredicate);
+
+
+
+  template<typename _FIter, typename _Tp>
+    _FIter
+    upper_bound(_FIter, _FIter, const _Tp&);
+
+  template<typename _FIter, typename _Tp, typename _Compare>
+    _FIter
+    upper_bound(_FIter, _FIter, const _Tp&, _Compare);
+
+
+
+  template<typename _FIter>
+    _FIter
+    adjacent_find(_FIter, _FIter);
+
+  template<typename _FIter, typename _BinaryPredicate>
+    _FIter
+    adjacent_find(_FIter, _FIter, _BinaryPredicate);
+
+  template<typename _IIter, typename _Tp>
+    typename iterator_traits<_IIter>::difference_type
+    count(_IIter, _IIter, const _Tp&);
+
+  template<typename _IIter, typename _Predicate>
+    typename iterator_traits<_IIter>::difference_type
+    count_if(_IIter, _IIter, _Predicate);
+
+  template<typename _IIter1, typename _IIter2>
+    bool
+    equal(_IIter1, _IIter1, _IIter2);
+
+  template<typename _IIter1, typename _IIter2, typename _BinaryPredicate>
+    bool
+    equal(_IIter1, _IIter1, _IIter2, _BinaryPredicate);
+
+  template<typename _IIter, typename _Tp>
+    _IIter
+    find(_IIter, _IIter, const _Tp&);
+
+  template<typename _FIter1, typename _FIter2>
+    _FIter1
+    find_first_of(_FIter1, _FIter1, _FIter2, _FIter2);
+
+  template<typename _FIter1, typename _FIter2, typename _BinaryPredicate>
+    _FIter1
+    find_first_of(_FIter1, _FIter1, _FIter2, _FIter2, _BinaryPredicate);
+
+  template<typename _IIter, typename _Predicate>
+    _IIter
+    find_if(_IIter, _IIter, _Predicate);
+
+  template<typename _IIter, typename _Funct>
+    _Funct
+    for_each(_IIter, _IIter, _Funct);
+
+  template<typename _FIter, typename _Generator>
+    void
+    generate(_FIter, _FIter, _Generator);
+
+  template<typename _OIter, typename _Size, typename _Generator>
+    _OIter
+    generate_n(_OIter, _Size, _Generator);
+
+  template<typename _IIter1, typename _IIter2>
+    bool
+    lexicographical_compare(_IIter1, _IIter1, _IIter2, _IIter2);
+
+  template<typename _IIter1, typename _IIter2, typename _Compare>
+    bool
+    lexicographical_compare(_IIter1, _IIter1, _IIter2, _IIter2, _Compare);
+
+  template<typename _FIter>
+    constexpr
+    _FIter
+    max_element(_FIter, _FIter);
+
+  template<typename _FIter, typename _Compare>
+    constexpr
+    _FIter
+    max_element(_FIter, _FIter, _Compare);
+
+  template<typename _IIter1, typename _IIter2, typename _OIter>
+    _OIter
+    merge(_IIter1, _IIter1, _IIter2, _IIter2, _OIter);
+
+  template<typename _IIter1, typename _IIter2, typename _OIter,
+    typename _Compare>
+    _OIter
+    merge(_IIter1, _IIter1, _IIter2, _IIter2, _OIter, _Compare);
+
+  template<typename _FIter>
+    constexpr
+    _FIter
+    min_element(_FIter, _FIter);
+
+  template<typename _FIter, typename _Compare>
+    constexpr
+    _FIter
+    min_element(_FIter, _FIter, _Compare);
+
+  template<typename _IIter1, typename _IIter2>
+    pair<_IIter1, _IIter2>
+    mismatch(_IIter1, _IIter1, _IIter2);
+
+  template<typename _IIter1, typename _IIter2, typename _BinaryPredicate>
+    pair<_IIter1, _IIter2>
+    mismatch(_IIter1, _IIter1, _IIter2, _BinaryPredicate);
+
+  template<typename _RAIter>
+    void
+    nth_element(_RAIter, _RAIter, _RAIter);
+
+  template<typename _RAIter, typename _Compare>
+    void
+    nth_element(_RAIter, _RAIter, _RAIter, _Compare);
+
+  template<typename _RAIter>
+    void
+    partial_sort(_RAIter, _RAIter, _RAIter);
+
+  template<typename _RAIter, typename _Compare>
+    void
+    partial_sort(_RAIter, _RAIter, _RAIter, _Compare);
+
+  template<typename _BIter, typename _Predicate>
+    _BIter
+    partition(_BIter, _BIter, _Predicate);
+
+  template<typename _RAIter>
+    void
+    random_shuffle(_RAIter, _RAIter);
+
+  template<typename _RAIter, typename _Generator>
+    void
+    random_shuffle(_RAIter, _RAIter,
+
+     _Generator&&);
+
+
+
+
+  template<typename _FIter, typename _Tp>
+    void
+    replace(_FIter, _FIter, const _Tp&, const _Tp&);
+
+  template<typename _FIter, typename _Predicate, typename _Tp>
+    void
+    replace_if(_FIter, _FIter, _Predicate, const _Tp&);
+
+  template<typename _FIter1, typename _FIter2>
+    _FIter1
+    search(_FIter1, _FIter1, _FIter2, _FIter2);
+
+  template<typename _FIter1, typename _FIter2, typename _BinaryPredicate>
+    _FIter1
+    search(_FIter1, _FIter1, _FIter2, _FIter2, _BinaryPredicate);
+
+  template<typename _FIter, typename _Size, typename _Tp>
+    _FIter
+    search_n(_FIter, _FIter, _Size, const _Tp&);
+
+  template<typename _FIter, typename _Size, typename _Tp,
+    typename _BinaryPredicate>
+    _FIter
+    search_n(_FIter, _FIter, _Size, const _Tp&, _BinaryPredicate);
+
+  template<typename _IIter1, typename _IIter2, typename _OIter>
+    _OIter
+    set_difference(_IIter1, _IIter1, _IIter2, _IIter2, _OIter);
+
+  template<typename _IIter1, typename _IIter2, typename _OIter,
+    typename _Compare>
+    _OIter
+    set_difference(_IIter1, _IIter1, _IIter2, _IIter2, _OIter, _Compare);
+
+  template<typename _IIter1, typename _IIter2, typename _OIter>
+    _OIter
+    set_intersection(_IIter1, _IIter1, _IIter2, _IIter2, _OIter);
+
+  template<typename _IIter1, typename _IIter2, typename _OIter,
+    typename _Compare>
+    _OIter
+    set_intersection(_IIter1, _IIter1, _IIter2, _IIter2, _OIter, _Compare);
+
+  template<typename _IIter1, typename _IIter2, typename _OIter>
+    _OIter
+    set_symmetric_difference(_IIter1, _IIter1, _IIter2, _IIter2, _OIter);
+
+  template<typename _IIter1, typename _IIter2, typename _OIter,
+    typename _Compare>
+    _OIter
+    set_symmetric_difference(_IIter1, _IIter1, _IIter2, _IIter2,
+        _OIter, _Compare);
+
+  template<typename _IIter1, typename _IIter2, typename _OIter>
+    _OIter
+    set_union(_IIter1, _IIter1, _IIter2, _IIter2, _OIter);
+
+  template<typename _IIter1, typename _IIter2, typename _OIter,
+    typename _Compare>
+    _OIter
+    set_union(_IIter1, _IIter1, _IIter2, _IIter2, _OIter, _Compare);
+
+  template<typename _RAIter>
+    void
+    sort(_RAIter, _RAIter);
+
+  template<typename _RAIter, typename _Compare>
+    void
+    sort(_RAIter, _RAIter, _Compare);
+
+  template<typename _RAIter>
+    void
+    stable_sort(_RAIter, _RAIter);
+
+  template<typename _RAIter, typename _Compare>
+    void
+    stable_sort(_RAIter, _RAIter, _Compare);
+
+  template<typename _IIter, typename _OIter, typename _UnaryOperation>
+    _OIter
+    transform(_IIter, _IIter, _OIter, _UnaryOperation);
+
+  template<typename _IIter1, typename _IIter2, typename _OIter,
+    typename _BinaryOperation>
+    _OIter
+    transform(_IIter1, _IIter1, _IIter2, _OIter, _BinaryOperation);
+
+  template<typename _IIter, typename _OIter>
+    _OIter
+    unique_copy(_IIter, _IIter, _OIter);
+
+  template<typename _IIter, typename _OIter, typename _BinaryPredicate>
+    _OIter
+    unique_copy(_IIter, _IIter, _OIter, _BinaryPredicate);
+
+
+
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+
+  template<typename _RandomAccessIterator, typename _Distance,
+    typename _Compare>
+    _Distance
+    __is_heap_until(_RandomAccessIterator __first, _Distance __n,
+      _Compare& __comp)
+    {
+      _Distance __parent = 0;
+      for (_Distance __child = 1; __child < __n; ++__child)
+ {
+   if (__comp(__first + __parent, __first + __child))
+     return __child;
+   if ((__child & 1) == 0)
+     ++__parent;
+ }
+      return __n;
+    }
+
+
+
+  template<typename _RandomAccessIterator, typename _Distance>
+    inline bool
+    __is_heap(_RandomAccessIterator __first, _Distance __n)
+    {
+      __gnu_cxx::__ops::_Iter_less_iter __comp;
+      return std::__is_heap_until(__first, __n, __comp) == __n;
+    }
+
+  template<typename _RandomAccessIterator, typename _Compare,
+    typename _Distance>
+    inline bool
+    __is_heap(_RandomAccessIterator __first, _Compare __comp, _Distance __n)
+    {
+      typedef __decltype(__comp) _Cmp;
+      __gnu_cxx::__ops::_Iter_comp_iter<_Cmp> __cmp(std::move(__comp));
+      return std::__is_heap_until(__first, __n, __cmp) == __n;
+    }
+
+  template<typename _RandomAccessIterator>
+    inline bool
+    __is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
+    { return std::__is_heap(__first, std::distance(__first, __last)); }
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline bool
+    __is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last,
+       _Compare __comp)
+    {
+      return std::__is_heap(__first, std::move(__comp),
+       std::distance(__first, __last));
+    }
+
+
+
+
+  template<typename _RandomAccessIterator, typename _Distance, typename _Tp,
+    typename _Compare>
+    void
+    __push_heap(_RandomAccessIterator __first,
+  _Distance __holeIndex, _Distance __topIndex, _Tp __value,
+  _Compare& __comp)
+    {
+      _Distance __parent = (__holeIndex - 1) / 2;
+      while (__holeIndex > __topIndex && __comp(__first + __parent, __value))
+ {
+   *(__first + __holeIndex) = std::move(*(__first + __parent));
+   __holeIndex = __parent;
+   __parent = (__holeIndex - 1) / 2;
+ }
+      *(__first + __holeIndex) = std::move(__value);
+    }
+  template<typename _RandomAccessIterator>
+    inline void
+    push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
+    {
+      typedef typename iterator_traits<_RandomAccessIterator>::value_type
+   _ValueType;
+      typedef typename iterator_traits<_RandomAccessIterator>::difference_type
+   _DistanceType;
+
+
+     
+
+     
+      ;
+      ;
+      ;
+
+      __gnu_cxx::__ops::_Iter_less_val __comp;
+      _ValueType __value = std::move(*(__last - 1));
+      std::__push_heap(__first, _DistanceType((__last - __first) - 1),
+         _DistanceType(0), std::move(__value), __comp);
+    }
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline void
+    push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last,
+       _Compare __comp)
+    {
+      typedef typename iterator_traits<_RandomAccessIterator>::value_type
+   _ValueType;
+      typedef typename iterator_traits<_RandomAccessIterator>::difference_type
+   _DistanceType;
+
+
+     
+
+      ;
+      ;
+      ;
+
+      __decltype(__gnu_cxx::__ops::__iter_comp_val(std::move(__comp)))
+ __cmp(std::move(__comp));
+      _ValueType __value = std::move(*(__last - 1));
+      std::__push_heap(__first, _DistanceType((__last - __first) - 1),
+         _DistanceType(0), std::move(__value), __cmp);
+    }
+
+  template<typename _RandomAccessIterator, typename _Distance,
+    typename _Tp, typename _Compare>
+    void
+    __adjust_heap(_RandomAccessIterator __first, _Distance __holeIndex,
+    _Distance __len, _Tp __value, _Compare __comp)
+    {
+      const _Distance __topIndex = __holeIndex;
+      _Distance __secondChild = __holeIndex;
+      while (__secondChild < (__len - 1) / 2)
+ {
+   __secondChild = 2 * (__secondChild + 1);
+   if (__comp(__first + __secondChild,
+       __first + (__secondChild - 1)))
+     __secondChild--;
+   *(__first + __holeIndex) = std::move(*(__first + __secondChild));
+   __holeIndex = __secondChild;
+ }
+      if ((__len & 1) == 0 && __secondChild == (__len - 2) / 2)
+ {
+   __secondChild = 2 * (__secondChild + 1);
+   *(__first + __holeIndex) = std::move(*(__first + (__secondChild - 1)))
+                                  ;
+   __holeIndex = __secondChild - 1;
+ }
+      __decltype(__gnu_cxx::__ops::__iter_comp_val(std::move(__comp)))
+ __cmp(std::move(__comp));
+      std::__push_heap(__first, __holeIndex, __topIndex,
+         std::move(__value), __cmp);
+    }
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline void
+    __pop_heap(_RandomAccessIterator __first, _RandomAccessIterator __last,
+        _RandomAccessIterator __result, _Compare& __comp)
+    {
+      typedef typename iterator_traits<_RandomAccessIterator>::value_type
+ _ValueType;
+      typedef typename iterator_traits<_RandomAccessIterator>::difference_type
+ _DistanceType;
+
+      _ValueType __value = std::move(*__result);
+      *__result = std::move(*__first);
+      std::__adjust_heap(__first, _DistanceType(0),
+    _DistanceType(__last - __first),
+    std::move(__value), __comp);
+    }
+  template<typename _RandomAccessIterator>
+    inline void
+    pop_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
+    {
+
+     
+
+     
+
+      ;
+      ;
+      ;
+      ;
+
+      if (__last - __first > 1)
+ {
+   --__last;
+   __gnu_cxx::__ops::_Iter_less_iter __comp;
+   std::__pop_heap(__first, __last, __last, __comp);
+ }
+    }
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline void
+    pop_heap(_RandomAccessIterator __first,
+      _RandomAccessIterator __last, _Compare __comp)
+    {
+
+     
+
+      ;
+      ;
+      ;
+      ;
+
+      if (__last - __first > 1)
+ {
+   typedef __decltype(__comp) _Cmp;
+   __gnu_cxx::__ops::_Iter_comp_iter<_Cmp> __cmp(std::move(__comp));
+   --__last;
+   std::__pop_heap(__first, __last, __last, __cmp);
+ }
+    }
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    void
+    __make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last,
+  _Compare& __comp)
+    {
+      typedef typename iterator_traits<_RandomAccessIterator>::value_type
+   _ValueType;
+      typedef typename iterator_traits<_RandomAccessIterator>::difference_type
+   _DistanceType;
+
+      if (__last - __first < 2)
+ return;
+
+      const _DistanceType __len = __last - __first;
+      _DistanceType __parent = (__len - 2) / 2;
+      while (true)
+ {
+   _ValueType __value = std::move(*(__first + __parent));
+   std::__adjust_heap(__first, __parent, __len, std::move(__value),
+        __comp);
+   if (__parent == 0)
+     return;
+   __parent--;
+ }
+    }
+  template<typename _RandomAccessIterator>
+    inline void
+    make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
+    {
+
+     
+
+     
+
+      ;
+      ;
+
+      __gnu_cxx::__ops::_Iter_less_iter __comp;
+      std::__make_heap(__first, __last, __comp);
+    }
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline void
+    make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last,
+       _Compare __comp)
+    {
+
+     
+
+      ;
+      ;
+
+      typedef __decltype(__comp) _Cmp;
+      __gnu_cxx::__ops::_Iter_comp_iter<_Cmp> __cmp(std::move(__comp));
+      std::__make_heap(__first, __last, __cmp);
+    }
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    void
+    __sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last,
+  _Compare& __comp)
+    {
+      while (__last - __first > 1)
+ {
+   --__last;
+   std::__pop_heap(__first, __last, __last, __comp);
+ }
+    }
+  template<typename _RandomAccessIterator>
+    inline void
+    sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
+    {
+
+     
+
+     
+
+      ;
+      ;
+      ;
+
+      __gnu_cxx::__ops::_Iter_less_iter __comp;
+      std::__sort_heap(__first, __last, __comp);
+    }
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline void
+    sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last,
+       _Compare __comp)
+    {
+
+     
+
+      ;
+      ;
+      ;
+
+      typedef __decltype(__comp) _Cmp;
+      __gnu_cxx::__ops::_Iter_comp_iter<_Cmp> __cmp(std::move(__comp));
+      std::__sort_heap(__first, __last, __cmp);
+    }
+  template<typename _RandomAccessIterator>
+    inline _RandomAccessIterator
+    is_heap_until(_RandomAccessIterator __first, _RandomAccessIterator __last)
+    {
+
+     
+
+     
+
+      ;
+      ;
+
+      __gnu_cxx::__ops::_Iter_less_iter __comp;
+      return __first +
+ std::__is_heap_until(__first, std::distance(__first, __last), __comp);
+    }
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline _RandomAccessIterator
+    is_heap_until(_RandomAccessIterator __first, _RandomAccessIterator __last,
+    _Compare __comp)
+    {
+
+     
+
+      ;
+      ;
+
+      typedef __decltype(__comp) _Cmp;
+      __gnu_cxx::__ops::_Iter_comp_iter<_Cmp> __cmp(std::move(__comp));
+      return __first
+ + std::__is_heap_until(__first, std::distance(__first, __last), __cmp);
+    }
+  template<typename _RandomAccessIterator>
+    inline bool
+    is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
+    { return std::is_heap_until(__first, __last) == __last; }
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline bool
+    is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last,
+     _Compare __comp)
+    {
+
+     
+
+      ;
+      ;
+
+      const auto __dist = std::distance(__first, __last);
+      typedef __decltype(__comp) _Cmp;
+      __gnu_cxx::__ops::_Iter_comp_iter<_Cmp> __cmp(std::move(__comp));
+      return std::__is_heap_until(__first, __dist, __cmp) == __dist;
+    }
+
+
+
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+
+  template<typename _T1, typename... _Args>
+    inline void
+    _Construct(_T1* __p, _Args&&... __args)
+    { ::new(static_cast<void*>(__p)) _T1(std::forward<_Args>(__args)...); }
+  template<typename _T1>
+    inline void
+    _Construct_novalue(_T1* __p)
+    { ::new(static_cast<void*>(__p)) _T1; }
+
+
+
+
+  template<typename _Tp>
+    inline void
+    _Destroy(_Tp* __pointer)
+    { __pointer->~_Tp(); }
+
+  template<bool>
+    struct _Destroy_aux
+    {
+      template<typename _ForwardIterator>
+        static void
+        __destroy(_ForwardIterator __first, _ForwardIterator __last)
+ {
+   for (; __first != __last; ++__first)
+     std::_Destroy(std::__addressof(*__first));
+ }
+    };
+
+  template<>
+    struct _Destroy_aux<true>
+    {
+      template<typename _ForwardIterator>
+        static void
+        __destroy(_ForwardIterator, _ForwardIterator) { }
+    };
+
+
+
+
+
+
+  template<typename _ForwardIterator>
+    inline void
+    _Destroy(_ForwardIterator __first, _ForwardIterator __last)
+    {
+      typedef typename iterator_traits<_ForwardIterator>::value_type
+                       _Value_type;
+
+
+      static_assert(is_destructible<_Value_type>::value,
+      "value type is destructible");
+
+      std::_Destroy_aux<__has_trivial_destructor(_Value_type)>::
+ __destroy(__first, __last);
+    }
+
+  template<bool>
+    struct _Destroy_n_aux
+    {
+      template<typename _ForwardIterator, typename _Size>
+        static _ForwardIterator
+        __destroy_n(_ForwardIterator __first, _Size __count)
+ {
+   for (; __count > 0; (void)++__first, --__count)
+     std::_Destroy(std::__addressof(*__first));
+   return __first;
+ }
+    };
+
+  template<>
+    struct _Destroy_n_aux<true>
+    {
+      template<typename _ForwardIterator, typename _Size>
+        static _ForwardIterator
+        __destroy_n(_ForwardIterator __first, _Size __count)
+ {
+   std::advance(__first, __count);
+   return __first;
+ }
+    };
+
+
+
+
+
+
+  template<typename _ForwardIterator, typename _Size>
+    inline _ForwardIterator
+    _Destroy_n(_ForwardIterator __first, _Size __count)
+    {
+      typedef typename iterator_traits<_ForwardIterator>::value_type
+                       _Value_type;
+
+
+      static_assert(is_destructible<_Value_type>::value,
+      "value type is destructible");
+
+      return std::_Destroy_n_aux<__has_trivial_destructor(_Value_type)>::
+ __destroy_n(__first, __count);
+    }
+
+
+
+
+
+
+
+  template<typename _ForwardIterator, typename _Allocator>
+    void
+    _Destroy(_ForwardIterator __first, _ForwardIterator __last,
+      _Allocator& __alloc)
+    {
+      typedef __gnu_cxx::__alloc_traits<_Allocator> __traits;
+      for (; __first != __last; ++__first)
+ __traits::destroy(__alloc, std::__addressof(*__first));
+    }
+
+  template<typename _ForwardIterator, typename _Tp>
+    inline void
+    _Destroy(_ForwardIterator __first, _ForwardIterator __last,
+      allocator<_Tp>&)
+    {
+      _Destroy(__first, __last);
+    }
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _Tp>
+    pair<_Tp*, ptrdiff_t>
+    get_temporary_buffer(ptrdiff_t __len) noexcept
+    {
+      const ptrdiff_t __max =
+ __gnu_cxx::__numeric_traits<ptrdiff_t>::__max / sizeof(_Tp);
+      if (__len > __max)
+ __len = __max;
+
+      while (__len > 0)
+ {
+   _Tp* __tmp = static_cast<_Tp*>(::operator new(__len * sizeof(_Tp),
+       std::nothrow));
+   if (__tmp != 0)
+     return std::pair<_Tp*, ptrdiff_t>(__tmp, __len);
+   __len /= 2;
+ }
+      return std::pair<_Tp*, ptrdiff_t>(static_cast<_Tp*>(0), 0);
+    }
+  template<typename _Tp>
+    inline void
+    return_temporary_buffer(_Tp* __p)
+    { ::operator delete(__p, std::nothrow); }
+
+
+
+
+
+
+
+  template<typename _ForwardIterator, typename _Tp>
+    class _Temporary_buffer
+    {
+
+     
+
+    public:
+      typedef _Tp value_type;
+      typedef value_type* pointer;
+      typedef pointer iterator;
+      typedef ptrdiff_t size_type;
+
+    protected:
+      size_type _M_original_len;
+      size_type _M_len;
+      pointer _M_buffer;
+
+    public:
+
+      size_type
+      size() const
+      { return _M_len; }
+
+
+      size_type
+      requested_size() const
+      { return _M_original_len; }
+
+
+      iterator
+      begin()
+      { return _M_buffer; }
+
+
+      iterator
+      end()
+      { return _M_buffer + _M_len; }
+
+
+
+
+
+      _Temporary_buffer(_ForwardIterator __first, _ForwardIterator __last);
+
+      ~_Temporary_buffer()
+      {
+ std::_Destroy(_M_buffer, _M_buffer + _M_len);
+ std::return_temporary_buffer(_M_buffer);
+      }
+
+    private:
+
+      _Temporary_buffer(const _Temporary_buffer&);
+
+      void
+      operator=(const _Temporary_buffer&);
+    };
+
+
+  template<bool>
+    struct __uninitialized_construct_buf_dispatch
+    {
+      template<typename _Pointer, typename _ForwardIterator>
+        static void
+        __ucr(_Pointer __first, _Pointer __last,
+       _ForwardIterator __seed)
+        {
+   if(__first == __last)
+     return;
+
+   _Pointer __cur = __first;
+   try
+     {
+       std::_Construct(std::__addressof(*__first),
+         std::move(*__seed));
+       _Pointer __prev = __cur;
+       ++__cur;
+       for(; __cur != __last; ++__cur, ++__prev)
+  std::_Construct(std::__addressof(*__cur),
+    std::move(*__prev));
+       *__seed = std::move(*__prev);
+     }
+   catch(...)
+     {
+       std::_Destroy(__first, __cur);
+       throw;
+     }
+ }
+    };
+
+  template<>
+    struct __uninitialized_construct_buf_dispatch<true>
+    {
+      template<typename _Pointer, typename _ForwardIterator>
+        static void
+        __ucr(_Pointer, _Pointer, _ForwardIterator) { }
+    };
+  template<typename _Pointer, typename _ForwardIterator>
+    inline void
+    __uninitialized_construct_buf(_Pointer __first, _Pointer __last,
+      _ForwardIterator __seed)
+    {
+      typedef typename std::iterator_traits<_Pointer>::value_type
+ _ValueType;
+
+      std::__uninitialized_construct_buf_dispatch<
+        __has_trivial_constructor(_ValueType)>::
+   __ucr(__first, __last, __seed);
+    }
+
+  template<typename _ForwardIterator, typename _Tp>
+    _Temporary_buffer<_ForwardIterator, _Tp>::
+    _Temporary_buffer(_ForwardIterator __first, _ForwardIterator __last)
+    : _M_original_len(std::distance(__first, __last)),
+      _M_len(0), _M_buffer(0)
+    {
+      try
+ {
+   std::pair<pointer, size_type> __p(std::get_temporary_buffer<
+         value_type>(_M_original_len));
+   _M_buffer = __p.first;
+   _M_len = __p.second;
+   if (_M_buffer)
+     std::__uninitialized_construct_buf(_M_buffer, _M_buffer + _M_len,
+            __first);
+ }
+      catch(...)
+ {
+   std::return_temporary_buffer(_M_buffer);
+   _M_buffer = 0;
+   _M_len = 0;
+   throw;
+ }
+    }
+
+
+}
+
+
+
+       
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+
+  enum float_round_style
+  {
+    round_indeterminate = -1,
+    round_toward_zero = 0,
+    round_to_nearest = 1,
+    round_toward_infinity = 2,
+    round_toward_neg_infinity = 3
+  };
+
+
+
+
+
+
+
+  enum float_denorm_style
+  {
+
+    denorm_indeterminate = -1,
+
+    denorm_absent = 0,
+
+    denorm_present = 1
+  };
+  struct __numeric_limits_base
+  {
+
+
+    static constexpr bool is_specialized = false;
+
+
+
+
+    static constexpr int digits = 0;
+
+
+    static constexpr int digits10 = 0;
+
+
+
+
+    static constexpr int max_digits10 = 0;
+
+
+
+    static constexpr bool is_signed = false;
+
+
+    static constexpr bool is_integer = false;
+
+
+
+
+    static constexpr bool is_exact = false;
+
+
+
+    static constexpr int radix = 0;
+
+
+
+    static constexpr int min_exponent = 0;
+
+
+
+    static constexpr int min_exponent10 = 0;
+
+
+
+
+    static constexpr int max_exponent = 0;
+
+
+
+    static constexpr int max_exponent10 = 0;
+
+
+    static constexpr bool has_infinity = false;
+
+
+
+    static constexpr bool has_quiet_NaN = false;
+
+
+
+    static constexpr bool has_signaling_NaN = false;
+
+
+    static constexpr float_denorm_style has_denorm = denorm_absent;
+
+
+
+    static constexpr bool has_denorm_loss = false;
+
+
+
+    static constexpr bool is_iec559 = false;
+
+
+
+
+    static constexpr bool is_bounded = false;
+    static constexpr bool is_modulo = false;
+
+
+    static constexpr bool traps = false;
+
+
+    static constexpr bool tinyness_before = false;
+
+
+
+
+    static constexpr float_round_style round_style =
+          round_toward_zero;
+  };
+  template<typename _Tp>
+    struct numeric_limits : public __numeric_limits_base
+    {
+
+
+      static constexpr _Tp
+      min() noexcept { return _Tp(); }
+
+
+      static constexpr _Tp
+      max() noexcept { return _Tp(); }
+
+
+
+
+      static constexpr _Tp
+      lowest() noexcept { return _Tp(); }
+
+
+
+
+      static constexpr _Tp
+      epsilon() noexcept { return _Tp(); }
+
+
+      static constexpr _Tp
+      round_error() noexcept { return _Tp(); }
+
+
+      static constexpr _Tp
+      infinity() noexcept { return _Tp(); }
+
+
+
+      static constexpr _Tp
+      quiet_NaN() noexcept { return _Tp(); }
+
+
+
+      static constexpr _Tp
+      signaling_NaN() noexcept { return _Tp(); }
+
+
+
+
+      static constexpr _Tp
+      denorm_min() noexcept { return _Tp(); }
+    };
+
+
+
+
+  template<typename _Tp>
+    struct numeric_limits<const _Tp>
+    : public numeric_limits<_Tp> { };
+
+  template<typename _Tp>
+    struct numeric_limits<volatile _Tp>
+    : public numeric_limits<_Tp> { };
+
+  template<typename _Tp>
+    struct numeric_limits<const volatile _Tp>
+    : public numeric_limits<_Tp> { };
+  template<>
+    struct numeric_limits<bool>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr bool
+      min() noexcept { return false; }
+
+      static constexpr bool
+      max() noexcept { return true; }
+
+
+      static constexpr bool
+      lowest() noexcept { return min(); }
+
+      static constexpr int digits = 1;
+      static constexpr int digits10 = 0;
+
+      static constexpr int max_digits10 = 0;
+
+      static constexpr bool is_signed = false;
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr bool
+      epsilon() noexcept { return false; }
+
+      static constexpr bool
+      round_error() noexcept { return false; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm
+       = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr bool
+      infinity() noexcept { return false; }
+
+      static constexpr bool
+      quiet_NaN() noexcept { return false; }
+
+      static constexpr bool
+      signaling_NaN() noexcept { return false; }
+
+      static constexpr bool
+      denorm_min() noexcept { return false; }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = false;
+
+
+
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style
+       = round_toward_zero;
+    };
+
+
+  template<>
+    struct numeric_limits<char>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr char
+      min() noexcept { return (((char)(-1) < 0) ? -(((char)(-1) < 0) ? (((((char)1 << ((sizeof(char) * 8 - ((char)(-1) < 0)) - 1)) - 1) << 1) + 1) : ~(char)0) - 1 : (char)0); }
+
+      static constexpr char
+      max() noexcept { return (((char)(-1) < 0) ? (((((char)1 << ((sizeof(char) * 8 - ((char)(-1) < 0)) - 1)) - 1) << 1) + 1) : ~(char)0); }
+
+
+      static constexpr char
+      lowest() noexcept { return min(); }
+
+
+      static constexpr int digits = (sizeof(char) * 8 - ((char)(-1) < 0));
+      static constexpr int digits10 = ((sizeof(char) * 8 - ((char)(-1) < 0)) * 643L / 2136);
+
+      static constexpr int max_digits10 = 0;
+
+      static constexpr bool is_signed = ((char)(-1) < 0);
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr char
+      epsilon() noexcept { return 0; }
+
+      static constexpr char
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm
+       = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr
+      char infinity() noexcept { return char(); }
+
+      static constexpr char
+      quiet_NaN() noexcept { return char(); }
+
+      static constexpr char
+      signaling_NaN() noexcept { return char(); }
+
+      static constexpr char
+      denorm_min() noexcept { return static_cast<char>(0); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = !is_signed;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style
+       = round_toward_zero;
+    };
+
+
+  template<>
+    struct numeric_limits<signed char>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr signed char
+      min() noexcept { return -0x7f - 1; }
+
+      static constexpr signed char
+      max() noexcept { return 0x7f; }
+
+
+      static constexpr signed char
+      lowest() noexcept { return min(); }
+
+
+      static constexpr int digits = (sizeof(signed char) * 8 - ((signed char)(-1) < 0));
+      static constexpr int digits10
+       = ((sizeof(signed char) * 8 - ((signed char)(-1) < 0)) * 643L / 2136);
+
+      static constexpr int max_digits10 = 0;
+
+      static constexpr bool is_signed = true;
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr signed char
+      epsilon() noexcept { return 0; }
+
+      static constexpr signed char
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm
+       = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr signed char
+      infinity() noexcept { return static_cast<signed char>(0); }
+
+      static constexpr signed char
+      quiet_NaN() noexcept { return static_cast<signed char>(0); }
+
+      static constexpr signed char
+      signaling_NaN() noexcept
+      { return static_cast<signed char>(0); }
+
+      static constexpr signed char
+      denorm_min() noexcept
+      { return static_cast<signed char>(0); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = false;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style
+       = round_toward_zero;
+    };
+
+
+  template<>
+    struct numeric_limits<unsigned char>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr unsigned char
+      min() noexcept { return 0; }
+
+      static constexpr unsigned char
+      max() noexcept { return 0x7f * 2U + 1; }
+
+
+      static constexpr unsigned char
+      lowest() noexcept { return min(); }
+
+
+      static constexpr int digits
+       = (sizeof(unsigned char) * 8 - ((unsigned char)(-1) < 0));
+      static constexpr int digits10
+       = ((sizeof(unsigned char) * 8 - ((unsigned char)(-1) < 0)) * 643L / 2136);
+
+      static constexpr int max_digits10 = 0;
+
+      static constexpr bool is_signed = false;
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr unsigned char
+      epsilon() noexcept { return 0; }
+
+      static constexpr unsigned char
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm
+       = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr unsigned char
+      infinity() noexcept
+      { return static_cast<unsigned char>(0); }
+
+      static constexpr unsigned char
+      quiet_NaN() noexcept
+      { return static_cast<unsigned char>(0); }
+
+      static constexpr unsigned char
+      signaling_NaN() noexcept
+      { return static_cast<unsigned char>(0); }
+
+      static constexpr unsigned char
+      denorm_min() noexcept
+      { return static_cast<unsigned char>(0); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = true;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style
+       = round_toward_zero;
+    };
+
+
+  template<>
+    struct numeric_limits<wchar_t>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr wchar_t
+      min() noexcept { return (((wchar_t)(-1) < 0) ? -(((wchar_t)(-1) < 0) ? (((((wchar_t)1 << ((sizeof(wchar_t) * 8 - ((wchar_t)(-1) < 0)) - 1)) - 1) << 1) + 1) : ~(wchar_t)0) - 1 : (wchar_t)0); }
+
+      static constexpr wchar_t
+      max() noexcept { return (((wchar_t)(-1) < 0) ? (((((wchar_t)1 << ((sizeof(wchar_t) * 8 - ((wchar_t)(-1) < 0)) - 1)) - 1) << 1) + 1) : ~(wchar_t)0); }
+
+
+      static constexpr wchar_t
+      lowest() noexcept { return min(); }
+
+
+      static constexpr int digits = (sizeof(wchar_t) * 8 - ((wchar_t)(-1) < 0));
+      static constexpr int digits10
+       = ((sizeof(wchar_t) * 8 - ((wchar_t)(-1) < 0)) * 643L / 2136);
+
+      static constexpr int max_digits10 = 0;
+
+      static constexpr bool is_signed = ((wchar_t)(-1) < 0);
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr wchar_t
+      epsilon() noexcept { return 0; }
+
+      static constexpr wchar_t
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm
+       = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr wchar_t
+      infinity() noexcept { return wchar_t(); }
+
+      static constexpr wchar_t
+      quiet_NaN() noexcept { return wchar_t(); }
+
+      static constexpr wchar_t
+      signaling_NaN() noexcept { return wchar_t(); }
+
+      static constexpr wchar_t
+      denorm_min() noexcept { return wchar_t(); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = !is_signed;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style
+       = round_toward_zero;
+    };
+
+
+
+  template<>
+    struct numeric_limits<char16_t>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr char16_t
+      min() noexcept { return (((char16_t)(-1) < 0) ? -(((char16_t)(-1) < 0) ? (((((char16_t)1 << ((sizeof(char16_t) * 8 - ((char16_t)(-1) < 0)) - 1)) - 1) << 1) + 1) : ~(char16_t)0) - 1 : (char16_t)0); }
+
+      static constexpr char16_t
+      max() noexcept { return (((char16_t)(-1) < 0) ? (((((char16_t)1 << ((sizeof(char16_t) * 8 - ((char16_t)(-1) < 0)) - 1)) - 1) << 1) + 1) : ~(char16_t)0); }
+
+      static constexpr char16_t
+      lowest() noexcept { return min(); }
+
+      static constexpr int digits = (sizeof(char16_t) * 8 - ((char16_t)(-1) < 0));
+      static constexpr int digits10 = ((sizeof(char16_t) * 8 - ((char16_t)(-1) < 0)) * 643L / 2136);
+      static constexpr int max_digits10 = 0;
+      static constexpr bool is_signed = ((char16_t)(-1) < 0);
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr char16_t
+      epsilon() noexcept { return 0; }
+
+      static constexpr char16_t
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr char16_t
+      infinity() noexcept { return char16_t(); }
+
+      static constexpr char16_t
+      quiet_NaN() noexcept { return char16_t(); }
+
+      static constexpr char16_t
+      signaling_NaN() noexcept { return char16_t(); }
+
+      static constexpr char16_t
+      denorm_min() noexcept { return char16_t(); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = !is_signed;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style = round_toward_zero;
+    };
+
+
+  template<>
+    struct numeric_limits<char32_t>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr char32_t
+      min() noexcept { return (((char32_t)(-1) < 0) ? -(((char32_t)(-1) < 0) ? (((((char32_t)1 << ((sizeof(char32_t) * 8 - ((char32_t)(-1) < 0)) - 1)) - 1) << 1) + 1) : ~(char32_t)0) - 1 : (char32_t)0); }
+
+      static constexpr char32_t
+      max() noexcept { return (((char32_t)(-1) < 0) ? (((((char32_t)1 << ((sizeof(char32_t) * 8 - ((char32_t)(-1) < 0)) - 1)) - 1) << 1) + 1) : ~(char32_t)0); }
+
+      static constexpr char32_t
+      lowest() noexcept { return min(); }
+
+      static constexpr int digits = (sizeof(char32_t) * 8 - ((char32_t)(-1) < 0));
+      static constexpr int digits10 = ((sizeof(char32_t) * 8 - ((char32_t)(-1) < 0)) * 643L / 2136);
+      static constexpr int max_digits10 = 0;
+      static constexpr bool is_signed = ((char32_t)(-1) < 0);
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr char32_t
+      epsilon() noexcept { return 0; }
+
+      static constexpr char32_t
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr char32_t
+      infinity() noexcept { return char32_t(); }
+
+      static constexpr char32_t
+      quiet_NaN() noexcept { return char32_t(); }
+
+      static constexpr char32_t
+      signaling_NaN() noexcept { return char32_t(); }
+
+      static constexpr char32_t
+      denorm_min() noexcept { return char32_t(); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = !is_signed;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style = round_toward_zero;
+    };
+
+
+
+  template<>
+    struct numeric_limits<short>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr short
+      min() noexcept { return -0x7fff - 1; }
+
+      static constexpr short
+      max() noexcept { return 0x7fff; }
+
+
+      static constexpr short
+      lowest() noexcept { return min(); }
+
+
+      static constexpr int digits = (sizeof(short) * 8 - ((short)(-1) < 0));
+      static constexpr int digits10 = ((sizeof(short) * 8 - ((short)(-1) < 0)) * 643L / 2136);
+
+      static constexpr int max_digits10 = 0;
+
+      static constexpr bool is_signed = true;
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr short
+      epsilon() noexcept { return 0; }
+
+      static constexpr short
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm
+       = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr short
+      infinity() noexcept { return short(); }
+
+      static constexpr short
+      quiet_NaN() noexcept { return short(); }
+
+      static constexpr short
+      signaling_NaN() noexcept { return short(); }
+
+      static constexpr short
+      denorm_min() noexcept { return short(); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = false;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style
+       = round_toward_zero;
+    };
+
+
+  template<>
+    struct numeric_limits<unsigned short>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr unsigned short
+      min() noexcept { return 0; }
+
+      static constexpr unsigned short
+      max() noexcept { return 0x7fff * 2U + 1; }
+
+
+      static constexpr unsigned short
+      lowest() noexcept { return min(); }
+
+
+      static constexpr int digits
+       = (sizeof(unsigned short) * 8 - ((unsigned short)(-1) < 0));
+      static constexpr int digits10
+       = ((sizeof(unsigned short) * 8 - ((unsigned short)(-1) < 0)) * 643L / 2136);
+
+      static constexpr int max_digits10 = 0;
+
+      static constexpr bool is_signed = false;
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr unsigned short
+      epsilon() noexcept { return 0; }
+
+      static constexpr unsigned short
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm
+       = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr unsigned short
+      infinity() noexcept
+      { return static_cast<unsigned short>(0); }
+
+      static constexpr unsigned short
+      quiet_NaN() noexcept
+      { return static_cast<unsigned short>(0); }
+
+      static constexpr unsigned short
+      signaling_NaN() noexcept
+      { return static_cast<unsigned short>(0); }
+
+      static constexpr unsigned short
+      denorm_min() noexcept
+      { return static_cast<unsigned short>(0); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = true;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style
+       = round_toward_zero;
+    };
+
+
+  template<>
+    struct numeric_limits<int>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr int
+      min() noexcept { return -0x7fffffff - 1; }
+
+      static constexpr int
+      max() noexcept { return 0x7fffffff; }
+
+
+      static constexpr int
+      lowest() noexcept { return min(); }
+
+
+      static constexpr int digits = (sizeof(int) * 8 - ((int)(-1) < 0));
+      static constexpr int digits10 = ((sizeof(int) * 8 - ((int)(-1) < 0)) * 643L / 2136);
+
+      static constexpr int max_digits10 = 0;
+
+      static constexpr bool is_signed = true;
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr int
+      epsilon() noexcept { return 0; }
+
+      static constexpr int
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm
+       = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr int
+      infinity() noexcept { return static_cast<int>(0); }
+
+      static constexpr int
+      quiet_NaN() noexcept { return static_cast<int>(0); }
+
+      static constexpr int
+      signaling_NaN() noexcept { return static_cast<int>(0); }
+
+      static constexpr int
+      denorm_min() noexcept { return static_cast<int>(0); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = false;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style
+       = round_toward_zero;
+    };
+
+
+  template<>
+    struct numeric_limits<unsigned int>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr unsigned int
+      min() noexcept { return 0; }
+
+      static constexpr unsigned int
+      max() noexcept { return 0x7fffffff * 2U + 1; }
+
+
+      static constexpr unsigned int
+      lowest() noexcept { return min(); }
+
+
+      static constexpr int digits
+       = (sizeof(unsigned int) * 8 - ((unsigned int)(-1) < 0));
+      static constexpr int digits10
+       = ((sizeof(unsigned int) * 8 - ((unsigned int)(-1) < 0)) * 643L / 2136);
+
+      static constexpr int max_digits10 = 0;
+
+      static constexpr bool is_signed = false;
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr unsigned int
+      epsilon() noexcept { return 0; }
+
+      static constexpr unsigned int
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm
+       = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr unsigned int
+      infinity() noexcept { return static_cast<unsigned int>(0); }
+
+      static constexpr unsigned int
+      quiet_NaN() noexcept
+      { return static_cast<unsigned int>(0); }
+
+      static constexpr unsigned int
+      signaling_NaN() noexcept
+      { return static_cast<unsigned int>(0); }
+
+      static constexpr unsigned int
+      denorm_min() noexcept
+      { return static_cast<unsigned int>(0); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = true;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style
+       = round_toward_zero;
+    };
+
+
+  template<>
+    struct numeric_limits<long>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr long
+      min() noexcept { return -0x7fffffffffffffffL - 1; }
+
+      static constexpr long
+      max() noexcept { return 0x7fffffffffffffffL; }
+
+
+      static constexpr long
+      lowest() noexcept { return min(); }
+
+
+      static constexpr int digits = (sizeof(long) * 8 - ((long)(-1) < 0));
+      static constexpr int digits10 = ((sizeof(long) * 8 - ((long)(-1) < 0)) * 643L / 2136);
+
+      static constexpr int max_digits10 = 0;
+
+      static constexpr bool is_signed = true;
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr long
+      epsilon() noexcept { return 0; }
+
+      static constexpr long
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm
+       = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr long
+      infinity() noexcept { return static_cast<long>(0); }
+
+      static constexpr long
+      quiet_NaN() noexcept { return static_cast<long>(0); }
+
+      static constexpr long
+      signaling_NaN() noexcept { return static_cast<long>(0); }
+
+      static constexpr long
+      denorm_min() noexcept { return static_cast<long>(0); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = false;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style
+       = round_toward_zero;
+    };
+
+
+  template<>
+    struct numeric_limits<unsigned long>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr unsigned long
+      min() noexcept { return 0; }
+
+      static constexpr unsigned long
+      max() noexcept { return 0x7fffffffffffffffL * 2UL + 1; }
+
+
+      static constexpr unsigned long
+      lowest() noexcept { return min(); }
+
+
+      static constexpr int digits
+       = (sizeof(unsigned long) * 8 - ((unsigned long)(-1) < 0));
+      static constexpr int digits10
+       = ((sizeof(unsigned long) * 8 - ((unsigned long)(-1) < 0)) * 643L / 2136);
+
+      static constexpr int max_digits10 = 0;
+
+      static constexpr bool is_signed = false;
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr unsigned long
+      epsilon() noexcept { return 0; }
+
+      static constexpr unsigned long
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm
+       = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr unsigned long
+      infinity() noexcept
+      { return static_cast<unsigned long>(0); }
+
+      static constexpr unsigned long
+      quiet_NaN() noexcept
+      { return static_cast<unsigned long>(0); }
+
+      static constexpr unsigned long
+      signaling_NaN() noexcept
+      { return static_cast<unsigned long>(0); }
+
+      static constexpr unsigned long
+      denorm_min() noexcept
+      { return static_cast<unsigned long>(0); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = true;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style
+       = round_toward_zero;
+    };
+
+
+  template<>
+    struct numeric_limits<long long>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr long long
+      min() noexcept { return -0x7fffffffffffffffLL - 1; }
+
+      static constexpr long long
+      max() noexcept { return 0x7fffffffffffffffLL; }
+
+
+      static constexpr long long
+      lowest() noexcept { return min(); }
+
+
+      static constexpr int digits
+       = (sizeof(long long) * 8 - ((long long)(-1) < 0));
+      static constexpr int digits10
+       = ((sizeof(long long) * 8 - ((long long)(-1) < 0)) * 643L / 2136);
+
+      static constexpr int max_digits10 = 0;
+
+      static constexpr bool is_signed = true;
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr long long
+      epsilon() noexcept { return 0; }
+
+      static constexpr long long
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm
+       = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr long long
+      infinity() noexcept { return static_cast<long long>(0); }
+
+      static constexpr long long
+      quiet_NaN() noexcept { return static_cast<long long>(0); }
+
+      static constexpr long long
+      signaling_NaN() noexcept
+      { return static_cast<long long>(0); }
+
+      static constexpr long long
+      denorm_min() noexcept { return static_cast<long long>(0); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = false;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style
+       = round_toward_zero;
+    };
+
+
+  template<>
+    struct numeric_limits<unsigned long long>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr unsigned long long
+      min() noexcept { return 0; }
+
+      static constexpr unsigned long long
+      max() noexcept { return 0x7fffffffffffffffLL * 2ULL + 1; }
+
+
+      static constexpr unsigned long long
+      lowest() noexcept { return min(); }
+
+
+      static constexpr int digits
+       = (sizeof(unsigned long long) * 8 - ((unsigned long long)(-1) < 0));
+      static constexpr int digits10
+       = ((sizeof(unsigned long long) * 8 - ((unsigned long long)(-1) < 0)) * 643L / 2136);
+
+      static constexpr int max_digits10 = 0;
+
+      static constexpr bool is_signed = false;
+      static constexpr bool is_integer = true;
+      static constexpr bool is_exact = true;
+      static constexpr int radix = 2;
+
+      static constexpr unsigned long long
+      epsilon() noexcept { return 0; }
+
+      static constexpr unsigned long long
+      round_error() noexcept { return 0; }
+
+      static constexpr int min_exponent = 0;
+      static constexpr int min_exponent10 = 0;
+      static constexpr int max_exponent = 0;
+      static constexpr int max_exponent10 = 0;
+
+      static constexpr bool has_infinity = false;
+      static constexpr bool has_quiet_NaN = false;
+      static constexpr bool has_signaling_NaN = false;
+      static constexpr float_denorm_style has_denorm
+       = denorm_absent;
+      static constexpr bool has_denorm_loss = false;
+
+      static constexpr unsigned long long
+      infinity() noexcept
+      { return static_cast<unsigned long long>(0); }
+
+      static constexpr unsigned long long
+      quiet_NaN() noexcept
+      { return static_cast<unsigned long long>(0); }
+
+      static constexpr unsigned long long
+      signaling_NaN() noexcept
+      { return static_cast<unsigned long long>(0); }
+
+      static constexpr unsigned long long
+      denorm_min() noexcept
+      { return static_cast<unsigned long long>(0); }
+
+      static constexpr bool is_iec559 = false;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = true;
+
+      static constexpr bool traps = true;
+      static constexpr bool tinyness_before = false;
+      static constexpr float_round_style round_style
+       = round_toward_zero;
+    };
+  template<> struct numeric_limits<__int128> { static constexpr bool is_specialized = true; static constexpr __int128 min() noexcept { return (((__int128)(-1) < 0) ? -(((__int128)(-1) < 0) ? (((((__int128)1 << ((128 - ((__int128)(-1) < 0)) - 1)) - 1) << 1) + 1) : ~(__int128)0) - 1 : (__int128)0); } static constexpr __int128 max() noexcept { return (((__int128)(-1) < 0) ? (((((__int128)1 << ((128 - ((__int128)(-1) < 0)) - 1)) - 1) << 1) + 1) : ~(__int128)0); } static constexpr int digits = 128 - 1; static constexpr int digits10 = (128 - 1) * 643L / 2136; static constexpr bool is_signed = true; static constexpr bool is_integer = true; static constexpr bool is_exact = true; static constexpr int radix = 2; static constexpr __int128 epsilon() noexcept { return 0; } static constexpr __int128 round_error() noexcept { return 0; } static constexpr __int128 lowest() noexcept { return min(); } static constexpr int max_digits10 = 0; static constexpr int min_exponent = 0; static constexpr int min_exponent10 = 0; static constexpr int max_exponent = 0; static constexpr int max_exponent10 = 0; static constexpr bool has_infinity = false; static constexpr bool has_quiet_NaN = false; static constexpr bool has_signaling_NaN = false; static constexpr float_denorm_style has_denorm = denorm_absent; static constexpr bool has_denorm_loss = false; static constexpr __int128 infinity() noexcept { return static_cast<__int128>(0); } static constexpr __int128 quiet_NaN() noexcept { return static_cast<__int128>(0); } static constexpr __int128 signaling_NaN() noexcept { return static_cast<__int128>(0); } static constexpr __int128 denorm_min() noexcept { return static_cast<__int128>(0); } static constexpr bool is_iec559 = false; static constexpr bool is_bounded = true; static constexpr bool is_modulo = false; static constexpr bool traps = true; static constexpr bool tinyness_before = false; static constexpr float_round_style round_style = round_toward_zero; }; template<> struct numeric_limits<unsigned __int128> { static constexpr bool is_specialized = true; static constexpr unsigned __int128 min() noexcept { return 0; } static constexpr unsigned __int128 max() noexcept { return (((unsigned __int128)(-1) < 0) ? (((((unsigned __int128)1 << ((128 - ((unsigned __int128)(-1) < 0)) - 1)) - 1) << 1) + 1) : ~(unsigned __int128)0); } static constexpr unsigned __int128 lowest() noexcept { return min(); } static constexpr int max_digits10 = 0; static constexpr int digits = 128; static constexpr int digits10 = 128 * 643L / 2136; static constexpr bool is_signed = false; static constexpr bool is_integer = true; static constexpr bool is_exact = true; static constexpr int radix = 2; static constexpr unsigned __int128 epsilon() noexcept { return 0; } static constexpr unsigned __int128 round_error() noexcept { return 0; } static constexpr int min_exponent = 0; static constexpr int min_exponent10 = 0; static constexpr int max_exponent = 0; static constexpr int max_exponent10 = 0; static constexpr bool has_infinity = false; static constexpr bool has_quiet_NaN = false; static constexpr bool has_signaling_NaN = false; static constexpr float_denorm_style has_denorm = denorm_absent; static constexpr bool has_denorm_loss = false; static constexpr unsigned __int128 infinity() noexcept { return static_cast<unsigned __int128>(0); } static constexpr unsigned __int128 quiet_NaN() noexcept { return static_cast<unsigned __int128>(0); } static constexpr unsigned __int128 signaling_NaN() noexcept { return static_cast<unsigned __int128>(0); } static constexpr unsigned __int128 denorm_min() noexcept { return static_cast<unsigned __int128>(0); } static constexpr bool is_iec559 = false; static constexpr bool is_bounded = true; static constexpr bool is_modulo = true; static constexpr bool traps = true; static constexpr bool tinyness_before = false; static constexpr float_round_style round_style = round_toward_zero; };
+  template<>
+    struct numeric_limits<float>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr float
+      min() noexcept { return 1.17549435082228750796873653722224568e-38F; }
+
+      static constexpr float
+      max() noexcept { return 3.40282346638528859811704183484516925e+38F; }
+
+
+      static constexpr float
+      lowest() noexcept { return -3.40282346638528859811704183484516925e+38F; }
+
+
+      static constexpr int digits = 24;
+      static constexpr int digits10 = 6;
+
+      static constexpr int max_digits10
+  = (2 + (24) * 643L / 2136);
+
+      static constexpr bool is_signed = true;
+      static constexpr bool is_integer = false;
+      static constexpr bool is_exact = false;
+      static constexpr int radix = 2;
+
+      static constexpr float
+      epsilon() noexcept { return 1.19209289550781250000000000000000000e-7F; }
+
+      static constexpr float
+      round_error() noexcept { return 0.5F; }
+
+      static constexpr int min_exponent = (-125);
+      static constexpr int min_exponent10 = (-37);
+      static constexpr int max_exponent = 128;
+      static constexpr int max_exponent10 = 38;
+
+      static constexpr bool has_infinity = 1;
+      static constexpr bool has_quiet_NaN = 1;
+      static constexpr bool has_signaling_NaN = has_quiet_NaN;
+      static constexpr float_denorm_style has_denorm
+ = bool(1) ? denorm_present : denorm_absent;
+      static constexpr bool has_denorm_loss
+       = false;
+
+      static constexpr float
+      infinity() noexcept { return __builtin_huge_valf(); }
+
+      static constexpr float
+      quiet_NaN() noexcept { return __builtin_nanf(""); }
+
+      static constexpr float
+      signaling_NaN() noexcept { return __builtin_nansf(""); }
+
+      static constexpr float
+      denorm_min() noexcept { return 1.40129846432481707092372958328991613e-45F; }
+
+      static constexpr bool is_iec559
+ = has_infinity && has_quiet_NaN && has_denorm == denorm_present;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = false;
+
+      static constexpr bool traps = false;
+      static constexpr bool tinyness_before
+       = false;
+      static constexpr float_round_style round_style
+       = round_to_nearest;
+    };
+
+
+
+
+
+
+  template<>
+    struct numeric_limits<double>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr double
+      min() noexcept { return double(2.22507385850720138309023271733240406e-308L); }
+
+      static constexpr double
+      max() noexcept { return double(1.79769313486231570814527423731704357e+308L); }
+
+
+      static constexpr double
+      lowest() noexcept { return -double(1.79769313486231570814527423731704357e+308L); }
+
+
+      static constexpr int digits = 53;
+      static constexpr int digits10 = 15;
+
+      static constexpr int max_digits10
+  = (2 + (53) * 643L / 2136);
+
+      static constexpr bool is_signed = true;
+      static constexpr bool is_integer = false;
+      static constexpr bool is_exact = false;
+      static constexpr int radix = 2;
+
+      static constexpr double
+      epsilon() noexcept { return double(2.22044604925031308084726333618164062e-16L); }
+
+      static constexpr double
+      round_error() noexcept { return 0.5; }
+
+      static constexpr int min_exponent = (-1021);
+      static constexpr int min_exponent10 = (-307);
+      static constexpr int max_exponent = 1024;
+      static constexpr int max_exponent10 = 308;
+
+      static constexpr bool has_infinity = 1;
+      static constexpr bool has_quiet_NaN = 1;
+      static constexpr bool has_signaling_NaN = has_quiet_NaN;
+      static constexpr float_denorm_style has_denorm
+ = bool(1) ? denorm_present : denorm_absent;
+      static constexpr bool has_denorm_loss
+        = false;
+
+      static constexpr double
+      infinity() noexcept { return __builtin_huge_val(); }
+
+      static constexpr double
+      quiet_NaN() noexcept { return __builtin_nan(""); }
+
+      static constexpr double
+      signaling_NaN() noexcept { return __builtin_nans(""); }
+
+      static constexpr double
+      denorm_min() noexcept { return double(4.94065645841246544176568792868221372e-324L); }
+
+      static constexpr bool is_iec559
+ = has_infinity && has_quiet_NaN && has_denorm == denorm_present;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = false;
+
+      static constexpr bool traps = false;
+      static constexpr bool tinyness_before
+       = false;
+      static constexpr float_round_style round_style
+       = round_to_nearest;
+    };
+
+
+
+
+
+
+  template<>
+    struct numeric_limits<long double>
+    {
+      static constexpr bool is_specialized = true;
+
+      static constexpr long double
+      min() noexcept { return 3.36210314311209350626267781732175260e-4932L; }
+
+      static constexpr long double
+      max() noexcept { return 1.18973149535723176502126385303097021e+4932L; }
+
+
+      static constexpr long double
+      lowest() noexcept { return -1.18973149535723176502126385303097021e+4932L; }
+
+
+      static constexpr int digits = 64;
+      static constexpr int digits10 = 18;
+
+      static constexpr int max_digits10
+  = (2 + (64) * 643L / 2136);
+
+      static constexpr bool is_signed = true;
+      static constexpr bool is_integer = false;
+      static constexpr bool is_exact = false;
+      static constexpr int radix = 2;
+
+      static constexpr long double
+      epsilon() noexcept { return 1.08420217248550443400745280086994171e-19L; }
+
+      static constexpr long double
+      round_error() noexcept { return 0.5L; }
+
+      static constexpr int min_exponent = (-16381);
+      static constexpr int min_exponent10 = (-4931);
+      static constexpr int max_exponent = 16384;
+      static constexpr int max_exponent10 = 4932;
+
+      static constexpr bool has_infinity = 1;
+      static constexpr bool has_quiet_NaN = 1;
+      static constexpr bool has_signaling_NaN = has_quiet_NaN;
+      static constexpr float_denorm_style has_denorm
+ = bool(1) ? denorm_present : denorm_absent;
+      static constexpr bool has_denorm_loss
+ = false;
+
+      static constexpr long double
+      infinity() noexcept { return __builtin_huge_vall(); }
+
+      static constexpr long double
+      quiet_NaN() noexcept { return __builtin_nanl(""); }
+
+      static constexpr long double
+      signaling_NaN() noexcept { return __builtin_nansl(""); }
+
+      static constexpr long double
+      denorm_min() noexcept { return 3.64519953188247460252840593361941982e-4951L; }
+
+      static constexpr bool is_iec559
+ = has_infinity && has_quiet_NaN && has_denorm == denorm_present;
+      static constexpr bool is_bounded = true;
+      static constexpr bool is_modulo = false;
+
+      static constexpr bool traps = false;
+      static constexpr bool tinyness_before =
+      false;
+      static constexpr float_round_style round_style =
+            round_to_nearest;
+    };
+
+
+
+
+
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  namespace __detail
+  {
+
+    template<typename _Tp>
+      inline bool
+      _Power_of_2(_Tp __x)
+      {
+ return ((__x - 1) & __x) == 0;
+      }
+  }
+
+
+
+
+
+
+  template<typename _IntType = int>
+    class uniform_int_distribution
+    {
+      static_assert(std::is_integral<_IntType>::value,
+      "template argument must be an integral type");
+
+    public:
+
+      typedef _IntType result_type;
+
+      struct param_type
+      {
+ typedef uniform_int_distribution<_IntType> distribution_type;
+
+ explicit
+ param_type(_IntType __a = 0,
+     _IntType __b = std::numeric_limits<_IntType>::max())
+ : _M_a(__a), _M_b(__b)
+ {
+   ;
+ }
+
+ result_type
+ a() const
+ { return _M_a; }
+
+ result_type
+ b() const
+ { return _M_b; }
+
+ friend bool
+ operator==(const param_type& __p1, const param_type& __p2)
+ { return __p1._M_a == __p2._M_a && __p1._M_b == __p2._M_b; }
+
+ friend bool
+ operator!=(const param_type& __p1, const param_type& __p2)
+ { return !(__p1 == __p2); }
+
+      private:
+ _IntType _M_a;
+ _IntType _M_b;
+      };
+
+    public:
+
+
+
+      explicit
+      uniform_int_distribution(_IntType __a = 0,
+      _IntType __b = std::numeric_limits<_IntType>::max())
+      : _M_param(__a, __b)
+      { }
+
+      explicit
+      uniform_int_distribution(const param_type& __p)
+      : _M_param(__p)
+      { }
+
+
+
+
+
+
+      void
+      reset() { }
+
+      result_type
+      a() const
+      { return _M_param.a(); }
+
+      result_type
+      b() const
+      { return _M_param.b(); }
+
+
+
+
+      param_type
+      param() const
+      { return _M_param; }
+
+
+
+
+
+      void
+      param(const param_type& __param)
+      { _M_param = __param; }
+
+
+
+
+      result_type
+      min() const
+      { return this->a(); }
+
+
+
+
+      result_type
+      max() const
+      { return this->b(); }
+
+
+
+
+      template<typename _UniformRandomNumberGenerator>
+ result_type
+ operator()(_UniformRandomNumberGenerator& __urng)
+        { return this->operator()(__urng, _M_param); }
+
+      template<typename _UniformRandomNumberGenerator>
+ result_type
+ operator()(_UniformRandomNumberGenerator& __urng,
+     const param_type& __p);
+
+      template<typename _ForwardIterator,
+        typename _UniformRandomNumberGenerator>
+ void
+ __generate(_ForwardIterator __f, _ForwardIterator __t,
+     _UniformRandomNumberGenerator& __urng)
+ { this->__generate(__f, __t, __urng, _M_param); }
+
+      template<typename _ForwardIterator,
+        typename _UniformRandomNumberGenerator>
+ void
+ __generate(_ForwardIterator __f, _ForwardIterator __t,
+     _UniformRandomNumberGenerator& __urng,
+     const param_type& __p)
+ { this->__generate_impl(__f, __t, __urng, __p); }
+
+      template<typename _UniformRandomNumberGenerator>
+ void
+ __generate(result_type* __f, result_type* __t,
+     _UniformRandomNumberGenerator& __urng,
+     const param_type& __p)
+ { this->__generate_impl(__f, __t, __urng, __p); }
+
+
+
+
+
+      friend bool
+      operator==(const uniform_int_distribution& __d1,
+   const uniform_int_distribution& __d2)
+      { return __d1._M_param == __d2._M_param; }
+
+    private:
+      template<typename _ForwardIterator,
+        typename _UniformRandomNumberGenerator>
+ void
+ __generate_impl(_ForwardIterator __f, _ForwardIterator __t,
+   _UniformRandomNumberGenerator& __urng,
+   const param_type& __p);
+
+      param_type _M_param;
+    };
+
+  template<typename _IntType>
+    template<typename _UniformRandomNumberGenerator>
+      typename uniform_int_distribution<_IntType>::result_type
+      uniform_int_distribution<_IntType>::
+      operator()(_UniformRandomNumberGenerator& __urng,
+   const param_type& __param)
+      {
+ typedef typename _UniformRandomNumberGenerator::result_type
+   _Gresult_type;
+ typedef typename std::make_unsigned<result_type>::type __utype;
+ typedef typename std::common_type<_Gresult_type, __utype>::type
+   __uctype;
+
+ const __uctype __urngmin = __urng.min();
+ const __uctype __urngmax = __urng.max();
+ const __uctype __urngrange = __urngmax - __urngmin;
+ const __uctype __urange
+   = __uctype(__param.b()) - __uctype(__param.a());
+
+ __uctype __ret;
+
+ if (__urngrange > __urange)
+   {
+
+     const __uctype __uerange = __urange + 1;
+     const __uctype __scaling = __urngrange / __uerange;
+     const __uctype __past = __uerange * __scaling;
+     do
+       __ret = __uctype(__urng()) - __urngmin;
+     while (__ret >= __past);
+     __ret /= __scaling;
+   }
+ else if (__urngrange < __urange)
+   {
+     __uctype __tmp;
+     do
+       {
+  const __uctype __uerngrange = __urngrange + 1;
+  __tmp = (__uerngrange * operator()
+    (__urng, param_type(0, __urange / __uerngrange)));
+  __ret = __tmp + (__uctype(__urng()) - __urngmin);
+       }
+     while (__ret > __urange || __ret < __tmp);
+   }
+ else
+   __ret = __uctype(__urng()) - __urngmin;
+
+ return __ret + __param.a();
+      }
+
+
+  template<typename _IntType>
+    template<typename _ForwardIterator,
+      typename _UniformRandomNumberGenerator>
+      void
+      uniform_int_distribution<_IntType>::
+      __generate_impl(_ForwardIterator __f, _ForwardIterator __t,
+        _UniformRandomNumberGenerator& __urng,
+        const param_type& __param)
+      {
+
+ typedef typename _UniformRandomNumberGenerator::result_type
+   _Gresult_type;
+ typedef typename std::make_unsigned<result_type>::type __utype;
+ typedef typename std::common_type<_Gresult_type, __utype>::type
+   __uctype;
+
+ const __uctype __urngmin = __urng.min();
+ const __uctype __urngmax = __urng.max();
+ const __uctype __urngrange = __urngmax - __urngmin;
+ const __uctype __urange
+   = __uctype(__param.b()) - __uctype(__param.a());
+
+ __uctype __ret;
+
+ if (__urngrange > __urange)
+   {
+     if (__detail::_Power_of_2(__urngrange + 1)
+  && __detail::_Power_of_2(__urange + 1))
+       {
+  while (__f != __t)
+    {
+      __ret = __uctype(__urng()) - __urngmin;
+      *__f++ = (__ret & __urange) + __param.a();
+    }
+       }
+     else
+       {
+
+  const __uctype __uerange = __urange + 1;
+  const __uctype __scaling = __urngrange / __uerange;
+  const __uctype __past = __uerange * __scaling;
+  while (__f != __t)
+    {
+      do
+        __ret = __uctype(__urng()) - __urngmin;
+      while (__ret >= __past);
+      *__f++ = __ret / __scaling + __param.a();
+    }
+       }
+   }
+ else if (__urngrange < __urange)
+   {
+     __uctype __tmp;
+     while (__f != __t)
+       {
+  do
+    {
+      const __uctype __uerngrange = __urngrange + 1;
+      __tmp = (__uerngrange * operator()
+        (__urng, param_type(0, __urange / __uerngrange)));
+      __ret = __tmp + (__uctype(__urng()) - __urngmin);
+    }
+  while (__ret > __urange || __ret < __tmp);
+  *__f++ = __ret;
+       }
+   }
+ else
+   while (__f != __t)
+     *__f++ = __uctype(__urng()) - __urngmin + __param.a();
+      }
+
+
+
+
+}
+
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+  template<typename _Iterator, typename _Compare>
+    void
+    __move_median_to_first(_Iterator __result,_Iterator __a, _Iterator __b,
+      _Iterator __c, _Compare __comp)
+    {
+      if (__comp(__a, __b))
+ {
+   if (__comp(__b, __c))
+     std::iter_swap(__result, __b);
+   else if (__comp(__a, __c))
+     std::iter_swap(__result, __c);
+   else
+     std::iter_swap(__result, __a);
+ }
+      else if (__comp(__a, __c))
+ std::iter_swap(__result, __a);
+      else if (__comp(__b, __c))
+ std::iter_swap(__result, __c);
+      else
+ std::iter_swap(__result, __b);
+    }
+
+
+  template<typename _InputIterator, typename _Predicate>
+    inline _InputIterator
+    __find_if(_InputIterator __first, _InputIterator __last,
+       _Predicate __pred, input_iterator_tag)
+    {
+      while (__first != __last && !__pred(__first))
+ ++__first;
+      return __first;
+    }
+
+
+  template<typename _RandomAccessIterator, typename _Predicate>
+    _RandomAccessIterator
+    __find_if(_RandomAccessIterator __first, _RandomAccessIterator __last,
+       _Predicate __pred, random_access_iterator_tag)
+    {
+      typename iterator_traits<_RandomAccessIterator>::difference_type
+ __trip_count = (__last - __first) >> 2;
+
+      for (; __trip_count > 0; --__trip_count)
+ {
+   if (__pred(__first))
+     return __first;
+   ++__first;
+
+   if (__pred(__first))
+     return __first;
+   ++__first;
+
+   if (__pred(__first))
+     return __first;
+   ++__first;
+
+   if (__pred(__first))
+     return __first;
+   ++__first;
+ }
+
+      switch (__last - __first)
+ {
+ case 3:
+   if (__pred(__first))
+     return __first;
+   ++__first;
+ case 2:
+   if (__pred(__first))
+     return __first;
+   ++__first;
+ case 1:
+   if (__pred(__first))
+     return __first;
+   ++__first;
+ case 0:
+ default:
+   return __last;
+ }
+    }
+
+  template<typename _Iterator, typename _Predicate>
+    inline _Iterator
+    __find_if(_Iterator __first, _Iterator __last, _Predicate __pred)
+    {
+      return __find_if(__first, __last, __pred,
+         std::__iterator_category(__first));
+    }
+
+
+  template<typename _InputIterator, typename _Predicate>
+    inline _InputIterator
+    __find_if_not(_InputIterator __first, _InputIterator __last,
+    _Predicate __pred)
+    {
+      return std::__find_if(__first, __last,
+       __gnu_cxx::__ops::__negate(__pred),
+       std::__iterator_category(__first));
+    }
+
+
+
+
+  template<typename _InputIterator, typename _Predicate, typename _Distance>
+    _InputIterator
+    __find_if_not_n(_InputIterator __first, _Distance& __len, _Predicate __pred)
+    {
+      for (; __len; --__len, (void) ++__first)
+ if (!__pred(__first))
+   break;
+      return __first;
+    }
+  template<typename _ForwardIterator1, typename _ForwardIterator2,
+    typename _BinaryPredicate>
+    _ForwardIterator1
+    __search(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+      _ForwardIterator2 __first2, _ForwardIterator2 __last2,
+      _BinaryPredicate __predicate)
+    {
+
+      if (__first1 == __last1 || __first2 == __last2)
+ return __first1;
+
+
+      _ForwardIterator2 __p1(__first2);
+      if (++__p1 == __last2)
+ return std::__find_if(__first1, __last1,
+  __gnu_cxx::__ops::__iter_comp_iter(__predicate, __first2));
+
+
+      _ForwardIterator2 __p;
+      _ForwardIterator1 __current = __first1;
+
+      for (;;)
+ {
+   __first1 =
+     std::__find_if(__first1, __last1,
+  __gnu_cxx::__ops::__iter_comp_iter(__predicate, __first2));
+
+   if (__first1 == __last1)
+     return __last1;
+
+   __p = __p1;
+   __current = __first1;
+   if (++__current == __last1)
+     return __last1;
+
+   while (__predicate(__current, __p))
+     {
+       if (++__p == __last2)
+  return __first1;
+       if (++__current == __last1)
+  return __last1;
+     }
+   ++__first1;
+ }
+      return __first1;
+    }
+
+
+
+
+
+
+  template<typename _ForwardIterator, typename _Integer,
+    typename _UnaryPredicate>
+    _ForwardIterator
+    __search_n_aux(_ForwardIterator __first, _ForwardIterator __last,
+     _Integer __count, _UnaryPredicate __unary_pred,
+     std::forward_iterator_tag)
+    {
+      __first = std::__find_if(__first, __last, __unary_pred);
+      while (__first != __last)
+ {
+   typename iterator_traits<_ForwardIterator>::difference_type
+     __n = __count;
+   _ForwardIterator __i = __first;
+   ++__i;
+   while (__i != __last && __n != 1 && __unary_pred(__i))
+     {
+       ++__i;
+       --__n;
+     }
+   if (__n == 1)
+     return __first;
+   if (__i == __last)
+     return __last;
+   __first = std::__find_if(++__i, __last, __unary_pred);
+ }
+      return __last;
+    }
+
+
+
+
+
+  template<typename _RandomAccessIter, typename _Integer,
+    typename _UnaryPredicate>
+    _RandomAccessIter
+    __search_n_aux(_RandomAccessIter __first, _RandomAccessIter __last,
+     _Integer __count, _UnaryPredicate __unary_pred,
+     std::random_access_iterator_tag)
+    {
+      typedef typename std::iterator_traits<_RandomAccessIter>::difference_type
+ _DistanceType;
+
+      _DistanceType __tailSize = __last - __first;
+      _DistanceType __remainder = __count;
+
+      while (__remainder <= __tailSize)
+ {
+   __first += __remainder;
+   __tailSize -= __remainder;
+
+
+   _RandomAccessIter __backTrack = __first;
+   while (__unary_pred(--__backTrack))
+     {
+       if (--__remainder == 0)
+  return (__first - __count);
+     }
+   __remainder = __count + 1 - (__first - __backTrack);
+ }
+      return __last;
+    }
+
+  template<typename _ForwardIterator, typename _Integer,
+    typename _UnaryPredicate>
+    _ForwardIterator
+    __search_n(_ForwardIterator __first, _ForwardIterator __last,
+        _Integer __count,
+        _UnaryPredicate __unary_pred)
+    {
+      if (__count <= 0)
+ return __first;
+
+      if (__count == 1)
+ return std::__find_if(__first, __last, __unary_pred);
+
+      return std::__search_n_aux(__first, __last, __count, __unary_pred,
+     std::__iterator_category(__first));
+    }
+
+
+  template<typename _ForwardIterator1, typename _ForwardIterator2,
+    typename _BinaryPredicate>
+    _ForwardIterator1
+    __find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+        _ForwardIterator2 __first2, _ForwardIterator2 __last2,
+        forward_iterator_tag, forward_iterator_tag,
+        _BinaryPredicate __comp)
+    {
+      if (__first2 == __last2)
+ return __last1;
+
+      _ForwardIterator1 __result = __last1;
+      while (1)
+ {
+   _ForwardIterator1 __new_result
+     = std::__search(__first1, __last1, __first2, __last2, __comp);
+   if (__new_result == __last1)
+     return __result;
+   else
+     {
+       __result = __new_result;
+       __first1 = __new_result;
+       ++__first1;
+     }
+ }
+    }
+
+
+  template<typename _BidirectionalIterator1, typename _BidirectionalIterator2,
+    typename _BinaryPredicate>
+    _BidirectionalIterator1
+    __find_end(_BidirectionalIterator1 __first1,
+        _BidirectionalIterator1 __last1,
+        _BidirectionalIterator2 __first2,
+        _BidirectionalIterator2 __last2,
+        bidirectional_iterator_tag, bidirectional_iterator_tag,
+        _BinaryPredicate __comp)
+    {
+
+     
+
+     
+
+
+      typedef reverse_iterator<_BidirectionalIterator1> _RevIterator1;
+      typedef reverse_iterator<_BidirectionalIterator2> _RevIterator2;
+
+      _RevIterator1 __rlast1(__first1);
+      _RevIterator2 __rlast2(__first2);
+      _RevIterator1 __rresult = std::__search(_RevIterator1(__last1), __rlast1,
+           _RevIterator2(__last2), __rlast2,
+           __comp);
+
+      if (__rresult == __rlast1)
+ return __last1;
+      else
+ {
+   _BidirectionalIterator1 __result = __rresult.base();
+   std::advance(__result, -std::distance(__first2, __last2));
+   return __result;
+ }
+    }
+  template<typename _ForwardIterator1, typename _ForwardIterator2>
+    inline _ForwardIterator1
+    find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+      _ForwardIterator2 __first2, _ForwardIterator2 __last2)
+    {
+
+     
+     
+     
+
+
+      ;
+      ;
+
+      return std::__find_end(__first1, __last1, __first2, __last2,
+        std::__iterator_category(__first1),
+        std::__iterator_category(__first2),
+        __gnu_cxx::__ops::__iter_equal_to_iter());
+    }
+  template<typename _ForwardIterator1, typename _ForwardIterator2,
+    typename _BinaryPredicate>
+    inline _ForwardIterator1
+    find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+      _ForwardIterator2 __first2, _ForwardIterator2 __last2,
+      _BinaryPredicate __comp)
+    {
+
+     
+     
+     
+
+
+      ;
+      ;
+
+      return std::__find_end(__first1, __last1, __first2, __last2,
+        std::__iterator_category(__first1),
+        std::__iterator_category(__first2),
+        __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+  template<typename _InputIterator, typename _Predicate>
+    inline bool
+    all_of(_InputIterator __first, _InputIterator __last, _Predicate __pred)
+    { return __last == std::find_if_not(__first, __last, __pred); }
+  template<typename _InputIterator, typename _Predicate>
+    inline bool
+    none_of(_InputIterator __first, _InputIterator __last, _Predicate __pred)
+    { return __last == std::find_if(__first, __last, __pred); }
+  template<typename _InputIterator, typename _Predicate>
+    inline bool
+    any_of(_InputIterator __first, _InputIterator __last, _Predicate __pred)
+    { return !std::none_of(__first, __last, __pred); }
+  template<typename _InputIterator, typename _Predicate>
+    inline _InputIterator
+    find_if_not(_InputIterator __first, _InputIterator __last,
+  _Predicate __pred)
+    {
+
+     
+     
+
+      ;
+      return std::__find_if_not(__first, __last,
+    __gnu_cxx::__ops::__pred_iter(__pred));
+    }
+  template<typename _InputIterator, typename _Predicate>
+    inline bool
+    is_partitioned(_InputIterator __first, _InputIterator __last,
+     _Predicate __pred)
+    {
+      __first = std::find_if_not(__first, __last, __pred);
+      if (__first == __last)
+ return true;
+      ++__first;
+      return std::none_of(__first, __last, __pred);
+    }
+  template<typename _ForwardIterator, typename _Predicate>
+    _ForwardIterator
+    partition_point(_ForwardIterator __first, _ForwardIterator __last,
+      _Predicate __pred)
+    {
+
+     
+     
+
+
+
+      ;
+
+      typedef typename iterator_traits<_ForwardIterator>::difference_type
+ _DistanceType;
+
+      _DistanceType __len = std::distance(__first, __last);
+      _DistanceType __half;
+      _ForwardIterator __middle;
+
+      while (__len > 0)
+ {
+   __half = __len >> 1;
+   __middle = __first;
+   std::advance(__middle, __half);
+   if (__pred(*__middle))
+     {
+       __first = __middle;
+       ++__first;
+       __len = __len - __half - 1;
+     }
+   else
+     __len = __half;
+ }
+      return __first;
+    }
+
+
+  template<typename _InputIterator, typename _OutputIterator,
+    typename _Predicate>
+    _OutputIterator
+    __remove_copy_if(_InputIterator __first, _InputIterator __last,
+       _OutputIterator __result, _Predicate __pred)
+    {
+      for (; __first != __last; ++__first)
+ if (!__pred(__first))
+   {
+     *__result = *__first;
+     ++__result;
+   }
+      return __result;
+    }
+  template<typename _InputIterator, typename _OutputIterator, typename _Tp>
+    inline _OutputIterator
+    remove_copy(_InputIterator __first, _InputIterator __last,
+  _OutputIterator __result, const _Tp& __value)
+    {
+
+     
+     
+
+     
+
+      ;
+
+      return std::__remove_copy_if(__first, __last, __result,
+ __gnu_cxx::__ops::__iter_equals_val(__value));
+    }
+  template<typename _InputIterator, typename _OutputIterator,
+    typename _Predicate>
+    inline _OutputIterator
+    remove_copy_if(_InputIterator __first, _InputIterator __last,
+     _OutputIterator __result, _Predicate __pred)
+    {
+
+     
+     
+
+     
+
+      ;
+
+      return std::__remove_copy_if(__first, __last, __result,
+       __gnu_cxx::__ops::__pred_iter(__pred));
+    }
+  template<typename _InputIterator, typename _OutputIterator,
+    typename _Predicate>
+    _OutputIterator
+    copy_if(_InputIterator __first, _InputIterator __last,
+     _OutputIterator __result, _Predicate __pred)
+    {
+
+     
+     
+
+     
+
+      ;
+
+      for (; __first != __last; ++__first)
+ if (__pred(*__first))
+   {
+     *__result = *__first;
+     ++__result;
+   }
+      return __result;
+    }
+
+  template<typename _InputIterator, typename _Size, typename _OutputIterator>
+    _OutputIterator
+    __copy_n(_InputIterator __first, _Size __n,
+      _OutputIterator __result, input_iterator_tag)
+    {
+      if (__n > 0)
+ {
+   while (true)
+     {
+       *__result = *__first;
+       ++__result;
+       if (--__n > 0)
+  ++__first;
+       else
+  break;
+     }
+ }
+      return __result;
+    }
+
+  template<typename _RandomAccessIterator, typename _Size,
+    typename _OutputIterator>
+    inline _OutputIterator
+    __copy_n(_RandomAccessIterator __first, _Size __n,
+      _OutputIterator __result, random_access_iterator_tag)
+    { return std::copy(__first, __first + __n, __result); }
+  template<typename _InputIterator, typename _Size, typename _OutputIterator>
+    inline _OutputIterator
+    copy_n(_InputIterator __first, _Size __n, _OutputIterator __result)
+    {
+
+     
+     
+
+
+      return std::__copy_n(__first, __n, __result,
+      std::__iterator_category(__first));
+    }
+  template<typename _InputIterator, typename _OutputIterator1,
+    typename _OutputIterator2, typename _Predicate>
+    pair<_OutputIterator1, _OutputIterator2>
+    partition_copy(_InputIterator __first, _InputIterator __last,
+     _OutputIterator1 __out_true, _OutputIterator2 __out_false,
+     _Predicate __pred)
+    {
+
+     
+     
+
+     
+
+     
+
+      ;
+
+      for (; __first != __last; ++__first)
+ if (__pred(*__first))
+   {
+     *__out_true = *__first;
+     ++__out_true;
+   }
+ else
+   {
+     *__out_false = *__first;
+     ++__out_false;
+   }
+
+      return pair<_OutputIterator1, _OutputIterator2>(__out_true, __out_false);
+    }
+
+
+  template<typename _ForwardIterator, typename _Predicate>
+    _ForwardIterator
+    __remove_if(_ForwardIterator __first, _ForwardIterator __last,
+  _Predicate __pred)
+    {
+      __first = std::__find_if(__first, __last, __pred);
+      if (__first == __last)
+ return __first;
+      _ForwardIterator __result = __first;
+      ++__first;
+      for (; __first != __last; ++__first)
+ if (!__pred(__first))
+   {
+     *__result = std::move(*__first);
+     ++__result;
+   }
+      return __result;
+    }
+  template<typename _ForwardIterator, typename _Tp>
+    inline _ForwardIterator
+    remove(_ForwardIterator __first, _ForwardIterator __last,
+    const _Tp& __value)
+    {
+
+     
+
+     
+
+      ;
+
+      return std::__remove_if(__first, __last,
+  __gnu_cxx::__ops::__iter_equals_val(__value));
+    }
+  template<typename _ForwardIterator, typename _Predicate>
+    inline _ForwardIterator
+    remove_if(_ForwardIterator __first, _ForwardIterator __last,
+       _Predicate __pred)
+    {
+
+     
+
+     
+
+      ;
+
+      return std::__remove_if(__first, __last,
+         __gnu_cxx::__ops::__pred_iter(__pred));
+    }
+
+  template<typename _ForwardIterator, typename _BinaryPredicate>
+    _ForwardIterator
+    __adjacent_find(_ForwardIterator __first, _ForwardIterator __last,
+      _BinaryPredicate __binary_pred)
+    {
+      if (__first == __last)
+ return __last;
+      _ForwardIterator __next = __first;
+      while (++__next != __last)
+ {
+   if (__binary_pred(__first, __next))
+     return __first;
+   __first = __next;
+ }
+      return __last;
+    }
+
+  template<typename _ForwardIterator, typename _BinaryPredicate>
+    _ForwardIterator
+    __unique(_ForwardIterator __first, _ForwardIterator __last,
+      _BinaryPredicate __binary_pred)
+    {
+
+      __first = std::__adjacent_find(__first, __last, __binary_pred);
+      if (__first == __last)
+ return __last;
+
+
+      _ForwardIterator __dest = __first;
+      ++__first;
+      while (++__first != __last)
+ if (!__binary_pred(__dest, __first))
+   *++__dest = std::move(*__first);
+      return ++__dest;
+    }
+  template<typename _ForwardIterator>
+    inline _ForwardIterator
+    unique(_ForwardIterator __first, _ForwardIterator __last)
+    {
+
+     
+
+     
+
+      ;
+
+      return std::__unique(__first, __last,
+      __gnu_cxx::__ops::__iter_equal_to_iter());
+    }
+  template<typename _ForwardIterator, typename _BinaryPredicate>
+    inline _ForwardIterator
+    unique(_ForwardIterator __first, _ForwardIterator __last,
+    _BinaryPredicate __binary_pred)
+    {
+
+     
+
+     
+
+
+      ;
+
+      return std::__unique(__first, __last,
+      __gnu_cxx::__ops::__iter_comp_iter(__binary_pred));
+    }
+
+
+
+
+
+
+
+  template<typename _ForwardIterator, typename _OutputIterator,
+    typename _BinaryPredicate>
+    _OutputIterator
+    __unique_copy(_ForwardIterator __first, _ForwardIterator __last,
+    _OutputIterator __result, _BinaryPredicate __binary_pred,
+    forward_iterator_tag, output_iterator_tag)
+    {
+
+     
+
+
+
+      _ForwardIterator __next = __first;
+      *__result = *__first;
+      while (++__next != __last)
+ if (!__binary_pred(__first, __next))
+   {
+     __first = __next;
+     *++__result = *__first;
+   }
+      return ++__result;
+    }
+
+
+
+
+
+
+
+  template<typename _InputIterator, typename _OutputIterator,
+    typename _BinaryPredicate>
+    _OutputIterator
+    __unique_copy(_InputIterator __first, _InputIterator __last,
+    _OutputIterator __result, _BinaryPredicate __binary_pred,
+    input_iterator_tag, output_iterator_tag)
+    {
+
+     
+
+
+
+      typename iterator_traits<_InputIterator>::value_type __value = *__first;
+      __decltype(__gnu_cxx::__ops::__iter_comp_val(__binary_pred))
+ __rebound_pred
+ = __gnu_cxx::__ops::__iter_comp_val(__binary_pred);
+      *__result = __value;
+      while (++__first != __last)
+ if (!__rebound_pred(__first, __value))
+   {
+     __value = *__first;
+     *++__result = __value;
+   }
+      return ++__result;
+    }
+
+
+
+
+
+
+
+  template<typename _InputIterator, typename _ForwardIterator,
+    typename _BinaryPredicate>
+    _ForwardIterator
+    __unique_copy(_InputIterator __first, _InputIterator __last,
+    _ForwardIterator __result, _BinaryPredicate __binary_pred,
+    input_iterator_tag, forward_iterator_tag)
+    {
+
+     
+
+
+      *__result = *__first;
+      while (++__first != __last)
+ if (!__binary_pred(__result, __first))
+   *++__result = *__first;
+      return ++__result;
+    }
+
+
+
+
+
+
+  template<typename _BidirectionalIterator>
+    void
+    __reverse(_BidirectionalIterator __first, _BidirectionalIterator __last,
+       bidirectional_iterator_tag)
+    {
+      while (true)
+ if (__first == __last || __first == --__last)
+   return;
+ else
+   {
+     std::iter_swap(__first, __last);
+     ++__first;
+   }
+    }
+
+
+
+
+
+
+  template<typename _RandomAccessIterator>
+    void
+    __reverse(_RandomAccessIterator __first, _RandomAccessIterator __last,
+       random_access_iterator_tag)
+    {
+      if (__first == __last)
+ return;
+      --__last;
+      while (__first < __last)
+ {
+   std::iter_swap(__first, __last);
+   ++__first;
+   --__last;
+ }
+    }
+  template<typename _BidirectionalIterator>
+    inline void
+    reverse(_BidirectionalIterator __first, _BidirectionalIterator __last)
+    {
+
+     
+
+      ;
+      std::__reverse(__first, __last, std::__iterator_category(__first));
+    }
+  template<typename _BidirectionalIterator, typename _OutputIterator>
+    _OutputIterator
+    reverse_copy(_BidirectionalIterator __first, _BidirectionalIterator __last,
+   _OutputIterator __result)
+    {
+
+     
+
+     
+
+      ;
+
+      while (__first != __last)
+ {
+   --__last;
+   *__result = *__last;
+   ++__result;
+ }
+      return __result;
+    }
+
+
+
+
+
+  template<typename _EuclideanRingElement>
+    _EuclideanRingElement
+    __gcd(_EuclideanRingElement __m, _EuclideanRingElement __n)
+    {
+      while (__n != 0)
+ {
+   _EuclideanRingElement __t = __m % __n;
+   __m = __n;
+   __n = __t;
+ }
+      return __m;
+    }
+
+  inline namespace _V2
+  {
+
+
+  template<typename _ForwardIterator>
+    _ForwardIterator
+    __rotate(_ForwardIterator __first,
+      _ForwardIterator __middle,
+      _ForwardIterator __last,
+      forward_iterator_tag)
+    {
+      if (__first == __middle)
+ return __last;
+      else if (__last == __middle)
+ return __first;
+
+      _ForwardIterator __first2 = __middle;
+      do
+ {
+   std::iter_swap(__first, __first2);
+   ++__first;
+   ++__first2;
+   if (__first == __middle)
+     __middle = __first2;
+ }
+      while (__first2 != __last);
+
+      _ForwardIterator __ret = __first;
+
+      __first2 = __middle;
+
+      while (__first2 != __last)
+ {
+   std::iter_swap(__first, __first2);
+   ++__first;
+   ++__first2;
+   if (__first == __middle)
+     __middle = __first2;
+   else if (__first2 == __last)
+     __first2 = __middle;
+ }
+      return __ret;
+    }
+
+
+  template<typename _BidirectionalIterator>
+    _BidirectionalIterator
+    __rotate(_BidirectionalIterator __first,
+      _BidirectionalIterator __middle,
+      _BidirectionalIterator __last,
+       bidirectional_iterator_tag)
+    {
+
+     
+
+
+      if (__first == __middle)
+ return __last;
+      else if (__last == __middle)
+ return __first;
+
+      std::__reverse(__first, __middle, bidirectional_iterator_tag());
+      std::__reverse(__middle, __last, bidirectional_iterator_tag());
+
+      while (__first != __middle && __middle != __last)
+ {
+   std::iter_swap(__first, --__last);
+   ++__first;
+ }
+
+      if (__first == __middle)
+ {
+   std::__reverse(__middle, __last, bidirectional_iterator_tag());
+   return __last;
+ }
+      else
+ {
+   std::__reverse(__first, __middle, bidirectional_iterator_tag());
+   return __first;
+ }
+    }
+
+
+  template<typename _RandomAccessIterator>
+    _RandomAccessIterator
+    __rotate(_RandomAccessIterator __first,
+      _RandomAccessIterator __middle,
+      _RandomAccessIterator __last,
+      random_access_iterator_tag)
+    {
+
+     
+
+
+      if (__first == __middle)
+ return __last;
+      else if (__last == __middle)
+ return __first;
+
+      typedef typename iterator_traits<_RandomAccessIterator>::difference_type
+ _Distance;
+      typedef typename iterator_traits<_RandomAccessIterator>::value_type
+ _ValueType;
+
+      _Distance __n = __last - __first;
+      _Distance __k = __middle - __first;
+
+      if (__k == __n - __k)
+ {
+   std::swap_ranges(__first, __middle, __middle);
+   return __middle;
+ }
+
+      _RandomAccessIterator __p = __first;
+      _RandomAccessIterator __ret = __first + (__last - __middle);
+
+      for (;;)
+ {
+   if (__k < __n - __k)
+     {
+       if (__is_pod(_ValueType) && __k == 1)
+  {
+    _ValueType __t = std::move(*__p);
+    std::move(__p + 1, __p + __n, __p);
+    *(__p + __n - 1) = std::move(__t);
+    return __ret;
+  }
+       _RandomAccessIterator __q = __p + __k;
+       for (_Distance __i = 0; __i < __n - __k; ++ __i)
+  {
+    std::iter_swap(__p, __q);
+    ++__p;
+    ++__q;
+  }
+       __n %= __k;
+       if (__n == 0)
+  return __ret;
+       std::swap(__n, __k);
+       __k = __n - __k;
+     }
+   else
+     {
+       __k = __n - __k;
+       if (__is_pod(_ValueType) && __k == 1)
+  {
+    _ValueType __t = std::move(*(__p + __n - 1));
+    std::move_backward(__p, __p + __n - 1, __p + __n);
+    *__p = std::move(__t);
+    return __ret;
+  }
+       _RandomAccessIterator __q = __p + __n;
+       __p = __q - __k;
+       for (_Distance __i = 0; __i < __n - __k; ++ __i)
+  {
+    --__p;
+    --__q;
+    std::iter_swap(__p, __q);
+  }
+       __n %= __k;
+       if (__n == 0)
+  return __ret;
+       std::swap(__n, __k);
+     }
+ }
+    }
+  template<typename _ForwardIterator>
+    inline _ForwardIterator
+    rotate(_ForwardIterator __first, _ForwardIterator __middle,
+    _ForwardIterator __last)
+    {
+
+     
+
+      ;
+      ;
+
+      return std::__rotate(__first, __middle, __last,
+      std::__iterator_category(__first));
+    }
+
+  }
+  template<typename _ForwardIterator, typename _OutputIterator>
+    inline _OutputIterator
+    rotate_copy(_ForwardIterator __first, _ForwardIterator __middle,
+  _ForwardIterator __last, _OutputIterator __result)
+    {
+
+     
+     
+
+      ;
+      ;
+
+      return std::copy(__first, __middle,
+         std::copy(__middle, __last, __result));
+    }
+
+
+  template<typename _ForwardIterator, typename _Predicate>
+    _ForwardIterator
+    __partition(_ForwardIterator __first, _ForwardIterator __last,
+  _Predicate __pred, forward_iterator_tag)
+    {
+      if (__first == __last)
+ return __first;
+
+      while (__pred(*__first))
+ if (++__first == __last)
+   return __first;
+
+      _ForwardIterator __next = __first;
+
+      while (++__next != __last)
+ if (__pred(*__next))
+   {
+     std::iter_swap(__first, __next);
+     ++__first;
+   }
+
+      return __first;
+    }
+
+
+  template<typename _BidirectionalIterator, typename _Predicate>
+    _BidirectionalIterator
+    __partition(_BidirectionalIterator __first, _BidirectionalIterator __last,
+  _Predicate __pred, bidirectional_iterator_tag)
+    {
+      while (true)
+ {
+   while (true)
+     if (__first == __last)
+       return __first;
+     else if (__pred(*__first))
+       ++__first;
+     else
+       break;
+   --__last;
+   while (true)
+     if (__first == __last)
+       return __first;
+     else if (!bool(__pred(*__last)))
+       --__last;
+     else
+       break;
+   std::iter_swap(__first, __last);
+   ++__first;
+ }
+    }
+  template<typename _ForwardIterator, typename _Pointer, typename _Predicate,
+    typename _Distance>
+    _ForwardIterator
+    __stable_partition_adaptive(_ForwardIterator __first,
+    _ForwardIterator __last,
+    _Predicate __pred, _Distance __len,
+    _Pointer __buffer,
+    _Distance __buffer_size)
+    {
+      if (__len == 1)
+ return __first;
+
+      if (__len <= __buffer_size)
+ {
+   _ForwardIterator __result1 = __first;
+   _Pointer __result2 = __buffer;
+
+
+
+
+   *__result2 = std::move(*__first);
+   ++__result2;
+   ++__first;
+   for (; __first != __last; ++__first)
+     if (__pred(__first))
+       {
+  *__result1 = std::move(*__first);
+  ++__result1;
+       }
+     else
+       {
+  *__result2 = std::move(*__first);
+  ++__result2;
+       }
+
+   std::move(__buffer, __result2, __result1);
+   return __result1;
+ }
+
+      _ForwardIterator __middle = __first;
+      std::advance(__middle, __len / 2);
+      _ForwardIterator __left_split =
+ std::__stable_partition_adaptive(__first, __middle, __pred,
+      __len / 2, __buffer,
+      __buffer_size);
+
+
+
+      _Distance __right_len = __len - __len / 2;
+      _ForwardIterator __right_split =
+ std::__find_if_not_n(__middle, __right_len, __pred);
+
+      if (__right_len)
+ __right_split =
+   std::__stable_partition_adaptive(__right_split, __last, __pred,
+        __right_len,
+        __buffer, __buffer_size);
+
+      std::rotate(__left_split, __middle, __right_split);
+      std::advance(__left_split, std::distance(__middle, __right_split));
+      return __left_split;
+    }
+
+  template<typename _ForwardIterator, typename _Predicate>
+    _ForwardIterator
+    __stable_partition(_ForwardIterator __first, _ForwardIterator __last,
+         _Predicate __pred)
+    {
+      __first = std::__find_if_not(__first, __last, __pred);
+
+      if (__first == __last)
+ return __first;
+
+      typedef typename iterator_traits<_ForwardIterator>::value_type
+ _ValueType;
+      typedef typename iterator_traits<_ForwardIterator>::difference_type
+ _DistanceType;
+
+      _Temporary_buffer<_ForwardIterator, _ValueType> __buf(__first, __last);
+      return
+ std::__stable_partition_adaptive(__first, __last, __pred,
+      _DistanceType(__buf.requested_size()),
+      __buf.begin(),
+      _DistanceType(__buf.size()));
+    }
+  template<typename _ForwardIterator, typename _Predicate>
+    inline _ForwardIterator
+    stable_partition(_ForwardIterator __first, _ForwardIterator __last,
+       _Predicate __pred)
+    {
+
+     
+
+     
+
+      ;
+
+      return std::__stable_partition(__first, __last,
+         __gnu_cxx::__ops::__pred_iter(__pred));
+    }
+
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    void
+    __heap_select(_RandomAccessIterator __first,
+    _RandomAccessIterator __middle,
+    _RandomAccessIterator __last, _Compare __comp)
+    {
+      std::__make_heap(__first, __middle, __comp);
+      for (_RandomAccessIterator __i = __middle; __i < __last; ++__i)
+ if (__comp(__i, __first))
+   std::__pop_heap(__first, __middle, __i, __comp);
+    }
+
+
+
+  template<typename _InputIterator, typename _RandomAccessIterator,
+    typename _Compare>
+    _RandomAccessIterator
+    __partial_sort_copy(_InputIterator __first, _InputIterator __last,
+   _RandomAccessIterator __result_first,
+   _RandomAccessIterator __result_last,
+   _Compare __comp)
+    {
+      typedef typename iterator_traits<_InputIterator>::value_type
+ _InputValueType;
+      typedef iterator_traits<_RandomAccessIterator> _RItTraits;
+      typedef typename _RItTraits::difference_type _DistanceType;
+
+      if (__result_first == __result_last)
+ return __result_last;
+      _RandomAccessIterator __result_real_last = __result_first;
+      while (__first != __last && __result_real_last != __result_last)
+ {
+   *__result_real_last = *__first;
+   ++__result_real_last;
+   ++__first;
+ }
+
+      std::__make_heap(__result_first, __result_real_last, __comp);
+      while (__first != __last)
+ {
+   if (__comp(__first, __result_first))
+     std::__adjust_heap(__result_first, _DistanceType(0),
+          _DistanceType(__result_real_last
+          - __result_first),
+          _InputValueType(*__first), __comp);
+   ++__first;
+ }
+      std::__sort_heap(__result_first, __result_real_last, __comp);
+      return __result_real_last;
+    }
+  template<typename _InputIterator, typename _RandomAccessIterator>
+    inline _RandomAccessIterator
+    partial_sort_copy(_InputIterator __first, _InputIterator __last,
+        _RandomAccessIterator __result_first,
+        _RandomAccessIterator __result_last)
+    {
+     
+     
+
+     
+
+     
+      ;
+      ;
+      ;
+
+      return std::__partial_sort_copy(__first, __last,
+          __result_first, __result_last,
+          __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _InputIterator, typename _RandomAccessIterator,
+    typename _Compare>
+    inline _RandomAccessIterator
+    partial_sort_copy(_InputIterator __first, _InputIterator __last,
+        _RandomAccessIterator __result_first,
+        _RandomAccessIterator __result_last,
+        _Compare __comp)
+    {
+     
+     
+
+     
+
+     
+
+     
+
+      ;
+      ;
+      ;
+
+      return std::__partial_sort_copy(__first, __last,
+          __result_first, __result_last,
+    __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    void
+    __unguarded_linear_insert(_RandomAccessIterator __last,
+         _Compare __comp)
+    {
+      typename iterator_traits<_RandomAccessIterator>::value_type
+ __val = std::move(*__last);
+      _RandomAccessIterator __next = __last;
+      --__next;
+      while (__comp(__val, __next))
+ {
+   *__last = std::move(*__next);
+   __last = __next;
+   --__next;
+ }
+      *__last = std::move(__val);
+    }
+
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    void
+    __insertion_sort(_RandomAccessIterator __first,
+       _RandomAccessIterator __last, _Compare __comp)
+    {
+      if (__first == __last) return;
+
+      for (_RandomAccessIterator __i = __first + 1; __i != __last; ++__i)
+ {
+   if (__comp(__i, __first))
+     {
+       typename iterator_traits<_RandomAccessIterator>::value_type
+  __val = std::move(*__i);
+       std::move_backward(__first, __i, __i + 1);
+       *__first = std::move(__val);
+     }
+   else
+     std::__unguarded_linear_insert(__i,
+    __gnu_cxx::__ops::__val_comp_iter(__comp));
+ }
+    }
+
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline void
+    __unguarded_insertion_sort(_RandomAccessIterator __first,
+          _RandomAccessIterator __last, _Compare __comp)
+    {
+      for (_RandomAccessIterator __i = __first; __i != __last; ++__i)
+ std::__unguarded_linear_insert(__i,
+    __gnu_cxx::__ops::__val_comp_iter(__comp));
+    }
+
+
+
+
+
+  enum { _S_threshold = 16 };
+
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    void
+    __final_insertion_sort(_RandomAccessIterator __first,
+      _RandomAccessIterator __last, _Compare __comp)
+    {
+      if (__last - __first > int(_S_threshold))
+ {
+   std::__insertion_sort(__first, __first + int(_S_threshold), __comp);
+   std::__unguarded_insertion_sort(__first + int(_S_threshold), __last,
+       __comp);
+ }
+      else
+ std::__insertion_sort(__first, __last, __comp);
+    }
+
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    _RandomAccessIterator
+    __unguarded_partition(_RandomAccessIterator __first,
+     _RandomAccessIterator __last,
+     _RandomAccessIterator __pivot, _Compare __comp)
+    {
+      while (true)
+ {
+   while (__comp(__first, __pivot))
+     ++__first;
+   --__last;
+   while (__comp(__pivot, __last))
+     --__last;
+   if (!(__first < __last))
+     return __first;
+   std::iter_swap(__first, __last);
+   ++__first;
+ }
+    }
+
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline _RandomAccessIterator
+    __unguarded_partition_pivot(_RandomAccessIterator __first,
+    _RandomAccessIterator __last, _Compare __comp)
+    {
+      _RandomAccessIterator __mid = __first + (__last - __first) / 2;
+      std::__move_median_to_first(__first, __first + 1, __mid, __last - 1,
+      __comp);
+      return std::__unguarded_partition(__first + 1, __last, __first, __comp);
+    }
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline void
+    __partial_sort(_RandomAccessIterator __first,
+     _RandomAccessIterator __middle,
+     _RandomAccessIterator __last,
+     _Compare __comp)
+    {
+      std::__heap_select(__first, __middle, __last, __comp);
+      std::__sort_heap(__first, __middle, __comp);
+    }
+
+
+  template<typename _RandomAccessIterator, typename _Size, typename _Compare>
+    void
+    __introsort_loop(_RandomAccessIterator __first,
+       _RandomAccessIterator __last,
+       _Size __depth_limit, _Compare __comp)
+    {
+      while (__last - __first > int(_S_threshold))
+ {
+   if (__depth_limit == 0)
+     {
+       std::__partial_sort(__first, __last, __last, __comp);
+       return;
+     }
+   --__depth_limit;
+   _RandomAccessIterator __cut =
+     std::__unguarded_partition_pivot(__first, __last, __comp);
+   std::__introsort_loop(__cut, __last, __depth_limit, __comp);
+   __last = __cut;
+ }
+    }
+
+
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline void
+    __sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
+    _Compare __comp)
+    {
+      if (__first != __last)
+ {
+   std::__introsort_loop(__first, __last,
+    std::__lg(__last - __first) * 2,
+    __comp);
+   std::__final_insertion_sort(__first, __last, __comp);
+ }
+    }
+
+  template<typename _RandomAccessIterator, typename _Size, typename _Compare>
+    void
+    __introselect(_RandomAccessIterator __first, _RandomAccessIterator __nth,
+    _RandomAccessIterator __last, _Size __depth_limit,
+    _Compare __comp)
+    {
+      while (__last - __first > 3)
+ {
+   if (__depth_limit == 0)
+     {
+       std::__heap_select(__first, __nth + 1, __last, __comp);
+
+       std::iter_swap(__first, __nth);
+       return;
+     }
+   --__depth_limit;
+   _RandomAccessIterator __cut =
+     std::__unguarded_partition_pivot(__first, __last, __comp);
+   if (__cut <= __nth)
+     __first = __cut;
+   else
+     __last = __cut;
+ }
+      std::__insertion_sort(__first, __last, __comp);
+    }
+  template<typename _ForwardIterator, typename _Tp, typename _Compare>
+    inline _ForwardIterator
+    lower_bound(_ForwardIterator __first, _ForwardIterator __last,
+  const _Tp& __val, _Compare __comp)
+    {
+
+     
+     
+
+     
+                    ;
+
+      return std::__lower_bound(__first, __last, __val,
+    __gnu_cxx::__ops::__iter_comp_val(__comp));
+    }
+
+  template<typename _ForwardIterator, typename _Tp, typename _Compare>
+    _ForwardIterator
+    __upper_bound(_ForwardIterator __first, _ForwardIterator __last,
+    const _Tp& __val, _Compare __comp)
+    {
+      typedef typename iterator_traits<_ForwardIterator>::difference_type
+ _DistanceType;
+
+      _DistanceType __len = std::distance(__first, __last);
+
+      while (__len > 0)
+ {
+   _DistanceType __half = __len >> 1;
+   _ForwardIterator __middle = __first;
+   std::advance(__middle, __half);
+   if (__comp(__val, __middle))
+     __len = __half;
+   else
+     {
+       __first = __middle;
+       ++__first;
+       __len = __len - __half - 1;
+     }
+ }
+      return __first;
+    }
+  template<typename _ForwardIterator, typename _Tp>
+    inline _ForwardIterator
+    upper_bound(_ForwardIterator __first, _ForwardIterator __last,
+  const _Tp& __val)
+    {
+
+     
+     
+
+      ;
+
+      return std::__upper_bound(__first, __last, __val,
+    __gnu_cxx::__ops::__val_less_iter());
+    }
+  template<typename _ForwardIterator, typename _Tp, typename _Compare>
+    inline _ForwardIterator
+    upper_bound(_ForwardIterator __first, _ForwardIterator __last,
+  const _Tp& __val, _Compare __comp)
+    {
+
+     
+     
+
+     
+                    ;
+
+      return std::__upper_bound(__first, __last, __val,
+    __gnu_cxx::__ops::__val_comp_iter(__comp));
+    }
+
+  template<typename _ForwardIterator, typename _Tp,
+    typename _CompareItTp, typename _CompareTpIt>
+    pair<_ForwardIterator, _ForwardIterator>
+    __equal_range(_ForwardIterator __first, _ForwardIterator __last,
+    const _Tp& __val,
+    _CompareItTp __comp_it_val, _CompareTpIt __comp_val_it)
+    {
+      typedef typename iterator_traits<_ForwardIterator>::difference_type
+ _DistanceType;
+
+      _DistanceType __len = std::distance(__first, __last);
+
+      while (__len > 0)
+ {
+   _DistanceType __half = __len >> 1;
+   _ForwardIterator __middle = __first;
+   std::advance(__middle, __half);
+   if (__comp_it_val(__middle, __val))
+     {
+       __first = __middle;
+       ++__first;
+       __len = __len - __half - 1;
+     }
+   else if (__comp_val_it(__val, __middle))
+     __len = __half;
+   else
+     {
+       _ForwardIterator __left
+  = std::__lower_bound(__first, __middle, __val, __comp_it_val);
+       std::advance(__first, __len);
+       _ForwardIterator __right
+  = std::__upper_bound(++__middle, __first, __val, __comp_val_it);
+       return pair<_ForwardIterator, _ForwardIterator>(__left, __right);
+     }
+ }
+      return pair<_ForwardIterator, _ForwardIterator>(__first, __first);
+    }
+  template<typename _ForwardIterator, typename _Tp>
+    inline pair<_ForwardIterator, _ForwardIterator>
+    equal_range(_ForwardIterator __first, _ForwardIterator __last,
+  const _Tp& __val)
+    {
+
+     
+     
+
+     
+
+      ;
+      ;
+
+      return std::__equal_range(__first, __last, __val,
+    __gnu_cxx::__ops::__iter_less_val(),
+    __gnu_cxx::__ops::__val_less_iter());
+    }
+  template<typename _ForwardIterator, typename _Tp, typename _Compare>
+    inline pair<_ForwardIterator, _ForwardIterator>
+    equal_range(_ForwardIterator __first, _ForwardIterator __last,
+  const _Tp& __val, _Compare __comp)
+    {
+
+     
+     
+
+     
+
+     
+                    ;
+     
+                    ;
+
+      return std::__equal_range(__first, __last, __val,
+    __gnu_cxx::__ops::__iter_comp_val(__comp),
+    __gnu_cxx::__ops::__val_comp_iter(__comp));
+    }
+  template<typename _ForwardIterator, typename _Tp>
+    bool
+    binary_search(_ForwardIterator __first, _ForwardIterator __last,
+    const _Tp& __val)
+    {
+
+     
+     
+
+      ;
+      ;
+
+      _ForwardIterator __i
+ = std::__lower_bound(__first, __last, __val,
+        __gnu_cxx::__ops::__iter_less_val());
+      return __i != __last && !(__val < *__i);
+    }
+  template<typename _ForwardIterator, typename _Tp, typename _Compare>
+    bool
+    binary_search(_ForwardIterator __first, _ForwardIterator __last,
+    const _Tp& __val, _Compare __comp)
+    {
+
+     
+     
+
+     
+                    ;
+     
+                    ;
+
+      _ForwardIterator __i
+ = std::__lower_bound(__first, __last, __val,
+        __gnu_cxx::__ops::__iter_comp_val(__comp));
+      return __i != __last && !bool(__comp(__val, *__i));
+    }
+
+
+
+
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator, typename _Compare>
+    void
+    __move_merge_adaptive(_InputIterator1 __first1, _InputIterator1 __last1,
+     _InputIterator2 __first2, _InputIterator2 __last2,
+     _OutputIterator __result, _Compare __comp)
+    {
+      while (__first1 != __last1 && __first2 != __last2)
+ {
+   if (__comp(__first2, __first1))
+     {
+       *__result = std::move(*__first2);
+       ++__first2;
+     }
+   else
+     {
+       *__result = std::move(*__first1);
+       ++__first1;
+     }
+   ++__result;
+ }
+      if (__first1 != __last1)
+ std::move(__first1, __last1, __result);
+    }
+
+
+  template<typename _BidirectionalIterator1, typename _BidirectionalIterator2,
+    typename _BidirectionalIterator3, typename _Compare>
+    void
+    __move_merge_adaptive_backward(_BidirectionalIterator1 __first1,
+       _BidirectionalIterator1 __last1,
+       _BidirectionalIterator2 __first2,
+       _BidirectionalIterator2 __last2,
+       _BidirectionalIterator3 __result,
+       _Compare __comp)
+    {
+      if (__first1 == __last1)
+ {
+   std::move_backward(__first2, __last2, __result);
+   return;
+ }
+      else if (__first2 == __last2)
+ return;
+
+      --__last1;
+      --__last2;
+      while (true)
+ {
+   if (__comp(__last2, __last1))
+     {
+       *--__result = std::move(*__last1);
+       if (__first1 == __last1)
+  {
+    std::move_backward(__first2, ++__last2, __result);
+    return;
+  }
+       --__last1;
+     }
+   else
+     {
+       *--__result = std::move(*__last2);
+       if (__first2 == __last2)
+  return;
+       --__last2;
+     }
+ }
+    }
+
+
+  template<typename _BidirectionalIterator1, typename _BidirectionalIterator2,
+    typename _Distance>
+    _BidirectionalIterator1
+    __rotate_adaptive(_BidirectionalIterator1 __first,
+        _BidirectionalIterator1 __middle,
+        _BidirectionalIterator1 __last,
+        _Distance __len1, _Distance __len2,
+        _BidirectionalIterator2 __buffer,
+        _Distance __buffer_size)
+    {
+      _BidirectionalIterator2 __buffer_end;
+      if (__len1 > __len2 && __len2 <= __buffer_size)
+ {
+   if (__len2)
+     {
+       __buffer_end = std::move(__middle, __last, __buffer);
+       std::move_backward(__first, __middle, __last);
+       return std::move(__buffer, __buffer_end, __first);
+     }
+   else
+     return __first;
+ }
+      else if (__len1 <= __buffer_size)
+ {
+   if (__len1)
+     {
+       __buffer_end = std::move(__first, __middle, __buffer);
+       std::move(__middle, __last, __first);
+       return std::move_backward(__buffer, __buffer_end, __last);
+     }
+   else
+     return __last;
+ }
+      else
+ {
+   std::rotate(__first, __middle, __last);
+   std::advance(__first, std::distance(__middle, __last));
+   return __first;
+ }
+    }
+
+
+  template<typename _BidirectionalIterator, typename _Distance,
+    typename _Pointer, typename _Compare>
+    void
+    __merge_adaptive(_BidirectionalIterator __first,
+       _BidirectionalIterator __middle,
+       _BidirectionalIterator __last,
+       _Distance __len1, _Distance __len2,
+       _Pointer __buffer, _Distance __buffer_size,
+       _Compare __comp)
+    {
+      if (__len1 <= __len2 && __len1 <= __buffer_size)
+ {
+   _Pointer __buffer_end = std::move(__first, __middle, __buffer);
+   std::__move_merge_adaptive(__buffer, __buffer_end, __middle, __last,
+         __first, __comp);
+ }
+      else if (__len2 <= __buffer_size)
+ {
+   _Pointer __buffer_end = std::move(__middle, __last, __buffer);
+   std::__move_merge_adaptive_backward(__first, __middle, __buffer,
+           __buffer_end, __last, __comp);
+ }
+      else
+ {
+   _BidirectionalIterator __first_cut = __first;
+   _BidirectionalIterator __second_cut = __middle;
+   _Distance __len11 = 0;
+   _Distance __len22 = 0;
+   if (__len1 > __len2)
+     {
+       __len11 = __len1 / 2;
+       std::advance(__first_cut, __len11);
+       __second_cut
+  = std::__lower_bound(__middle, __last, *__first_cut,
+         __gnu_cxx::__ops::__iter_comp_val(__comp));
+       __len22 = std::distance(__middle, __second_cut);
+     }
+   else
+     {
+       __len22 = __len2 / 2;
+       std::advance(__second_cut, __len22);
+       __first_cut
+  = std::__upper_bound(__first, __middle, *__second_cut,
+         __gnu_cxx::__ops::__val_comp_iter(__comp));
+       __len11 = std::distance(__first, __first_cut);
+     }
+
+   _BidirectionalIterator __new_middle
+     = std::__rotate_adaptive(__first_cut, __middle, __second_cut,
+         __len1 - __len11, __len22, __buffer,
+         __buffer_size);
+   std::__merge_adaptive(__first, __first_cut, __new_middle, __len11,
+    __len22, __buffer, __buffer_size, __comp);
+   std::__merge_adaptive(__new_middle, __second_cut, __last,
+    __len1 - __len11,
+    __len2 - __len22, __buffer,
+    __buffer_size, __comp);
+ }
+    }
+
+
+  template<typename _BidirectionalIterator, typename _Distance,
+    typename _Compare>
+    void
+    __merge_without_buffer(_BidirectionalIterator __first,
+      _BidirectionalIterator __middle,
+      _BidirectionalIterator __last,
+      _Distance __len1, _Distance __len2,
+      _Compare __comp)
+    {
+      if (__len1 == 0 || __len2 == 0)
+ return;
+
+      if (__len1 + __len2 == 2)
+ {
+   if (__comp(__middle, __first))
+     std::iter_swap(__first, __middle);
+   return;
+ }
+
+      _BidirectionalIterator __first_cut = __first;
+      _BidirectionalIterator __second_cut = __middle;
+      _Distance __len11 = 0;
+      _Distance __len22 = 0;
+      if (__len1 > __len2)
+ {
+   __len11 = __len1 / 2;
+   std::advance(__first_cut, __len11);
+   __second_cut
+     = std::__lower_bound(__middle, __last, *__first_cut,
+     __gnu_cxx::__ops::__iter_comp_val(__comp));
+   __len22 = std::distance(__middle, __second_cut);
+ }
+      else
+ {
+   __len22 = __len2 / 2;
+   std::advance(__second_cut, __len22);
+   __first_cut
+     = std::__upper_bound(__first, __middle, *__second_cut,
+     __gnu_cxx::__ops::__val_comp_iter(__comp));
+   __len11 = std::distance(__first, __first_cut);
+ }
+
+      std::rotate(__first_cut, __middle, __second_cut);
+      _BidirectionalIterator __new_middle = __first_cut;
+      std::advance(__new_middle, std::distance(__middle, __second_cut));
+      std::__merge_without_buffer(__first, __first_cut, __new_middle,
+      __len11, __len22, __comp);
+      std::__merge_without_buffer(__new_middle, __second_cut, __last,
+      __len1 - __len11, __len2 - __len22, __comp);
+    }
+
+  template<typename _BidirectionalIterator, typename _Compare>
+    void
+    __inplace_merge(_BidirectionalIterator __first,
+      _BidirectionalIterator __middle,
+      _BidirectionalIterator __last,
+      _Compare __comp)
+    {
+      typedef typename iterator_traits<_BidirectionalIterator>::value_type
+   _ValueType;
+      typedef typename iterator_traits<_BidirectionalIterator>::difference_type
+   _DistanceType;
+
+      if (__first == __middle || __middle == __last)
+ return;
+
+      const _DistanceType __len1 = std::distance(__first, __middle);
+      const _DistanceType __len2 = std::distance(__middle, __last);
+
+      typedef _Temporary_buffer<_BidirectionalIterator, _ValueType> _TmpBuf;
+      _TmpBuf __buf(__first, __last);
+
+      if (__buf.begin() == 0)
+ std::__merge_without_buffer
+   (__first, __middle, __last, __len1, __len2, __comp);
+      else
+ std::__merge_adaptive
+   (__first, __middle, __last, __len1, __len2, __buf.begin(),
+    _DistanceType(__buf.size()), __comp);
+    }
+  template<typename _BidirectionalIterator>
+    inline void
+    inplace_merge(_BidirectionalIterator __first,
+    _BidirectionalIterator __middle,
+    _BidirectionalIterator __last)
+    {
+
+     
+
+     
+
+      ;
+      ;
+      ;
+
+      std::__inplace_merge(__first, __middle, __last,
+      __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _BidirectionalIterator, typename _Compare>
+    inline void
+    inplace_merge(_BidirectionalIterator __first,
+    _BidirectionalIterator __middle,
+    _BidirectionalIterator __last,
+    _Compare __comp)
+    {
+
+     
+
+     
+
+
+      ;
+      ;
+      ;
+
+      std::__inplace_merge(__first, __middle, __last,
+      __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+
+
+  template<typename _InputIterator, typename _OutputIterator,
+    typename _Compare>
+    _OutputIterator
+    __move_merge(_InputIterator __first1, _InputIterator __last1,
+   _InputIterator __first2, _InputIterator __last2,
+   _OutputIterator __result, _Compare __comp)
+    {
+      while (__first1 != __last1 && __first2 != __last2)
+ {
+   if (__comp(__first2, __first1))
+     {
+       *__result = std::move(*__first2);
+       ++__first2;
+     }
+   else
+     {
+       *__result = std::move(*__first1);
+       ++__first1;
+     }
+   ++__result;
+ }
+      return std::move(__first2, __last2, std::move(__first1, __last1, __result))
+
+                  ;
+    }
+
+  template<typename _RandomAccessIterator1, typename _RandomAccessIterator2,
+    typename _Distance, typename _Compare>
+    void
+    __merge_sort_loop(_RandomAccessIterator1 __first,
+        _RandomAccessIterator1 __last,
+        _RandomAccessIterator2 __result, _Distance __step_size,
+        _Compare __comp)
+    {
+      const _Distance __two_step = 2 * __step_size;
+
+      while (__last - __first >= __two_step)
+ {
+   __result = std::__move_merge(__first, __first + __step_size,
+           __first + __step_size,
+           __first + __two_step,
+           __result, __comp);
+   __first += __two_step;
+ }
+      __step_size = std::min(_Distance(__last - __first), __step_size);
+
+      std::__move_merge(__first, __first + __step_size,
+   __first + __step_size, __last, __result, __comp);
+    }
+
+  template<typename _RandomAccessIterator, typename _Distance,
+    typename _Compare>
+    void
+    __chunk_insertion_sort(_RandomAccessIterator __first,
+      _RandomAccessIterator __last,
+      _Distance __chunk_size, _Compare __comp)
+    {
+      while (__last - __first >= __chunk_size)
+ {
+   std::__insertion_sort(__first, __first + __chunk_size, __comp);
+   __first += __chunk_size;
+ }
+      std::__insertion_sort(__first, __last, __comp);
+    }
+
+  enum { _S_chunk_size = 7 };
+
+  template<typename _RandomAccessIterator, typename _Pointer, typename _Compare>
+    void
+    __merge_sort_with_buffer(_RandomAccessIterator __first,
+        _RandomAccessIterator __last,
+        _Pointer __buffer, _Compare __comp)
+    {
+      typedef typename iterator_traits<_RandomAccessIterator>::difference_type
+ _Distance;
+
+      const _Distance __len = __last - __first;
+      const _Pointer __buffer_last = __buffer + __len;
+
+      _Distance __step_size = _S_chunk_size;
+      std::__chunk_insertion_sort(__first, __last, __step_size, __comp);
+
+      while (__step_size < __len)
+ {
+   std::__merge_sort_loop(__first, __last, __buffer,
+     __step_size, __comp);
+   __step_size *= 2;
+   std::__merge_sort_loop(__buffer, __buffer_last, __first,
+     __step_size, __comp);
+   __step_size *= 2;
+ }
+    }
+
+  template<typename _RandomAccessIterator, typename _Pointer,
+    typename _Distance, typename _Compare>
+    void
+    __stable_sort_adaptive(_RandomAccessIterator __first,
+      _RandomAccessIterator __last,
+      _Pointer __buffer, _Distance __buffer_size,
+      _Compare __comp)
+    {
+      const _Distance __len = (__last - __first + 1) / 2;
+      const _RandomAccessIterator __middle = __first + __len;
+      if (__len > __buffer_size)
+ {
+   std::__stable_sort_adaptive(__first, __middle, __buffer,
+          __buffer_size, __comp);
+   std::__stable_sort_adaptive(__middle, __last, __buffer,
+          __buffer_size, __comp);
+ }
+      else
+ {
+   std::__merge_sort_with_buffer(__first, __middle, __buffer, __comp);
+   std::__merge_sort_with_buffer(__middle, __last, __buffer, __comp);
+ }
+      std::__merge_adaptive(__first, __middle, __last,
+       _Distance(__middle - __first),
+       _Distance(__last - __middle),
+       __buffer, __buffer_size,
+       __comp);
+    }
+
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    void
+    __inplace_stable_sort(_RandomAccessIterator __first,
+     _RandomAccessIterator __last, _Compare __comp)
+    {
+      if (__last - __first < 15)
+ {
+   std::__insertion_sort(__first, __last, __comp);
+   return;
+ }
+      _RandomAccessIterator __middle = __first + (__last - __first) / 2;
+      std::__inplace_stable_sort(__first, __middle, __comp);
+      std::__inplace_stable_sort(__middle, __last, __comp);
+      std::__merge_without_buffer(__first, __middle, __last,
+      __middle - __first,
+      __last - __middle,
+      __comp);
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _Compare>
+    bool
+    __includes(_InputIterator1 __first1, _InputIterator1 __last1,
+        _InputIterator2 __first2, _InputIterator2 __last2,
+        _Compare __comp)
+    {
+      while (__first1 != __last1 && __first2 != __last2)
+ if (__comp(__first2, __first1))
+   return false;
+ else if (__comp(__first1, __first2))
+   ++__first1;
+ else
+   {
+     ++__first1;
+     ++__first2;
+   }
+
+      return __first2 == __last2;
+    }
+  template<typename _InputIterator1, typename _InputIterator2>
+    inline bool
+    includes(_InputIterator1 __first1, _InputIterator1 __last1,
+      _InputIterator2 __first2, _InputIterator2 __last2)
+    {
+
+     
+     
+     
+
+
+     
+
+
+      ;
+      ;
+      ;
+      ;
+
+      return std::__includes(__first1, __last1, __first2, __last2,
+        __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _Compare>
+    inline bool
+    includes(_InputIterator1 __first1, _InputIterator1 __last1,
+      _InputIterator2 __first2, _InputIterator2 __last2,
+      _Compare __comp)
+    {
+
+     
+     
+     
+
+
+     
+
+
+      ;
+      ;
+      ;
+      ;
+
+      return std::__includes(__first1, __last1, __first2, __last2,
+        __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+  template<typename _BidirectionalIterator, typename _Compare>
+    bool
+    __next_permutation(_BidirectionalIterator __first,
+         _BidirectionalIterator __last, _Compare __comp)
+    {
+      if (__first == __last)
+ return false;
+      _BidirectionalIterator __i = __first;
+      ++__i;
+      if (__i == __last)
+ return false;
+      __i = __last;
+      --__i;
+
+      for(;;)
+ {
+   _BidirectionalIterator __ii = __i;
+   --__i;
+   if (__comp(__i, __ii))
+     {
+       _BidirectionalIterator __j = __last;
+       while (!__comp(__i, --__j))
+  {}
+       std::iter_swap(__i, __j);
+       std::__reverse(__ii, __last,
+        std::__iterator_category(__first));
+       return true;
+     }
+   if (__i == __first)
+     {
+       std::__reverse(__first, __last,
+        std::__iterator_category(__first));
+       return false;
+     }
+ }
+    }
+  template<typename _BidirectionalIterator>
+    inline bool
+    next_permutation(_BidirectionalIterator __first,
+       _BidirectionalIterator __last)
+    {
+
+     
+
+     
+
+      ;
+      ;
+
+      return std::__next_permutation
+ (__first, __last, __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _BidirectionalIterator, typename _Compare>
+    inline bool
+    next_permutation(_BidirectionalIterator __first,
+       _BidirectionalIterator __last, _Compare __comp)
+    {
+
+     
+
+     
+
+
+      ;
+      ;
+
+      return std::__next_permutation
+ (__first, __last, __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+  template<typename _BidirectionalIterator, typename _Compare>
+    bool
+    __prev_permutation(_BidirectionalIterator __first,
+         _BidirectionalIterator __last, _Compare __comp)
+    {
+      if (__first == __last)
+ return false;
+      _BidirectionalIterator __i = __first;
+      ++__i;
+      if (__i == __last)
+ return false;
+      __i = __last;
+      --__i;
+
+      for(;;)
+ {
+   _BidirectionalIterator __ii = __i;
+   --__i;
+   if (__comp(__ii, __i))
+     {
+       _BidirectionalIterator __j = __last;
+       while (!__comp(--__j, __i))
+  {}
+       std::iter_swap(__i, __j);
+       std::__reverse(__ii, __last,
+        std::__iterator_category(__first));
+       return true;
+     }
+   if (__i == __first)
+     {
+       std::__reverse(__first, __last,
+        std::__iterator_category(__first));
+       return false;
+     }
+ }
+    }
+  template<typename _BidirectionalIterator>
+    inline bool
+    prev_permutation(_BidirectionalIterator __first,
+       _BidirectionalIterator __last)
+    {
+
+     
+
+     
+
+      ;
+      ;
+
+      return std::__prev_permutation(__first, __last,
+         __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _BidirectionalIterator, typename _Compare>
+    inline bool
+    prev_permutation(_BidirectionalIterator __first,
+       _BidirectionalIterator __last, _Compare __comp)
+    {
+
+     
+
+     
+
+
+      ;
+      ;
+
+      return std::__prev_permutation(__first, __last,
+    __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+
+
+
+  template<typename _InputIterator, typename _OutputIterator,
+    typename _Predicate, typename _Tp>
+    _OutputIterator
+    __replace_copy_if(_InputIterator __first, _InputIterator __last,
+        _OutputIterator __result,
+        _Predicate __pred, const _Tp& __new_value)
+    {
+      for (; __first != __last; ++__first, (void)++__result)
+ if (__pred(__first))
+   *__result = __new_value;
+ else
+   *__result = *__first;
+      return __result;
+    }
+  template<typename _InputIterator, typename _OutputIterator, typename _Tp>
+    inline _OutputIterator
+    replace_copy(_InputIterator __first, _InputIterator __last,
+   _OutputIterator __result,
+   const _Tp& __old_value, const _Tp& __new_value)
+    {
+
+     
+     
+
+     
+
+      ;
+
+      return std::__replace_copy_if(__first, __last, __result,
+   __gnu_cxx::__ops::__iter_equals_val(__old_value),
+           __new_value);
+    }
+  template<typename _InputIterator, typename _OutputIterator,
+    typename _Predicate, typename _Tp>
+    inline _OutputIterator
+    replace_copy_if(_InputIterator __first, _InputIterator __last,
+      _OutputIterator __result,
+      _Predicate __pred, const _Tp& __new_value)
+    {
+
+     
+     
+
+     
+
+      ;
+
+      return std::__replace_copy_if(__first, __last, __result,
+    __gnu_cxx::__ops::__pred_iter(__pred),
+           __new_value);
+    }
+
+  template<typename _InputIterator, typename _Predicate>
+    typename iterator_traits<_InputIterator>::difference_type
+    __count_if(_InputIterator __first, _InputIterator __last, _Predicate __pred)
+    {
+      typename iterator_traits<_InputIterator>::difference_type __n = 0;
+      for (; __first != __last; ++__first)
+ if (__pred(__first))
+   ++__n;
+      return __n;
+    }
+  template<typename _ForwardIterator>
+    inline bool
+    is_sorted(_ForwardIterator __first, _ForwardIterator __last)
+    { return std::is_sorted_until(__first, __last) == __last; }
+  template<typename _ForwardIterator, typename _Compare>
+    inline bool
+    is_sorted(_ForwardIterator __first, _ForwardIterator __last,
+       _Compare __comp)
+    { return std::is_sorted_until(__first, __last, __comp) == __last; }
+
+  template<typename _ForwardIterator, typename _Compare>
+    _ForwardIterator
+    __is_sorted_until(_ForwardIterator __first, _ForwardIterator __last,
+        _Compare __comp)
+    {
+      if (__first == __last)
+ return __last;
+
+      _ForwardIterator __next = __first;
+      for (++__next; __next != __last; __first = __next, (void)++__next)
+ if (__comp(__next, __first))
+   return __next;
+      return __next;
+    }
+  template<typename _ForwardIterator>
+    inline _ForwardIterator
+    is_sorted_until(_ForwardIterator __first, _ForwardIterator __last)
+    {
+
+     
+     
+
+      ;
+      ;
+
+      return std::__is_sorted_until(__first, __last,
+        __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _ForwardIterator, typename _Compare>
+    inline _ForwardIterator
+    is_sorted_until(_ForwardIterator __first, _ForwardIterator __last,
+      _Compare __comp)
+    {
+
+     
+     
+
+
+      ;
+      ;
+
+      return std::__is_sorted_until(__first, __last,
+        __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+  template<typename _Tp>
+    constexpr
+    inline pair<const _Tp&, const _Tp&>
+    minmax(const _Tp& __a, const _Tp& __b)
+    {
+
+     
+
+      return __b < __a ? pair<const _Tp&, const _Tp&>(__b, __a)
+         : pair<const _Tp&, const _Tp&>(__a, __b);
+    }
+  template<typename _Tp, typename _Compare>
+    constexpr
+    inline pair<const _Tp&, const _Tp&>
+    minmax(const _Tp& __a, const _Tp& __b, _Compare __comp)
+    {
+      return __comp(__b, __a) ? pair<const _Tp&, const _Tp&>(__b, __a)
+         : pair<const _Tp&, const _Tp&>(__a, __b);
+    }
+
+  template<typename _ForwardIterator, typename _Compare>
+    constexpr
+    pair<_ForwardIterator, _ForwardIterator>
+    __minmax_element(_ForwardIterator __first, _ForwardIterator __last,
+       _Compare __comp)
+    {
+      _ForwardIterator __next = __first;
+      if (__first == __last
+   || ++__next == __last)
+ return std::make_pair(__first, __first);
+
+      _ForwardIterator __min{}, __max{};
+      if (__comp(__next, __first))
+ {
+   __min = __next;
+   __max = __first;
+ }
+      else
+ {
+   __min = __first;
+   __max = __next;
+ }
+
+      __first = __next;
+      ++__first;
+
+      while (__first != __last)
+ {
+   __next = __first;
+   if (++__next == __last)
+     {
+       if (__comp(__first, __min))
+  __min = __first;
+       else if (!__comp(__first, __max))
+  __max = __first;
+       break;
+     }
+
+   if (__comp(__next, __first))
+     {
+       if (__comp(__next, __min))
+  __min = __next;
+       if (!__comp(__first, __max))
+  __max = __first;
+     }
+   else
+     {
+       if (__comp(__first, __min))
+  __min = __first;
+       if (!__comp(__next, __max))
+  __max = __next;
+     }
+
+   __first = __next;
+   ++__first;
+ }
+
+      return std::make_pair(__min, __max);
+    }
+  template<typename _ForwardIterator>
+    constexpr
+    inline pair<_ForwardIterator, _ForwardIterator>
+    minmax_element(_ForwardIterator __first, _ForwardIterator __last)
+    {
+
+     
+     
+
+      ;
+      ;
+
+      return std::__minmax_element(__first, __last,
+       __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _ForwardIterator, typename _Compare>
+    constexpr
+    inline pair<_ForwardIterator, _ForwardIterator>
+    minmax_element(_ForwardIterator __first, _ForwardIterator __last,
+     _Compare __comp)
+    {
+
+     
+     
+
+
+      ;
+      ;
+
+      return std::__minmax_element(__first, __last,
+       __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+
+  template<typename _Tp>
+    constexpr
+    inline _Tp
+    min(initializer_list<_Tp> __l)
+    { return *std::min_element(__l.begin(), __l.end()); }
+
+  template<typename _Tp, typename _Compare>
+    constexpr
+    inline _Tp
+    min(initializer_list<_Tp> __l, _Compare __comp)
+    { return *std::min_element(__l.begin(), __l.end(), __comp); }
+
+  template<typename _Tp>
+    constexpr
+    inline _Tp
+    max(initializer_list<_Tp> __l)
+    { return *std::max_element(__l.begin(), __l.end()); }
+
+  template<typename _Tp, typename _Compare>
+    constexpr
+    inline _Tp
+    max(initializer_list<_Tp> __l, _Compare __comp)
+    { return *std::max_element(__l.begin(), __l.end(), __comp); }
+
+  template<typename _Tp>
+    constexpr
+    inline pair<_Tp, _Tp>
+    minmax(initializer_list<_Tp> __l)
+    {
+      pair<const _Tp*, const _Tp*> __p =
+ std::minmax_element(__l.begin(), __l.end());
+      return std::make_pair(*__p.first, *__p.second);
+    }
+
+  template<typename _Tp, typename _Compare>
+    constexpr
+    inline pair<_Tp, _Tp>
+    minmax(initializer_list<_Tp> __l, _Compare __comp)
+    {
+      pair<const _Tp*, const _Tp*> __p =
+ std::minmax_element(__l.begin(), __l.end(), __comp);
+      return std::make_pair(*__p.first, *__p.second);
+    }
+
+  template<typename _ForwardIterator1, typename _ForwardIterator2,
+    typename _BinaryPredicate>
+    bool
+    __is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+       _ForwardIterator2 __first2, _BinaryPredicate __pred)
+    {
+
+
+      for (; __first1 != __last1; ++__first1, (void)++__first2)
+ if (!__pred(__first1, __first2))
+   break;
+
+      if (__first1 == __last1)
+ return true;
+
+
+
+      _ForwardIterator2 __last2 = __first2;
+      std::advance(__last2, std::distance(__first1, __last1));
+      for (_ForwardIterator1 __scan = __first1; __scan != __last1; ++__scan)
+ {
+   if (__scan != std::__find_if(__first1, __scan,
+     __gnu_cxx::__ops::__iter_comp_iter(__pred, __scan)))
+     continue;
+
+   auto __matches
+     = std::__count_if(__first2, __last2,
+   __gnu_cxx::__ops::__iter_comp_iter(__pred, __scan));
+   if (0 == __matches ||
+       std::__count_if(__scan, __last1,
+   __gnu_cxx::__ops::__iter_comp_iter(__pred, __scan))
+       != __matches)
+     return false;
+ }
+      return true;
+    }
+  template<typename _ForwardIterator1, typename _ForwardIterator2>
+    inline bool
+    is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+     _ForwardIterator2 __first2)
+    {
+
+     
+     
+     
+
+
+      ;
+
+      return std::__is_permutation(__first1, __last1, __first2,
+       __gnu_cxx::__ops::__iter_equal_to_iter());
+    }
+  template<typename _ForwardIterator1, typename _ForwardIterator2,
+    typename _BinaryPredicate>
+    inline bool
+    is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+     _ForwardIterator2 __first2, _BinaryPredicate __pred)
+    {
+
+     
+     
+     
+
+
+      ;
+
+      return std::__is_permutation(__first1, __last1, __first2,
+       __gnu_cxx::__ops::__iter_comp_iter(__pred));
+    }
+
+
+  template<typename _ForwardIterator1, typename _ForwardIterator2,
+    typename _BinaryPredicate>
+    bool
+    __is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+       _ForwardIterator2 __first2, _ForwardIterator2 __last2,
+       _BinaryPredicate __pred)
+    {
+      using _Cat1
+ = typename iterator_traits<_ForwardIterator1>::iterator_category;
+      using _Cat2
+ = typename iterator_traits<_ForwardIterator2>::iterator_category;
+      using _It1_is_RA = is_same<_Cat1, random_access_iterator_tag>;
+      using _It2_is_RA = is_same<_Cat2, random_access_iterator_tag>;
+      constexpr bool __ra_iters = _It1_is_RA() && _It2_is_RA();
+      if (__ra_iters)
+ {
+   auto __d1 = std::distance(__first1, __last1);
+   auto __d2 = std::distance(__first2, __last2);
+   if (__d1 != __d2)
+     return false;
+ }
+
+
+
+      for (; __first1 != __last1 && __first2 != __last2;
+   ++__first1, (void)++__first2)
+ if (!__pred(__first1, __first2))
+   break;
+
+      if (__ra_iters)
+ {
+   if (__first1 == __last1)
+     return true;
+ }
+      else
+ {
+   auto __d1 = std::distance(__first1, __last1);
+   auto __d2 = std::distance(__first2, __last2);
+   if (__d1 == 0 && __d2 == 0)
+     return true;
+   if (__d1 != __d2)
+     return false;
+ }
+
+      for (_ForwardIterator1 __scan = __first1; __scan != __last1; ++__scan)
+ {
+   if (__scan != std::__find_if(__first1, __scan,
+   __gnu_cxx::__ops::__iter_comp_iter(__pred, __scan)))
+     continue;
+
+   auto __matches = std::__count_if(__first2, __last2,
+  __gnu_cxx::__ops::__iter_comp_iter(__pred, __scan));
+   if (0 == __matches
+       || std::__count_if(__scan, __last1,
+   __gnu_cxx::__ops::__iter_comp_iter(__pred, __scan))
+       != __matches)
+     return false;
+ }
+      return true;
+    }
+  template<typename _ForwardIterator1, typename _ForwardIterator2>
+    inline bool
+    is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+     _ForwardIterator2 __first2, _ForwardIterator2 __last2)
+    {
+      ;
+      ;
+
+      return
+ std::__is_permutation(__first1, __last1, __first2, __last2,
+         __gnu_cxx::__ops::__iter_equal_to_iter());
+    }
+  template<typename _ForwardIterator1, typename _ForwardIterator2,
+    typename _BinaryPredicate>
+    inline bool
+    is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+     _ForwardIterator2 __first2, _ForwardIterator2 __last2,
+     _BinaryPredicate __pred)
+    {
+      ;
+      ;
+
+      return std::__is_permutation(__first1, __last1, __first2, __last2,
+       __gnu_cxx::__ops::__iter_comp_iter(__pred));
+    }
+  template<typename _IntType, typename _UniformRandomBitGenerator>
+    pair<_IntType, _IntType>
+    __gen_two_uniform_ints(_IntType __b0, _IntType __b1,
+      _UniformRandomBitGenerator&& __g)
+    {
+      _IntType __x
+ = uniform_int_distribution<_IntType>{0, (__b0 * __b1) - 1}(__g);
+      return std::make_pair(__x / __b1, __x % __b1);
+    }
+  template<typename _RandomAccessIterator,
+    typename _UniformRandomNumberGenerator>
+    void
+    shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last,
+     _UniformRandomNumberGenerator&& __g)
+    {
+
+     
+
+      ;
+
+      if (__first == __last)
+ return;
+
+      typedef typename iterator_traits<_RandomAccessIterator>::difference_type
+ _DistanceType;
+
+      typedef typename std::make_unsigned<_DistanceType>::type __ud_type;
+      typedef typename std::uniform_int_distribution<__ud_type> __distr_type;
+      typedef typename __distr_type::param_type __p_type;
+
+      typedef typename remove_reference<_UniformRandomNumberGenerator>::type
+ _Gen;
+      typedef typename common_type<typename _Gen::result_type, __ud_type>::type
+ __uc_type;
+
+      const __uc_type __urngrange = __g.max() - __g.min();
+      const __uc_type __urange = __uc_type(__last - __first);
+
+      if (__urngrange / __urange >= __urange)
+
+      {
+ _RandomAccessIterator __i = __first + 1;
+
+
+
+
+
+ if ((__urange % 2) == 0)
+ {
+   __distr_type __d{0, 1};
+   std::iter_swap(__i++, __first + __d(__g));
+ }
+
+
+
+
+
+ while (__i != __last)
+ {
+   const __uc_type __swap_range = __uc_type(__i - __first) + 1;
+
+   const pair<__uc_type, __uc_type> __pospos =
+     __gen_two_uniform_ints(__swap_range, __swap_range + 1, __g);
+
+   std::iter_swap(__i++, __first + __pospos.first);
+   std::iter_swap(__i++, __first + __pospos.second);
+ }
+
+ return;
+      }
+
+      __distr_type __d;
+
+      for (_RandomAccessIterator __i = __first + 1; __i != __last; ++__i)
+ std::iter_swap(__i, __first + __d(__g, __p_type(0, __i - __first)));
+    }
+
+
+
+
+
+  template<typename _InputIterator, typename _Function>
+    _Function
+    for_each(_InputIterator __first, _InputIterator __last, _Function __f)
+    {
+
+     
+      ;
+      for (; __first != __last; ++__first)
+ __f(*__first);
+      return __f;
+    }
+  template<typename _InputIterator, typename _Tp>
+    inline _InputIterator
+    find(_InputIterator __first, _InputIterator __last,
+  const _Tp& __val)
+    {
+
+     
+     
+
+      ;
+      return std::__find_if(__first, __last,
+       __gnu_cxx::__ops::__iter_equals_val(__val));
+    }
+  template<typename _InputIterator, typename _Predicate>
+    inline _InputIterator
+    find_if(_InputIterator __first, _InputIterator __last,
+     _Predicate __pred)
+    {
+
+     
+     
+
+      ;
+
+      return std::__find_if(__first, __last,
+       __gnu_cxx::__ops::__pred_iter(__pred));
+    }
+  template<typename _InputIterator, typename _ForwardIterator>
+    _InputIterator
+    find_first_of(_InputIterator __first1, _InputIterator __last1,
+    _ForwardIterator __first2, _ForwardIterator __last2)
+    {
+
+     
+     
+     
+
+
+      ;
+      ;
+
+      for (; __first1 != __last1; ++__first1)
+ for (_ForwardIterator __iter = __first2; __iter != __last2; ++__iter)
+   if (*__first1 == *__iter)
+     return __first1;
+      return __last1;
+    }
+  template<typename _InputIterator, typename _ForwardIterator,
+    typename _BinaryPredicate>
+    _InputIterator
+    find_first_of(_InputIterator __first1, _InputIterator __last1,
+    _ForwardIterator __first2, _ForwardIterator __last2,
+    _BinaryPredicate __comp)
+    {
+
+     
+     
+     
+
+
+      ;
+      ;
+
+      for (; __first1 != __last1; ++__first1)
+ for (_ForwardIterator __iter = __first2; __iter != __last2; ++__iter)
+   if (__comp(*__first1, *__iter))
+     return __first1;
+      return __last1;
+    }
+  template<typename _ForwardIterator>
+    inline _ForwardIterator
+    adjacent_find(_ForwardIterator __first, _ForwardIterator __last)
+    {
+
+     
+     
+
+      ;
+
+      return std::__adjacent_find(__first, __last,
+      __gnu_cxx::__ops::__iter_equal_to_iter());
+    }
+  template<typename _ForwardIterator, typename _BinaryPredicate>
+    inline _ForwardIterator
+    adjacent_find(_ForwardIterator __first, _ForwardIterator __last,
+    _BinaryPredicate __binary_pred)
+    {
+
+     
+     
+
+
+      ;
+
+      return std::__adjacent_find(__first, __last,
+   __gnu_cxx::__ops::__iter_comp_iter(__binary_pred));
+    }
+  template<typename _InputIterator, typename _Tp>
+    inline typename iterator_traits<_InputIterator>::difference_type
+    count(_InputIterator __first, _InputIterator __last, const _Tp& __value)
+    {
+
+     
+     
+
+      ;
+
+      return std::__count_if(__first, __last,
+        __gnu_cxx::__ops::__iter_equals_val(__value));
+    }
+  template<typename _InputIterator, typename _Predicate>
+    inline typename iterator_traits<_InputIterator>::difference_type
+    count_if(_InputIterator __first, _InputIterator __last, _Predicate __pred)
+    {
+
+     
+     
+
+      ;
+
+      return std::__count_if(__first, __last,
+        __gnu_cxx::__ops::__pred_iter(__pred));
+    }
+  template<typename _ForwardIterator1, typename _ForwardIterator2>
+    inline _ForwardIterator1
+    search(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2, _ForwardIterator2 __last2)
+    {
+
+     
+     
+     
+
+
+      ;
+      ;
+
+      return std::__search(__first1, __last1, __first2, __last2,
+      __gnu_cxx::__ops::__iter_equal_to_iter());
+    }
+  template<typename _ForwardIterator1, typename _ForwardIterator2,
+    typename _BinaryPredicate>
+    inline _ForwardIterator1
+    search(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2, _ForwardIterator2 __last2,
+    _BinaryPredicate __predicate)
+    {
+
+     
+     
+     
+
+
+      ;
+      ;
+
+      return std::__search(__first1, __last1, __first2, __last2,
+      __gnu_cxx::__ops::__iter_comp_iter(__predicate));
+    }
+  template<typename _ForwardIterator, typename _Integer, typename _Tp>
+    inline _ForwardIterator
+    search_n(_ForwardIterator __first, _ForwardIterator __last,
+      _Integer __count, const _Tp& __val)
+    {
+
+     
+     
+
+      ;
+
+      return std::__search_n(__first, __last, __count,
+        __gnu_cxx::__ops::__iter_equals_val(__val));
+    }
+  template<typename _ForwardIterator, typename _Integer, typename _Tp,
+    typename _BinaryPredicate>
+    inline _ForwardIterator
+    search_n(_ForwardIterator __first, _ForwardIterator __last,
+      _Integer __count, const _Tp& __val,
+      _BinaryPredicate __binary_pred)
+    {
+
+     
+     
+
+      ;
+
+      return std::__search_n(__first, __last, __count,
+  __gnu_cxx::__ops::__iter_comp_val(__binary_pred, __val));
+    }
+  template<typename _InputIterator, typename _OutputIterator,
+    typename _UnaryOperation>
+    _OutputIterator
+    transform(_InputIterator __first, _InputIterator __last,
+       _OutputIterator __result, _UnaryOperation __unary_op)
+    {
+
+     
+     
+
+
+      ;
+
+      for (; __first != __last; ++__first, (void)++__result)
+ *__result = __unary_op(*__first);
+      return __result;
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator, typename _BinaryOperation>
+    _OutputIterator
+    transform(_InputIterator1 __first1, _InputIterator1 __last1,
+       _InputIterator2 __first2, _OutputIterator __result,
+       _BinaryOperation __binary_op)
+    {
+
+     
+     
+     
+
+
+      ;
+
+      for (; __first1 != __last1; ++__first1, (void)++__first2, ++__result)
+ *__result = __binary_op(*__first1, *__first2);
+      return __result;
+    }
+  template<typename _ForwardIterator, typename _Tp>
+    void
+    replace(_ForwardIterator __first, _ForwardIterator __last,
+     const _Tp& __old_value, const _Tp& __new_value)
+    {
+
+     
+
+     
+
+     
+
+      ;
+
+      for (; __first != __last; ++__first)
+ if (*__first == __old_value)
+   *__first = __new_value;
+    }
+  template<typename _ForwardIterator, typename _Predicate, typename _Tp>
+    void
+    replace_if(_ForwardIterator __first, _ForwardIterator __last,
+        _Predicate __pred, const _Tp& __new_value)
+    {
+
+     
+
+     
+
+     
+
+      ;
+
+      for (; __first != __last; ++__first)
+ if (__pred(*__first))
+   *__first = __new_value;
+    }
+  template<typename _ForwardIterator, typename _Generator>
+    void
+    generate(_ForwardIterator __first, _ForwardIterator __last,
+      _Generator __gen)
+    {
+
+     
+     
+
+      ;
+
+      for (; __first != __last; ++__first)
+ *__first = __gen();
+    }
+  template<typename _OutputIterator, typename _Size, typename _Generator>
+    _OutputIterator
+    generate_n(_OutputIterator __first, _Size __n, _Generator __gen)
+    {
+
+     
+
+
+
+      for (__decltype(__n + 0) __niter = __n;
+    __niter > 0; --__niter, (void) ++__first)
+ *__first = __gen();
+      return __first;
+    }
+  template<typename _InputIterator, typename _OutputIterator>
+    inline _OutputIterator
+    unique_copy(_InputIterator __first, _InputIterator __last,
+  _OutputIterator __result)
+    {
+
+     
+     
+
+     
+
+      ;
+
+      if (__first == __last)
+ return __result;
+      return std::__unique_copy(__first, __last, __result,
+    __gnu_cxx::__ops::__iter_equal_to_iter(),
+    std::__iterator_category(__first),
+    std::__iterator_category(__result));
+    }
+  template<typename _InputIterator, typename _OutputIterator,
+    typename _BinaryPredicate>
+    inline _OutputIterator
+    unique_copy(_InputIterator __first, _InputIterator __last,
+  _OutputIterator __result,
+  _BinaryPredicate __binary_pred)
+    {
+
+     
+     
+
+      ;
+
+      if (__first == __last)
+ return __result;
+      return std::__unique_copy(__first, __last, __result,
+   __gnu_cxx::__ops::__iter_comp_iter(__binary_pred),
+    std::__iterator_category(__first),
+    std::__iterator_category(__result));
+    }
+  template<typename _RandomAccessIterator>
+    inline void
+    random_shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last)
+    {
+
+     
+
+      ;
+
+      if (__first != __last)
+ for (_RandomAccessIterator __i = __first + 1; __i != __last; ++__i)
+   {
+
+     _RandomAccessIterator __j = __first
+     + std::rand() % ((__i - __first) + 1);
+     if (__i != __j)
+       std::iter_swap(__i, __j);
+   }
+    }
+  template<typename _RandomAccessIterator, typename _RandomNumberGenerator>
+    void
+    random_shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last,
+
+     _RandomNumberGenerator&& __rand)
+
+
+
+    {
+
+     
+
+      ;
+
+      if (__first == __last)
+ return;
+      for (_RandomAccessIterator __i = __first + 1; __i != __last; ++__i)
+ {
+   _RandomAccessIterator __j = __first + __rand((__i - __first) + 1);
+   if (__i != __j)
+     std::iter_swap(__i, __j);
+ }
+    }
+  template<typename _ForwardIterator, typename _Predicate>
+    inline _ForwardIterator
+    partition(_ForwardIterator __first, _ForwardIterator __last,
+       _Predicate __pred)
+    {
+
+     
+
+     
+
+      ;
+
+      return std::__partition(__first, __last, __pred,
+         std::__iterator_category(__first));
+    }
+  template<typename _RandomAccessIterator>
+    inline void
+    partial_sort(_RandomAccessIterator __first,
+   _RandomAccessIterator __middle,
+   _RandomAccessIterator __last)
+    {
+
+     
+
+     
+
+      ;
+      ;
+      ;
+
+      std::__partial_sort(__first, __middle, __last,
+     __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline void
+    partial_sort(_RandomAccessIterator __first,
+   _RandomAccessIterator __middle,
+   _RandomAccessIterator __last,
+   _Compare __comp)
+    {
+
+     
+
+     
+
+
+      ;
+      ;
+      ;
+
+      std::__partial_sort(__first, __middle, __last,
+     __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+  template<typename _RandomAccessIterator>
+    inline void
+    nth_element(_RandomAccessIterator __first, _RandomAccessIterator __nth,
+  _RandomAccessIterator __last)
+    {
+
+     
+
+     
+
+      ;
+      ;
+      ;
+
+      if (__first == __last || __nth == __last)
+ return;
+
+      std::__introselect(__first, __nth, __last,
+    std::__lg(__last - __first) * 2,
+    __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline void
+    nth_element(_RandomAccessIterator __first, _RandomAccessIterator __nth,
+  _RandomAccessIterator __last, _Compare __comp)
+    {
+
+     
+
+     
+
+
+      ;
+      ;
+      ;
+
+      if (__first == __last || __nth == __last)
+ return;
+
+      std::__introselect(__first, __nth, __last,
+    std::__lg(__last - __first) * 2,
+    __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+  template<typename _RandomAccessIterator>
+    inline void
+    sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
+    {
+
+     
+
+     
+
+      ;
+      ;
+
+      std::__sort(__first, __last, __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline void
+    sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
+  _Compare __comp)
+    {
+
+     
+
+     
+
+
+      ;
+      ;
+
+      std::__sort(__first, __last, __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator, typename _Compare>
+    _OutputIterator
+    __merge(_InputIterator1 __first1, _InputIterator1 __last1,
+     _InputIterator2 __first2, _InputIterator2 __last2,
+     _OutputIterator __result, _Compare __comp)
+    {
+      while (__first1 != __last1 && __first2 != __last2)
+ {
+   if (__comp(__first2, __first1))
+     {
+       *__result = *__first2;
+       ++__first2;
+     }
+   else
+     {
+       *__result = *__first1;
+       ++__first1;
+     }
+   ++__result;
+ }
+      return std::copy(__first2, __last2,
+         std::copy(__first1, __last1, __result));
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator>
+    inline _OutputIterator
+    merge(_InputIterator1 __first1, _InputIterator1 __last1,
+   _InputIterator2 __first2, _InputIterator2 __last2,
+   _OutputIterator __result)
+    {
+
+     
+     
+     
+
+     
+
+     
+
+
+      ;
+      ;
+      ;
+      ;
+
+      return std::__merge(__first1, __last1,
+         __first2, __last2, __result,
+         __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator, typename _Compare>
+    inline _OutputIterator
+    merge(_InputIterator1 __first1, _InputIterator1 __last1,
+   _InputIterator2 __first2, _InputIterator2 __last2,
+   _OutputIterator __result, _Compare __comp)
+    {
+
+     
+     
+     
+
+     
+
+     
+
+
+      ;
+      ;
+      ;
+      ;
+
+      return std::__merge(__first1, __last1,
+    __first2, __last2, __result,
+    __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline void
+    __stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
+    _Compare __comp)
+    {
+      typedef typename iterator_traits<_RandomAccessIterator>::value_type
+ _ValueType;
+      typedef typename iterator_traits<_RandomAccessIterator>::difference_type
+ _DistanceType;
+
+      typedef _Temporary_buffer<_RandomAccessIterator, _ValueType> _TmpBuf;
+      _TmpBuf __buf(__first, __last);
+
+      if (__buf.begin() == 0)
+ std::__inplace_stable_sort(__first, __last, __comp);
+      else
+ std::__stable_sort_adaptive(__first, __last, __buf.begin(),
+        _DistanceType(__buf.size()), __comp);
+    }
+  template<typename _RandomAccessIterator>
+    inline void
+    stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
+    {
+
+     
+
+     
+
+      ;
+      ;
+
+      std::__stable_sort(__first, __last,
+        __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _RandomAccessIterator, typename _Compare>
+    inline void
+    stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
+  _Compare __comp)
+    {
+
+     
+
+     
+
+
+      ;
+      ;
+
+      std::__stable_sort(__first, __last,
+        __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator,
+    typename _Compare>
+    _OutputIterator
+    __set_union(_InputIterator1 __first1, _InputIterator1 __last1,
+  _InputIterator2 __first2, _InputIterator2 __last2,
+  _OutputIterator __result, _Compare __comp)
+    {
+      while (__first1 != __last1 && __first2 != __last2)
+ {
+   if (__comp(__first1, __first2))
+     {
+       *__result = *__first1;
+       ++__first1;
+     }
+   else if (__comp(__first2, __first1))
+     {
+       *__result = *__first2;
+       ++__first2;
+     }
+   else
+     {
+       *__result = *__first1;
+       ++__first1;
+       ++__first2;
+     }
+   ++__result;
+ }
+      return std::copy(__first2, __last2,
+         std::copy(__first1, __last1, __result));
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator>
+    inline _OutputIterator
+    set_union(_InputIterator1 __first1, _InputIterator1 __last1,
+       _InputIterator2 __first2, _InputIterator2 __last2,
+       _OutputIterator __result)
+    {
+
+     
+     
+     
+
+     
+
+     
+
+
+     
+
+
+      ;
+      ;
+      ;
+      ;
+
+      return std::__set_union(__first1, __last1,
+    __first2, __last2, __result,
+    __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator, typename _Compare>
+    inline _OutputIterator
+    set_union(_InputIterator1 __first1, _InputIterator1 __last1,
+       _InputIterator2 __first2, _InputIterator2 __last2,
+       _OutputIterator __result, _Compare __comp)
+    {
+
+     
+     
+     
+
+     
+
+     
+
+
+     
+
+
+      ;
+      ;
+      ;
+      ;
+
+      return std::__set_union(__first1, __last1,
+    __first2, __last2, __result,
+    __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator,
+    typename _Compare>
+    _OutputIterator
+    __set_intersection(_InputIterator1 __first1, _InputIterator1 __last1,
+         _InputIterator2 __first2, _InputIterator2 __last2,
+         _OutputIterator __result, _Compare __comp)
+    {
+      while (__first1 != __last1 && __first2 != __last2)
+ if (__comp(__first1, __first2))
+   ++__first1;
+ else if (__comp(__first2, __first1))
+   ++__first2;
+ else
+   {
+     *__result = *__first1;
+     ++__first1;
+     ++__first2;
+     ++__result;
+   }
+      return __result;
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator>
+    inline _OutputIterator
+    set_intersection(_InputIterator1 __first1, _InputIterator1 __last1,
+       _InputIterator2 __first2, _InputIterator2 __last2,
+       _OutputIterator __result)
+    {
+
+     
+     
+     
+
+     
+
+
+     
+
+
+      ;
+      ;
+      ;
+      ;
+
+      return std::__set_intersection(__first1, __last1,
+         __first2, __last2, __result,
+         __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator, typename _Compare>
+    inline _OutputIterator
+    set_intersection(_InputIterator1 __first1, _InputIterator1 __last1,
+       _InputIterator2 __first2, _InputIterator2 __last2,
+       _OutputIterator __result, _Compare __comp)
+    {
+
+     
+     
+     
+
+     
+
+
+     
+
+
+      ;
+      ;
+      ;
+      ;
+
+      return std::__set_intersection(__first1, __last1,
+    __first2, __last2, __result,
+    __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator,
+    typename _Compare>
+    _OutputIterator
+    __set_difference(_InputIterator1 __first1, _InputIterator1 __last1,
+       _InputIterator2 __first2, _InputIterator2 __last2,
+       _OutputIterator __result, _Compare __comp)
+    {
+      while (__first1 != __last1 && __first2 != __last2)
+ if (__comp(__first1, __first2))
+   {
+     *__result = *__first1;
+     ++__first1;
+     ++__result;
+   }
+ else if (__comp(__first2, __first1))
+   ++__first2;
+ else
+   {
+     ++__first1;
+     ++__first2;
+   }
+      return std::copy(__first1, __last1, __result);
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator>
+    inline _OutputIterator
+    set_difference(_InputIterator1 __first1, _InputIterator1 __last1,
+     _InputIterator2 __first2, _InputIterator2 __last2,
+     _OutputIterator __result)
+    {
+
+     
+     
+     
+
+     
+
+
+     
+
+
+      ;
+      ;
+      ;
+      ;
+
+      return std::__set_difference(__first1, __last1,
+       __first2, __last2, __result,
+       __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator, typename _Compare>
+    inline _OutputIterator
+    set_difference(_InputIterator1 __first1, _InputIterator1 __last1,
+     _InputIterator2 __first2, _InputIterator2 __last2,
+     _OutputIterator __result, _Compare __comp)
+    {
+
+     
+     
+     
+
+     
+
+
+     
+
+
+      ;
+      ;
+      ;
+      ;
+
+      return std::__set_difference(__first1, __last1,
+       __first2, __last2, __result,
+       __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator,
+    typename _Compare>
+    _OutputIterator
+    __set_symmetric_difference(_InputIterator1 __first1,
+          _InputIterator1 __last1,
+          _InputIterator2 __first2,
+          _InputIterator2 __last2,
+          _OutputIterator __result,
+          _Compare __comp)
+    {
+      while (__first1 != __last1 && __first2 != __last2)
+ if (__comp(__first1, __first2))
+   {
+     *__result = *__first1;
+     ++__first1;
+     ++__result;
+   }
+ else if (__comp(__first2, __first1))
+   {
+     *__result = *__first2;
+     ++__first2;
+     ++__result;
+   }
+ else
+   {
+     ++__first1;
+     ++__first2;
+   }
+      return std::copy(__first2, __last2,
+         std::copy(__first1, __last1, __result));
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator>
+    inline _OutputIterator
+    set_symmetric_difference(_InputIterator1 __first1, _InputIterator1 __last1,
+        _InputIterator2 __first2, _InputIterator2 __last2,
+        _OutputIterator __result)
+    {
+
+     
+     
+     
+
+     
+
+     
+
+
+     
+
+
+      ;
+      ;
+      ;
+      ;
+
+      return std::__set_symmetric_difference(__first1, __last1,
+     __first2, __last2, __result,
+     __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _InputIterator1, typename _InputIterator2,
+    typename _OutputIterator, typename _Compare>
+    inline _OutputIterator
+    set_symmetric_difference(_InputIterator1 __first1, _InputIterator1 __last1,
+        _InputIterator2 __first2, _InputIterator2 __last2,
+        _OutputIterator __result,
+        _Compare __comp)
+    {
+
+     
+     
+     
+
+     
+
+     
+
+
+     
+
+
+      ;
+      ;
+      ;
+      ;
+
+      return std::__set_symmetric_difference(__first1, __last1,
+    __first2, __last2, __result,
+    __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+  template<typename _ForwardIterator, typename _Compare>
+    constexpr
+    _ForwardIterator
+    __min_element(_ForwardIterator __first, _ForwardIterator __last,
+    _Compare __comp)
+    {
+      if (__first == __last)
+ return __first;
+      _ForwardIterator __result = __first;
+      while (++__first != __last)
+ if (__comp(__first, __result))
+   __result = __first;
+      return __result;
+    }
+  template<typename _ForwardIterator>
+    constexpr
+    _ForwardIterator
+    inline min_element(_ForwardIterator __first, _ForwardIterator __last)
+    {
+
+     
+     
+
+      ;
+      ;
+
+      return std::__min_element(__first, __last,
+    __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _ForwardIterator, typename _Compare>
+    constexpr
+    inline _ForwardIterator
+    min_element(_ForwardIterator __first, _ForwardIterator __last,
+  _Compare __comp)
+    {
+
+     
+     
+
+
+      ;
+      ;
+
+      return std::__min_element(__first, __last,
+    __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+  template<typename _ForwardIterator, typename _Compare>
+    constexpr
+    _ForwardIterator
+    __max_element(_ForwardIterator __first, _ForwardIterator __last,
+    _Compare __comp)
+    {
+      if (__first == __last) return __first;
+      _ForwardIterator __result = __first;
+      while (++__first != __last)
+ if (__comp(__result, __first))
+   __result = __first;
+      return __result;
+    }
+  template<typename _ForwardIterator>
+    constexpr
+    inline _ForwardIterator
+    max_element(_ForwardIterator __first, _ForwardIterator __last)
+    {
+
+     
+     
+
+      ;
+      ;
+
+      return std::__max_element(__first, __last,
+    __gnu_cxx::__ops::__iter_less_iter());
+    }
+  template<typename _ForwardIterator, typename _Compare>
+    constexpr
+    inline _ForwardIterator
+    max_element(_ForwardIterator __first, _ForwardIterator __last,
+  _Compare __comp)
+    {
+
+     
+     
+
+
+      ;
+      ;
+
+      return std::__max_element(__first, __last,
+    __gnu_cxx::__ops::__iter_comp_iter(__comp));
+    }
+
+
+
+  template<typename _InputIterator, typename _RandomAccessIterator,
+           typename _Size, typename _UniformRandomBitGenerator>
+    _RandomAccessIterator
+    __sample(_InputIterator __first, _InputIterator __last, input_iterator_tag,
+      _RandomAccessIterator __out, random_access_iterator_tag,
+      _Size __n, _UniformRandomBitGenerator&& __g)
+    {
+      using __distrib_type = uniform_int_distribution<_Size>;
+      using __param_type = typename __distrib_type::param_type;
+      __distrib_type __d{};
+      _Size __sample_sz = 0;
+      while (__first != __last && __sample_sz != __n)
+ {
+   __out[__sample_sz++] = *__first;
+   ++__first;
+ }
+      for (auto __pop_sz = __sample_sz; __first != __last;
+   ++__first, (void) ++__pop_sz)
+ {
+   const auto __k = __d(__g, __param_type{0, __pop_sz});
+   if (__k < __n)
+     __out[__k] = *__first;
+ }
+      return __out + __sample_sz;
+    }
+
+
+  template<typename _ForwardIterator, typename _OutputIterator, typename _Cat,
+           typename _Size, typename _UniformRandomBitGenerator>
+    _OutputIterator
+    __sample(_ForwardIterator __first, _ForwardIterator __last,
+      forward_iterator_tag,
+      _OutputIterator __out, _Cat,
+      _Size __n, _UniformRandomBitGenerator&& __g)
+    {
+      using __distrib_type = uniform_int_distribution<_Size>;
+      using __param_type = typename __distrib_type::param_type;
+      using _USize = make_unsigned_t<_Size>;
+      using _Gen = remove_reference_t<_UniformRandomBitGenerator>;
+      using __uc_type = common_type_t<typename _Gen::result_type, _USize>;
+
+      __distrib_type __d{};
+      _Size __unsampled_sz = std::distance(__first, __last);
+      __n = std::min(__n, __unsampled_sz);
+
+
+
+
+      const __uc_type __urngrange = __g.max() - __g.min();
+      if (__urngrange / __uc_type(__unsampled_sz) >= __uc_type(__unsampled_sz))
+
+
+        {
+   while (__n != 0 && __unsampled_sz >= 2)
+     {
+       const pair<_Size, _Size> __p =
+  __gen_two_uniform_ints(__unsampled_sz, __unsampled_sz - 1, __g);
+
+       --__unsampled_sz;
+       if (__p.first < __n)
+  {
+    *__out++ = *__first;
+    --__n;
+  }
+
+       ++__first;
+
+       if (__n == 0) break;
+
+       --__unsampled_sz;
+       if (__p.second < __n)
+  {
+    *__out++ = *__first;
+    --__n;
+  }
+
+       ++__first;
+     }
+        }
+
+
+
+      for (; __n != 0; ++__first)
+ if (__d(__g, __param_type{0, --__unsampled_sz}) < __n)
+   {
+     *__out++ = *__first;
+     --__n;
+   }
+      return __out;
+    }
+
+
+}
+
+
+
+namespace boost_swap_impl
+{
+  template<class T>
+ 
+  void swap_impl(T& left, T& right)
+  {
+    using namespace std;
+    swap(left,right);
+  }
+
+  template<class T, std::size_t N>
+ 
+  void swap_impl(T (& left)[N], T (& right)[N])
+  {
+    for (std::size_t i = 0; i < N; ++i)
+    {
+      ::boost_swap_impl::swap_impl(left[i], right[i]);
+    }
+  }
+}
+
+namespace boost
+{
+  template<class T1, class T2>
+ 
+  void swap(T1& left, T2& right)
+  {
+    ::boost_swap_impl::swap_impl(left, right);
+  }
+}
+namespace boost {
+
+class bad_optional_access : public std::logic_error
+{
+public:
+  bad_optional_access()
+    : std::logic_error("Attempted to access the value of an uninitialized optional object.")
+    {}
+};
+
+}
+
+
+
+       
+       
+
+
+
+
+
+namespace
+boost
+    {
+    namespace
+    exception_detail
+        {
+        template <class T>
+        class
+        refcount_ptr
+            {
+            public:
+
+            refcount_ptr():
+                px_(0)
+                {
+                }
+
+            ~refcount_ptr()
+                {
+                release();
+                }
+
+            refcount_ptr( refcount_ptr const & x ):
+                px_(x.px_)
+                {
+                add_ref();
+                }
+
+            refcount_ptr &
+            operator=( refcount_ptr const & x )
+                {
+                adopt(x.px_);
+                return *this;
+                }
+
+            void
+            adopt( T * px )
+                {
+                release();
+                px_=px;
+                add_ref();
+                }
+
+            T *
+            get() const
+                {
+                return px_;
+                }
+
+            private:
+
+            T * px_;
+
+            void
+            add_ref()
+                {
+                if( px_ )
+                    px_->add_ref();
+                }
+
+            void
+            release()
+                {
+                if( px_ && px_->release() )
+                    px_=0;
+                }
+            };
+        }
+
+
+
+    template <class Tag,class T>
+    class error_info;
+
+    typedef error_info<struct throw_function_,char const *> throw_function;
+    typedef error_info<struct throw_file_,char const *> throw_file;
+    typedef error_info<struct throw_line_,int> throw_line;
+
+    template <>
+    class
+    error_info<throw_function_,char const *>
+        {
+        public:
+        typedef char const * value_type;
+        value_type v_;
+        explicit
+        error_info( value_type v ):
+            v_(v)
+            {
+            }
+        };
+
+    template <>
+    class
+    error_info<throw_file_,char const *>
+        {
+        public:
+        typedef char const * value_type;
+        value_type v_;
+        explicit
+        error_info( value_type v ):
+            v_(v)
+            {
+            }
+        };
+
+    template <>
+    class
+    error_info<throw_line_,int>
+        {
+        public:
+        typedef int value_type;
+        value_type v_;
+        explicit
+        error_info( value_type v ):
+            v_(v)
+            {
+            }
+        };
+
+
+
+
+
+    class exception;
+
+
+
+
+
+    template <class T>
+    class shared_ptr;
+
+    namespace
+    exception_detail
+        {
+        class error_info_base;
+        struct type_info_;
+
+        struct
+        error_info_container
+            {
+            virtual char const * diagnostic_information( char const * ) const = 0;
+            virtual shared_ptr<error_info_base> get( type_info_ const & ) const = 0;
+            virtual void set( shared_ptr<error_info_base> const &, type_info_ const & ) = 0;
+            virtual void add_ref() const = 0;
+            virtual bool release() const = 0;
+            virtual refcount_ptr<exception_detail::error_info_container> clone() const = 0;
+
+            protected:
+
+            ~error_info_container() throw()
+                {
+                }
+            };
+
+        template <class>
+        struct get_info;
+
+        template <>
+        struct get_info<throw_function>;
+
+        template <>
+        struct get_info<throw_file>;
+
+        template <>
+        struct get_info<throw_line>;
+
+        template <class>
+        struct set_info_rv;
+
+        template <>
+        struct set_info_rv<throw_function>;
+
+        template <>
+        struct set_info_rv<throw_file>;
+
+        template <>
+        struct set_info_rv<throw_line>;
+
+        char const * get_diagnostic_information( exception const &, char const * );
+
+        void copy_boost_exception( exception *, exception const * );
+
+        template <class E,class Tag,class T>
+        E const & set_info( E const &, error_info<Tag,T> const & );
+
+        template <class E>
+        E const & set_info( E const &, throw_function const & );
+
+        template <class E>
+        E const & set_info( E const &, throw_file const & );
+
+        template <class E>
+        E const & set_info( E const &, throw_line const & );
+        }
+
+
+
+
+
+    class
+    exception
+        {
+
+        public:
+        template <class Tag> void set( typename Tag::type const & );
+        template <class Tag> typename Tag::type const * get() const;
+
+
+        protected:
+
+        exception():
+            throw_function_(0),
+            throw_file_(0),
+            throw_line_(-1)
+            {
+            }
+        virtual ~exception() throw()
+
+            = 0
+
+            ;
+
+
+
+
+        private:
+
+        template <class E>
+        friend E const & exception_detail::set_info( E const &, throw_function const & );
+
+        template <class E>
+        friend E const & exception_detail::set_info( E const &, throw_file const & );
+
+        template <class E>
+        friend E const & exception_detail::set_info( E const &, throw_line const & );
+
+        template <class E,class Tag,class T>
+        friend E const & exception_detail::set_info( E const &, error_info<Tag,T> const & );
+
+        friend char const * exception_detail::get_diagnostic_information( exception const &, char const * );
+
+        template <class>
+        friend struct exception_detail::get_info;
+        friend struct exception_detail::get_info<throw_function>;
+        friend struct exception_detail::get_info<throw_file>;
+        friend struct exception_detail::get_info<throw_line>;
+        template <class>
+        friend struct exception_detail::set_info_rv;
+        friend struct exception_detail::set_info_rv<throw_function>;
+        friend struct exception_detail::set_info_rv<throw_file>;
+        friend struct exception_detail::set_info_rv<throw_line>;
+        friend void exception_detail::copy_boost_exception( exception *, exception const * );
+
+        mutable exception_detail::refcount_ptr<exception_detail::error_info_container> data_;
+        mutable char const * throw_function_;
+        mutable char const * throw_file_;
+        mutable int throw_line_;
+        };
+
+
+
+
+
+    inline
+    exception::
+    ~exception() throw()
+        {
+        }
+
+    namespace
+    exception_detail
+        {
+        template <class E>
+        E const &
+        set_info( E const & x, throw_function const & y )
+            {
+            x.throw_function_=y.v_;
+            return x;
+            }
+
+        template <class E>
+        E const &
+        set_info( E const & x, throw_file const & y )
+            {
+            x.throw_file_=y.v_;
+            return x;
+            }
+
+        template <class E>
+        E const &
+        set_info( E const & x, throw_line const & y )
+            {
+            x.throw_line_=y.v_;
+            return x;
+            }
+        }
+
+
+
+    namespace
+    exception_detail
+        {
+
+
+
+
+        template <class T>
+        struct
+        error_info_injector:
+            public T,
+            public exception
+            {
+            explicit
+            error_info_injector( T const & x ):
+                T(x)
+                {
+                }
+
+            ~error_info_injector() throw()
+                {
+                }
+            };
+
+
+
+
+
+        struct large_size { char c[256]; };
+        large_size dispatch_boost_exception( exception const * );
+
+        struct small_size { };
+        small_size dispatch_boost_exception( void const * );
+
+        template <class,int>
+        struct enable_error_info_helper;
+
+        template <class T>
+        struct
+        enable_error_info_helper<T,sizeof(large_size)>
+            {
+            typedef T type;
+            };
+
+        template <class T>
+        struct
+        enable_error_info_helper<T,sizeof(small_size)>
+            {
+            typedef error_info_injector<T> type;
+            };
+
+        template <class T>
+        struct
+        enable_error_info_return_type
+            {
+            typedef typename enable_error_info_helper<T,sizeof(exception_detail::dispatch_boost_exception(static_cast<T *>(0)))>::type type;
+            };
+        }
+
+    template <class T>
+    inline
+    typename
+    exception_detail::enable_error_info_return_type<T>::type
+    enable_error_info( T const & x )
+        {
+        typedef typename exception_detail::enable_error_info_return_type<T>::type rt;
+        return rt(x);
+        }
+
+
+
+    namespace
+    exception_detail
+        {
+
+
+
+
+        class
+        clone_base
+            {
+            public:
+
+            virtual clone_base const * clone() const = 0;
+            virtual void rethrow() const = 0;
+
+            virtual
+            ~clone_base() throw()
+                {
+                }
+            };
+
+
+
+
+
+        inline
+        void
+        copy_boost_exception( exception * a, exception const * b )
+            {
+            refcount_ptr<error_info_container> data;
+            if( error_info_container * d=b->data_.get() )
+                data = d->clone();
+            a->throw_file_ = b->throw_file_;
+            a->throw_line_ = b->throw_line_;
+            a->throw_function_ = b->throw_function_;
+            a->data_ = data;
+            }
+
+        inline
+        void
+        copy_boost_exception( void *, void const * )
+            {
+            }
+
+
+
+
+
+        template <class T>
+        class
+        clone_impl:
+            public T,
+            public virtual clone_base
+            {
+            struct clone_tag { };
+            clone_impl( clone_impl const & x, clone_tag ):
+                T(x)
+                {
+                copy_boost_exception(this,&x);
+                }
+
+            public:
+
+            explicit
+            clone_impl( T const & x ):
+                T(x)
+                {
+                copy_boost_exception(this,&x);
+                }
+
+            ~clone_impl() throw()
+                {
+                }
+
+            private:
+
+            clone_base const *
+            clone() const
+                {
+                return new clone_impl(*this,clone_tag());
+                }
+
+            void
+            rethrow() const
+                {
+                throw*this;
+                }
+            };
+        }
+
+
+
+
+
+    template <class T>
+    inline
+    exception_detail::clone_impl<T>
+    enable_current_exception( T const & x )
+        {
+        return exception_detail::clone_impl<T>(x);
+        }
+    }
+
+namespace boost
+{
+
+namespace detail
+{
+
+inline void current_function_helper()
+{
+}
+
+}
+
+}
+
+
+
+
+
+
+
+namespace boost
+{
+
+
+
+
+
+
+inline void throw_exception_assert_compatibility( std::exception const & ) { }
+
+template<class E> __attribute__ ((__noreturn__)) inline void throw_exception( E const & e )
+{
+
+
+    throw_exception_assert_compatibility(e);
+
+
+    throw enable_current_exception(enable_error_info(e));
+
+
+
+}
+
+
+
+
+    namespace
+    exception_detail
+    {
+        template <class E>
+        __attribute__ ((__noreturn__))
+        void
+        throw_exception_( E const & x, char const * current_function, char const * file, int line )
+        {
+            boost::throw_exception(
+                set_info(
+                    set_info(
+                        set_info(
+                            enable_error_info(x),
+                            throw_function(current_function)),
+                        throw_file(file)),
+                    throw_line(line)));
+        }
+    }
+
+}
+namespace boost {
+
+
+
+  template <class T>
+  struct type {};
+
+}
+namespace mpl_{
+
+   template <bool B> struct bool_;
+   template <class I, I val> struct integral_c;
+   struct integral_c_tag;
+}
+
+namespace boost
+{
+   namespace mpl
+   {
+      using ::mpl_::bool_;
+      using ::mpl_::integral_c;
+      using ::mpl_::integral_c_tag;
+   }
+}
+
+
+
+namespace boost{
+
+   template <class T, T val>
+   struct integral_constant
+   {
+      typedef mpl::integral_c_tag tag;
+      typedef T value_type;
+      typedef integral_constant<T, val> type;
+      static const T value = val;
+
+
+
+
+      template <class U>
+      static U& dereference(U* p) { return *p; }
+
+      operator const mpl::integral_c<T, val>& ()const
+      {
+         static const char data[sizeof(long)] = { 0 };
+         return dereference(reinterpret_cast<const mpl::integral_c<T, val>*>(&data));
+      }
+      constexpr operator T()const { return val; }
+   };
+
+   template <class T, T val>
+   T const integral_constant<T, val>::value;
+
+   template <bool val>
+   struct integral_constant<bool, val>
+   {
+      typedef mpl::integral_c_tag tag;
+      typedef bool value_type;
+      typedef integral_constant<bool, val> type;
+      static const bool value = val;
+
+
+
+
+      template <class T>
+      static T& dereference(T* p) { return *p; }
+
+      operator const mpl::bool_<val>& ()const
+      {
+         static const char data = 0;
+         return dereference(reinterpret_cast<const mpl::bool_<val>*>(&data));
+      }
+      constexpr operator bool()const { return val; }
+   };
+
+   template <bool val>
+   bool const integral_constant<bool, val>::value;
+
+   typedef integral_constant<bool, true> true_type;
+   typedef integral_constant<bool, false> false_type;
+
+}
+namespace boost {
+
+template <typename T> struct alignment_of;
+
+
+namespace detail {
+
+
+
+
+
+template <typename T>
+struct alignment_of_hack
+{
+    char c;
+    T t;
+    alignment_of_hack();
+};
+
+
+
+
+template <unsigned A, unsigned S>
+struct alignment_logic
+{
+    static const std::size_t value = A < S ? A : S;
+};
+
+
+template< typename T >
+struct alignment_of_impl
+{
+   static const std::size_t value = __alignof__(T);
+
+};
+
+}
+
+template <class T> struct alignment_of : public integral_constant<std::size_t, ::boost::detail::alignment_of_impl<T>::value>{};
+
+
+
+template <typename T> struct alignment_of<T&> : public alignment_of<T*>{};
+template<> struct alignment_of<void> : integral_constant<std::size_t, 0>{};
+
+template<> struct alignment_of<void const> : integral_constant<std::size_t, 0>{};
+template<> struct alignment_of<void const volatile> : integral_constant<std::size_t, 0>{};
+template<> struct alignment_of<void volatile> : integral_constant<std::size_t, 0>{};
+
+
+}
+namespace boost {
+
+template <bool b, class T, class U> struct conditional { typedef T type; };
+template <class T, class U> struct conditional<false, T, U> { typedef U type; };
+
+}
+namespace boost {
+namespace type_traits {
+
+typedef char yes_type;
+struct no_type
+{
+   char padding[8];
+};
+
+}
+}
+
+namespace boost{
+
+   namespace detail{
+
+      struct is_default_constructible_imp
+      {
+         template<typename _Tp, typename = decltype(_Tp())>
+         static boost::type_traits::yes_type test(int);
+
+         template<typename>
+         static boost::type_traits::no_type test(...);
+      };
+   }
+
+
+
+
+   template <class T> struct is_default_constructible : public integral_constant<bool, sizeof(detail::is_default_constructible_imp::test<T>(0)) == sizeof(boost::type_traits::yes_type)>{};
+
+   template <class T, std::size_t N> struct is_default_constructible<T[N]> : public is_default_constructible<T>{};
+   template <class T> struct is_default_constructible<T[]> : public is_default_constructible<T>{};
+   template <class T> struct is_default_constructible<T&> : public integral_constant<bool, false>{};
+
+   template <class T> struct is_default_constructible<T&&> : public integral_constant<bool, false>{};
+
+   template <> struct is_default_constructible<void> : public integral_constant<bool, false>{};
+   template <> struct is_default_constructible<void const> : public integral_constant<bool, false>{};
+   template <> struct is_default_constructible<void volatile> : public integral_constant<bool, false>{};
+   template <> struct is_default_constructible<void const volatile> : public integral_constant<bool, false>{};
+}
+
+
+namespace boost {
+
+template <class T> struct has_nothrow_constructor : public integral_constant<bool, (__has_nothrow_constructor(T) && is_default_constructible<T>::value )>{};
+template<> struct has_nothrow_constructor<void> : public false_type {};
+
+template<> struct has_nothrow_constructor<void const> : public false_type{};
+template<> struct has_nothrow_constructor<void const volatile> : public false_type{};
+template<> struct has_nothrow_constructor<void volatile> : public false_type{};
+
+
+template <class T> struct has_nothrow_default_constructor : public has_nothrow_constructor<T>{};
+
+}
+namespace boost {
+
+template <class T>
+struct is_void : public false_type {};
+
+template<> struct is_void<void> : public true_type {};
+template<> struct is_void<const void> : public true_type{};
+template<> struct is_void<const volatile void> : public true_type{};
+template<> struct is_void<volatile void> : public true_type{};
+
+}
+namespace boost {
+
+
+
+
+
+
+template <class T> struct is_integral : public false_type {};
+template <class T> struct is_integral<const T> : public is_integral<T> {};
+template <class T> struct is_integral<volatile const T> : public is_integral<T>{};
+template <class T> struct is_integral<volatile T> : public is_integral<T>{};
+
+
+
+
+template<> struct is_integral<unsigned char> : public true_type {};
+template<> struct is_integral<unsigned short> : public true_type{};
+template<> struct is_integral<unsigned int> : public true_type{};
+template<> struct is_integral<unsigned long> : public true_type{};
+
+template<> struct is_integral<signed char> : public true_type{};
+template<> struct is_integral<short> : public true_type{};
+template<> struct is_integral<int> : public true_type{};
+template<> struct is_integral<long> : public true_type{};
+
+template<> struct is_integral<char> : public true_type{};
+template<> struct is_integral<bool> : public true_type{};
+
+
+
+
+
+template<> struct is_integral<wchar_t> : public true_type{};
+template<> struct is_integral< ::boost::ulong_long_type> : public true_type{};
+template<> struct is_integral< ::boost::long_long_type> : public true_type{};
+
+
+
+
+
+
+template<> struct is_integral<boost::int128_type> : public true_type{};
+template<> struct is_integral<boost::uint128_type> : public true_type{};
+
+
+template<> struct is_integral<char16_t> : public true_type{};
+
+
+template<> struct is_integral<char32_t> : public true_type{};
+
+
+
+
+}
+namespace boost {
+
+
+   template <class T> struct is_floating_point : public false_type{};
+   template <class T> struct is_floating_point<const T> : public is_floating_point<T>{};
+   template <class T> struct is_floating_point<volatile const T> : public is_floating_point<T>{};
+   template <class T> struct is_floating_point<volatile T> : public is_floating_point<T>{};
+   template<> struct is_floating_point<float> : public true_type{};
+   template<> struct is_floating_point<double> : public true_type{};
+   template<> struct is_floating_point<long double> : public true_type{};
+
+
+   template<> struct is_floating_point<__float128> : public true_type{};
+
+
+}
+
+namespace boost {
+
+template <class T>
+struct is_arithmetic : public integral_constant<bool, is_integral<T>::value || is_floating_point<T>::value> {};
+
+}
+namespace boost {
+template <class T> struct is_enum : public integral_constant<bool, __is_enum(T)> {};
+
+
+
+}
+namespace boost {
+
+
+
+
+template <class T> struct is_pointer : public false_type{};
+template <class T> struct is_pointer<T*> : public true_type{};
+template <class T> struct is_pointer<T*const> : public true_type{};
+template <class T> struct is_pointer<T*const volatile> : public true_type{};
+template <class T> struct is_pointer<T*volatile> : public true_type{};
+}
+namespace boost {
+namespace type_traits {
+
+template <typename T>
+struct is_mem_fun_pointer_impl
+{
+    static const bool value = false;
+};
+
+
+
+
+
+template <class R, class T >
+struct is_mem_fun_pointer_impl<R (T::*)() > { static const bool value = true; };
+template <class R, class T >
+struct is_mem_fun_pointer_impl<R (T::*)( ...) > { static const bool value = true; };
+
+
+template <class R, class T >
+struct is_mem_fun_pointer_impl<R (T::*)() const > { static const bool value = true; };
+
+template <class R, class T >
+struct is_mem_fun_pointer_impl<R (T::*)() volatile > { static const bool value = true; };
+
+template <class R, class T >
+struct is_mem_fun_pointer_impl<R (T::*)() const volatile > { static const bool value = true; };
+
+template <class R, class T >
+struct is_mem_fun_pointer_impl<R (T::*)( ...) const > { static const bool value = true; };
+
+template <class R, class T >
+struct is_mem_fun_pointer_impl<R (T::*)( ...) volatile > { static const bool value = true; };
+
+template <class R, class T >
+struct is_mem_fun_pointer_impl<R (T::*)( ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0>
+struct is_mem_fun_pointer_impl<R (T::*)( T0) > { static const bool value = true; };
+template <class R, class T , class T0>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0>
+struct is_mem_fun_pointer_impl<R (T::*)( T0) const > { static const bool value = true; };
+
+template <class R, class T , class T0>
+struct is_mem_fun_pointer_impl<R (T::*)( T0) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0>
+struct is_mem_fun_pointer_impl<R (T::*)( T0) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 ...) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23 , class T24>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 , T24) > { static const bool value = true; };
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23 , class T24>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 , T24 ...) > { static const bool value = true; };
+
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23 , class T24>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 , T24) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23 , class T24>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 , T24) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23 , class T24>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 , T24) const volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23 , class T24>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 , T24 ...) const > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23 , class T24>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 , T24 ...) volatile > { static const bool value = true; };
+
+template <class R, class T , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23 , class T24>
+struct is_mem_fun_pointer_impl<R (T::*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 , T24 ...) const volatile > { static const bool value = true; };
+}
+}
+namespace boost {
+
+
+template <class T> struct remove_cv{ typedef T type; };
+template <class T> struct remove_cv<T const>{ typedef T type; };
+template <class T> struct remove_cv<T volatile>{ typedef T type; };
+template <class T> struct remove_cv<T const volatile>{ typedef T type; };
+
+
+template <class T, std::size_t N> struct remove_cv<T const[N]>{ typedef T type[N]; };
+template <class T, std::size_t N> struct remove_cv<T const volatile[N]>{ typedef T type[N]; };
+template <class T, std::size_t N> struct remove_cv<T volatile[N]>{ typedef T type[N]; };
+
+template <class T> struct remove_cv<T const[]>{ typedef T type[]; };
+template <class T> struct remove_cv<T const volatile[]>{ typedef T type[]; };
+template <class T> struct remove_cv<T volatile[]>{ typedef T type[]; };
+
+
+
+
+}
+namespace boost {
+
+
+
+
+
+template <class T> struct is_member_function_pointer
+   : public ::boost::integral_constant<bool, ::boost::type_traits::is_mem_fun_pointer_impl<typename remove_cv<T>::type>::value>{};
+}
+
+namespace boost {
+
+
+
+
+template <class T> struct is_member_pointer : public integral_constant<bool, ::boost::is_member_function_pointer<T>::value>{};
+template <class T, class U> struct is_member_pointer<U T::* > : public true_type{};
+
+
+template <class T, class U> struct is_member_pointer<U T::*const> : public true_type{};
+template <class T, class U> struct is_member_pointer<U T::*const volatile> : public true_type{};
+template <class T, class U> struct is_member_pointer<U T::*volatile> : public true_type{};
+
+
+
+
+}
+
+
+namespace boost {
+
+template <typename T>
+struct is_scalar
+   : public integral_constant<bool, ::boost::is_arithmetic<T>::value || ::boost::is_enum<T>::value || ::boost::is_pointer<T>::value || ::boost::is_member_pointer<T>::value>
+{};
+
+}
+namespace boost {
+
+
+template< typename T > struct is_POD;
+
+template <typename T> struct is_pod
+: public integral_constant<bool, ::boost::is_scalar<T>::value || ::boost::is_void<T>::value || __is_pod(T)>
+{};
+
+
+template <typename T, std::size_t sz> struct is_pod<T[sz]> : public is_pod<T>{};
+
+
+
+
+template<> struct is_pod<void> : public true_type{};
+
+
+template<> struct is_pod<void const> : public true_type{};
+template<> struct is_pod<void const volatile> : public true_type{};
+template<> struct is_pod<void volatile> : public true_type{};
+
+
+template<class T> struct is_POD : public is_pod<T>{};
+
+}
+namespace boost {
+   namespace detail{
+
+
+
+      union max_align
+      {
+         char c;
+         short s;
+         int i;
+         long l;
+
+         boost::long_long_type ll;
+
+
+         boost::int128_type i128;
+
+         float f;
+         double d;
+         long double ld;
+
+         __float128 f128;
+
+      };
+
+template <std::size_t Target, bool check> struct long_double_alignment{ typedef long double type; };
+template <std::size_t Target> struct long_double_alignment<Target, false>{ typedef boost::detail::max_align type; };
+
+template <std::size_t Target, bool check> struct double_alignment{ typedef double type; };
+template <std::size_t Target> struct double_alignment<Target, false>{ typedef typename long_double_alignment<Target, boost::alignment_of<long double>::value >= Target>::type type; };
+
+
+template <std::size_t Target, bool check> struct long_long_alignment{ typedef boost::long_long_type type; };
+template <std::size_t Target> struct long_long_alignment<Target, false>{ typedef typename double_alignment<Target, boost::alignment_of<double>::value >= Target>::type type; };
+
+
+template <std::size_t Target, bool check> struct long_alignment{ typedef long type; };
+
+template <std::size_t Target> struct long_alignment<Target, false>{ typedef typename long_long_alignment<Target, boost::alignment_of<boost::long_long_type>::value >= Target>::type type; };
+
+
+
+
+template <std::size_t Target, bool check> struct int_alignment{ typedef int type; };
+template <std::size_t Target> struct int_alignment<Target, false>{ typedef typename long_alignment<Target, boost::alignment_of<long>::value >= Target>::type type; };
+
+template <std::size_t Target, bool check> struct short_alignment{ typedef short type; };
+template <std::size_t Target> struct short_alignment<Target, false>{ typedef typename int_alignment<Target, boost::alignment_of<int>::value >= Target>::type type; };
+
+template <std::size_t Target, bool check> struct char_alignment{ typedef char type; };
+template <std::size_t Target> struct char_alignment<Target, false>{ typedef typename short_alignment<Target, boost::alignment_of<short>::value >= Target>::type type; };
+
+}
+
+template <std::size_t Align>
+struct type_with_alignment
+{
+   typedef typename boost::detail::char_alignment<Align, boost::alignment_of<char>::value >= Align>::type type;
+};
+
+
+namespace tt_align_ns {
+struct __attribute__((__aligned__(2))) a2 {};
+struct __attribute__((__aligned__(4))) a4 {};
+struct __attribute__((__aligned__(8))) a8 {};
+struct __attribute__((__aligned__(16))) a16 {};
+struct __attribute__((__aligned__(32))) a32 {};
+struct __attribute__((__aligned__(64))) a64 {};
+struct __attribute__((__aligned__(128))) a128 {};
+}
+
+template<> struct type_with_alignment<1> { public: typedef char type; };
+template<> struct type_with_alignment<2> { public: typedef tt_align_ns::a2 type; };
+template<> struct type_with_alignment<4> { public: typedef tt_align_ns::a4 type; };
+template<> struct type_with_alignment<8> { public: typedef tt_align_ns::a8 type; };
+template<> struct type_with_alignment<16> { public: typedef tt_align_ns::a16 type; };
+template<> struct type_with_alignment<32> { public: typedef tt_align_ns::a32 type; };
+template<> struct type_with_alignment<64> { public: typedef tt_align_ns::a64 type; };
+template<> struct type_with_alignment<128> { public: typedef tt_align_ns::a128 type; };
+
+template<> struct is_pod< ::boost::tt_align_ns::a2> : public true_type{};
+template<> struct is_pod< ::boost::tt_align_ns::a4> : public true_type{};
+template<> struct is_pod< ::boost::tt_align_ns::a8> : public true_type{};
+template<> struct is_pod< ::boost::tt_align_ns::a16> : public true_type{};
+template<> struct is_pod< ::boost::tt_align_ns::a32> : public true_type{};
+template<> struct is_pod< ::boost::tt_align_ns::a64> : public true_type{};
+template<> struct is_pod< ::boost::tt_align_ns::a128> : public true_type{};
+}
+namespace boost {
+
+
+   template <class T> struct remove_const{ typedef T type; };
+   template <class T> struct remove_const<T const>{ typedef T type; };
+
+
+   template <class T, std::size_t N> struct remove_const<T const[N]>{ typedef T type[N]; };
+
+   template <class T> struct remove_const<T const[]>{ typedef T type[]; };
+
+
+
+}
+namespace boost {
+
+
+namespace detail{
+
+
+
+
+template <class T>
+struct remove_rvalue_ref
+{
+   typedef T type;
+};
+
+template <class T>
+struct remove_rvalue_ref<T&&>
+{
+   typedef T type;
+};
+
+
+}
+
+template <class T> struct remove_reference{ typedef typename boost::detail::remove_rvalue_ref<T>::type type; };
+template <class T> struct remove_reference<T&>{ typedef T type; };
+}
+namespace boost {
+
+
+
+
+   template <class T> struct is_array : public false_type {};
+
+   template <class T, std::size_t N> struct is_array<T[N]> : public true_type {};
+   template <class T, std::size_t N> struct is_array<T const[N]> : public true_type{};
+   template <class T, std::size_t N> struct is_array<T volatile[N]> : public true_type{};
+   template <class T, std::size_t N> struct is_array<T const volatile[N]> : public true_type{};
+
+   template <class T> struct is_array<T[]> : public true_type{};
+   template <class T> struct is_array<T const[]> : public true_type{};
+   template <class T> struct is_array<T const volatile[]> : public true_type{};
+   template <class T> struct is_array<T volatile[]> : public true_type{};
+
+
+
+
+
+}
+namespace boost {
+
+
+
+
+
+   template <class T> struct is_lvalue_reference : public false_type{};
+   template <class T> struct is_lvalue_reference<T&> : public true_type{};
+}
+namespace boost {
+
+template <class T> struct is_rvalue_reference : public false_type {};
+
+template <class T> struct is_rvalue_reference<T&&> : public true_type {};
+
+
+}
+
+namespace boost {
+
+template <class T> struct is_reference
+   : public
+   integral_constant<
+      bool,
+      ::boost::is_lvalue_reference<T>::value || ::boost::is_rvalue_reference<T>::value>
+{};
+
+}
+
+
+
+namespace boost {
+namespace type_traits {
+
+template <class R>
+struct is_function_ptr_helper
+{
+    static const bool value = false;
+};
+
+
+
+
+template <class R >
+struct is_function_ptr_helper<R (*)()> { static const bool value = true; };
+template <class R >
+struct is_function_ptr_helper<R (*)( ...)> { static const bool value = true; };
+template <class R , class T0>
+struct is_function_ptr_helper<R (*)( T0)> { static const bool value = true; };
+template <class R , class T0>
+struct is_function_ptr_helper<R (*)( T0 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1>
+struct is_function_ptr_helper<R (*)( T0 , T1)> { static const bool value = true; };
+template <class R , class T0 , class T1>
+struct is_function_ptr_helper<R (*)( T0 , T1 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 ...)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23 , class T24>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 , T24)> { static const bool value = true; };
+template <class R , class T0 , class T1 , class T2 , class T3 , class T4 , class T5 , class T6 , class T7 , class T8 , class T9 , class T10 , class T11 , class T12 , class T13 , class T14 , class T15 , class T16 , class T17 , class T18 , class T19 , class T20 , class T21 , class T22 , class T23 , class T24>
+struct is_function_ptr_helper<R (*)( T0 , T1 , T2 , T3 , T4 , T5 , T6 , T7 , T8 , T9 , T10 , T11 , T12 , T13 , T14 , T15 , T16 , T17 , T18 , T19 , T20 , T21 , T22 , T23 , T24 ...)> { static const bool value = true; };
+}
+}
+namespace boost {
+
+
+
+namespace detail {
+
+
+template<bool is_ref = true>
+struct is_function_chooser
+{
+   template< typename T > struct result_
+      : public false_type {};
+};
+
+template <>
+struct is_function_chooser<false>
+{
+    template< typename T > struct result_
+        : public ::boost::type_traits::is_function_ptr_helper<T*> {};
+};
+
+template <typename T>
+struct is_function_impl
+    : public is_function_chooser< ::boost::is_reference<T>::value >
+        ::template result_<T>
+{
+};
+}
+
+
+
+
+
+
+template <class T> struct is_function : integral_constant<bool, ::boost::detail::is_function_impl<T>::value> {};
+
+template <class T> struct is_function<T&&> : public false_type {};
+
+
+}
+namespace boost {
+
+template <class T> struct remove_extent{ typedef T type; };
+
+
+template <typename T, std::size_t N> struct remove_extent<T[N]> { typedef T type; };
+template <typename T, std::size_t N> struct remove_extent<T const[N]> { typedef T const type; };
+template <typename T, std::size_t N> struct remove_extent<T volatile [N]> { typedef T volatile type; };
+template <typename T, std::size_t N> struct remove_extent<T const volatile [N]> { typedef T const volatile type; };
+
+template <typename T> struct remove_extent<T[]> { typedef T type; };
+template <typename T> struct remove_extent<T const[]> { typedef T const type; };
+template <typename T> struct remove_extent<T volatile[]> { typedef T volatile type; };
+template <typename T> struct remove_extent<T const volatile[]> { typedef T const volatile type; };
+
+
+
+}
+
+namespace boost
+{
+
+template <class T> struct remove_bounds : public remove_extent<T> {};
+
+}
+namespace boost {
+template <typename T>
+struct add_pointer
+{
+    typedef typename remove_reference<T>::type no_ref_type;
+    typedef no_ref_type* type;
+};
+
+
+
+}
+
+
+
+namespace boost
+{
+
+   namespace detail
+   {
+
+      template <class T, bool Array, bool Function> struct decay_imp { typedef typename remove_cv<T>::type type; };
+      template <class T> struct decay_imp<T, true, false> { typedef typename remove_bounds<T>::type* type; };
+      template <class T> struct decay_imp<T, false, true> { typedef T* type; };
+
+   }
+
+    template< class T >
+    struct decay
+    {
+    private:
+        typedef typename remove_reference<T>::type Ty;
+    public:
+       typedef typename boost::detail::decay_imp<Ty, boost::is_array<Ty>::value, boost::is_function<Ty>::value>::type type;
+    };
+
+}
+namespace boost {
+
+
+   template <class T, class U> struct is_same : public false_type {};
+   template <class T> struct is_same<T,T> : public true_type {};
+
+
+
+
+
+
+
+}
+
+namespace boost {
+
+namespace detail {
+template <typename B, typename D>
+struct is_base_and_derived_impl
+{
+    typedef typename remove_cv<B>::type ncvB;
+    typedef typename remove_cv<D>::type ncvD;
+
+    static const bool value = ((__is_base_of(B,D) && !is_same<B,D>::value) && ! ::boost::is_same<ncvB,ncvD>::value);
+};
+
+}
+
+template <class Base, class Derived> struct is_base_and_derived
+   : public integral_constant<bool, (::boost::detail::is_base_and_derived_impl<Base, Derived>::value)> {};
+
+template <class Base, class Derived> struct is_base_and_derived<Base&, Derived> : public false_type{};
+template <class Base, class Derived> struct is_base_and_derived<Base, Derived&> : public false_type{};
+template <class Base, class Derived> struct is_base_and_derived<Base&, Derived&> : public false_type{};
+
+
+
+
+
+}
+
+namespace boost {
+
+namespace detail {
+template <typename T>
+struct is_class_impl
+{
+    static const bool value = __is_class(T);
+};
+
+
+}
+
+template <class T> struct is_class : public integral_constant<bool, ::boost::detail::is_class_impl<T>::value> {};
+
+
+
+
+
+
+}
+
+namespace boost {
+
+   namespace detail{
+      template <class B, class D>
+      struct is_base_of_imp
+      {
+          typedef typename remove_cv<B>::type ncvB;
+          typedef typename remove_cv<D>::type ncvD;
+          static const bool value = ( (::boost::detail::is_base_and_derived_impl<ncvB,ncvD>::value) || (::boost::is_same<ncvB,ncvD>::value && ::boost::is_class<ncvB>::value))
+
+                                                                                    ;
+      };
+   }
+
+   template <class Base, class Derived> struct is_base_of
+      : public integral_constant<bool, (::boost::detail::is_base_of_imp<Base, Derived>::value)> {};
+
+   template <class Base, class Derived> struct is_base_of<Base, Derived&> : false_type{};
+   template <class Base, class Derived> struct is_base_of<Base&, Derived&> : false_type{};
+   template <class Base, class Derived> struct is_base_of<Base&, Derived> : false_type{};
+
+}
+namespace boost {
+
+namespace type_traits_detail {
+
+    template <typename T, bool b>
+    struct add_rvalue_reference_helper
+    { typedef T type; };
+
+
+    template <typename T>
+    struct add_rvalue_reference_helper<T, true>
+    {
+        typedef T&& type;
+    };
+
+
+    template <typename T>
+    struct add_rvalue_reference_imp
+    {
+       typedef typename boost::type_traits_detail::add_rvalue_reference_helper
+                  <T, (is_void<T>::value == false && is_reference<T>::value == false) >::type type;
+    };
+
+}
+
+template <class T> struct add_rvalue_reference
+{
+   typedef typename boost::type_traits_detail::add_rvalue_reference_imp<T>::type type;
+};
+
+}
+namespace boost {
+
+    template <typename T>
+    typename add_rvalue_reference<T>::type declval() noexcept;
+
+}
+
+namespace boost{
+
+   namespace detail{
+
+      struct is_destructible_imp
+      {
+         template<typename T, typename = decltype(boost::declval<T&>().~T())>
+         static boost::type_traits::yes_type test(int);
+         template<typename>
+         static boost::type_traits::no_type test(...);
+      };
+
+   }
+
+   template <class T> struct is_destructible : public integral_constant<bool, sizeof(detail::is_destructible_imp::test<T>(0)) == sizeof(boost::type_traits::yes_type)>{};
+   template <> struct is_destructible<void> : public false_type{};
+   template <> struct is_destructible<void const> : public false_type{};
+   template <> struct is_destructible<void volatile> : public false_type{};
+   template <> struct is_destructible<void const volatile> : public false_type{};
+   template <class T> struct is_destructible<T&> : public is_destructible<T>{};
+
+   template <class T> struct is_destructible<T&&> : public is_destructible<T>{};
+
+   template <class T, std::size_t N> struct is_destructible<T[N]> : public is_destructible<T>{};
+   template <class T> struct is_destructible<T[]> : public is_destructible<T>{};
+
+}
+
+
+
+
+namespace boost{
+
+   namespace detail{
+
+      struct is_constructible_imp
+      {
+         template<typename T, typename ...TheArgs, typename = decltype(T(boost::declval<TheArgs>()...))>
+         static boost::type_traits::yes_type test(int);
+         template<typename, typename...>
+         static boost::type_traits::no_type test(...);
+
+         template<typename T, typename Arg, typename = decltype(::new T(boost::declval<Arg>()))>
+         static boost::type_traits::yes_type test1(int);
+         template<typename, typename>
+         static boost::type_traits::no_type test1(...);
+
+         template <typename T>
+         static boost::type_traits::yes_type ref_test(T);
+         template <typename T>
+         static boost::type_traits::no_type ref_test(...);
+      };
+
+   }
+
+   template <class T, class ...Args> struct is_constructible : public integral_constant<bool, sizeof(detail::is_constructible_imp::test<T, Args...>(0)) == sizeof(boost::type_traits::yes_type)>{};
+   template <class T, class Arg> struct is_constructible<T, Arg> : public integral_constant<bool, is_destructible<T>::value && sizeof(detail::is_constructible_imp::test1<T, Arg>(0)) == sizeof(boost::type_traits::yes_type)>{};
+   template <class Ref, class Arg> struct is_constructible<Ref&, Arg> : public integral_constant<bool, sizeof(detail::is_constructible_imp::ref_test<Ref&>(boost::declval<Arg>())) == sizeof(boost::type_traits::yes_type)>{};
+   template <class Ref, class Arg> struct is_constructible<Ref&&, Arg> : public integral_constant<bool, sizeof(detail::is_constructible_imp::ref_test<Ref&&>(boost::declval<Arg>())) == sizeof(boost::type_traits::yes_type)>{};
+
+   template <> struct is_constructible<void> : public false_type{};
+   template <> struct is_constructible<void const> : public false_type{};
+   template <> struct is_constructible<void const volatile> : public false_type{};
+   template <> struct is_constructible<void volatile> : public false_type{};
+
+   template <class T> struct is_constructible<T> : public is_default_constructible<T>{};
+}
+
+namespace boost{
+
+   template <class T, class U = T> struct is_assignable;
+
+}
+
+
+
+
+
+
+namespace boost{
+
+   namespace detail{
+
+      struct is_assignable_imp
+      {
+         template<typename T, typename U, typename = decltype(boost::declval<T>() = boost::declval<U>())>
+         static boost::type_traits::yes_type test(int);
+
+         template<typename, typename>
+         static boost::type_traits::no_type test(...);
+      };
+
+   }
+
+   template <class T, class U> struct is_assignable : public integral_constant<bool, sizeof(detail::is_assignable_imp::test<T, U>(0)) == sizeof(boost::type_traits::yes_type)>{};
+   template <class T, std::size_t N, class U> struct is_assignable<T[N], U> : public is_assignable<T, U>{};
+   template <class T, std::size_t N, class U> struct is_assignable<T(&)[N], U> : public is_assignable<T&, U>{};
+   template <class T, class U> struct is_assignable<T[], U> : public is_assignable<T, U>{};
+   template <class T, class U> struct is_assignable<T(&)[], U> : public is_assignable<T&, U>{};
+   template <class U> struct is_assignable<void, U> : public integral_constant<bool, false>{};
+   template <class U> struct is_assignable<void const, U> : public integral_constant<bool, false>{};
+   template <class U> struct is_assignable<void volatile, U> : public integral_constant<bool, false>{};
+   template <class U> struct is_assignable<void const volatile, U> : public integral_constant<bool, false>{};
+}
+namespace boost {
+   template <class T>
+   struct is_volatile : public false_type {};
+   template <class T> struct is_volatile<T volatile> : public true_type{};
+   template <class T, std::size_t N> struct is_volatile<T volatile[N]> : public true_type{};
+   template <class T> struct is_volatile<T volatile[]> : public true_type{};
+
+
+
+}
+namespace boost{
+
+template <typename T>
+struct has_trivial_move_assign : public integral_constant<bool,
+
+   (__is_trivially_assignable(T&, T&&) && is_assignable<T&, T&&>::value && !::boost::is_volatile<T>::value)
+
+
+
+   > {};
+
+template <> struct has_trivial_move_assign<void> : public false_type{};
+
+template <> struct has_trivial_move_assign<void const> : public false_type{};
+template <> struct has_trivial_move_assign<void const volatile> : public false_type{};
+template <> struct has_trivial_move_assign<void volatile> : public false_type{};
+
+template <class T> struct has_trivial_move_assign<T&> : public false_type{};
+
+template <class T> struct has_trivial_move_assign<T&&> : public false_type{};
+
+
+template <class T, std::size_t N> struct has_trivial_move_assign<T[N]> : public false_type{};
+template <class T> struct has_trivial_move_assign<T[]> : public false_type{};
+
+}
+namespace boost {
+   template <class T>
+   struct is_const : public false_type {};
+   template <class T> struct is_const<T const> : public true_type{};
+   template <class T, std::size_t N> struct is_const<T const[N]> : public true_type{};
+   template <class T> struct is_const<T const[]> : public true_type{};
+
+
+
+}
+namespace boost {
+   template <class T>
+   struct has_nothrow_assign : public integral_constant < bool,
+      ((__has_nothrow_assign(T) ) && !is_volatile<T>::value && !is_const<T>::value && is_assignable<T&, const T&>::value)
+
+   > {};
+
+template <class T, std::size_t N> struct has_nothrow_assign <T[N]> : public has_nothrow_assign<T> {};
+template <> struct has_nothrow_assign<void> : public false_type{};
+template <class T> struct has_nothrow_assign<T volatile> : public false_type{};
+template <class T> struct has_nothrow_assign<T&> : public false_type{};
+
+template <class T> struct has_nothrow_assign<T&&> : public false_type{};
+
+
+template <> struct has_nothrow_assign<void const> : public false_type{};
+template <> struct has_nothrow_assign<void const volatile> : public false_type{};
+template <> struct has_nothrow_assign<void volatile> : public false_type{};
+
+
+}
+
+
+
+
+namespace boost {
+namespace detail{
+
+template <class T, class Enable = void>
+struct false_or_cpp11_noexcept_move_assignable: public ::boost::false_type {};
+
+template <class T>
+struct false_or_cpp11_noexcept_move_assignable <
+        T,
+        typename ::boost::enable_if_c<sizeof(T) && noexcept((::boost::declval<T&>() = ::boost::declval<T>()))>::type
+    > : public ::boost::integral_constant<bool, noexcept((::boost::declval<T&>() = ::boost::declval<T>()))>
+{};
+
+}
+
+template <class T>
+struct is_nothrow_move_assignable : public integral_constant<bool, ::boost::detail::false_or_cpp11_noexcept_move_assignable<T>::value>{};
+
+template <class T> struct is_nothrow_move_assignable<T const> : public ::boost::false_type {};
+template <class T> struct is_nothrow_move_assignable<T const volatile> : public ::boost::false_type{};
+template <class T> struct is_nothrow_move_assignable<T volatile> : public ::boost::false_type{};
+template <class T> struct is_nothrow_move_assignable<T&> : public ::boost::false_type{};
+
+template <class T> struct is_nothrow_move_assignable<T&&> : public ::boost::false_type{};
+template <> struct is_nothrow_move_assignable<void> : public false_type{};
+
+template <> struct is_nothrow_move_assignable<void const> : public false_type{};
+template <> struct is_nothrow_move_assignable<void const volatile> : public false_type{};
+template <> struct is_nothrow_move_assignable<void volatile> : public false_type{};
+
+
+}
+namespace boost{ namespace detail{
+
+template <class T, class Enable = void>
+struct false_or_cpp11_noexcept_move_constructible: public ::boost::false_type {};
+
+template <class T>
+struct false_or_cpp11_noexcept_move_constructible <
+        T,
+        typename ::boost::enable_if_c<sizeof(T) && noexcept((T(::boost::declval<T>())))>::type
+    > : public ::boost::integral_constant<bool, noexcept((T(::boost::declval<T>())))>
+{};
+
+}
+
+template <class T> struct is_nothrow_move_constructible
+   : public integral_constant<bool, ::boost::detail::false_or_cpp11_noexcept_move_constructible<T>::value>{};
+
+template <class T> struct is_nothrow_move_constructible<volatile T> : public ::boost::false_type {};
+template <class T> struct is_nothrow_move_constructible<const volatile T> : public ::boost::false_type{};
+template <class T, std::size_t N> struct is_nothrow_move_constructible<T[N]> : public ::boost::false_type{};
+template <class T> struct is_nothrow_move_constructible<T[]> : public ::boost::false_type{};
+template <> struct is_nothrow_move_constructible<void> : false_type{};
+
+template <> struct is_nothrow_move_constructible<void const> : false_type{};
+template <> struct is_nothrow_move_constructible<void volatile> : false_type{};
+template <> struct is_nothrow_move_constructible<void const volatile> : false_type{};
+
+
+template <class T> struct is_nothrow_move_constructible<T&> : public ::boost::true_type{};
+
+template <class T> struct is_nothrow_move_constructible<T&&> : public ::boost::true_type{};
+
+
+}
+
+
+         
+
+
+         
+         
+
+
+
+         
+
+
+   namespace boost {
+
+
+
+
+   template<class T>
+   struct has_move_emulation_enabled
+   {
+      static const bool value = false;
+   };
+
+   template<class T>
+   struct has_move_emulation_disabled
+   {
+      static const bool value = true;
+   };
+
+   }
+   namespace boost {
+   namespace move_detail {
+
+   template< class T> struct forward_type { typedef T type; };
+
+   }}
+
+
+
+         
+
+
+         
+
+
+
+
+namespace boost {
+namespace move_detail {
+
+
+
+
+template<bool C, typename T1, typename T2>
+struct if_c
+{
+   typedef T1 type;
+};
+
+template<typename T1, typename T2>
+struct if_c<false,T1,T2>
+{
+   typedef T2 type;
+};
+
+
+
+
+template<typename T1, typename T2, typename T3>
+struct if_ : if_c<0 != T1::value, T2, T3>
+{};
+
+
+
+
+template <bool B, class T = void>
+struct enable_if_c
+{
+   typedef T type;
+};
+
+template <class T>
+struct enable_if_c<false, T> {};
+
+
+
+
+template <class Cond, class T = void>
+struct enable_if : enable_if_c<Cond::value, T> {};
+
+
+
+
+template <bool B, class T = void>
+struct disable_if_c
+   : enable_if_c<!B, T>
+{};
+
+
+
+
+template <class Cond, class T = void>
+struct disable_if : enable_if_c<!Cond::value, T> {};
+
+
+
+
+template<class T, T v>
+struct integral_constant
+{
+   static const T value = v;
+   typedef T value_type;
+   typedef integral_constant<T, v> type;
+
+     operator T() const { return value; }
+   T operator()() const { return value; }
+};
+
+typedef integral_constant<bool, true > true_type;
+typedef integral_constant<bool, false > false_type;
+
+
+
+
+
+template<class T, class U>
+struct is_same
+{
+   static const bool value = false;
+};
+
+template<class T>
+struct is_same<T, T>
+{
+   static const bool value = true;
+};
+
+
+
+
+template <class T, class U, class R = void>
+struct enable_if_same : enable_if<is_same<T, U>, R> {};
+
+
+
+
+template <class T, class U, class R = void>
+struct disable_if_same : disable_if<is_same<T, U>, R> {};
+
+}
+}
+
+
+
+
+namespace boost {
+
+
+template <class T> class rv;
+
+namespace move_detail {
+
+
+
+
+template<class T, class U>
+struct is_different
+{
+   static const bool value = !is_same<T, U>::value;
+};
+
+
+
+
+template<class F, class Param>
+struct apply
+{
+   typedef typename F::template apply<Param>::type type;
+};
+
+
+
+
+
+template< bool C_ >
+struct bool_ : integral_constant<bool, C_>
+{
+     operator bool() const { return C_; }
+   bool operator()() const { return C_; }
+};
+
+typedef bool_<true> true_;
+typedef bool_<false> false_;
+
+
+
+
+struct nat{};
+
+
+
+
+typedef char yes_type;
+
+struct no_type
+{
+   char _[2];
+};
+
+
+
+
+template <class T> struct natify{};
+
+
+
+
+template<class T>
+struct remove_reference
+{
+   typedef T type;
+};
+
+template<class T>
+struct remove_reference<T&>
+{
+   typedef T type;
+};
+
+
+
+template<class T>
+struct remove_reference<T&&>
+{
+   typedef T type;
+};
+template< class T > struct remove_pointer { typedef T type; };
+template< class T > struct remove_pointer<T*> { typedef T type; };
+template< class T > struct remove_pointer<T* const> { typedef T type; };
+template< class T > struct remove_pointer<T* volatile> { typedef T type; };
+template< class T > struct remove_pointer<T* const volatile> { typedef T type; };
+
+
+
+
+template< class T >
+struct add_pointer
+{
+   typedef typename remove_reference<T>::type* type;
+};
+
+
+
+
+template<class T>
+struct add_const
+{
+   typedef const T type;
+};
+
+template<class T>
+struct add_const<T&>
+{
+   typedef const T& type;
+};
+
+
+
+template<class T>
+struct add_const<T&&>
+{
+   typedef T&& type;
+};
+
+
+
+
+
+
+template<class T>
+struct add_lvalue_reference
+{ typedef T& type; };
+
+template<class T> struct add_lvalue_reference<T&> { typedef T& type; };
+template<> struct add_lvalue_reference<void> { typedef void type; };
+template<> struct add_lvalue_reference<const void> { typedef const void type; };
+template<> struct add_lvalue_reference<volatile void> { typedef volatile void type; };
+template<> struct add_lvalue_reference<const volatile void>{ typedef const volatile void type; };
+
+template<class T>
+struct add_const_lvalue_reference
+{
+   typedef typename remove_reference<T>::type t_unreferenced;
+   typedef typename add_const<t_unreferenced>::type t_unreferenced_const;
+   typedef typename add_lvalue_reference
+      <t_unreferenced_const>::type type;
+};
+
+
+
+
+template<class T>
+struct is_lvalue_reference
+{
+    static const bool value = false;
+};
+
+template<class T>
+struct is_lvalue_reference<T&>
+{
+    static const bool value = true;
+};
+
+
+
+
+
+template <class T>
+struct identity
+{
+   typedef T type;
+   typedef typename add_const_lvalue_reference<T>::type reference;
+   reference operator()(reference t)
+   { return t; }
+};
+
+
+
+
+template<class T>
+struct is_class_or_union
+{
+   struct twochar { char dummy[2]; };
+   template <class U>
+   static char is_class_or_union_tester(void(U::*)(void));
+   template <class U>
+   static twochar is_class_or_union_tester(...);
+   static const bool value = sizeof(is_class_or_union_tester<T>(0)) == sizeof(char);
+};
+
+
+
+
+template<class T>
+struct addr_impl_ref
+{
+   T & v_;
+   inline addr_impl_ref( T & v ): v_( v ) {}
+   inline operator T& () const { return v_; }
+
+   private:
+   addr_impl_ref & operator=(const addr_impl_ref &);
+};
+
+template<class T>
+struct addressof_impl
+{
+   inline static T * f( T & v, long )
+   {
+      return reinterpret_cast<T*>(
+         &const_cast<char&>(reinterpret_cast<const volatile char &>(v)));
+   }
+
+   inline static T * f( T * v, int )
+   { return v; }
+};
+
+template<class T>
+inline T * addressof( T & v )
+{
+   return ::boost::move_detail::addressof_impl<T>::f
+      ( ::boost::move_detail::addr_impl_ref<T>( v ), 0 );
+}
+
+
+
+
+template <class T>
+struct has_pointer_type
+{
+   struct two { char c[2]; };
+   template <class U> static two test(...);
+   template <class U> static char test(typename U::pointer* = 0);
+   static const bool value = sizeof(test<T>(0)) == 1;
+};
+template <class T, class U>
+class is_convertible
+{
+   typedef typename add_lvalue_reference<T>::type t_reference;
+   typedef char true_t;
+   class false_t { char dummy[2]; };
+   static false_t dispatch(...);
+   static true_t dispatch(U);
+   static t_reference trigger();
+   public:
+   static const bool value = sizeof(dispatch(trigger())) == sizeof(true_t);
+};
+
+
+
+template <class T, class U, bool IsSame = is_same<T, U>::value>
+struct is_same_or_convertible
+   : is_convertible<T, U>
+{};
+
+template <class T, class U>
+struct is_same_or_convertible<T, U, true>
+{
+   static const bool value = true;
+};
+
+template<
+      bool C
+    , typename F1
+    , typename F2
+    >
+struct eval_if_c
+    : if_c<C,F1,F2>::type
+{};
+
+template<
+      typename C
+    , typename T1
+    , typename T2
+    >
+struct eval_if
+    : if_<C,T1,T2>::type
+{};
+
+
+
+
+
+
+template<class T, class U, class R = void>
+struct enable_if_convertible
+   : enable_if< is_convertible<T, U>, R>
+{};
+
+template<class T, class U, class R = void>
+struct disable_if_convertible
+   : disable_if< is_convertible<T, U>, R>
+{};
+
+template<class T, class U, class R = void>
+struct enable_if_same_or_convertible
+   : enable_if< is_same_or_convertible<T, U>, R>
+{};
+
+template<class T, class U, class R = void>
+struct disable_if_same_or_convertible
+   : disable_if< is_same_or_convertible<T, U>, R>
+{};
+
+
+
+
+
+
+template<bool, class B = true_, class C = true_, class D = true_>
+struct and_impl
+   : and_impl<B::value, C, D>
+{};
+
+template<>
+struct and_impl<true, true_, true_, true_>
+{
+   static const bool value = true;
+};
+
+template<class B, class C, class D>
+struct and_impl<false, B, C, D>
+{
+   static const bool value = false;
+};
+
+template<class A, class B, class C = true_, class D = true_>
+struct and_
+   : and_impl<A::value, B, C, D>
+{};
+
+
+
+
+
+
+template<bool, class B = false_, class C = false_, class D = false_>
+struct or_impl
+   : or_impl<B::value, C, D>
+{};
+
+template<>
+struct or_impl<false, false_, false_, false_>
+{
+   static const bool value = false;
+};
+
+template<class B, class C, class D>
+struct or_impl<true, B, C, D>
+{
+   static const bool value = true;
+};
+
+template<class A, class B, class C = false_, class D = false_>
+struct or_
+   : or_impl<A::value, B, C, D>
+{};
+
+
+
+
+
+
+template<class T>
+struct not_
+{
+   static const bool value = !T::value;
+};
+
+
+
+
+
+
+
+template<class R, class A, class B, class C = true_, class D = true_>
+struct enable_if_and
+   : enable_if_c< and_<A, B, C, D>::value, R>
+{};
+
+template<class R, class A, class B, class C = true_, class D = true_>
+struct disable_if_and
+   : disable_if_c< and_<A, B, C, D>::value, R>
+{};
+
+template<class R, class A, class B, class C = false_, class D = false_>
+struct enable_if_or
+   : enable_if_c< or_<A, B, C, D>::value, R>
+{};
+
+template<class R, class A, class B, class C = false_, class D = false_>
+struct disable_if_or
+   : disable_if_c< or_<A, B, C, D>::value, R>
+{};
+
+
+
+
+
+
+template<class T>
+struct has_move_emulation_enabled_impl
+   : is_convertible< T, ::boost::rv<T>& >
+{};
+
+template<class T>
+struct has_move_emulation_enabled_impl<T&>
+{ static const bool value = false; };
+
+template<class T>
+struct has_move_emulation_enabled_impl< ::boost::rv<T> >
+{ static const bool value = false; };
+
+
+
+
+
+
+
+template <class T>
+struct is_rv_impl
+{ static const bool value = false; };
+
+template <class T>
+struct is_rv_impl< rv<T> >
+{ static const bool value = true; };
+
+template <class T>
+struct is_rv_impl< const rv<T> >
+{ static const bool value = true; };
+
+
+
+template< class T >
+struct is_rvalue_reference
+{ static const bool value = false; };
+
+
+
+template< class T >
+struct is_rvalue_reference< T&& >
+{ static const bool value = true; };
+template< class T >
+struct add_rvalue_reference
+{ typedef T&& type; };
+template< class T > struct remove_rvalue_reference { typedef T type; };
+
+
+   template< class T > struct remove_rvalue_reference< T&& > { typedef T type; };
+}
+}
+
+      namespace boost {
+
+
+
+
+
+
+
+      template<class T>
+      struct enable_move_utility_emulation
+      {
+         static const bool value = false;
+      };
+         template <class T>
+         inline typename ::boost::move_detail::remove_reference<T>::type && move(T&& t) noexcept
+         { return static_cast<typename ::boost::move_detail::remove_reference<T>::type &&>(t); }
+         template <class T>
+         inline T&& forward(typename ::boost::move_detail::remove_reference<T>::type& t) noexcept
+         { return static_cast<T&&>(t); }
+
+         template <class T>
+         inline T&& forward(typename ::boost::move_detail::remove_reference<T>::type&& t) noexcept
+         {
+
+            static_assert(!boost::move_detail::is_lvalue_reference<T>::value, "!boost::move_detail::is_lvalue_reference<T>::value");
+            return static_cast<T&&>(t);
+         }
+         template <class T>
+         inline T&& move_if_not_lvalue_reference(typename ::boost::move_detail::remove_reference<T>::type& t) noexcept
+         { return static_cast<T&&>(t); }
+
+         template <class T>
+         inline T&& move_if_not_lvalue_reference(typename ::boost::move_detail::remove_reference<T>::type&& t) noexcept
+         {
+
+            static_assert(!boost::move_detail::is_lvalue_reference<T>::value, "!boost::move_detail::is_lvalue_reference<T>::value");
+            return static_cast<T&&>(t);
+         }
+
+
+
+      }
+
+
+
+
+
+
+
+namespace boost{
+namespace move_detail{
+
+template <typename T>
+typename boost::move_detail::add_rvalue_reference<T>::type declval();
+
+}
+}
+
+
+
+
+         
+
+
+
+
+
+
+
+         
+
+
+
+
+
+
+
+namespace boost {
+namespace move_detail {
+
+
+
+
+template<class T>
+struct is_reference
+{ static const bool value = false; };
+
+template<class T>
+struct is_reference<T&>
+{ static const bool value = true; };
+
+
+template<class T>
+struct is_reference<T&&>
+{ static const bool value = true; };
+
+
+
+
+
+template<class T>
+struct is_pointer
+{ static const bool value = false; };
+
+template<class T>
+struct is_pointer<T*>
+{ static const bool value = true; };
+
+
+
+
+template<class T>
+struct is_const
+{ static const bool value = false; };
+
+template<class T>
+struct is_const<const T>
+{ static const bool value = true; };
+
+
+
+
+template <typename T> struct unvoid_ref : add_lvalue_reference<T>{};
+template <> struct unvoid_ref<void> { typedef unvoid_ref & type; };
+template <> struct unvoid_ref<const void> { typedef unvoid_ref & type; };
+template <> struct unvoid_ref<volatile void> { typedef unvoid_ref & type; };
+template <> struct unvoid_ref<const volatile void> { typedef unvoid_ref & type; };
+
+template <typename T>
+struct add_reference : add_lvalue_reference<T>
+{};
+
+
+
+
+template <class T>
+struct add_const_reference
+{ typedef const T &type; };
+
+template <class T>
+struct add_const_reference<T&>
+{ typedef T& type; };
+
+
+
+
+template<class T, bool Add>
+struct add_const_if_c
+   : if_c<Add, typename add_const<T>::type, T>
+{};
+
+
+
+
+template<class T>
+struct remove_const
+{ typedef T type; };
+
+template<class T>
+struct remove_const< const T>
+{ typedef T type; };
+
+
+
+
+template<typename T> struct remove_cv { typedef T type; };
+template<typename T> struct remove_cv<const T> { typedef T type; };
+template<typename T> struct remove_cv<const volatile T> { typedef T type; };
+template<typename T> struct remove_cv<volatile T> { typedef T type; };
+
+
+
+
+template <class T>
+struct make_unsigned_impl { typedef T type; };
+template <> struct make_unsigned_impl<signed char> { typedef unsigned char type; };
+template <> struct make_unsigned_impl<signed short> { typedef unsigned short type; };
+template <> struct make_unsigned_impl<signed int> { typedef unsigned int type; };
+template <> struct make_unsigned_impl<signed long> { typedef unsigned long type; };
+
+template <> struct make_unsigned_impl< ::boost::long_long_type > { typedef ::boost::ulong_long_type type; };
+
+
+template <class T>
+struct make_unsigned
+   : make_unsigned_impl<typename remove_cv<T>::type>
+{};
+
+
+
+
+template<class T> struct is_floating_point_cv { static const bool value = false; };
+template<> struct is_floating_point_cv<float> { static const bool value = true; };
+template<> struct is_floating_point_cv<double> { static const bool value = true; };
+template<> struct is_floating_point_cv<long double> { static const bool value = true; };
+
+template<class T>
+struct is_floating_point
+   : is_floating_point_cv<typename remove_cv<T>::type>
+{};
+
+
+
+
+template<class T> struct is_integral_cv { static const bool value = false; };
+template<> struct is_integral_cv< bool>{ static const bool value = true; };
+template<> struct is_integral_cv< char>{ static const bool value = true; };
+template<> struct is_integral_cv< unsigned char>{ static const bool value = true; };
+template<> struct is_integral_cv< signed char>{ static const bool value = true; };
+
+template<> struct is_integral_cv< char16_t>{ static const bool value = true; };
+
+
+template<> struct is_integral_cv< char32_t>{ static const bool value = true; };
+
+
+template<> struct is_integral_cv< wchar_t>{ static const bool value = true; };
+
+template<> struct is_integral_cv< short>{ static const bool value = true; };
+template<> struct is_integral_cv< unsigned short>{ static const bool value = true; };
+template<> struct is_integral_cv< int>{ static const bool value = true; };
+template<> struct is_integral_cv< unsigned int>{ static const bool value = true; };
+template<> struct is_integral_cv< long>{ static const bool value = true; };
+template<> struct is_integral_cv< unsigned long>{ static const bool value = true; };
+
+template<> struct is_integral_cv< ::boost:: long_long_type>{ static const bool value = true; };
+template<> struct is_integral_cv< ::boost::ulong_long_type>{ static const bool value = true; };
+
+
+template<class T>
+struct is_integral
+   : public is_integral_cv<typename remove_cv<T>::type>
+{};
+
+
+
+
+template <class T>
+struct remove_all_extents
+{ typedef T type;};
+
+template <class T>
+struct remove_all_extents<T[]>
+{ typedef typename remove_all_extents<T>::type type; };
+
+template <class T, std::size_t N>
+struct remove_all_extents<T[N]>
+{ typedef typename remove_all_extents<T>::type type;};
+
+
+
+
+template<class T>
+struct is_scalar
+{ static const bool value = is_integral<T>::value || is_floating_point<T>::value; };
+
+
+
+
+template<class T>
+struct is_void_cv
+{ static const bool value = false; };
+
+template<>
+struct is_void_cv<void>
+{ static const bool value = true; };
+
+template<class T>
+struct is_void
+   : is_void_cv<typename remove_cv<T>::type>
+{};
+
+
+
+
+template<class T>
+struct is_array
+{ static const bool value = false; };
+
+template<class T>
+struct is_array<T[]>
+{ static const bool value = true; };
+
+template<class T, std::size_t N>
+struct is_array<T[N]>
+{ static const bool value = true; };
+
+
+
+
+template <class T> struct is_member_pointer_cv { static const bool value = false; };
+template <class T, class U>struct is_member_pointer_cv<T U::*> { static const bool value = true; };
+
+template <class T>
+struct is_member_pointer
+    : is_member_pointer_cv<typename remove_cv<T>::type>
+{};
+
+
+
+
+template <class T>
+struct is_nullptr_t_cv
+{ static const bool value = false; };
+
+
+template <>
+struct is_nullptr_t_cv
+
+   <decltype(nullptr)>
+
+
+
+{ static const bool value = true; };
+
+
+template <class T>
+struct is_nullptr_t
+   : is_nullptr_t_cv<typename remove_cv<T>::type>
+{};
+template <class T>
+struct is_reference_convertible_to_pointer
+{
+   struct twochar { char dummy[2]; };
+   template <class U> static char test(U*);
+   template <class U> static twochar test(...);
+   static T& source();
+   static const bool value = sizeof(char) == sizeof(test<T>(source()));
+};
+
+
+
+
+
+template < class T
+         , bool Filter = is_class_or_union<T>::value ||
+                         is_void<T>::value ||
+                         is_reference<T>::value ||
+                         is_nullptr_t<T>::value >
+struct is_function_impl
+{ static const bool value = is_reference_convertible_to_pointer<T>::value; };
+
+template <class T>
+struct is_function_impl<T, true>
+{ static const bool value = false; };
+
+template <class T>
+struct is_function
+   : is_function_impl<T>
+{};
+
+
+
+
+template<class T>
+struct is_union_noextents_cv
+{ static const bool value = __is_union(T); };
+
+template<class T>
+struct is_union
+   : is_union_noextents_cv<typename remove_cv<typename remove_all_extents<T>::type>::type>
+{};
+
+
+
+
+template <class T>
+struct is_class
+{
+   static const bool value = is_class_or_union<T>::value && ! is_union<T>::value;
+};
+
+
+
+
+
+template <class T>
+struct is_arithmetic
+{
+   static const bool value = is_floating_point<T>::value ||
+                             is_integral<T>::value;
+};
+
+
+
+
+template <class T>
+struct is_member_function_pointer_cv
+{
+   static const bool value = false;
+};
+
+template <class T, class C>
+struct is_member_function_pointer_cv<T C::*>
+   : is_function<T>
+{};
+
+template <class T>
+struct is_member_function_pointer
+    : is_member_function_pointer_cv<typename remove_cv<T>::type>
+{};
+template <class T>
+struct is_enum
+{ static const bool value = __is_enum(T); };
+
+
+
+
+template<class T>
+struct is_pod_noextents_cv
+{ static const bool value = (::boost::move_detail::is_scalar<T>::value || ::boost::move_detail::is_void<T>::value || __is_pod(T)); };
+
+template<class T>
+struct is_pod
+   : is_pod_noextents_cv<typename remove_cv<typename remove_all_extents<T>::type>::type>
+{};
+template <class T>
+struct is_empty
+{ static const bool value = __is_empty(T); };
+
+
+template<class T>
+struct has_boost_move_no_copy_constructor_or_assign_type
+{
+   template <class U>
+   static yes_type test(typename U::boost_move_no_copy_constructor_or_assign*);
+
+   template <class U>
+   static no_type test(...);
+
+   static const bool value = sizeof(test<T>(0)) == sizeof(yes_type);
+};
+template<class T>
+struct is_copy_constructible
+{
+      template<class U> static typename add_reference<U>::type source();
+      static no_type test(...);
+
+
+
+
+         template <class U>
+         static yes_type test(U&, decltype(U(source<U>()))* = 0);
+
+      static const bool value = sizeof(test(source<T>())) == sizeof(yes_type);
+
+
+
+};
+template <class T>
+struct is_copy_assignable
+{
+   typedef char yes_type;
+   struct no_type { char dummy[2]; };
+
+   template <class U> static typename add_reference<U>::type source();
+   template <class U> static decltype(source<U&>() = source<const U&>(), yes_type() ) test(int);
+   template <class> static no_type test(...);
+
+   static const bool value = sizeof(test<T>(0)) == sizeof(yes_type);
+
+
+
+};
+
+
+
+
+template<class T>
+struct is_trivially_destructible
+{ static const bool value = (__has_trivial_destructor(T) ); };
+
+
+
+
+template<class T>
+struct is_trivially_default_constructible
+{ static const bool value = ((__has_trivial_constructor(T) )); };
+
+
+
+
+template<class T>
+struct is_trivially_copy_constructible
+{
+
+
+   static const bool value = ::boost::move_detail::is_pod<T>::value || (::boost::move_detail::is_copy_constructible<T>::value && ((__has_trivial_copy(T) )));
+};
+
+
+
+
+template<class T>
+struct is_trivially_move_constructible
+{ static const bool value = ::boost::move_detail::is_pod<T>::value; };
+
+
+
+
+template<class T>
+struct is_trivially_copy_assignable
+{
+
+
+   static const bool value = ::boost::move_detail::is_pod<T>::value || ( ::boost::move_detail::is_copy_assignable<T>::value && ((__has_trivial_assign(T) ) ));
+};
+
+
+
+
+template<class T>
+struct is_trivially_move_assignable
+{ static const bool value = ::boost::move_detail::is_pod<T>::value; };
+
+
+
+
+template<class T>
+struct is_nothrow_default_constructible
+   : is_pod<T>
+{ static const bool value = (__has_nothrow_constructor(T) ); };
+
+
+
+
+template<class T>
+struct is_nothrow_copy_constructible
+{ static const bool value = ((__has_nothrow_copy(T) )); };
+
+
+
+
+template<class T>
+struct is_nothrow_move_constructible
+{ static const bool value = ::boost::move_detail::is_pod<T>::value; };
+
+
+
+
+template<class T>
+struct is_nothrow_copy_assignable
+{ static const bool value = ((__has_nothrow_assign(T) )); };
+
+
+
+
+template<class T>
+struct is_nothrow_move_assignable
+{ static const bool value = ::boost::move_detail::is_pod<T>::value; };
+
+
+
+
+template<class T>
+struct is_nothrow_swappable
+{
+   static const bool value = is_empty<T>::value || is_pod<T>::value;
+};
+
+
+
+
+template <typename T>
+struct alignment_of_hack
+{
+   T t1;
+   char c;
+   T t2;
+   alignment_of_hack();
+};
+
+template <unsigned A, unsigned S>
+struct alignment_logic
+{ static const std::size_t value = A < S ? A : S; };
+
+template< typename T >
+struct alignment_of_impl
+{ static const std::size_t value = __alignof__(T); };
+
+
+template< typename T >
+struct alignment_of
+   : alignment_of_impl<T>
+{};
+
+class alignment_dummy;
+typedef void (*function_ptr)();
+typedef int (alignment_dummy::*member_ptr);
+typedef int (alignment_dummy::*member_function_ptr)();
+struct alignment_struct
+{ long double dummy[4]; };
+
+
+
+
+
+union max_align
+{
+   char char_;
+   short short_;
+   int int_;
+   long long_;
+
+   ::boost::long_long_type long_long_;
+
+   float float_;
+   double double_;
+   void * void_ptr_;
+   long double long_double_[4];
+   alignment_dummy *unknown_class_ptr_;
+   function_ptr function_ptr_;
+   member_function_ptr member_function_ptr_;
+   alignment_struct alignment_struct_;
+};
+
+typedef union max_align max_align_t;
+
+
+
+
+
+
+
+template<std::size_t Len, std::size_t Align>
+struct aligned_storage_impl;
+template<std::size_t Len>struct alignas(0x1) aligned_storage_impl<Len, 0x1>{ char dummy[Len]; typedef aligned_storage_impl<Len, 0x1> type;};
+template<std::size_t Len>struct alignas(0x2) aligned_storage_impl<Len, 0x2>{ char dummy[Len]; typedef aligned_storage_impl<Len, 0x2> type;};
+template<std::size_t Len>struct alignas(0x4) aligned_storage_impl<Len, 0x4>{ char dummy[Len]; typedef aligned_storage_impl<Len, 0x4> type;};
+template<std::size_t Len>struct alignas(0x8) aligned_storage_impl<Len, 0x8>{ char dummy[Len]; typedef aligned_storage_impl<Len, 0x8> type;};
+template<std::size_t Len>struct alignas(0x10) aligned_storage_impl<Len, 0x10>{ char dummy[Len]; typedef aligned_storage_impl<Len, 0x10> type;};
+template<std::size_t Len>struct alignas(0x20) aligned_storage_impl<Len, 0x20>{ char dummy[Len]; typedef aligned_storage_impl<Len, 0x20> type;};
+template<std::size_t Len>struct alignas(0x40) aligned_storage_impl<Len, 0x40>{ char dummy[Len]; typedef aligned_storage_impl<Len, 0x40> type;};
+template<std::size_t Len>struct alignas(0x80) aligned_storage_impl<Len, 0x80>{ char dummy[Len]; typedef aligned_storage_impl<Len, 0x80> type;};
+template<std::size_t Len>struct alignas(0x100) aligned_storage_impl<Len, 0x100>{ char dummy[Len]; typedef aligned_storage_impl<Len, 0x100> type;};
+template<std::size_t Len>struct alignas(0x200) aligned_storage_impl<Len, 0x200>{ char dummy[Len]; typedef aligned_storage_impl<Len, 0x200> type;};
+template<std::size_t Len>struct alignas(0x400) aligned_storage_impl<Len, 0x400>{ char dummy[Len]; typedef aligned_storage_impl<Len, 0x400> type;};
+template<std::size_t Len>struct alignas(0x800) aligned_storage_impl<Len, 0x800>{ char dummy[Len]; typedef aligned_storage_impl<Len, 0x800> type;};
+template<std::size_t Len>struct alignas(0x1000) aligned_storage_impl<Len, 0x1000>{ char dummy[Len]; typedef aligned_storage_impl<Len, 0x1000> type;};
+template<std::size_t Len, std::size_t Align = alignment_of<max_align_t>::value>
+struct aligned_storage
+{
+
+   static_assert(Align > 0, "Align > 0");
+
+
+   typedef typename aligned_storage_impl<Len ? Len : 1, Align>::type type;
+   static const std::size_t value = alignment_of<type>::value;
+   static_assert(value >= Align, "value >= Align");
+   static_assert((value % Align) == 0, "(value % Align) == 0");
+
+
+
+   private:
+   aligned_storage();
+};
+
+}
+}
+
+
+namespace boost {
+template <class T>
+struct has_trivial_destructor_after_move
+   : ::boost::move_detail::is_trivially_destructible<T>
+{};
+
+
+
+
+
+template <class T>
+struct has_nothrow_move
+{
+   static const bool value = boost::move_detail::is_nothrow_move_constructible<T>::value &&
+                             boost::move_detail::is_nothrow_move_assignable<T>::value;
+};
+
+namespace move_detail {
+
+template <class T>
+struct is_nothrow_move_constructible_or_uncopyable
+{
+
+
+   static const bool value = is_nothrow_move_constructible<T>::value ||
+                             has_nothrow_move<T>::value ||
+                            !is_copy_constructible<T>::value;
+};
+
+}
+}
+
+      namespace boost {
+         template <class T>
+         inline typename ::boost::move_detail::enable_if_c
+            < ::boost::move_detail::is_nothrow_move_constructible_or_uncopyable<T>::value, T&&>::type
+               move_if_noexcept(T& x) noexcept
+         { return ::boost::move(x); }
+
+         template <class T>
+         inline typename ::boost::move_detail::enable_if_c
+            < !::boost::move_detail::is_nothrow_move_constructible_or_uncopyable<T>::value, const T&>::type
+               move_if_noexcept(T& x) noexcept
+         { return x; }
+
+
+
+      }
+
+
+
+
+
+namespace boost {
+struct none_t
+{
+  struct init_tag{};
+  explicit none_t(init_tag){}
+};
+
+
+
+}
+
+
+
+
+
+namespace boost {
+const none_t none ((none_t::init_tag()));
+
+
+
+}
+       
+
+
+
+
+
+
+
+       
+
+
+
+
+
+
+       
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  template<typename _Tp, std::size_t _Nm>
+    struct __array_traits
+    {
+      typedef _Tp _Type[_Nm];
+      typedef __is_swappable<_Tp> _Is_swappable;
+      typedef __is_nothrow_swappable<_Tp> _Is_nothrow_swappable;
+
+      static constexpr _Tp&
+      _S_ref(const _Type& __t, std::size_t __n) noexcept
+      { return const_cast<_Tp&>(__t[__n]); }
+
+      static constexpr _Tp*
+      _S_ptr(const _Type& __t) noexcept
+      { return const_cast<_Tp*>(__t); }
+    };
+
+ template<typename _Tp>
+   struct __array_traits<_Tp, 0>
+   {
+     struct _Type { };
+     typedef true_type _Is_swappable;
+     typedef true_type _Is_nothrow_swappable;
+
+     static constexpr _Tp&
+     _S_ref(const _Type&, std::size_t) noexcept
+     { return *static_cast<_Tp*>(nullptr); }
+
+     static constexpr _Tp*
+     _S_ptr(const _Type&) noexcept
+     { return nullptr; }
+   };
+  template<typename _Tp, std::size_t _Nm>
+    struct array
+    {
+      typedef _Tp value_type;
+      typedef value_type* pointer;
+      typedef const value_type* const_pointer;
+      typedef value_type& reference;
+      typedef const value_type& const_reference;
+      typedef value_type* iterator;
+      typedef const value_type* const_iterator;
+      typedef std::size_t size_type;
+      typedef std::ptrdiff_t difference_type;
+      typedef std::reverse_iterator<iterator> reverse_iterator;
+      typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+
+
+      typedef std::__array_traits<_Tp, _Nm> _AT_Type;
+      typename _AT_Type::_Type _M_elems;
+
+
+
+
+      void
+      fill(const value_type& __u)
+      { std::fill_n(begin(), size(), __u); }
+
+      void
+      swap(array& __other)
+      noexcept(_AT_Type::_Is_nothrow_swappable::value)
+      { std::swap_ranges(begin(), end(), __other.begin()); }
+
+
+      iterator
+      begin() noexcept
+      { return iterator(data()); }
+
+      const_iterator
+      begin() const noexcept
+      { return const_iterator(data()); }
+
+      iterator
+      end() noexcept
+      { return iterator(data() + _Nm); }
+
+      const_iterator
+      end() const noexcept
+      { return const_iterator(data() + _Nm); }
+
+      reverse_iterator
+      rbegin() noexcept
+      { return reverse_iterator(end()); }
+
+      const_reverse_iterator
+      rbegin() const noexcept
+      { return const_reverse_iterator(end()); }
+
+      reverse_iterator
+      rend() noexcept
+      { return reverse_iterator(begin()); }
+
+      const_reverse_iterator
+      rend() const noexcept
+      { return const_reverse_iterator(begin()); }
+
+      const_iterator
+      cbegin() const noexcept
+      { return const_iterator(data()); }
+
+      const_iterator
+      cend() const noexcept
+      { return const_iterator(data() + _Nm); }
+
+      const_reverse_iterator
+      crbegin() const noexcept
+      { return const_reverse_iterator(end()); }
+
+      const_reverse_iterator
+      crend() const noexcept
+      { return const_reverse_iterator(begin()); }
+
+
+      constexpr size_type
+      size() const noexcept { return _Nm; }
+
+      constexpr size_type
+      max_size() const noexcept { return _Nm; }
+
+      constexpr bool
+      empty() const noexcept { return size() == 0; }
+
+
+      reference
+      operator[](size_type __n) noexcept
+      { return _AT_Type::_S_ref(_M_elems, __n); }
+
+      constexpr const_reference
+      operator[](size_type __n) const noexcept
+      { return _AT_Type::_S_ref(_M_elems, __n); }
+
+      reference
+      at(size_type __n)
+      {
+ if (__n >= _Nm)
+   std::__throw_out_of_range_fmt(("array::at: __n (which is %zu) " ">= _Nm (which is %zu)")
+                                 ,
+     __n, _Nm);
+ return _AT_Type::_S_ref(_M_elems, __n);
+      }
+
+      constexpr const_reference
+      at(size_type __n) const
+      {
+
+
+ return __n < _Nm ? _AT_Type::_S_ref(_M_elems, __n)
+   : (std::__throw_out_of_range_fmt(("array::at: __n (which is %zu) " ">= _Nm (which is %zu)")
+                                    ,
+        __n, _Nm),
+      _AT_Type::_S_ref(_M_elems, 0));
+      }
+
+      reference
+      front() noexcept
+      { return *begin(); }
+
+      constexpr const_reference
+      front() const noexcept
+      { return _AT_Type::_S_ref(_M_elems, 0); }
+
+      reference
+      back() noexcept
+      { return _Nm ? *(end() - 1) : *end(); }
+
+      constexpr const_reference
+      back() const noexcept
+      {
+ return _Nm ? _AT_Type::_S_ref(_M_elems, _Nm - 1)
+             : _AT_Type::_S_ref(_M_elems, 0);
+      }
+
+      pointer
+      data() noexcept
+      { return _AT_Type::_S_ptr(_M_elems); }
+
+      const_pointer
+      data() const noexcept
+      { return _AT_Type::_S_ptr(_M_elems); }
+    };
+  template<typename _Tp, std::size_t _Nm>
+    inline bool
+    operator==(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
+    { return std::equal(__one.begin(), __one.end(), __two.begin()); }
+
+  template<typename _Tp, std::size_t _Nm>
+    inline bool
+    operator!=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
+    { return !(__one == __two); }
+
+  template<typename _Tp, std::size_t _Nm>
+    inline bool
+    operator<(const array<_Tp, _Nm>& __a, const array<_Tp, _Nm>& __b)
+    {
+      return std::lexicographical_compare(__a.begin(), __a.end(),
+       __b.begin(), __b.end());
+    }
+
+  template<typename _Tp, std::size_t _Nm>
+    inline bool
+    operator>(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
+    { return __two < __one; }
+
+  template<typename _Tp, std::size_t _Nm>
+    inline bool
+    operator<=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
+    { return !(__one > __two); }
+
+  template<typename _Tp, std::size_t _Nm>
+    inline bool
+    operator>=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
+    { return !(__one < __two); }
+
+
+  template<typename _Tp, std::size_t _Nm>
+    inline
+
+
+    typename enable_if<
+      std::__array_traits<_Tp, _Nm>::_Is_swappable::value
+    >::type
+
+
+
+    swap(array<_Tp, _Nm>& __one, array<_Tp, _Nm>& __two)
+    noexcept(noexcept(__one.swap(__two)))
+    { __one.swap(__two); }
+
+
+  template<typename _Tp, std::size_t _Nm>
+    typename enable_if<
+      !std::__array_traits<_Tp, _Nm>::_Is_swappable::value>::type
+    swap(array<_Tp, _Nm>&, array<_Tp, _Nm>&) = delete;
+
+
+  template<std::size_t _Int, typename _Tp, std::size_t _Nm>
+    constexpr _Tp&
+    get(array<_Tp, _Nm>& __arr) noexcept
+    {
+      static_assert(_Int < _Nm, "array index is within bounds");
+      return std::__array_traits<_Tp, _Nm>::
+ _S_ref(__arr._M_elems, _Int);
+    }
+
+  template<std::size_t _Int, typename _Tp, std::size_t _Nm>
+    constexpr _Tp&&
+    get(array<_Tp, _Nm>&& __arr) noexcept
+    {
+      static_assert(_Int < _Nm, "array index is within bounds");
+      return std::move(std::get<_Int>(__arr));
+    }
+
+  template<std::size_t _Int, typename _Tp, std::size_t _Nm>
+    constexpr const _Tp&
+    get(const array<_Tp, _Nm>& __arr) noexcept
+    {
+      static_assert(_Int < _Nm, "array index is within bounds");
+      return std::__array_traits<_Tp, _Nm>::
+ _S_ref(__arr._M_elems, _Int);
+    }
+
+  template<std::size_t _Int, typename _Tp, std::size_t _Nm>
+    constexpr const _Tp&&
+    get(const array<_Tp, _Nm>&& __arr) noexcept
+    {
+      static_assert(_Int < _Nm, "array index is within bounds");
+      return std::move(std::get<_Int>(__arr));
+    }
+
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+  template<typename _Tp>
+    struct tuple_size;
+
+
+  template<typename _Tp, std::size_t _Nm>
+    struct tuple_size<std::array<_Tp, _Nm>>
+    : public integral_constant<std::size_t, _Nm> { };
+
+
+  template<std::size_t _Int, typename _Tp>
+    struct tuple_element;
+
+
+  template<std::size_t _Int, typename _Tp, std::size_t _Nm>
+    struct tuple_element<_Int, std::array<_Tp, _Nm>>
+    {
+      static_assert(_Int < _Nm, "index is out of bounds");
+      typedef _Tp type;
+    };
+
+  template<typename _Tp, std::size_t _Nm>
+    struct __is_tuple_like_impl<std::array<_Tp, _Nm>> : true_type
+    { };
+
+
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+  struct __erased_type { };
+
+  template<typename _Alloc, typename _Tp>
+    using __is_erased_or_convertible
+      = __or_<is_same<_Tp, __erased_type>, is_convertible<_Alloc, _Tp>>;
+
+
+  struct allocator_arg_t { explicit allocator_arg_t() = default; };
+
+  constexpr allocator_arg_t allocator_arg =
+    allocator_arg_t();
+
+  template<typename _Tp, typename _Alloc, typename = __void_t<>>
+    struct __uses_allocator_helper
+    : false_type { };
+
+  template<typename _Tp, typename _Alloc>
+    struct __uses_allocator_helper<_Tp, _Alloc,
+       __void_t<typename _Tp::allocator_type>>
+    : __is_erased_or_convertible<_Alloc, typename _Tp::allocator_type>::type
+    { };
+
+
+  template<typename _Tp, typename _Alloc>
+    struct uses_allocator
+    : __uses_allocator_helper<_Tp, _Alloc>::type
+    { };
+
+  struct __uses_alloc_base { };
+
+  struct __uses_alloc0 : __uses_alloc_base
+  {
+    struct _Sink { void operator=(const void*) { } } _M_a;
+  };
+
+  template<typename _Alloc>
+    struct __uses_alloc1 : __uses_alloc_base { const _Alloc* _M_a; };
+
+  template<typename _Alloc>
+    struct __uses_alloc2 : __uses_alloc_base { const _Alloc* _M_a; };
+
+  template<bool, typename _Tp, typename _Alloc, typename... _Args>
+    struct __uses_alloc;
+
+  template<typename _Tp, typename _Alloc, typename... _Args>
+    struct __uses_alloc<true, _Tp, _Alloc, _Args...>
+    : conditional<
+        is_constructible<_Tp, allocator_arg_t, _Alloc, _Args...>::value,
+        __uses_alloc1<_Alloc>,
+        __uses_alloc2<_Alloc>>::type
+    {
+      static_assert(__or_<
+   is_constructible<_Tp, allocator_arg_t, _Alloc, _Args...>,
+   is_constructible<_Tp, _Args..., _Alloc>>::value, "construction with"
+   " an allocator must be possible if uses_allocator is true");
+    };
+
+  template<typename _Tp, typename _Alloc, typename... _Args>
+    struct __uses_alloc<false, _Tp, _Alloc, _Args...>
+    : __uses_alloc0 { };
+
+  template<typename _Tp, typename _Alloc, typename... _Args>
+    using __uses_alloc_t =
+      __uses_alloc<uses_allocator<_Tp, _Alloc>::value, _Tp, _Alloc, _Args...>;
+
+  template<typename _Tp, typename _Alloc, typename... _Args>
+    inline __uses_alloc_t<_Tp, _Alloc, _Args...>
+    __use_alloc(const _Alloc& __a)
+    {
+      __uses_alloc_t<_Tp, _Alloc, _Args...> __ret;
+      __ret._M_a = std::__addressof(__a);
+      return __ret;
+    }
+
+  template<typename _Tp, typename _Alloc, typename... _Args>
+    void
+    __use_alloc(const _Alloc&&) = delete;
+
+
+
+
+
+
+
+  template<template<typename...> class _Predicate,
+    typename _Tp, typename _Alloc, typename... _Args>
+    struct __is_uses_allocator_predicate
+    : conditional<uses_allocator<_Tp, _Alloc>::value,
+      __or_<_Predicate<_Tp, allocator_arg_t, _Alloc, _Args...>,
+     _Predicate<_Tp, _Args..., _Alloc>>,
+      _Predicate<_Tp, _Args...>>::type { };
+
+  template<typename _Tp, typename _Alloc, typename... _Args>
+    struct __is_uses_allocator_constructible
+    : __is_uses_allocator_predicate<is_constructible, _Tp, _Alloc, _Args...>
+    { };
+
+
+  template<typename _Tp, typename _Alloc, typename... _Args>
+    constexpr bool __is_uses_allocator_constructible_v =
+      __is_uses_allocator_constructible<_Tp, _Alloc, _Args...>::value;
+
+
+  template<typename _Tp, typename _Alloc, typename... _Args>
+    struct __is_nothrow_uses_allocator_constructible
+    : __is_uses_allocator_predicate<is_nothrow_constructible,
+        _Tp, _Alloc, _Args...>
+    { };
+
+
+
+  template<typename _Tp, typename _Alloc, typename... _Args>
+    constexpr bool
+    __is_nothrow_uses_allocator_constructible_v =
+      __is_nothrow_uses_allocator_constructible<_Tp, _Alloc, _Args...>::value;
+
+
+  template<typename _Tp, typename... _Args>
+    void __uses_allocator_construct_impl(__uses_alloc0 __a, _Tp* __ptr,
+      _Args&&... __args)
+    { ::new ((void*)__ptr) _Tp(std::forward<_Args>(__args)...); }
+
+  template<typename _Tp, typename _Alloc, typename... _Args>
+    void __uses_allocator_construct_impl(__uses_alloc1<_Alloc> __a, _Tp* __ptr,
+      _Args&&... __args)
+    {
+      ::new ((void*)__ptr) _Tp(allocator_arg, *__a._M_a,
+          std::forward<_Args>(__args)...);
+    }
+
+  template<typename _Tp, typename _Alloc, typename... _Args>
+    void __uses_allocator_construct_impl(__uses_alloc2<_Alloc> __a, _Tp* __ptr,
+      _Args&&... __args)
+    { ::new ((void*)__ptr) _Tp(std::forward<_Args>(__args)..., *__a._M_a); }
+
+  template<typename _Tp, typename _Alloc, typename... _Args>
+    void __uses_allocator_construct(const _Alloc& __a, _Tp* __ptr,
+        _Args&&... __args)
+    {
+      __uses_allocator_construct_impl(__use_alloc<_Tp, _Alloc, _Args...>(__a),
+          __ptr, std::forward<_Args>(__args)...);
+    }
+
+
+}
+       
+
+
+
+
+
+
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _Tp, typename _Up = typename __inv_unwrap<_Tp>::type>
+    constexpr _Up&&
+    __invfwd(typename remove_reference<_Tp>::type& __t) noexcept
+    { return static_cast<_Up&&>(__t); }
+
+  template<typename _Res, typename _Fn, typename... _Args>
+    constexpr _Res
+    __invoke_impl(__invoke_other, _Fn&& __f, _Args&&... __args)
+    { return std::forward<_Fn>(__f)(std::forward<_Args>(__args)...); }
+
+  template<typename _Res, typename _MemFun, typename _Tp, typename... _Args>
+    constexpr _Res
+    __invoke_impl(__invoke_memfun_ref, _MemFun&& __f, _Tp&& __t,
+    _Args&&... __args)
+    { return (__invfwd<_Tp>(__t).*__f)(std::forward<_Args>(__args)...); }
+
+  template<typename _Res, typename _MemFun, typename _Tp, typename... _Args>
+    constexpr _Res
+    __invoke_impl(__invoke_memfun_deref, _MemFun&& __f, _Tp&& __t,
+    _Args&&... __args)
+    {
+      return ((*std::forward<_Tp>(__t)).*__f)(std::forward<_Args>(__args)...);
+    }
+
+  template<typename _Res, typename _MemPtr, typename _Tp>
+    constexpr _Res
+    __invoke_impl(__invoke_memobj_ref, _MemPtr&& __f, _Tp&& __t)
+    { return __invfwd<_Tp>(__t).*__f; }
+
+  template<typename _Res, typename _MemPtr, typename _Tp>
+    constexpr _Res
+    __invoke_impl(__invoke_memobj_deref, _MemPtr&& __f, _Tp&& __t)
+    { return (*std::forward<_Tp>(__t)).*__f; }
+
+
+  template<typename _Callable, typename... _Args>
+    constexpr typename __invoke_result<_Callable, _Args...>::type
+    __invoke(_Callable&& __fn, _Args&&... __args)
+    noexcept(__is_nothrow_invocable<_Callable, _Args...>::value)
+    {
+      using __result = __invoke_result<_Callable, _Args...>;
+      using __type = typename __result::type;
+      using __tag = typename __result::__invoke_type;
+      return std::__invoke_impl<__type>(__tag{}, std::forward<_Callable>(__fn),
+     std::forward<_Args>(__args)...);
+    }
+
+
+}
+
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+
+  template<typename... _Elements>
+    class tuple;
+
+  template<typename _Tp>
+    struct __is_empty_non_tuple : is_empty<_Tp> { };
+
+
+  template<typename _El0, typename... _El>
+    struct __is_empty_non_tuple<tuple<_El0, _El...>> : false_type { };
+
+
+  template<typename _Tp>
+    using __empty_not_final
+    = typename conditional<__is_final(_Tp), false_type,
+      __is_empty_non_tuple<_Tp>>::type;
+
+  template<std::size_t _Idx, typename _Head,
+    bool = __empty_not_final<_Head>::value>
+    struct _Head_base;
+
+  template<std::size_t _Idx, typename _Head>
+    struct _Head_base<_Idx, _Head, true>
+    : public _Head
+    {
+      constexpr _Head_base()
+      : _Head() { }
+
+      constexpr _Head_base(const _Head& __h)
+      : _Head(__h) { }
+
+      constexpr _Head_base(const _Head_base&) = default;
+      constexpr _Head_base(_Head_base&&) = default;
+
+      template<typename _UHead>
+        constexpr _Head_base(_UHead&& __h)
+ : _Head(std::forward<_UHead>(__h)) { }
+
+      _Head_base(allocator_arg_t, __uses_alloc0)
+      : _Head() { }
+
+      template<typename _Alloc>
+ _Head_base(allocator_arg_t, __uses_alloc1<_Alloc> __a)
+ : _Head(allocator_arg, *__a._M_a) { }
+
+      template<typename _Alloc>
+ _Head_base(allocator_arg_t, __uses_alloc2<_Alloc> __a)
+ : _Head(*__a._M_a) { }
+
+      template<typename _UHead>
+ _Head_base(__uses_alloc0, _UHead&& __uhead)
+ : _Head(std::forward<_UHead>(__uhead)) { }
+
+      template<typename _Alloc, typename _UHead>
+ _Head_base(__uses_alloc1<_Alloc> __a, _UHead&& __uhead)
+ : _Head(allocator_arg, *__a._M_a, std::forward<_UHead>(__uhead)) { }
+
+      template<typename _Alloc, typename _UHead>
+ _Head_base(__uses_alloc2<_Alloc> __a, _UHead&& __uhead)
+ : _Head(std::forward<_UHead>(__uhead), *__a._M_a) { }
+
+      static constexpr _Head&
+      _M_head(_Head_base& __b) noexcept { return __b; }
+
+      static constexpr const _Head&
+      _M_head(const _Head_base& __b) noexcept { return __b; }
+    };
+
+  template<std::size_t _Idx, typename _Head>
+    struct _Head_base<_Idx, _Head, false>
+    {
+      constexpr _Head_base()
+      : _M_head_impl() { }
+
+      constexpr _Head_base(const _Head& __h)
+      : _M_head_impl(__h) { }
+
+      constexpr _Head_base(const _Head_base&) = default;
+      constexpr _Head_base(_Head_base&&) = default;
+
+      template<typename _UHead>
+        constexpr _Head_base(_UHead&& __h)
+ : _M_head_impl(std::forward<_UHead>(__h)) { }
+
+      _Head_base(allocator_arg_t, __uses_alloc0)
+      : _M_head_impl() { }
+
+      template<typename _Alloc>
+ _Head_base(allocator_arg_t, __uses_alloc1<_Alloc> __a)
+ : _M_head_impl(allocator_arg, *__a._M_a) { }
+
+      template<typename _Alloc>
+ _Head_base(allocator_arg_t, __uses_alloc2<_Alloc> __a)
+ : _M_head_impl(*__a._M_a) { }
+
+      template<typename _UHead>
+ _Head_base(__uses_alloc0, _UHead&& __uhead)
+ : _M_head_impl(std::forward<_UHead>(__uhead)) { }
+
+      template<typename _Alloc, typename _UHead>
+ _Head_base(__uses_alloc1<_Alloc> __a, _UHead&& __uhead)
+ : _M_head_impl(allocator_arg, *__a._M_a, std::forward<_UHead>(__uhead))
+ { }
+
+      template<typename _Alloc, typename _UHead>
+ _Head_base(__uses_alloc2<_Alloc> __a, _UHead&& __uhead)
+ : _M_head_impl(std::forward<_UHead>(__uhead), *__a._M_a) { }
+
+      static constexpr _Head&
+      _M_head(_Head_base& __b) noexcept { return __b._M_head_impl; }
+
+      static constexpr const _Head&
+      _M_head(const _Head_base& __b) noexcept { return __b._M_head_impl; }
+
+      _Head _M_head_impl;
+    };
+  template<std::size_t _Idx, typename... _Elements>
+    struct _Tuple_impl;
+
+
+
+
+
+
+  template<std::size_t _Idx, typename _Head, typename... _Tail>
+    struct _Tuple_impl<_Idx, _Head, _Tail...>
+    : public _Tuple_impl<_Idx + 1, _Tail...>,
+      private _Head_base<_Idx, _Head>
+    {
+      template<std::size_t, typename...> friend class _Tuple_impl;
+
+      typedef _Tuple_impl<_Idx + 1, _Tail...> _Inherited;
+      typedef _Head_base<_Idx, _Head> _Base;
+
+      static constexpr _Head&
+      _M_head(_Tuple_impl& __t) noexcept { return _Base::_M_head(__t); }
+
+      static constexpr const _Head&
+      _M_head(const _Tuple_impl& __t) noexcept { return _Base::_M_head(__t); }
+
+      static constexpr _Inherited&
+      _M_tail(_Tuple_impl& __t) noexcept { return __t; }
+
+      static constexpr const _Inherited&
+      _M_tail(const _Tuple_impl& __t) noexcept { return __t; }
+
+      constexpr _Tuple_impl()
+      : _Inherited(), _Base() { }
+
+      explicit
+      constexpr _Tuple_impl(const _Head& __head, const _Tail&... __tail)
+      : _Inherited(__tail...), _Base(__head) { }
+
+      template<typename _UHead, typename... _UTail, typename = typename
+               enable_if<sizeof...(_Tail) == sizeof...(_UTail)>::type>
+        explicit
+        constexpr _Tuple_impl(_UHead&& __head, _UTail&&... __tail)
+ : _Inherited(std::forward<_UTail>(__tail)...),
+   _Base(std::forward<_UHead>(__head)) { }
+
+      constexpr _Tuple_impl(const _Tuple_impl&) = default;
+
+      constexpr
+      _Tuple_impl(_Tuple_impl&& __in)
+      noexcept(__and_<is_nothrow_move_constructible<_Head>,
+               is_nothrow_move_constructible<_Inherited>>::value)
+      : _Inherited(std::move(_M_tail(__in))),
+ _Base(std::forward<_Head>(_M_head(__in))) { }
+
+      template<typename... _UElements>
+        constexpr _Tuple_impl(const _Tuple_impl<_Idx, _UElements...>& __in)
+ : _Inherited(_Tuple_impl<_Idx, _UElements...>::_M_tail(__in)),
+   _Base(_Tuple_impl<_Idx, _UElements...>::_M_head(__in)) { }
+
+      template<typename _UHead, typename... _UTails>
+        constexpr _Tuple_impl(_Tuple_impl<_Idx, _UHead, _UTails...>&& __in)
+ : _Inherited(std::move
+       (_Tuple_impl<_Idx, _UHead, _UTails...>::_M_tail(__in))),
+   _Base(std::forward<_UHead>
+  (_Tuple_impl<_Idx, _UHead, _UTails...>::_M_head(__in))) { }
+
+      template<typename _Alloc>
+ _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a)
+ : _Inherited(__tag, __a),
+          _Base(__tag, __use_alloc<_Head>(__a)) { }
+
+      template<typename _Alloc>
+ _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+      const _Head& __head, const _Tail&... __tail)
+ : _Inherited(__tag, __a, __tail...),
+          _Base(__use_alloc<_Head, _Alloc, _Head>(__a), __head) { }
+
+      template<typename _Alloc, typename _UHead, typename... _UTail,
+               typename = typename enable_if<sizeof...(_Tail)
+          == sizeof...(_UTail)>::type>
+ _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+             _UHead&& __head, _UTail&&... __tail)
+ : _Inherited(__tag, __a, std::forward<_UTail>(__tail)...),
+          _Base(__use_alloc<_Head, _Alloc, _UHead>(__a),
+         std::forward<_UHead>(__head)) { }
+
+      template<typename _Alloc>
+        _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+             const _Tuple_impl& __in)
+ : _Inherited(__tag, __a, _M_tail(__in)),
+          _Base(__use_alloc<_Head, _Alloc, _Head>(__a), _M_head(__in)) { }
+
+      template<typename _Alloc>
+ _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+             _Tuple_impl&& __in)
+ : _Inherited(__tag, __a, std::move(_M_tail(__in))),
+   _Base(__use_alloc<_Head, _Alloc, _Head>(__a),
+         std::forward<_Head>(_M_head(__in))) { }
+
+      template<typename _Alloc, typename... _UElements>
+ _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+             const _Tuple_impl<_Idx, _UElements...>& __in)
+ : _Inherited(__tag, __a,
+       _Tuple_impl<_Idx, _UElements...>::_M_tail(__in)),
+   _Base(__use_alloc<_Head, _Alloc, _Head>(__a),
+  _Tuple_impl<_Idx, _UElements...>::_M_head(__in)) { }
+
+      template<typename _Alloc, typename _UHead, typename... _UTails>
+ _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+             _Tuple_impl<_Idx, _UHead, _UTails...>&& __in)
+ : _Inherited(__tag, __a, std::move
+       (_Tuple_impl<_Idx, _UHead, _UTails...>::_M_tail(__in))),
+   _Base(__use_alloc<_Head, _Alloc, _UHead>(__a),
+                std::forward<_UHead>
+  (_Tuple_impl<_Idx, _UHead, _UTails...>::_M_head(__in))) { }
+
+      _Tuple_impl&
+      operator=(const _Tuple_impl& __in)
+      {
+ _M_head(*this) = _M_head(__in);
+ _M_tail(*this) = _M_tail(__in);
+ return *this;
+      }
+
+      _Tuple_impl&
+      operator=(_Tuple_impl&& __in)
+      noexcept(__and_<is_nothrow_move_assignable<_Head>,
+               is_nothrow_move_assignable<_Inherited>>::value)
+      {
+ _M_head(*this) = std::forward<_Head>(_M_head(__in));
+ _M_tail(*this) = std::move(_M_tail(__in));
+ return *this;
+      }
+
+      template<typename... _UElements>
+        _Tuple_impl&
+        operator=(const _Tuple_impl<_Idx, _UElements...>& __in)
+        {
+   _M_head(*this) = _Tuple_impl<_Idx, _UElements...>::_M_head(__in);
+   _M_tail(*this) = _Tuple_impl<_Idx, _UElements...>::_M_tail(__in);
+   return *this;
+ }
+
+      template<typename _UHead, typename... _UTails>
+        _Tuple_impl&
+        operator=(_Tuple_impl<_Idx, _UHead, _UTails...>&& __in)
+        {
+   _M_head(*this) = std::forward<_UHead>
+     (_Tuple_impl<_Idx, _UHead, _UTails...>::_M_head(__in));
+   _M_tail(*this) = std::move
+     (_Tuple_impl<_Idx, _UHead, _UTails...>::_M_tail(__in));
+   return *this;
+ }
+
+    protected:
+      void
+      _M_swap(_Tuple_impl& __in)
+      noexcept(__is_nothrow_swappable<_Head>::value
+               && noexcept(_M_tail(__in)._M_swap(_M_tail(__in))))
+      {
+ using std::swap;
+ swap(_M_head(*this), _M_head(__in));
+ _Inherited::_M_swap(_M_tail(__in));
+      }
+    };
+
+
+  template<std::size_t _Idx, typename _Head>
+    struct _Tuple_impl<_Idx, _Head>
+    : private _Head_base<_Idx, _Head>
+    {
+      template<std::size_t, typename...> friend class _Tuple_impl;
+
+      typedef _Head_base<_Idx, _Head> _Base;
+
+      static constexpr _Head&
+      _M_head(_Tuple_impl& __t) noexcept { return _Base::_M_head(__t); }
+
+      static constexpr const _Head&
+      _M_head(const _Tuple_impl& __t) noexcept { return _Base::_M_head(__t); }
+
+      constexpr _Tuple_impl()
+      : _Base() { }
+
+      explicit
+      constexpr _Tuple_impl(const _Head& __head)
+      : _Base(__head) { }
+
+      template<typename _UHead>
+        explicit
+        constexpr _Tuple_impl(_UHead&& __head)
+ : _Base(std::forward<_UHead>(__head)) { }
+
+      constexpr _Tuple_impl(const _Tuple_impl&) = default;
+
+      constexpr
+      _Tuple_impl(_Tuple_impl&& __in)
+      noexcept(is_nothrow_move_constructible<_Head>::value)
+      : _Base(std::forward<_Head>(_M_head(__in))) { }
+
+      template<typename _UHead>
+        constexpr _Tuple_impl(const _Tuple_impl<_Idx, _UHead>& __in)
+ : _Base(_Tuple_impl<_Idx, _UHead>::_M_head(__in)) { }
+
+      template<typename _UHead>
+        constexpr _Tuple_impl(_Tuple_impl<_Idx, _UHead>&& __in)
+ : _Base(std::forward<_UHead>(_Tuple_impl<_Idx, _UHead>::_M_head(__in)))
+ { }
+
+      template<typename _Alloc>
+ _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a)
+ : _Base(__tag, __use_alloc<_Head>(__a)) { }
+
+      template<typename _Alloc>
+ _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+      const _Head& __head)
+ : _Base(__use_alloc<_Head, _Alloc, _Head>(__a), __head) { }
+
+      template<typename _Alloc, typename _UHead>
+ _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+             _UHead&& __head)
+ : _Base(__use_alloc<_Head, _Alloc, _UHead>(__a),
+         std::forward<_UHead>(__head)) { }
+
+      template<typename _Alloc>
+        _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+             const _Tuple_impl& __in)
+ : _Base(__use_alloc<_Head, _Alloc, _Head>(__a), _M_head(__in)) { }
+
+      template<typename _Alloc>
+ _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+             _Tuple_impl&& __in)
+ : _Base(__use_alloc<_Head, _Alloc, _Head>(__a),
+         std::forward<_Head>(_M_head(__in))) { }
+
+      template<typename _Alloc, typename _UHead>
+ _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+             const _Tuple_impl<_Idx, _UHead>& __in)
+ : _Base(__use_alloc<_Head, _Alloc, _Head>(__a),
+  _Tuple_impl<_Idx, _UHead>::_M_head(__in)) { }
+
+      template<typename _Alloc, typename _UHead>
+ _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+             _Tuple_impl<_Idx, _UHead>&& __in)
+ : _Base(__use_alloc<_Head, _Alloc, _UHead>(__a),
+                std::forward<_UHead>(_Tuple_impl<_Idx, _UHead>::_M_head(__in)))
+ { }
+
+      _Tuple_impl&
+      operator=(const _Tuple_impl& __in)
+      {
+ _M_head(*this) = _M_head(__in);
+ return *this;
+      }
+
+      _Tuple_impl&
+      operator=(_Tuple_impl&& __in)
+      noexcept(is_nothrow_move_assignable<_Head>::value)
+      {
+ _M_head(*this) = std::forward<_Head>(_M_head(__in));
+ return *this;
+      }
+
+      template<typename _UHead>
+        _Tuple_impl&
+        operator=(const _Tuple_impl<_Idx, _UHead>& __in)
+        {
+   _M_head(*this) = _Tuple_impl<_Idx, _UHead>::_M_head(__in);
+   return *this;
+ }
+
+      template<typename _UHead>
+        _Tuple_impl&
+        operator=(_Tuple_impl<_Idx, _UHead>&& __in)
+        {
+   _M_head(*this)
+     = std::forward<_UHead>(_Tuple_impl<_Idx, _UHead>::_M_head(__in));
+   return *this;
+ }
+
+    protected:
+      void
+      _M_swap(_Tuple_impl& __in)
+      noexcept(__is_nothrow_swappable<_Head>::value)
+      {
+ using std::swap;
+ swap(_M_head(*this), _M_head(__in));
+      }
+    };
+
+
+
+  template<bool, typename... _Elements>
+  struct _TC
+  {
+    template<typename... _UElements>
+    static constexpr bool _ConstructibleTuple()
+    {
+      return __and_<is_constructible<_Elements, const _UElements&>...>::value;
+    }
+
+    template<typename... _UElements>
+    static constexpr bool _ImplicitlyConvertibleTuple()
+    {
+      return __and_<is_convertible<const _UElements&, _Elements>...>::value;
+    }
+
+    template<typename... _UElements>
+    static constexpr bool _MoveConstructibleTuple()
+    {
+      return __and_<is_constructible<_Elements, _UElements&&>...>::value;
+    }
+
+    template<typename... _UElements>
+    static constexpr bool _ImplicitlyMoveConvertibleTuple()
+    {
+      return __and_<is_convertible<_UElements&&, _Elements>...>::value;
+    }
+
+    template<typename _SrcTuple>
+    static constexpr bool _NonNestedTuple()
+    {
+      return __and_<__not_<is_same<tuple<_Elements...>,
+                                   typename remove_cv<
+                                     typename remove_reference<_SrcTuple>::type
+                                   >::type>>,
+                     __not_<is_convertible<_SrcTuple, _Elements...>>,
+                     __not_<is_constructible<_Elements..., _SrcTuple>>
+              >::value;
+    }
+    template<typename... _UElements>
+    static constexpr bool _NotSameTuple()
+    {
+      return __not_<is_same<tuple<_Elements...>,
+        typename remove_const<
+          typename remove_reference<_UElements...>::type
+          >::type>>::value;
+    }
+  };
+
+  template<typename... _Elements>
+  struct _TC<false, _Elements...>
+  {
+    template<typename... _UElements>
+    static constexpr bool _ConstructibleTuple()
+    {
+      return false;
+    }
+
+    template<typename... _UElements>
+    static constexpr bool _ImplicitlyConvertibleTuple()
+    {
+      return false;
+    }
+
+    template<typename... _UElements>
+    static constexpr bool _MoveConstructibleTuple()
+    {
+      return false;
+    }
+
+    template<typename... _UElements>
+    static constexpr bool _ImplicitlyMoveConvertibleTuple()
+    {
+      return false;
+    }
+
+    template<typename... _UElements>
+    static constexpr bool _NonNestedTuple()
+    {
+      return true;
+    }
+    template<typename... _UElements>
+    static constexpr bool _NotSameTuple()
+    {
+      return true;
+    }
+  };
+
+
+  template<typename... _Elements>
+    class tuple : public _Tuple_impl<0, _Elements...>
+    {
+      typedef _Tuple_impl<0, _Elements...> _Inherited;
+
+
+
+      template<typename _Dummy>
+      struct _TC2
+      {
+        static constexpr bool _DefaultConstructibleTuple()
+        {
+          return __and_<is_default_constructible<_Elements>...>::value;
+        }
+        static constexpr bool _ImplicitlyDefaultConstructibleTuple()
+        {
+          return __and_<__is_implicitly_default_constructible<_Elements>...>
+            ::value;
+        }
+      };
+
+    public:
+      template<typename _Dummy = void,
+               typename enable_if<_TC2<_Dummy>::
+                                    _ImplicitlyDefaultConstructibleTuple(),
+                                  bool>::type = true>
+      constexpr tuple()
+      : _Inherited() { }
+
+      template<typename _Dummy = void,
+               typename enable_if<_TC2<_Dummy>::
+                                    _DefaultConstructibleTuple()
+                                  &&
+                                  !_TC2<_Dummy>::
+                                    _ImplicitlyDefaultConstructibleTuple(),
+                                  bool>::type = false>
+      explicit constexpr tuple()
+      : _Inherited() { }
+
+
+
+      template<typename _Dummy> using _TCC =
+        _TC<is_same<_Dummy, void>::value,
+            _Elements...>;
+
+      template<typename _Dummy = void,
+               typename enable_if<
+                 _TCC<_Dummy>::template
+                   _ConstructibleTuple<_Elements...>()
+                 && _TCC<_Dummy>::template
+                   _ImplicitlyConvertibleTuple<_Elements...>()
+                 && (sizeof...(_Elements) >= 1),
+               bool>::type=true>
+        constexpr tuple(const _Elements&... __elements)
+      : _Inherited(__elements...) { }
+
+      template<typename _Dummy = void,
+               typename enable_if<
+                 _TCC<_Dummy>::template
+                   _ConstructibleTuple<_Elements...>()
+                 && !_TCC<_Dummy>::template
+                   _ImplicitlyConvertibleTuple<_Elements...>()
+                 && (sizeof...(_Elements) >= 1),
+               bool>::type=false>
+      explicit constexpr tuple(const _Elements&... __elements)
+      : _Inherited(__elements...) { }
+
+
+
+      template<typename... _UElements> using _TMC =
+                  _TC<(sizeof...(_Elements) == sizeof...(_UElements))
+        && (_TC<(sizeof...(_UElements)==1), _Elements...>::
+     template _NotSameTuple<_UElements...>()),
+                      _Elements...>;
+
+
+
+      template<typename... _UElements> using _TMCT =
+                  _TC<(sizeof...(_Elements) == sizeof...(_UElements))
+        && !is_same<tuple<_Elements...>,
+      tuple<_UElements...>>::value,
+                      _Elements...>;
+
+      template<typename... _UElements, typename
+        enable_if<
+    _TMC<_UElements...>::template
+                    _MoveConstructibleTuple<_UElements...>()
+                  && _TMC<_UElements...>::template
+                    _ImplicitlyMoveConvertibleTuple<_UElements...>()
+                  && (sizeof...(_Elements) >= 1),
+        bool>::type=true>
+        constexpr tuple(_UElements&&... __elements)
+        : _Inherited(std::forward<_UElements>(__elements)...) { }
+
+      template<typename... _UElements, typename
+        enable_if<
+    _TMC<_UElements...>::template
+                    _MoveConstructibleTuple<_UElements...>()
+                  && !_TMC<_UElements...>::template
+                    _ImplicitlyMoveConvertibleTuple<_UElements...>()
+                  && (sizeof...(_Elements) >= 1),
+        bool>::type=false>
+        explicit constexpr tuple(_UElements&&... __elements)
+ : _Inherited(std::forward<_UElements>(__elements)...) { }
+
+      constexpr tuple(const tuple&) = default;
+
+      constexpr tuple(tuple&&) = default;
+
+
+
+      template<typename _Dummy> using _TNTC =
+        _TC<is_same<_Dummy, void>::value && sizeof...(_Elements) == 1,
+            _Elements...>;
+
+      template<typename... _UElements, typename _Dummy = void, typename
+        enable_if<_TMCT<_UElements...>::template
+                    _ConstructibleTuple<_UElements...>()
+                  && _TMCT<_UElements...>::template
+                    _ImplicitlyConvertibleTuple<_UElements...>()
+                  && _TNTC<_Dummy>::template
+                    _NonNestedTuple<const tuple<_UElements...>&>(),
+        bool>::type=true>
+        constexpr tuple(const tuple<_UElements...>& __in)
+        : _Inherited(static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
+        { }
+
+      template<typename... _UElements, typename _Dummy = void, typename
+        enable_if<_TMCT<_UElements...>::template
+                    _ConstructibleTuple<_UElements...>()
+                  && !_TMCT<_UElements...>::template
+                    _ImplicitlyConvertibleTuple<_UElements...>()
+                  && _TNTC<_Dummy>::template
+                    _NonNestedTuple<const tuple<_UElements...>&>(),
+        bool>::type=false>
+        explicit constexpr tuple(const tuple<_UElements...>& __in)
+        : _Inherited(static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
+        { }
+
+      template<typename... _UElements, typename _Dummy = void, typename
+        enable_if<_TMCT<_UElements...>::template
+                    _MoveConstructibleTuple<_UElements...>()
+                  && _TMCT<_UElements...>::template
+                    _ImplicitlyMoveConvertibleTuple<_UElements...>()
+                  && _TNTC<_Dummy>::template
+                    _NonNestedTuple<tuple<_UElements...>&&>(),
+        bool>::type=true>
+        constexpr tuple(tuple<_UElements...>&& __in)
+        : _Inherited(static_cast<_Tuple_impl<0, _UElements...>&&>(__in)) { }
+
+      template<typename... _UElements, typename _Dummy = void, typename
+        enable_if<_TMCT<_UElements...>::template
+                    _MoveConstructibleTuple<_UElements...>()
+                  && !_TMCT<_UElements...>::template
+                    _ImplicitlyMoveConvertibleTuple<_UElements...>()
+                  && _TNTC<_Dummy>::template
+                    _NonNestedTuple<tuple<_UElements...>&&>(),
+        bool>::type=false>
+        explicit constexpr tuple(tuple<_UElements...>&& __in)
+        : _Inherited(static_cast<_Tuple_impl<0, _UElements...>&&>(__in)) { }
+
+
+
+      template<typename _Alloc>
+ tuple(allocator_arg_t __tag, const _Alloc& __a)
+ : _Inherited(__tag, __a) { }
+
+      template<typename _Alloc, typename _Dummy = void,
+               typename enable_if<
+                 _TCC<_Dummy>::template
+                   _ConstructibleTuple<_Elements...>()
+                 && _TCC<_Dummy>::template
+                   _ImplicitlyConvertibleTuple<_Elements...>(),
+               bool>::type=true>
+ tuple(allocator_arg_t __tag, const _Alloc& __a,
+       const _Elements&... __elements)
+ : _Inherited(__tag, __a, __elements...) { }
+
+      template<typename _Alloc, typename _Dummy = void,
+               typename enable_if<
+                 _TCC<_Dummy>::template
+                   _ConstructibleTuple<_Elements...>()
+                 && !_TCC<_Dummy>::template
+                   _ImplicitlyConvertibleTuple<_Elements...>(),
+               bool>::type=false>
+ explicit tuple(allocator_arg_t __tag, const _Alloc& __a,
+                       const _Elements&... __elements)
+ : _Inherited(__tag, __a, __elements...) { }
+
+      template<typename _Alloc, typename... _UElements, typename
+        enable_if<_TMC<_UElements...>::template
+                    _MoveConstructibleTuple<_UElements...>()
+                  && _TMC<_UElements...>::template
+                    _ImplicitlyMoveConvertibleTuple<_UElements...>(),
+        bool>::type=true>
+ tuple(allocator_arg_t __tag, const _Alloc& __a,
+       _UElements&&... __elements)
+ : _Inherited(__tag, __a, std::forward<_UElements>(__elements)...)
+        { }
+
+      template<typename _Alloc, typename... _UElements, typename
+        enable_if<_TMC<_UElements...>::template
+                    _MoveConstructibleTuple<_UElements...>()
+                  && !_TMC<_UElements...>::template
+                    _ImplicitlyMoveConvertibleTuple<_UElements...>(),
+        bool>::type=false>
+ explicit tuple(allocator_arg_t __tag, const _Alloc& __a,
+       _UElements&&... __elements)
+ : _Inherited(__tag, __a, std::forward<_UElements>(__elements)...)
+        { }
+
+      template<typename _Alloc>
+ tuple(allocator_arg_t __tag, const _Alloc& __a, const tuple& __in)
+ : _Inherited(__tag, __a, static_cast<const _Inherited&>(__in)) { }
+
+      template<typename _Alloc>
+ tuple(allocator_arg_t __tag, const _Alloc& __a, tuple&& __in)
+ : _Inherited(__tag, __a, static_cast<_Inherited&&>(__in)) { }
+
+      template<typename _Alloc, typename _Dummy = void,
+        typename... _UElements, typename
+        enable_if<_TMCT<_UElements...>::template
+                    _ConstructibleTuple<_UElements...>()
+                  && _TMCT<_UElements...>::template
+                    _ImplicitlyConvertibleTuple<_UElements...>()
+                  && _TNTC<_Dummy>::template
+                    _NonNestedTuple<tuple<_UElements...>&&>(),
+        bool>::type=true>
+ tuple(allocator_arg_t __tag, const _Alloc& __a,
+       const tuple<_UElements...>& __in)
+ : _Inherited(__tag, __a,
+              static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
+ { }
+
+      template<typename _Alloc, typename _Dummy = void,
+        typename... _UElements, typename
+        enable_if<_TMCT<_UElements...>::template
+                    _ConstructibleTuple<_UElements...>()
+                  && !_TMCT<_UElements...>::template
+                    _ImplicitlyConvertibleTuple<_UElements...>()
+                  && _TNTC<_Dummy>::template
+                    _NonNestedTuple<tuple<_UElements...>&&>(),
+        bool>::type=false>
+ explicit tuple(allocator_arg_t __tag, const _Alloc& __a,
+       const tuple<_UElements...>& __in)
+ : _Inherited(__tag, __a,
+              static_cast<const _Tuple_impl<0, _UElements...>&>(__in))
+ { }
+
+      template<typename _Alloc, typename _Dummy = void,
+        typename... _UElements, typename
+        enable_if<_TMCT<_UElements...>::template
+                    _MoveConstructibleTuple<_UElements...>()
+                  && _TMCT<_UElements...>::template
+                    _ImplicitlyMoveConvertibleTuple<_UElements...>()
+                  && _TNTC<_Dummy>::template
+                    _NonNestedTuple<tuple<_UElements...>&&>(),
+        bool>::type=true>
+ tuple(allocator_arg_t __tag, const _Alloc& __a,
+       tuple<_UElements...>&& __in)
+ : _Inherited(__tag, __a,
+              static_cast<_Tuple_impl<0, _UElements...>&&>(__in))
+ { }
+
+      template<typename _Alloc, typename _Dummy = void,
+        typename... _UElements, typename
+        enable_if<_TMCT<_UElements...>::template
+                    _MoveConstructibleTuple<_UElements...>()
+                  && !_TMCT<_UElements...>::template
+                    _ImplicitlyMoveConvertibleTuple<_UElements...>()
+                  && _TNTC<_Dummy>::template
+                    _NonNestedTuple<tuple<_UElements...>&&>(),
+        bool>::type=false>
+ explicit tuple(allocator_arg_t __tag, const _Alloc& __a,
+       tuple<_UElements...>&& __in)
+ : _Inherited(__tag, __a,
+              static_cast<_Tuple_impl<0, _UElements...>&&>(__in))
+ { }
+
+      tuple&
+      operator=(const tuple& __in)
+      {
+ static_cast<_Inherited&>(*this) = __in;
+ return *this;
+      }
+
+      tuple&
+      operator=(tuple&& __in)
+      noexcept(is_nothrow_move_assignable<_Inherited>::value)
+      {
+ static_cast<_Inherited&>(*this) = std::move(__in);
+ return *this;
+      }
+
+      template<typename... _UElements>
+ typename
+        enable_if<sizeof...(_UElements)
+    == sizeof...(_Elements), tuple&>::type
+        operator=(const tuple<_UElements...>& __in)
+        {
+   static_cast<_Inherited&>(*this) = __in;
+   return *this;
+ }
+
+      template<typename... _UElements>
+ typename
+        enable_if<sizeof...(_UElements)
+    == sizeof...(_Elements), tuple&>::type
+        operator=(tuple<_UElements...>&& __in)
+        {
+   static_cast<_Inherited&>(*this) = std::move(__in);
+   return *this;
+ }
+
+      void
+      swap(tuple& __in)
+      noexcept(noexcept(__in._M_swap(__in)))
+      { _Inherited::_M_swap(__in); }
+    };
+  template<>
+    class tuple<>
+    {
+    public:
+      void swap(tuple&) noexcept { }
+
+
+      tuple() = default;
+
+      template<typename _Alloc>
+ tuple(allocator_arg_t, const _Alloc&) { }
+      template<typename _Alloc>
+ tuple(allocator_arg_t, const _Alloc&, const tuple&) { }
+    };
+
+
+
+  template<typename _T1, typename _T2>
+    class tuple<_T1, _T2> : public _Tuple_impl<0, _T1, _T2>
+    {
+      typedef _Tuple_impl<0, _T1, _T2> _Inherited;
+
+    public:
+      template <typename _U1 = _T1,
+                typename _U2 = _T2,
+                typename enable_if<__and_<
+                                     __is_implicitly_default_constructible<_U1>,
+                                     __is_implicitly_default_constructible<_U2>>
+                                   ::value, bool>::type = true>
+
+      constexpr tuple()
+      : _Inherited() { }
+
+      template <typename _U1 = _T1,
+                typename _U2 = _T2,
+                typename enable_if<
+                  __and_<
+                    is_default_constructible<_U1>,
+                    is_default_constructible<_U2>,
+                    __not_<
+                      __and_<__is_implicitly_default_constructible<_U1>,
+                             __is_implicitly_default_constructible<_U2>>>>
+                  ::value, bool>::type = false>
+
+      explicit constexpr tuple()
+      : _Inherited() { }
+
+
+
+      template<typename _Dummy> using _TCC =
+        _TC<is_same<_Dummy, void>::value, _T1, _T2>;
+
+      template<typename _Dummy = void, typename
+               enable_if<_TCC<_Dummy>::template
+                           _ConstructibleTuple<_T1, _T2>()
+                         && _TCC<_Dummy>::template
+                           _ImplicitlyConvertibleTuple<_T1, _T2>(),
+ bool>::type = true>
+        constexpr tuple(const _T1& __a1, const _T2& __a2)
+        : _Inherited(__a1, __a2) { }
+
+      template<typename _Dummy = void, typename
+               enable_if<_TCC<_Dummy>::template
+                           _ConstructibleTuple<_T1, _T2>()
+                         && !_TCC<_Dummy>::template
+                           _ImplicitlyConvertibleTuple<_T1, _T2>(),
+ bool>::type = false>
+        explicit constexpr tuple(const _T1& __a1, const _T2& __a2)
+        : _Inherited(__a1, __a2) { }
+
+
+
+      using _TMC = _TC<true, _T1, _T2>;
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _MoveConstructibleTuple<_U1, _U2>()
+                  && _TMC::template
+                    _ImplicitlyMoveConvertibleTuple<_U1, _U2>()
+           && !is_same<typename decay<_U1>::type,
+         allocator_arg_t>::value,
+ bool>::type = true>
+        constexpr tuple(_U1&& __a1, _U2&& __a2)
+ : _Inherited(std::forward<_U1>(__a1), std::forward<_U2>(__a2)) { }
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _MoveConstructibleTuple<_U1, _U2>()
+                  && !_TMC::template
+                    _ImplicitlyMoveConvertibleTuple<_U1, _U2>()
+           && !is_same<typename decay<_U1>::type,
+         allocator_arg_t>::value,
+ bool>::type = false>
+        explicit constexpr tuple(_U1&& __a1, _U2&& __a2)
+ : _Inherited(std::forward<_U1>(__a1), std::forward<_U2>(__a2)) { }
+
+      constexpr tuple(const tuple&) = default;
+
+      constexpr tuple(tuple&&) = default;
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _ConstructibleTuple<_U1, _U2>()
+                  && _TMC::template
+                    _ImplicitlyConvertibleTuple<_U1, _U2>(),
+ bool>::type = true>
+        constexpr tuple(const tuple<_U1, _U2>& __in)
+ : _Inherited(static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in)) { }
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _ConstructibleTuple<_U1, _U2>()
+                  && !_TMC::template
+                    _ImplicitlyConvertibleTuple<_U1, _U2>(),
+ bool>::type = false>
+        explicit constexpr tuple(const tuple<_U1, _U2>& __in)
+ : _Inherited(static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in)) { }
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _MoveConstructibleTuple<_U1, _U2>()
+                  && _TMC::template
+                    _ImplicitlyMoveConvertibleTuple<_U1, _U2>(),
+ bool>::type = true>
+        constexpr tuple(tuple<_U1, _U2>&& __in)
+ : _Inherited(static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in)) { }
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _MoveConstructibleTuple<_U1, _U2>()
+                  && !_TMC::template
+                    _ImplicitlyMoveConvertibleTuple<_U1, _U2>(),
+ bool>::type = false>
+        explicit constexpr tuple(tuple<_U1, _U2>&& __in)
+ : _Inherited(static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in)) { }
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _ConstructibleTuple<_U1, _U2>()
+                  && _TMC::template
+                    _ImplicitlyConvertibleTuple<_U1, _U2>(),
+ bool>::type = true>
+        constexpr tuple(const pair<_U1, _U2>& __in)
+ : _Inherited(__in.first, __in.second) { }
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _ConstructibleTuple<_U1, _U2>()
+                  && !_TMC::template
+                    _ImplicitlyConvertibleTuple<_U1, _U2>(),
+ bool>::type = false>
+        explicit constexpr tuple(const pair<_U1, _U2>& __in)
+ : _Inherited(__in.first, __in.second) { }
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _MoveConstructibleTuple<_U1, _U2>()
+                  && _TMC::template
+                    _ImplicitlyMoveConvertibleTuple<_U1, _U2>(),
+ bool>::type = true>
+        constexpr tuple(pair<_U1, _U2>&& __in)
+ : _Inherited(std::forward<_U1>(__in.first),
+       std::forward<_U2>(__in.second)) { }
+
+      template<typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _MoveConstructibleTuple<_U1, _U2>()
+                  && !_TMC::template
+                    _ImplicitlyMoveConvertibleTuple<_U1, _U2>(),
+ bool>::type = false>
+        explicit constexpr tuple(pair<_U1, _U2>&& __in)
+ : _Inherited(std::forward<_U1>(__in.first),
+       std::forward<_U2>(__in.second)) { }
+
+
+
+      template<typename _Alloc>
+ tuple(allocator_arg_t __tag, const _Alloc& __a)
+ : _Inherited(__tag, __a) { }
+
+      template<typename _Alloc, typename _Dummy = void,
+               typename enable_if<
+                 _TCC<_Dummy>::template
+                   _ConstructibleTuple<_T1, _T2>()
+                 && _TCC<_Dummy>::template
+                   _ImplicitlyConvertibleTuple<_T1, _T2>(),
+               bool>::type=true>
+
+ tuple(allocator_arg_t __tag, const _Alloc& __a,
+       const _T1& __a1, const _T2& __a2)
+ : _Inherited(__tag, __a, __a1, __a2) { }
+
+      template<typename _Alloc, typename _Dummy = void,
+               typename enable_if<
+                 _TCC<_Dummy>::template
+                   _ConstructibleTuple<_T1, _T2>()
+                 && !_TCC<_Dummy>::template
+                   _ImplicitlyConvertibleTuple<_T1, _T2>(),
+               bool>::type=false>
+
+ explicit tuple(allocator_arg_t __tag, const _Alloc& __a,
+       const _T1& __a1, const _T2& __a2)
+ : _Inherited(__tag, __a, __a1, __a2) { }
+
+      template<typename _Alloc, typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _MoveConstructibleTuple<_U1, _U2>()
+                  && _TMC::template
+                    _ImplicitlyMoveConvertibleTuple<_U1, _U2>(),
+ bool>::type = true>
+ tuple(allocator_arg_t __tag, const _Alloc& __a, _U1&& __a1, _U2&& __a2)
+ : _Inherited(__tag, __a, std::forward<_U1>(__a1),
+              std::forward<_U2>(__a2)) { }
+
+      template<typename _Alloc, typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _MoveConstructibleTuple<_U1, _U2>()
+                  && !_TMC::template
+                    _ImplicitlyMoveConvertibleTuple<_U1, _U2>(),
+ bool>::type = false>
+ explicit tuple(allocator_arg_t __tag, const _Alloc& __a,
+                       _U1&& __a1, _U2&& __a2)
+ : _Inherited(__tag, __a, std::forward<_U1>(__a1),
+              std::forward<_U2>(__a2)) { }
+
+      template<typename _Alloc>
+ tuple(allocator_arg_t __tag, const _Alloc& __a, const tuple& __in)
+ : _Inherited(__tag, __a, static_cast<const _Inherited&>(__in)) { }
+
+      template<typename _Alloc>
+ tuple(allocator_arg_t __tag, const _Alloc& __a, tuple&& __in)
+ : _Inherited(__tag, __a, static_cast<_Inherited&&>(__in)) { }
+
+      template<typename _Alloc, typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _ConstructibleTuple<_U1, _U2>()
+                  && _TMC::template
+                    _ImplicitlyConvertibleTuple<_U1, _U2>(),
+ bool>::type = true>
+ tuple(allocator_arg_t __tag, const _Alloc& __a,
+       const tuple<_U1, _U2>& __in)
+ : _Inherited(__tag, __a,
+              static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in))
+ { }
+
+      template<typename _Alloc, typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _ConstructibleTuple<_U1, _U2>()
+                  && !_TMC::template
+                    _ImplicitlyConvertibleTuple<_U1, _U2>(),
+ bool>::type = false>
+ explicit tuple(allocator_arg_t __tag, const _Alloc& __a,
+       const tuple<_U1, _U2>& __in)
+ : _Inherited(__tag, __a,
+              static_cast<const _Tuple_impl<0, _U1, _U2>&>(__in))
+ { }
+
+      template<typename _Alloc, typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _MoveConstructibleTuple<_U1, _U2>()
+                  && _TMC::template
+                    _ImplicitlyMoveConvertibleTuple<_U1, _U2>(),
+ bool>::type = true>
+ tuple(allocator_arg_t __tag, const _Alloc& __a, tuple<_U1, _U2>&& __in)
+ : _Inherited(__tag, __a, static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in))
+ { }
+
+      template<typename _Alloc, typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _MoveConstructibleTuple<_U1, _U2>()
+                  && !_TMC::template
+                    _ImplicitlyMoveConvertibleTuple<_U1, _U2>(),
+ bool>::type = false>
+ explicit tuple(allocator_arg_t __tag, const _Alloc& __a,
+                       tuple<_U1, _U2>&& __in)
+ : _Inherited(__tag, __a, static_cast<_Tuple_impl<0, _U1, _U2>&&>(__in))
+ { }
+
+      template<typename _Alloc, typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _ConstructibleTuple<_U1, _U2>()
+                  && _TMC::template
+                    _ImplicitlyConvertibleTuple<_U1, _U2>(),
+ bool>::type = true>
+        tuple(allocator_arg_t __tag, const _Alloc& __a,
+       const pair<_U1, _U2>& __in)
+ : _Inherited(__tag, __a, __in.first, __in.second) { }
+
+      template<typename _Alloc, typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _ConstructibleTuple<_U1, _U2>()
+                  && !_TMC::template
+                    _ImplicitlyConvertibleTuple<_U1, _U2>(),
+ bool>::type = false>
+        explicit tuple(allocator_arg_t __tag, const _Alloc& __a,
+       const pair<_U1, _U2>& __in)
+ : _Inherited(__tag, __a, __in.first, __in.second) { }
+
+      template<typename _Alloc, typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _MoveConstructibleTuple<_U1, _U2>()
+                  && _TMC::template
+                    _ImplicitlyMoveConvertibleTuple<_U1, _U2>(),
+ bool>::type = true>
+        tuple(allocator_arg_t __tag, const _Alloc& __a, pair<_U1, _U2>&& __in)
+ : _Inherited(__tag, __a, std::forward<_U1>(__in.first),
+       std::forward<_U2>(__in.second)) { }
+
+      template<typename _Alloc, typename _U1, typename _U2, typename
+        enable_if<_TMC::template
+                    _MoveConstructibleTuple<_U1, _U2>()
+                  && !_TMC::template
+                    _ImplicitlyMoveConvertibleTuple<_U1, _U2>(),
+ bool>::type = false>
+        explicit tuple(allocator_arg_t __tag, const _Alloc& __a,
+                       pair<_U1, _U2>&& __in)
+ : _Inherited(__tag, __a, std::forward<_U1>(__in.first),
+       std::forward<_U2>(__in.second)) { }
+
+      tuple&
+      operator=(const tuple& __in)
+      {
+ static_cast<_Inherited&>(*this) = __in;
+ return *this;
+      }
+
+      tuple&
+      operator=(tuple&& __in)
+      noexcept(is_nothrow_move_assignable<_Inherited>::value)
+      {
+ static_cast<_Inherited&>(*this) = std::move(__in);
+ return *this;
+      }
+
+      template<typename _U1, typename _U2>
+        tuple&
+        operator=(const tuple<_U1, _U2>& __in)
+        {
+   static_cast<_Inherited&>(*this) = __in;
+   return *this;
+ }
+
+      template<typename _U1, typename _U2>
+        tuple&
+        operator=(tuple<_U1, _U2>&& __in)
+        {
+   static_cast<_Inherited&>(*this) = std::move(__in);
+   return *this;
+ }
+
+      template<typename _U1, typename _U2>
+        tuple&
+        operator=(const pair<_U1, _U2>& __in)
+        {
+   this->_M_head(*this) = __in.first;
+   this->_M_tail(*this)._M_head(*this) = __in.second;
+   return *this;
+ }
+
+      template<typename _U1, typename _U2>
+        tuple&
+        operator=(pair<_U1, _U2>&& __in)
+        {
+   this->_M_head(*this) = std::forward<_U1>(__in.first);
+   this->_M_tail(*this)._M_head(*this) = std::forward<_U2>(__in.second);
+   return *this;
+ }
+
+      void
+      swap(tuple& __in)
+      noexcept(noexcept(__in._M_swap(__in)))
+      { _Inherited::_M_swap(__in); }
+    };
+
+
+
+  template<typename... _Elements>
+    struct tuple_size<tuple<_Elements...>>
+    : public integral_constant<std::size_t, sizeof...(_Elements)> { };
+  template<std::size_t __i, typename _Head, typename... _Tail>
+    struct tuple_element<__i, tuple<_Head, _Tail...> >
+    : tuple_element<__i - 1, tuple<_Tail...> > { };
+
+
+
+
+  template<typename _Head, typename... _Tail>
+    struct tuple_element<0, tuple<_Head, _Tail...> >
+    {
+      typedef _Head type;
+    };
+
+
+
+
+  template<size_t __i>
+    struct tuple_element<__i, tuple<>>
+    {
+      static_assert(__i < tuple_size<tuple<>>::value,
+   "tuple index is in range");
+    };
+
+  template<std::size_t __i, typename _Head, typename... _Tail>
+    constexpr _Head&
+    __get_helper(_Tuple_impl<__i, _Head, _Tail...>& __t) noexcept
+    { return _Tuple_impl<__i, _Head, _Tail...>::_M_head(__t); }
+
+  template<std::size_t __i, typename _Head, typename... _Tail>
+    constexpr const _Head&
+    __get_helper(const _Tuple_impl<__i, _Head, _Tail...>& __t) noexcept
+    { return _Tuple_impl<__i, _Head, _Tail...>::_M_head(__t); }
+
+
+  template<std::size_t __i, typename... _Elements>
+    constexpr __tuple_element_t<__i, tuple<_Elements...>>&
+    get(tuple<_Elements...>& __t) noexcept
+    { return std::__get_helper<__i>(__t); }
+
+
+  template<std::size_t __i, typename... _Elements>
+    constexpr const __tuple_element_t<__i, tuple<_Elements...>>&
+    get(const tuple<_Elements...>& __t) noexcept
+    { return std::__get_helper<__i>(__t); }
+
+
+  template<std::size_t __i, typename... _Elements>
+    constexpr __tuple_element_t<__i, tuple<_Elements...>>&&
+    get(tuple<_Elements...>&& __t) noexcept
+    {
+      typedef __tuple_element_t<__i, tuple<_Elements...>> __element_type;
+      return std::forward<__element_type&&>(std::get<__i>(__t));
+    }
+
+
+  template<std::size_t __i, typename... _Elements>
+    constexpr const __tuple_element_t<__i, tuple<_Elements...>>&&
+    get(const tuple<_Elements...>&& __t) noexcept
+    {
+      typedef __tuple_element_t<__i, tuple<_Elements...>> __element_type;
+      return std::forward<const __element_type&&>(std::get<__i>(__t));
+    }
+
+
+
+
+
+  template<typename _Head, size_t __i, typename... _Tail>
+    constexpr _Head&
+    __get_helper2(_Tuple_impl<__i, _Head, _Tail...>& __t) noexcept
+    { return _Tuple_impl<__i, _Head, _Tail...>::_M_head(__t); }
+
+  template<typename _Head, size_t __i, typename... _Tail>
+    constexpr const _Head&
+    __get_helper2(const _Tuple_impl<__i, _Head, _Tail...>& __t) noexcept
+    { return _Tuple_impl<__i, _Head, _Tail...>::_M_head(__t); }
+
+
+  template <typename _Tp, typename... _Types>
+    constexpr _Tp&
+    get(tuple<_Types...>& __t) noexcept
+    { return std::__get_helper2<_Tp>(__t); }
+
+
+  template <typename _Tp, typename... _Types>
+    constexpr _Tp&&
+    get(tuple<_Types...>&& __t) noexcept
+    { return std::forward<_Tp&&>(std::__get_helper2<_Tp>(__t)); }
+
+
+  template <typename _Tp, typename... _Types>
+    constexpr const _Tp&
+    get(const tuple<_Types...>& __t) noexcept
+    { return std::__get_helper2<_Tp>(__t); }
+
+
+
+  template <typename _Tp, typename... _Types>
+    constexpr const _Tp&&
+    get(const tuple<_Types...>&& __t) noexcept
+    { return std::forward<const _Tp&&>(std::__get_helper2<_Tp>(__t)); }
+
+
+
+  template<typename _Tp, typename _Up, size_t __i, size_t __size>
+    struct __tuple_compare
+    {
+      static constexpr bool
+      __eq(const _Tp& __t, const _Up& __u)
+      {
+ return bool(std::get<__i>(__t) == std::get<__i>(__u))
+   && __tuple_compare<_Tp, _Up, __i + 1, __size>::__eq(__t, __u);
+      }
+
+      static constexpr bool
+      __less(const _Tp& __t, const _Up& __u)
+      {
+ return bool(std::get<__i>(__t) < std::get<__i>(__u))
+   || (!bool(std::get<__i>(__u) < std::get<__i>(__t))
+       && __tuple_compare<_Tp, _Up, __i + 1, __size>::__less(__t, __u));
+      }
+    };
+
+  template<typename _Tp, typename _Up, size_t __size>
+    struct __tuple_compare<_Tp, _Up, __size, __size>
+    {
+      static constexpr bool
+      __eq(const _Tp&, const _Up&) { return true; }
+
+      static constexpr bool
+      __less(const _Tp&, const _Up&) { return false; }
+    };
+
+  template<typename... _TElements, typename... _UElements>
+    constexpr bool
+    operator==(const tuple<_TElements...>& __t,
+        const tuple<_UElements...>& __u)
+    {
+      static_assert(sizeof...(_TElements) == sizeof...(_UElements),
+   "tuple objects can only be compared if they have equal sizes.");
+      using __compare = __tuple_compare<tuple<_TElements...>,
+     tuple<_UElements...>,
+     0, sizeof...(_TElements)>;
+      return __compare::__eq(__t, __u);
+    }
+
+  template<typename... _TElements, typename... _UElements>
+    constexpr bool
+    operator<(const tuple<_TElements...>& __t,
+       const tuple<_UElements...>& __u)
+    {
+      static_assert(sizeof...(_TElements) == sizeof...(_UElements),
+   "tuple objects can only be compared if they have equal sizes.");
+      using __compare = __tuple_compare<tuple<_TElements...>,
+     tuple<_UElements...>,
+     0, sizeof...(_TElements)>;
+      return __compare::__less(__t, __u);
+    }
+
+  template<typename... _TElements, typename... _UElements>
+    constexpr bool
+    operator!=(const tuple<_TElements...>& __t,
+        const tuple<_UElements...>& __u)
+    { return !(__t == __u); }
+
+  template<typename... _TElements, typename... _UElements>
+    constexpr bool
+    operator>(const tuple<_TElements...>& __t,
+       const tuple<_UElements...>& __u)
+    { return __u < __t; }
+
+  template<typename... _TElements, typename... _UElements>
+    constexpr bool
+    operator<=(const tuple<_TElements...>& __t,
+        const tuple<_UElements...>& __u)
+    { return !(__u < __t); }
+
+  template<typename... _TElements, typename... _UElements>
+    constexpr bool
+    operator>=(const tuple<_TElements...>& __t,
+        const tuple<_UElements...>& __u)
+    { return !(__t < __u); }
+
+
+  template<typename... _Elements>
+    constexpr tuple<typename __decay_and_strip<_Elements>::__type...>
+    make_tuple(_Elements&&... __args)
+    {
+      typedef tuple<typename __decay_and_strip<_Elements>::__type...>
+ __result_type;
+      return __result_type(std::forward<_Elements>(__args)...);
+    }
+
+
+
+  template<typename... _Elements>
+    constexpr tuple<_Elements&&...>
+    forward_as_tuple(_Elements&&... __args) noexcept
+    { return tuple<_Elements&&...>(std::forward<_Elements>(__args)...); }
+
+  template<size_t, typename, typename, size_t>
+    struct __make_tuple_impl;
+
+  template<size_t _Idx, typename _Tuple, typename... _Tp, size_t _Nm>
+    struct __make_tuple_impl<_Idx, tuple<_Tp...>, _Tuple, _Nm>
+    : __make_tuple_impl<_Idx + 1,
+   tuple<_Tp..., __tuple_element_t<_Idx, _Tuple>>,
+   _Tuple, _Nm>
+    { };
+
+  template<std::size_t _Nm, typename _Tuple, typename... _Tp>
+    struct __make_tuple_impl<_Nm, tuple<_Tp...>, _Tuple, _Nm>
+    {
+      typedef tuple<_Tp...> __type;
+    };
+
+  template<typename _Tuple>
+    struct __do_make_tuple
+    : __make_tuple_impl<0, tuple<>, _Tuple, std::tuple_size<_Tuple>::value>
+    { };
+
+
+  template<typename _Tuple>
+    struct __make_tuple
+    : public __do_make_tuple<typename std::remove_cv
+            <typename std::remove_reference<_Tuple>::type>::type>
+    { };
+
+
+  template<typename...>
+    struct __combine_tuples;
+
+  template<>
+    struct __combine_tuples<>
+    {
+      typedef tuple<> __type;
+    };
+
+  template<typename... _Ts>
+    struct __combine_tuples<tuple<_Ts...>>
+    {
+      typedef tuple<_Ts...> __type;
+    };
+
+  template<typename... _T1s, typename... _T2s, typename... _Rem>
+    struct __combine_tuples<tuple<_T1s...>, tuple<_T2s...>, _Rem...>
+    {
+      typedef typename __combine_tuples<tuple<_T1s..., _T2s...>,
+     _Rem...>::__type __type;
+    };
+
+
+  template<typename... _Tpls>
+    struct __tuple_cat_result
+    {
+      typedef typename __combine_tuples
+        <typename __make_tuple<_Tpls>::__type...>::__type __type;
+    };
+
+
+
+  template<typename...>
+    struct __make_1st_indices;
+
+  template<>
+    struct __make_1st_indices<>
+    {
+      typedef std::_Index_tuple<> __type;
+    };
+
+  template<typename _Tp, typename... _Tpls>
+    struct __make_1st_indices<_Tp, _Tpls...>
+    {
+      typedef typename std::_Build_index_tuple<std::tuple_size<
+ typename std::remove_reference<_Tp>::type>::value>::__type __type;
+    };
+
+
+
+
+  template<typename _Ret, typename _Indices, typename... _Tpls>
+    struct __tuple_concater;
+
+  template<typename _Ret, std::size_t... _Is, typename _Tp, typename... _Tpls>
+    struct __tuple_concater<_Ret, std::_Index_tuple<_Is...>, _Tp, _Tpls...>
+    {
+      template<typename... _Us>
+        static constexpr _Ret
+        _S_do(_Tp&& __tp, _Tpls&&... __tps, _Us&&... __us)
+        {
+   typedef typename __make_1st_indices<_Tpls...>::__type __idx;
+   typedef __tuple_concater<_Ret, __idx, _Tpls...> __next;
+   return __next::_S_do(std::forward<_Tpls>(__tps)...,
+          std::forward<_Us>(__us)...,
+          std::get<_Is>(std::forward<_Tp>(__tp))...);
+ }
+    };
+
+  template<typename _Ret>
+    struct __tuple_concater<_Ret, std::_Index_tuple<>>
+    {
+      template<typename... _Us>
+ static constexpr _Ret
+ _S_do(_Us&&... __us)
+        {
+   return _Ret(std::forward<_Us>(__us)...);
+ }
+    };
+
+
+  template<typename... _Tpls, typename = typename
+           enable_if<__and_<__is_tuple_like<_Tpls>...>::value>::type>
+    constexpr auto
+    tuple_cat(_Tpls&&... __tpls)
+    -> typename __tuple_cat_result<_Tpls...>::__type
+    {
+      typedef typename __tuple_cat_result<_Tpls...>::__type __ret;
+      typedef typename __make_1st_indices<_Tpls...>::__type __idx;
+      typedef __tuple_concater<__ret, __idx, _Tpls...> __concater;
+      return __concater::_S_do(std::forward<_Tpls>(__tpls)...);
+    }
+
+
+
+
+  template<typename... _Elements>
+    constexpr tuple<_Elements&...>
+    tie(_Elements&... __args) noexcept
+    { return tuple<_Elements&...>(__args...); }
+
+
+  template<typename... _Elements>
+    inline
+
+
+    typename enable_if<__and_<__is_swappable<_Elements>...>::value
+      >::type
+
+
+
+    swap(tuple<_Elements...>& __x, tuple<_Elements...>& __y)
+    noexcept(noexcept(__x.swap(__y)))
+    { __x.swap(__y); }
+
+
+  template<typename... _Elements>
+    typename enable_if<!__and_<__is_swappable<_Elements>...>::value>::type
+    swap(tuple<_Elements...>&, tuple<_Elements...>&) = delete;
+
+
+
+
+
+
+  struct _Swallow_assign
+  {
+    template<class _Tp>
+      constexpr const _Swallow_assign&
+      operator=(const _Tp&) const
+      { return *this; }
+  };
+
+
+
+  constexpr _Swallow_assign ignore{};
+
+
+  template<typename... _Types, typename _Alloc>
+    struct uses_allocator<tuple<_Types...>, _Alloc> : true_type { };
+
+
+  template<class _T1, class _T2>
+    template<typename... _Args1, typename... _Args2>
+      inline
+      pair<_T1, _T2>::
+      pair(piecewise_construct_t,
+    tuple<_Args1...> __first, tuple<_Args2...> __second)
+      : pair(__first, __second,
+      typename _Build_index_tuple<sizeof...(_Args1)>::__type(),
+      typename _Build_index_tuple<sizeof...(_Args2)>::__type())
+      { }
+
+  template<class _T1, class _T2>
+    template<typename... _Args1, std::size_t... _Indexes1,
+             typename... _Args2, std::size_t... _Indexes2>
+      inline
+      pair<_T1, _T2>::
+      pair(tuple<_Args1...>& __tuple1, tuple<_Args2...>& __tuple2,
+    _Index_tuple<_Indexes1...>, _Index_tuple<_Indexes2...>)
+      : first(std::forward<_Args1>(std::get<_Indexes1>(__tuple1))...),
+        second(std::forward<_Args2>(std::get<_Indexes2>(__tuple2))...)
+      { }
+
+}
+
+
+
+       
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+
+  template<typename _Res, typename... _ArgTypes>
+    struct _Maybe_unary_or_binary_function { };
+
+
+  template<typename _Res, typename _T1>
+    struct _Maybe_unary_or_binary_function<_Res, _T1>
+    : std::unary_function<_T1, _Res> { };
+
+
+  template<typename _Res, typename _T1, typename _T2>
+    struct _Maybe_unary_or_binary_function<_Res, _T1, _T2>
+    : std::binary_function<_T1, _T2, _Res> { };
+
+  template<typename _Signature>
+    struct _Mem_fn_traits;
+
+  template<typename _Res, typename _Class, typename... _ArgTypes>
+    struct _Mem_fn_traits_base
+    {
+      using __result_type = _Res;
+      using __maybe_type
+ = _Maybe_unary_or_binary_function<_Res, _Class*, _ArgTypes...>;
+      using __arity = integral_constant<size_t, sizeof...(_ArgTypes)>;
+    };
+template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes...) > : _Mem_fn_traits_base<_Res, _Class, _ArgTypes...> { using __vararg = false_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes... ...) > : _Mem_fn_traits_base<_Res, _Class, _ArgTypes...> { using __vararg = true_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes...) const > : _Mem_fn_traits_base<_Res, const _Class, _ArgTypes...> { using __vararg = false_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes... ...) const > : _Mem_fn_traits_base<_Res, const _Class, _ArgTypes...> { using __vararg = true_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes...) volatile > : _Mem_fn_traits_base<_Res, volatile _Class, _ArgTypes...> { using __vararg = false_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes... ...) volatile > : _Mem_fn_traits_base<_Res, volatile _Class, _ArgTypes...> { using __vararg = true_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes...) const volatile > : _Mem_fn_traits_base<_Res, const volatile _Class, _ArgTypes...> { using __vararg = false_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes... ...) const volatile > : _Mem_fn_traits_base<_Res, const volatile _Class, _ArgTypes...> { using __vararg = true_type; };
+template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes...) &> : _Mem_fn_traits_base<_Res, _Class, _ArgTypes...> { using __vararg = false_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes... ...) &> : _Mem_fn_traits_base<_Res, _Class, _ArgTypes...> { using __vararg = true_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes...) const &> : _Mem_fn_traits_base<_Res, const _Class, _ArgTypes...> { using __vararg = false_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes... ...) const &> : _Mem_fn_traits_base<_Res, const _Class, _ArgTypes...> { using __vararg = true_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes...) volatile &> : _Mem_fn_traits_base<_Res, volatile _Class, _ArgTypes...> { using __vararg = false_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes... ...) volatile &> : _Mem_fn_traits_base<_Res, volatile _Class, _ArgTypes...> { using __vararg = true_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes...) const volatile &> : _Mem_fn_traits_base<_Res, const volatile _Class, _ArgTypes...> { using __vararg = false_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes... ...) const volatile &> : _Mem_fn_traits_base<_Res, const volatile _Class, _ArgTypes...> { using __vararg = true_type; };
+template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes...) &&> : _Mem_fn_traits_base<_Res, _Class, _ArgTypes...> { using __vararg = false_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes... ...) &&> : _Mem_fn_traits_base<_Res, _Class, _ArgTypes...> { using __vararg = true_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes...) const &&> : _Mem_fn_traits_base<_Res, const _Class, _ArgTypes...> { using __vararg = false_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes... ...) const &&> : _Mem_fn_traits_base<_Res, const _Class, _ArgTypes...> { using __vararg = true_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes...) volatile &&> : _Mem_fn_traits_base<_Res, volatile _Class, _ArgTypes...> { using __vararg = false_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes... ...) volatile &&> : _Mem_fn_traits_base<_Res, volatile _Class, _ArgTypes...> { using __vararg = true_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes...) const volatile &&> : _Mem_fn_traits_base<_Res, const volatile _Class, _ArgTypes...> { using __vararg = false_type; }; template<typename _Res, typename _Class, typename... _ArgTypes> struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes... ...) const volatile &&> : _Mem_fn_traits_base<_Res, const volatile _Class, _ArgTypes...> { using __vararg = true_type; };
+  template<typename _Functor, typename = __void_t<>>
+    struct _Maybe_get_result_type
+    { };
+
+  template<typename _Functor>
+    struct _Maybe_get_result_type<_Functor,
+      __void_t<typename _Functor::result_type>>
+    { typedef typename _Functor::result_type result_type; };
+
+
+
+
+
+  template<typename _Functor>
+    struct _Weak_result_type_impl
+    : _Maybe_get_result_type<_Functor>
+    { };
+
+
+  template<typename _Res, typename... _ArgTypes >
+    struct _Weak_result_type_impl<_Res(_ArgTypes...) >
+    { typedef _Res result_type; };
+
+
+  template<typename _Res, typename... _ArgTypes >
+    struct _Weak_result_type_impl<_Res(_ArgTypes......) >
+    { typedef _Res result_type; };
+
+
+  template<typename _Res, typename... _ArgTypes >
+    struct _Weak_result_type_impl<_Res(*)(_ArgTypes...) >
+    { typedef _Res result_type; };
+
+
+  template<typename _Res, typename... _ArgTypes >
+    struct
+    _Weak_result_type_impl<_Res(*)(_ArgTypes......) >
+    { typedef _Res result_type; };
+
+
+  template<typename _Functor,
+    bool = is_member_function_pointer<_Functor>::value>
+    struct _Weak_result_type_memfun
+    : _Weak_result_type_impl<_Functor>
+    { };
+
+
+  template<typename _MemFunPtr>
+    struct _Weak_result_type_memfun<_MemFunPtr, true>
+    {
+      using result_type = typename _Mem_fn_traits<_MemFunPtr>::__result_type;
+    };
+
+
+  template<typename _Func, typename _Class>
+    struct _Weak_result_type_memfun<_Func _Class::*, false>
+    { };
+
+
+
+
+
+  template<typename _Functor>
+    struct _Weak_result_type
+    : _Weak_result_type_memfun<typename remove_cv<_Functor>::type>
+    { };
+
+
+  template<typename _Tp, typename = __void_t<>>
+    struct _Refwrap_base_arg1
+    { };
+
+
+  template<typename _Tp>
+    struct _Refwrap_base_arg1<_Tp,
+         __void_t<typename _Tp::argument_type>>
+    {
+      typedef typename _Tp::argument_type argument_type;
+    };
+
+
+  template<typename _Tp, typename = __void_t<>>
+    struct _Refwrap_base_arg2
+    { };
+
+
+  template<typename _Tp>
+    struct _Refwrap_base_arg2<_Tp,
+         __void_t<typename _Tp::first_argument_type,
+           typename _Tp::second_argument_type>>
+    {
+      typedef typename _Tp::first_argument_type first_argument_type;
+      typedef typename _Tp::second_argument_type second_argument_type;
+    };
+
+
+
+
+
+
+
+  template<typename _Tp>
+    struct _Reference_wrapper_base
+    : _Weak_result_type<_Tp>, _Refwrap_base_arg1<_Tp>, _Refwrap_base_arg2<_Tp>
+    { };
+
+
+  template<typename _Res, typename _T1 >
+    struct _Reference_wrapper_base<_Res(_T1) >
+    : unary_function<_T1, _Res>
+    { };
+
+  template<typename _Res, typename _T1>
+    struct _Reference_wrapper_base<_Res(_T1) const>
+    : unary_function<_T1, _Res>
+    { };
+
+  template<typename _Res, typename _T1>
+    struct _Reference_wrapper_base<_Res(_T1) volatile>
+    : unary_function<_T1, _Res>
+    { };
+
+  template<typename _Res, typename _T1>
+    struct _Reference_wrapper_base<_Res(_T1) const volatile>
+    : unary_function<_T1, _Res>
+    { };
+
+
+  template<typename _Res, typename _T1, typename _T2 >
+    struct _Reference_wrapper_base<_Res(_T1, _T2) >
+    : binary_function<_T1, _T2, _Res>
+    { };
+
+  template<typename _Res, typename _T1, typename _T2>
+    struct _Reference_wrapper_base<_Res(_T1, _T2) const>
+    : binary_function<_T1, _T2, _Res>
+    { };
+
+  template<typename _Res, typename _T1, typename _T2>
+    struct _Reference_wrapper_base<_Res(_T1, _T2) volatile>
+    : binary_function<_T1, _T2, _Res>
+    { };
+
+  template<typename _Res, typename _T1, typename _T2>
+    struct _Reference_wrapper_base<_Res(_T1, _T2) const volatile>
+    : binary_function<_T1, _T2, _Res>
+    { };
+
+
+  template<typename _Res, typename _T1 >
+    struct _Reference_wrapper_base<_Res(*)(_T1) >
+    : unary_function<_T1, _Res>
+    { };
+
+
+  template<typename _Res, typename _T1, typename _T2 >
+    struct _Reference_wrapper_base<_Res(*)(_T1, _T2) >
+    : binary_function<_T1, _T2, _Res>
+    { };
+
+  template<typename _Tp, bool = is_member_function_pointer<_Tp>::value>
+    struct _Reference_wrapper_base_memfun
+    : _Reference_wrapper_base<_Tp>
+    { };
+
+  template<typename _MemFunPtr>
+    struct _Reference_wrapper_base_memfun<_MemFunPtr, true>
+    : _Mem_fn_traits<_MemFunPtr>::__maybe_type
+    {
+      using result_type = typename _Mem_fn_traits<_MemFunPtr>::__result_type;
+    };
+
+
+
+
+
+
+  template<typename _Tp>
+    class reference_wrapper
+    : public _Reference_wrapper_base_memfun<typename remove_cv<_Tp>::type>
+    {
+      _Tp* _M_data;
+
+    public:
+      typedef _Tp type;
+
+      reference_wrapper(_Tp& __indata) noexcept
+      : _M_data(std::__addressof(__indata))
+      { }
+
+      reference_wrapper(_Tp&&) = delete;
+
+      reference_wrapper(const reference_wrapper&) = default;
+
+      reference_wrapper&
+      operator=(const reference_wrapper&) = default;
+
+      operator _Tp&() const noexcept
+      { return this->get(); }
+
+      _Tp&
+      get() const noexcept
+      { return *_M_data; }
+
+      template<typename... _Args>
+ typename result_of<_Tp&(_Args&&...)>::type
+ operator()(_Args&&... __args) const
+ {
+   return std::__invoke(get(), std::forward<_Args>(__args)...);
+ }
+    };
+
+
+
+  template<typename _Tp>
+    inline reference_wrapper<_Tp>
+    ref(_Tp& __t) noexcept
+    { return reference_wrapper<_Tp>(__t); }
+
+
+  template<typename _Tp>
+    inline reference_wrapper<const _Tp>
+    cref(const _Tp& __t) noexcept
+    { return reference_wrapper<const _Tp>(__t); }
+
+  template<typename _Tp>
+    void ref(const _Tp&&) = delete;
+
+  template<typename _Tp>
+    void cref(const _Tp&&) = delete;
+
+
+  template<typename _Tp>
+    inline reference_wrapper<_Tp>
+    ref(reference_wrapper<_Tp> __t) noexcept
+    { return __t; }
+
+
+  template<typename _Tp>
+    inline reference_wrapper<const _Tp>
+    cref(reference_wrapper<_Tp> __t) noexcept
+    { return { __t.get() }; }
+
+
+
+
+}
+       
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+
+
+
+
+
+
+  class bad_function_call : public std::exception
+  {
+  public:
+    virtual ~bad_function_call() noexcept;
+
+    const char* what() const noexcept;
+  };
+
+
+
+
+
+
+
+  template<typename _Tp>
+    struct __is_location_invariant
+    : is_trivially_copyable<_Tp>::type
+    { };
+
+  class _Undefined_class;
+
+  union _Nocopy_types
+  {
+    void* _M_object;
+    const void* _M_const_object;
+    void (*_M_function_pointer)();
+    void (_Undefined_class::*_M_member_pointer)();
+  };
+
+  union [[gnu::may_alias]] _Any_data
+  {
+    void* _M_access() { return &_M_pod_data[0]; }
+    const void* _M_access() const { return &_M_pod_data[0]; }
+
+    template<typename _Tp>
+      _Tp&
+      _M_access()
+      { return *static_cast<_Tp*>(_M_access()); }
+
+    template<typename _Tp>
+      const _Tp&
+      _M_access() const
+      { return *static_cast<const _Tp*>(_M_access()); }
+
+    _Nocopy_types _M_unused;
+    char _M_pod_data[sizeof(_Nocopy_types)];
+  };
+
+  enum _Manager_operation
+  {
+    __get_type_info,
+    __get_functor_ptr,
+    __clone_functor,
+    __destroy_functor
+  };
+
+
+
+  template<typename _Tp>
+    struct _Simple_type_wrapper
+    {
+      _Simple_type_wrapper(_Tp __value) : __value(__value) { }
+
+      _Tp __value;
+    };
+
+  template<typename _Tp>
+    struct __is_location_invariant<_Simple_type_wrapper<_Tp> >
+    : __is_location_invariant<_Tp>
+    { };
+
+  template<typename _Signature>
+    class function;
+
+
+  class _Function_base
+  {
+  public:
+    static const std::size_t _M_max_size = sizeof(_Nocopy_types);
+    static const std::size_t _M_max_align = __alignof__(_Nocopy_types);
+
+    template<typename _Functor>
+      class _Base_manager
+      {
+      protected:
+ static const bool __stored_locally =
+ (__is_location_invariant<_Functor>::value
+  && sizeof(_Functor) <= _M_max_size
+  && __alignof__(_Functor) <= _M_max_align
+  && (_M_max_align % __alignof__(_Functor) == 0));
+
+ typedef integral_constant<bool, __stored_locally> _Local_storage;
+
+
+ static _Functor*
+ _M_get_pointer(const _Any_data& __source)
+ {
+   const _Functor* __ptr =
+     __stored_locally? std::__addressof(__source._M_access<_Functor>())
+                                 : __source._M_access<_Functor*>();
+   return const_cast<_Functor*>(__ptr);
+ }
+
+
+
+ static void
+ _M_clone(_Any_data& __dest, const _Any_data& __source, true_type)
+ {
+   ::new (__dest._M_access()) _Functor(__source._M_access<_Functor>());
+ }
+
+
+
+ static void
+ _M_clone(_Any_data& __dest, const _Any_data& __source, false_type)
+ {
+   __dest._M_access<_Functor*>() =
+     new _Functor(*__source._M_access<_Functor*>());
+ }
+
+
+
+ static void
+ _M_destroy(_Any_data& __victim, true_type)
+ {
+   __victim._M_access<_Functor>().~_Functor();
+ }
+
+
+ static void
+ _M_destroy(_Any_data& __victim, false_type)
+ {
+   delete __victim._M_access<_Functor*>();
+ }
+
+      public:
+ static bool
+ _M_manager(_Any_data& __dest, const _Any_data& __source,
+     _Manager_operation __op)
+ {
+   switch (__op)
+     {
+
+     case __get_type_info:
+       __dest._M_access<const type_info*>() = &typeid(_Functor);
+       break;
+
+     case __get_functor_ptr:
+       __dest._M_access<_Functor*>() = _M_get_pointer(__source);
+       break;
+
+     case __clone_functor:
+       _M_clone(__dest, __source, _Local_storage());
+       break;
+
+     case __destroy_functor:
+       _M_destroy(__dest, _Local_storage());
+       break;
+     }
+   return false;
+ }
+
+ static void
+ _M_init_functor(_Any_data& __functor, _Functor&& __f)
+ { _M_init_functor(__functor, std::move(__f), _Local_storage()); }
+
+ template<typename _Signature>
+   static bool
+   _M_not_empty_function(const function<_Signature>& __f)
+   { return static_cast<bool>(__f); }
+
+ template<typename _Tp>
+   static bool
+   _M_not_empty_function(_Tp* __fp)
+   { return __fp != nullptr; }
+
+ template<typename _Class, typename _Tp>
+   static bool
+   _M_not_empty_function(_Tp _Class::* __mp)
+   { return __mp != nullptr; }
+
+ template<typename _Tp>
+   static bool
+   _M_not_empty_function(const _Tp&)
+   { return true; }
+
+      private:
+ static void
+ _M_init_functor(_Any_data& __functor, _Functor&& __f, true_type)
+ { ::new (__functor._M_access()) _Functor(std::move(__f)); }
+
+ static void
+ _M_init_functor(_Any_data& __functor, _Functor&& __f, false_type)
+ { __functor._M_access<_Functor*>() = new _Functor(std::move(__f)); }
+      };
+
+    _Function_base() : _M_manager(nullptr) { }
+
+    ~_Function_base()
+    {
+      if (_M_manager)
+ _M_manager(_M_functor, _M_functor, __destroy_functor);
+    }
+
+    bool _M_empty() const { return !_M_manager; }
+
+    typedef bool (*_Manager_type)(_Any_data&, const _Any_data&,
+      _Manager_operation);
+
+    _Any_data _M_functor;
+    _Manager_type _M_manager;
+  };
+
+  template<typename _Signature, typename _Functor>
+    class _Function_handler;
+
+  template<typename _Res, typename _Functor, typename... _ArgTypes>
+    class _Function_handler<_Res(_ArgTypes...), _Functor>
+    : public _Function_base::_Base_manager<_Functor>
+    {
+      typedef _Function_base::_Base_manager<_Functor> _Base;
+
+    public:
+      static _Res
+      _M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
+      {
+ return (*_Base::_M_get_pointer(__functor))(
+     std::forward<_ArgTypes>(__args)...);
+      }
+    };
+
+  template<typename _Functor, typename... _ArgTypes>
+    class _Function_handler<void(_ArgTypes...), _Functor>
+    : public _Function_base::_Base_manager<_Functor>
+    {
+      typedef _Function_base::_Base_manager<_Functor> _Base;
+
+     public:
+      static void
+      _M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
+      {
+ (*_Base::_M_get_pointer(__functor))(
+     std::forward<_ArgTypes>(__args)...);
+      }
+    };
+
+  template<typename _Class, typename _Member, typename _Res,
+    typename... _ArgTypes>
+    class _Function_handler<_Res(_ArgTypes...), _Member _Class::*>
+    : public _Function_handler<void(_ArgTypes...), _Member _Class::*>
+    {
+      typedef _Function_handler<void(_ArgTypes...), _Member _Class::*>
+ _Base;
+
+     public:
+      static _Res
+      _M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
+      {
+ return std::__invoke(_Base::_M_get_pointer(__functor)->__value,
+        std::forward<_ArgTypes>(__args)...);
+      }
+    };
+
+  template<typename _Class, typename _Member, typename... _ArgTypes>
+    class _Function_handler<void(_ArgTypes...), _Member _Class::*>
+    : public _Function_base::_Base_manager<
+   _Simple_type_wrapper< _Member _Class::* > >
+    {
+      typedef _Member _Class::* _Functor;
+      typedef _Simple_type_wrapper<_Functor> _Wrapper;
+      typedef _Function_base::_Base_manager<_Wrapper> _Base;
+
+    public:
+      static bool
+      _M_manager(_Any_data& __dest, const _Any_data& __source,
+   _Manager_operation __op)
+      {
+ switch (__op)
+   {
+
+   case __get_type_info:
+     __dest._M_access<const type_info*>() = &typeid(_Functor);
+     break;
+
+   case __get_functor_ptr:
+     __dest._M_access<_Functor*>() =
+       &_Base::_M_get_pointer(__source)->__value;
+     break;
+
+   default:
+     _Base::_M_manager(__dest, __source, __op);
+   }
+ return false;
+      }
+
+      static void
+      _M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
+      {
+ std::__invoke(_Base::_M_get_pointer(__functor)->__value,
+        std::forward<_ArgTypes>(__args)...);
+      }
+    };
+
+  template<typename _From, typename _To>
+    using __check_func_return_type
+      = __or_<is_void<_To>, is_same<_From, _To>, is_convertible<_From, _To>>;
+
+
+
+
+
+
+
+  template<typename _Res, typename... _ArgTypes>
+    class function<_Res(_ArgTypes...)>
+    : public _Maybe_unary_or_binary_function<_Res, _ArgTypes...>,
+      private _Function_base
+    {
+      template<typename _Func,
+        typename _Res2 = typename result_of<_Func&(_ArgTypes...)>::type>
+ struct _Callable : __check_func_return_type<_Res2, _Res> { };
+
+
+
+      template<typename _Tp>
+ struct _Callable<function, _Tp> : false_type { };
+
+      template<typename _Cond, typename _Tp>
+ using _Requires = typename enable_if<_Cond::value, _Tp>::type;
+
+    public:
+      typedef _Res result_type;
+
+
+
+
+
+
+
+      function() noexcept
+      : _Function_base() { }
+
+
+
+
+
+      function(nullptr_t) noexcept
+      : _Function_base() { }
+      function(const function& __x);
+      function(function&& __x) noexcept : _Function_base()
+      {
+ __x.swap(*this);
+      }
+      template<typename _Functor,
+        typename = _Requires<__not_<is_same<_Functor, function>>, void>,
+        typename = _Requires<_Callable<_Functor>, void>>
+ function(_Functor);
+      function&
+      operator=(const function& __x)
+      {
+ function(__x).swap(*this);
+ return *this;
+      }
+      function&
+      operator=(function&& __x) noexcept
+      {
+ function(std::move(__x)).swap(*this);
+ return *this;
+      }
+      function&
+      operator=(nullptr_t) noexcept
+      {
+ if (_M_manager)
+   {
+     _M_manager(_M_functor, _M_functor, __destroy_functor);
+     _M_manager = nullptr;
+     _M_invoker = nullptr;
+   }
+ return *this;
+      }
+      template<typename _Functor>
+ _Requires<_Callable<typename decay<_Functor>::type>, function&>
+ operator=(_Functor&& __f)
+ {
+   function(std::forward<_Functor>(__f)).swap(*this);
+   return *this;
+ }
+
+
+      template<typename _Functor>
+ function&
+ operator=(reference_wrapper<_Functor> __f) noexcept
+ {
+   function(__f).swap(*this);
+   return *this;
+ }
+      void swap(function& __x) noexcept
+      {
+ std::swap(_M_functor, __x._M_functor);
+ std::swap(_M_manager, __x._M_manager);
+ std::swap(_M_invoker, __x._M_invoker);
+      }
+      explicit operator bool() const noexcept
+      { return !_M_empty(); }
+      _Res operator()(_ArgTypes... __args) const;
+      const type_info& target_type() const noexcept;
+      template<typename _Functor> _Functor* target() noexcept;
+
+      template<typename _Functor> const _Functor* target() const noexcept;
+
+
+
+    private:
+      using _Invoker_type = _Res (*)(const _Any_data&, _ArgTypes&&...);
+      _Invoker_type _M_invoker;
+  };
+  template<typename _Res, typename... _ArgTypes>
+    function<_Res(_ArgTypes...)>::
+    function(const function& __x)
+    : _Function_base()
+    {
+      if (static_cast<bool>(__x))
+ {
+   __x._M_manager(_M_functor, __x._M_functor, __clone_functor);
+   _M_invoker = __x._M_invoker;
+   _M_manager = __x._M_manager;
+ }
+    }
+
+  template<typename _Res, typename... _ArgTypes>
+    template<typename _Functor, typename, typename>
+      function<_Res(_ArgTypes...)>::
+      function(_Functor __f)
+      : _Function_base()
+      {
+ typedef _Function_handler<_Res(_ArgTypes...), _Functor> _My_handler;
+
+ if (_My_handler::_M_not_empty_function(__f))
+   {
+     _My_handler::_M_init_functor(_M_functor, std::move(__f));
+     _M_invoker = &_My_handler::_M_invoke;
+     _M_manager = &_My_handler::_M_manager;
+   }
+      }
+
+  template<typename _Res, typename... _ArgTypes>
+    _Res
+    function<_Res(_ArgTypes...)>::
+    operator()(_ArgTypes... __args) const
+    {
+      if (_M_empty())
+ __throw_bad_function_call();
+      return _M_invoker(_M_functor, std::forward<_ArgTypes>(__args)...);
+    }
+
+
+  template<typename _Res, typename... _ArgTypes>
+    const type_info&
+    function<_Res(_ArgTypes...)>::
+    target_type() const noexcept
+    {
+      if (_M_manager)
+ {
+   _Any_data __typeinfo_result;
+   _M_manager(__typeinfo_result, _M_functor, __get_type_info);
+   return *__typeinfo_result._M_access<const type_info*>();
+ }
+      else
+ return typeid(void);
+    }
+
+  template<typename _Res, typename... _ArgTypes>
+    template<typename _Functor>
+      _Functor*
+      function<_Res(_ArgTypes...)>::
+      target() noexcept
+      {
+ const function* __const_this = this;
+ const _Functor* __func = __const_this->template target<_Functor>();
+ return const_cast<_Functor*>(__func);
+      }
+
+  template<typename _Res, typename... _ArgTypes>
+    template<typename _Functor>
+      const _Functor*
+      function<_Res(_ArgTypes...)>::
+      target() const noexcept
+      {
+ if (typeid(_Functor) == target_type() && _M_manager)
+   {
+     _Any_data __ptr;
+     _M_manager(__ptr, _M_functor, __get_functor_ptr);
+     return __ptr._M_access<const _Functor*>();
+   }
+ else
+   return nullptr;
+      }
+  template<typename _Res, typename... _Args>
+    inline bool
+    operator==(const function<_Res(_Args...)>& __f, nullptr_t) noexcept
+    { return !static_cast<bool>(__f); }
+
+
+  template<typename _Res, typename... _Args>
+    inline bool
+    operator==(nullptr_t, const function<_Res(_Args...)>& __f) noexcept
+    { return !static_cast<bool>(__f); }
+  template<typename _Res, typename... _Args>
+    inline bool
+    operator!=(const function<_Res(_Args...)>& __f, nullptr_t) noexcept
+    { return static_cast<bool>(__f); }
+
+
+  template<typename _Res, typename... _Args>
+    inline bool
+    operator!=(nullptr_t, const function<_Res(_Args...)>& __f) noexcept
+    { return static_cast<bool>(__f); }
+  template<typename _Res, typename... _Args>
+    inline void
+    swap(function<_Res(_Args...)>& __x, function<_Res(_Args...)>& __y) noexcept
+    { __x.swap(__y); }
+
+
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+
+  template<typename _MemFunPtr,
+    bool __is_mem_fn = is_member_function_pointer<_MemFunPtr>::value>
+    class _Mem_fn_base
+    : public _Mem_fn_traits<_MemFunPtr>::__maybe_type
+    {
+      using _Traits = _Mem_fn_traits<_MemFunPtr>;
+
+      using _Arity = typename _Traits::__arity;
+      using _Varargs = typename _Traits::__vararg;
+
+      template<typename _Func, typename... _BoundArgs>
+ friend struct _Bind_check_arity;
+
+      _MemFunPtr _M_pmf;
+
+    public:
+
+      using result_type = typename _Traits::__result_type;
+
+      explicit constexpr
+      _Mem_fn_base(_MemFunPtr __pmf) noexcept : _M_pmf(__pmf) { }
+
+      template<typename... _Args>
+ auto
+ operator()(_Args&&... __args) const
+ noexcept(noexcept(
+       std::__invoke(_M_pmf, std::forward<_Args>(__args)...)))
+ -> decltype(std::__invoke(_M_pmf, std::forward<_Args>(__args)...))
+ { return std::__invoke(_M_pmf, std::forward<_Args>(__args)...); }
+    };
+
+
+  template<typename _MemObjPtr>
+    class _Mem_fn_base<_MemObjPtr, false>
+    {
+      using _Arity = integral_constant<size_t, 0>;
+      using _Varargs = false_type;
+
+      template<typename _Func, typename... _BoundArgs>
+ friend struct _Bind_check_arity;
+
+      _MemObjPtr _M_pm;
+
+    public:
+      explicit constexpr
+      _Mem_fn_base(_MemObjPtr __pm) noexcept : _M_pm(__pm) { }
+
+      template<typename _Tp>
+ auto
+ operator()(_Tp&& __obj) const
+ noexcept(noexcept(std::__invoke(_M_pm, std::forward<_Tp>(__obj))))
+ -> decltype(std::__invoke(_M_pm, std::forward<_Tp>(__obj)))
+ { return std::__invoke(_M_pm, std::forward<_Tp>(__obj)); }
+    };
+
+  template<typename _MemberPointer>
+    struct _Mem_fn;
+
+  template<typename _Res, typename _Class>
+    struct _Mem_fn<_Res _Class::*>
+    : _Mem_fn_base<_Res _Class::*>
+    {
+      using _Mem_fn_base<_Res _Class::*>::_Mem_fn_base;
+    };
+  template<typename _Tp, typename _Class>
+    inline _Mem_fn<_Tp _Class::*>
+    mem_fn(_Tp _Class::* __pm) noexcept
+    {
+      return _Mem_fn<_Tp _Class::*>(__pm);
+    }
+  template<typename _Tp>
+    struct is_bind_expression
+    : public false_type { };
+  template<typename _Tp>
+    struct is_placeholder
+    : public integral_constant<int, 0>
+    { };
+  template<int _Num> struct _Placeholder { };
+
+
+
+
+
+  namespace placeholders
+  {
+
+
+
+
+    extern const _Placeholder<1> _1;
+    extern const _Placeholder<2> _2;
+    extern const _Placeholder<3> _3;
+    extern const _Placeholder<4> _4;
+    extern const _Placeholder<5> _5;
+    extern const _Placeholder<6> _6;
+    extern const _Placeholder<7> _7;
+    extern const _Placeholder<8> _8;
+    extern const _Placeholder<9> _9;
+    extern const _Placeholder<10> _10;
+    extern const _Placeholder<11> _11;
+    extern const _Placeholder<12> _12;
+    extern const _Placeholder<13> _13;
+    extern const _Placeholder<14> _14;
+    extern const _Placeholder<15> _15;
+    extern const _Placeholder<16> _16;
+    extern const _Placeholder<17> _17;
+    extern const _Placeholder<18> _18;
+    extern const _Placeholder<19> _19;
+    extern const _Placeholder<20> _20;
+    extern const _Placeholder<21> _21;
+    extern const _Placeholder<22> _22;
+    extern const _Placeholder<23> _23;
+    extern const _Placeholder<24> _24;
+    extern const _Placeholder<25> _25;
+    extern const _Placeholder<26> _26;
+    extern const _Placeholder<27> _27;
+    extern const _Placeholder<28> _28;
+    extern const _Placeholder<29> _29;
+  }
+
+
+
+
+
+
+  template<int _Num>
+    struct is_placeholder<_Placeholder<_Num> >
+    : public integral_constant<int, _Num>
+    { };
+
+  template<int _Num>
+    struct is_placeholder<const _Placeholder<_Num> >
+    : public integral_constant<int, _Num>
+    { };
+
+
+
+  template<std::size_t __i, typename _Tuple>
+    using _Safe_tuple_element_t
+      = typename enable_if<(__i < tuple_size<_Tuple>::value),
+      tuple_element<__i, _Tuple>>::type::type;
+  template<typename _Arg,
+    bool _IsBindExp = is_bind_expression<_Arg>::value,
+    bool _IsPlaceholder = (is_placeholder<_Arg>::value > 0)>
+    class _Mu;
+
+
+
+
+
+
+  template<typename _Tp>
+    class _Mu<reference_wrapper<_Tp>, false, false>
+    {
+    public:
+
+
+
+
+      template<typename _CVRef, typename _Tuple>
+ _Tp&
+ operator()(_CVRef& __arg, _Tuple&) const volatile
+ { return __arg.get(); }
+    };
+
+
+
+
+
+
+
+  template<typename _Arg>
+    class _Mu<_Arg, true, false>
+    {
+    public:
+      template<typename _CVArg, typename... _Args>
+ auto
+ operator()(_CVArg& __arg,
+     tuple<_Args...>& __tuple) const volatile
+ -> decltype(__arg(declval<_Args>()...))
+ {
+
+   typedef typename _Build_index_tuple<sizeof...(_Args)>::__type
+     _Indexes;
+   return this->__call(__arg, __tuple, _Indexes());
+ }
+
+    private:
+
+
+      template<typename _CVArg, typename... _Args, std::size_t... _Indexes>
+ auto
+ __call(_CVArg& __arg, tuple<_Args...>& __tuple,
+        const _Index_tuple<_Indexes...>&) const volatile
+ -> decltype(__arg(declval<_Args>()...))
+ {
+   return __arg(std::get<_Indexes>(std::move(__tuple))...);
+ }
+    };
+
+
+
+
+
+
+  template<typename _Arg>
+    class _Mu<_Arg, false, true>
+    {
+    public:
+      template<typename _Tuple>
+ _Safe_tuple_element_t<(is_placeholder<_Arg>::value - 1), _Tuple>&&
+ operator()(const volatile _Arg&, _Tuple& __tuple) const volatile
+ {
+   return
+     ::std::get<(is_placeholder<_Arg>::value - 1)>(std::move(__tuple));
+ }
+    };
+
+
+
+
+
+
+  template<typename _Arg>
+    class _Mu<_Arg, false, false>
+    {
+    public:
+      template<typename _CVArg, typename _Tuple>
+ _CVArg&&
+ operator()(_CVArg&& __arg, _Tuple&) const volatile
+ { return std::forward<_CVArg>(__arg); }
+    };
+
+
+  template<std::size_t _Ind, typename... _Tp>
+    inline auto
+    __volget(volatile tuple<_Tp...>& __tuple)
+    -> __tuple_element_t<_Ind, tuple<_Tp...>> volatile&
+    { return std::get<_Ind>(const_cast<tuple<_Tp...>&>(__tuple)); }
+
+
+  template<std::size_t _Ind, typename... _Tp>
+    inline auto
+    __volget(const volatile tuple<_Tp...>& __tuple)
+    -> __tuple_element_t<_Ind, tuple<_Tp...>> const volatile&
+    { return std::get<_Ind>(const_cast<const tuple<_Tp...>&>(__tuple)); }
+
+
+  template<typename _Signature>
+    struct _Bind;
+
+   template<typename _Functor, typename... _Bound_args>
+    class _Bind<_Functor(_Bound_args...)>
+    : public _Weak_result_type<_Functor>
+    {
+      typedef typename _Build_index_tuple<sizeof...(_Bound_args)>::__type
+ _Bound_indexes;
+
+      _Functor _M_f;
+      tuple<_Bound_args...> _M_bound_args;
+
+
+      template<typename _Result, typename... _Args, std::size_t... _Indexes>
+ _Result
+ __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
+ {
+   return std::__invoke(_M_f,
+       _Mu<_Bound_args>()(std::get<_Indexes>(_M_bound_args), __args)...
+       );
+ }
+
+
+      template<typename _Result, typename... _Args, std::size_t... _Indexes>
+ _Result
+ __call_c(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
+ {
+   return std::__invoke(_M_f,
+       _Mu<_Bound_args>()(std::get<_Indexes>(_M_bound_args), __args)...
+       );
+ }
+
+
+      template<typename _Result, typename... _Args, std::size_t... _Indexes>
+ _Result
+ __call_v(tuple<_Args...>&& __args,
+   _Index_tuple<_Indexes...>) volatile
+ {
+   return std::__invoke(_M_f,
+       _Mu<_Bound_args>()(__volget<_Indexes>(_M_bound_args), __args)...
+       );
+ }
+
+
+      template<typename _Result, typename... _Args, std::size_t... _Indexes>
+ _Result
+ __call_c_v(tuple<_Args...>&& __args,
+     _Index_tuple<_Indexes...>) const volatile
+ {
+   return std::__invoke(_M_f,
+       _Mu<_Bound_args>()(__volget<_Indexes>(_M_bound_args), __args)...
+       );
+ }
+
+      template<typename _BoundArg, typename _CallArgs>
+ using _Mu_type = decltype(
+     _Mu<typename remove_cv<_BoundArg>::type>()(
+       std::declval<_BoundArg&>(), std::declval<_CallArgs&>()) );
+
+      template<typename _Fn, typename _CallArgs, typename... _BArgs>
+ using _Res_type_impl
+   = typename result_of< _Fn&(_Mu_type<_BArgs, _CallArgs>&&...) >::type;
+
+      template<typename _CallArgs>
+ using _Res_type = _Res_type_impl<_Functor, _CallArgs, _Bound_args...>;
+
+      template<typename _CallArgs>
+ using __dependent = typename
+   enable_if<bool(tuple_size<_CallArgs>::value+1), _Functor>::type;
+
+      template<typename _CallArgs, template<class> class __cv_quals>
+ using _Res_type_cv = _Res_type_impl<
+   typename __cv_quals<__dependent<_CallArgs>>::type,
+   _CallArgs,
+   typename __cv_quals<_Bound_args>::type...>;
+
+     public:
+      template<typename... _Args>
+ explicit _Bind(const _Functor& __f, _Args&&... __args)
+ : _M_f(__f), _M_bound_args(std::forward<_Args>(__args)...)
+ { }
+
+      template<typename... _Args>
+ explicit _Bind(_Functor&& __f, _Args&&... __args)
+ : _M_f(std::move(__f)), _M_bound_args(std::forward<_Args>(__args)...)
+ { }
+
+      _Bind(const _Bind&) = default;
+
+      _Bind(_Bind&& __b)
+      : _M_f(std::move(__b._M_f)), _M_bound_args(std::move(__b._M_bound_args))
+      { }
+
+
+      template<typename... _Args,
+        typename _Result = _Res_type<tuple<_Args...>>>
+ _Result
+ operator()(_Args&&... __args)
+ {
+   return this->__call<_Result>(
+       std::forward_as_tuple(std::forward<_Args>(__args)...),
+       _Bound_indexes());
+ }
+
+
+      template<typename... _Args,
+        typename _Result = _Res_type_cv<tuple<_Args...>, add_const>>
+ _Result
+ operator()(_Args&&... __args) const
+ {
+   return this->__call_c<_Result>(
+       std::forward_as_tuple(std::forward<_Args>(__args)...),
+       _Bound_indexes());
+ }
+      template<typename... _Args,
+        typename _Result = _Res_type_cv<tuple<_Args...>, add_volatile>>
+
+ _Result
+ operator()(_Args&&... __args) volatile
+ {
+   return this->__call_v<_Result>(
+       std::forward_as_tuple(std::forward<_Args>(__args)...),
+       _Bound_indexes());
+ }
+
+
+      template<typename... _Args,
+        typename _Result = _Res_type_cv<tuple<_Args...>, add_cv>>
+
+ _Result
+ operator()(_Args&&... __args) const volatile
+ {
+   return this->__call_c_v<_Result>(
+       std::forward_as_tuple(std::forward<_Args>(__args)...),
+       _Bound_indexes());
+ }
+    };
+
+
+  template<typename _Result, typename _Signature>
+    struct _Bind_result;
+
+  template<typename _Result, typename _Functor, typename... _Bound_args>
+    class _Bind_result<_Result, _Functor(_Bound_args...)>
+    {
+      typedef typename _Build_index_tuple<sizeof...(_Bound_args)>::__type
+ _Bound_indexes;
+
+      _Functor _M_f;
+      tuple<_Bound_args...> _M_bound_args;
+
+
+      template<typename _Res>
+ using __enable_if_void
+   = typename enable_if<is_void<_Res>{}>::type;
+
+      template<typename _Res>
+ using __disable_if_void
+   = typename enable_if<!is_void<_Res>{}, _Result>::type;
+
+
+      template<typename _Res, typename... _Args, std::size_t... _Indexes>
+ __disable_if_void<_Res>
+ __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
+ {
+   return std::__invoke(_M_f, _Mu<_Bound_args>()
+        (std::get<_Indexes>(_M_bound_args), __args)...);
+ }
+
+
+      template<typename _Res, typename... _Args, std::size_t... _Indexes>
+ __enable_if_void<_Res>
+ __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)
+ {
+   std::__invoke(_M_f, _Mu<_Bound_args>()
+        (std::get<_Indexes>(_M_bound_args), __args)...);
+ }
+
+
+      template<typename _Res, typename... _Args, std::size_t... _Indexes>
+ __disable_if_void<_Res>
+ __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
+ {
+   return std::__invoke(_M_f, _Mu<_Bound_args>()
+        (std::get<_Indexes>(_M_bound_args), __args)...);
+ }
+
+
+      template<typename _Res, typename... _Args, std::size_t... _Indexes>
+ __enable_if_void<_Res>
+ __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const
+ {
+   std::__invoke(_M_f, _Mu<_Bound_args>()
+        (std::get<_Indexes>(_M_bound_args), __args)...);
+ }
+
+
+      template<typename _Res, typename... _Args, std::size_t... _Indexes>
+ __disable_if_void<_Res>
+ __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) volatile
+ {
+   return std::__invoke(_M_f, _Mu<_Bound_args>()
+        (__volget<_Indexes>(_M_bound_args), __args)...);
+ }
+
+
+      template<typename _Res, typename... _Args, std::size_t... _Indexes>
+ __enable_if_void<_Res>
+ __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) volatile
+ {
+   std::__invoke(_M_f, _Mu<_Bound_args>()
+        (__volget<_Indexes>(_M_bound_args), __args)...);
+ }
+
+
+      template<typename _Res, typename... _Args, std::size_t... _Indexes>
+ __disable_if_void<_Res>
+ __call(tuple<_Args...>&& __args,
+        _Index_tuple<_Indexes...>) const volatile
+ {
+   return std::__invoke(_M_f, _Mu<_Bound_args>()
+        (__volget<_Indexes>(_M_bound_args), __args)...);
+ }
+
+
+      template<typename _Res, typename... _Args, std::size_t... _Indexes>
+ __enable_if_void<_Res>
+ __call(tuple<_Args...>&& __args,
+        _Index_tuple<_Indexes...>) const volatile
+ {
+   std::__invoke(_M_f, _Mu<_Bound_args>()
+        (__volget<_Indexes>(_M_bound_args), __args)...);
+ }
+
+    public:
+      typedef _Result result_type;
+
+      template<typename... _Args>
+ explicit _Bind_result(const _Functor& __f, _Args&&... __args)
+ : _M_f(__f), _M_bound_args(std::forward<_Args>(__args)...)
+ { }
+
+      template<typename... _Args>
+ explicit _Bind_result(_Functor&& __f, _Args&&... __args)
+ : _M_f(std::move(__f)), _M_bound_args(std::forward<_Args>(__args)...)
+ { }
+
+      _Bind_result(const _Bind_result&) = default;
+
+      _Bind_result(_Bind_result&& __b)
+      : _M_f(std::move(__b._M_f)), _M_bound_args(std::move(__b._M_bound_args))
+      { }
+
+
+      template<typename... _Args>
+ result_type
+ operator()(_Args&&... __args)
+ {
+   return this->__call<_Result>(
+       std::forward_as_tuple(std::forward<_Args>(__args)...),
+       _Bound_indexes());
+ }
+
+
+      template<typename... _Args>
+ result_type
+ operator()(_Args&&... __args) const
+ {
+   return this->__call<_Result>(
+       std::forward_as_tuple(std::forward<_Args>(__args)...),
+       _Bound_indexes());
+ }
+
+
+      template<typename... _Args>
+
+ result_type
+ operator()(_Args&&... __args) volatile
+ {
+   return this->__call<_Result>(
+       std::forward_as_tuple(std::forward<_Args>(__args)...),
+       _Bound_indexes());
+ }
+
+
+      template<typename... _Args>
+
+ result_type
+ operator()(_Args&&... __args) const volatile
+ {
+   return this->__call<_Result>(
+       std::forward_as_tuple(std::forward<_Args>(__args)...),
+       _Bound_indexes());
+ }
+    };
+
+
+
+
+
+
+  template<typename _Signature>
+    struct is_bind_expression<_Bind<_Signature> >
+    : public true_type { };
+
+
+
+
+
+  template<typename _Signature>
+    struct is_bind_expression<const _Bind<_Signature> >
+    : public true_type { };
+
+
+
+
+
+  template<typename _Signature>
+    struct is_bind_expression<volatile _Bind<_Signature> >
+    : public true_type { };
+
+
+
+
+
+  template<typename _Signature>
+    struct is_bind_expression<const volatile _Bind<_Signature>>
+    : public true_type { };
+
+
+
+
+
+  template<typename _Result, typename _Signature>
+    struct is_bind_expression<_Bind_result<_Result, _Signature>>
+    : public true_type { };
+
+
+
+
+
+  template<typename _Result, typename _Signature>
+    struct is_bind_expression<const _Bind_result<_Result, _Signature>>
+    : public true_type { };
+
+
+
+
+
+  template<typename _Result, typename _Signature>
+    struct is_bind_expression<volatile _Bind_result<_Result, _Signature>>
+    : public true_type { };
+
+
+
+
+
+  template<typename _Result, typename _Signature>
+    struct is_bind_expression<const volatile _Bind_result<_Result, _Signature>>
+    : public true_type { };
+
+  template<typename _Func, typename... _BoundArgs>
+    struct _Bind_check_arity { };
+
+  template<typename _Ret, typename... _Args, typename... _BoundArgs>
+    struct _Bind_check_arity<_Ret (*)(_Args...), _BoundArgs...>
+    {
+      static_assert(sizeof...(_BoundArgs) == sizeof...(_Args),
+                   "Wrong number of arguments for function");
+    };
+
+  template<typename _Ret, typename... _Args, typename... _BoundArgs>
+    struct _Bind_check_arity<_Ret (*)(_Args......), _BoundArgs...>
+    {
+      static_assert(sizeof...(_BoundArgs) >= sizeof...(_Args),
+                   "Wrong number of arguments for function");
+    };
+
+  template<typename _Tp, typename _Class, typename... _BoundArgs>
+    struct _Bind_check_arity<_Tp _Class::*, _BoundArgs...>
+    {
+      using _Arity = typename _Mem_fn<_Tp _Class::*>::_Arity;
+      using _Varargs = typename _Mem_fn<_Tp _Class::*>::_Varargs;
+      static_assert(_Varargs::value
+      ? sizeof...(_BoundArgs) >= _Arity::value + 1
+      : sizeof...(_BoundArgs) == _Arity::value + 1,
+      "Wrong number of arguments for pointer-to-member");
+    };
+
+
+
+
+  template<typename _Tp, typename _Tp2 = typename decay<_Tp>::type>
+    using __is_socketlike = __or_<is_integral<_Tp2>, is_enum<_Tp2>>;
+
+  template<bool _SocketLike, typename _Func, typename... _BoundArgs>
+    struct _Bind_helper
+    : _Bind_check_arity<typename decay<_Func>::type, _BoundArgs...>
+    {
+      typedef typename decay<_Func>::type __func_type;
+      typedef _Bind<__func_type(typename decay<_BoundArgs>::type...)> type;
+    };
+
+
+
+
+  template<typename _Func, typename... _BoundArgs>
+    struct _Bind_helper<true, _Func, _BoundArgs...>
+    { };
+
+
+
+
+
+  template<typename _Func, typename... _BoundArgs>
+    inline typename
+    _Bind_helper<__is_socketlike<_Func>::value, _Func, _BoundArgs...>::type
+    bind(_Func&& __f, _BoundArgs&&... __args)
+    {
+      typedef _Bind_helper<false, _Func, _BoundArgs...> __helper_type;
+      return typename __helper_type::type(std::forward<_Func>(__f),
+       std::forward<_BoundArgs>(__args)...);
+    }
+
+  template<typename _Result, typename _Func, typename... _BoundArgs>
+    struct _Bindres_helper
+    : _Bind_check_arity<typename decay<_Func>::type, _BoundArgs...>
+    {
+      typedef typename decay<_Func>::type __functor_type;
+      typedef _Bind_result<_Result,
+      __functor_type(typename decay<_BoundArgs>::type...)>
+ type;
+    };
+
+
+
+
+
+  template<typename _Result, typename _Func, typename... _BoundArgs>
+    inline
+    typename _Bindres_helper<_Result, _Func, _BoundArgs...>::type
+    bind(_Func&& __f, _BoundArgs&&... __args)
+    {
+      typedef _Bindres_helper<_Result, _Func, _BoundArgs...> __helper_type;
+      return typename __helper_type::type(std::forward<_Func>(__f),
+       std::forward<_BoundArgs>(__args)...);
+    }
+
+
+
+  template<typename _Fn>
+    class _Not_fn
+    {
+      template<typename _Fn2, typename... _Args>
+ using __inv_res_t = typename __invoke_result<_Fn2, _Args...>::type;
+
+      template<typename _Tp>
+ static decltype(!std::declval<_Tp>())
+ _S_not() noexcept(noexcept(!std::declval<_Tp>()));
+
+    public:
+      template<typename _Fn2>
+ _Not_fn(_Fn2&& __fn, int)
+ : _M_fn(std::forward<_Fn2>(__fn)) { }
+
+      _Not_fn(const _Not_fn& __fn) = default;
+      _Not_fn(_Not_fn&& __fn) = default;
+      ~_Not_fn() = default;
+      template<typename... _Args> decltype(_S_not<__inv_res_t<_Fn &, _Args...>>()) operator()(_Args&&... __args) & noexcept(noexcept(_S_not<__inv_res_t<_Fn &, _Args...>>())) { return !std::__invoke(std::forward< _Fn & >(_M_fn), std::forward<_Args>(__args)...); }
+      template<typename... _Args> decltype(_S_not<__inv_res_t<_Fn const &, _Args...>>()) operator()(_Args&&... __args) const & noexcept(noexcept(_S_not<__inv_res_t<_Fn const &, _Args...>>())) { return !std::__invoke(std::forward< _Fn const & >(_M_fn), std::forward<_Args>(__args)...); }
+      template<typename... _Args> decltype(_S_not<__inv_res_t<_Fn &&, _Args...>>()) operator()(_Args&&... __args) && noexcept(noexcept(_S_not<__inv_res_t<_Fn &&, _Args...>>())) { return !std::__invoke(std::forward< _Fn && >(_M_fn), std::forward<_Args>(__args)...); }
+      template<typename... _Args> decltype(_S_not<__inv_res_t<_Fn const &&, _Args...>>()) operator()(_Args&&... __args) const && noexcept(noexcept(_S_not<__inv_res_t<_Fn const &&, _Args...>>())) { return !std::__invoke(std::forward< _Fn const && >(_M_fn), std::forward<_Args>(__args)...); }
+
+
+    private:
+      _Fn _M_fn;
+    };
+
+  template<typename _Tp, typename _Pred>
+    struct __is_byte_like : false_type { };
+
+  template<typename _Tp>
+    struct __is_byte_like<_Tp, equal_to<_Tp>>
+    : __bool_constant<sizeof(_Tp) == 1 && is_integral<_Tp>::value> { };
+
+  template<typename _Tp>
+    struct __is_byte_like<_Tp, equal_to<void>>
+    : __bool_constant<sizeof(_Tp) == 1 && is_integral<_Tp>::value> { };
+
+}
+
+namespace boost {
+template<class OptionalPointee>
+inline
+bool equal_pointees ( OptionalPointee const& x, OptionalPointee const& y )
+{
+  return (!x) != (!y) ? false : ( !x ? true : (*x) == (*y) ) ;
+}
+
+template<class OptionalPointee>
+struct equal_pointees_t : std::binary_function<OptionalPointee,OptionalPointee,bool>
+{
+  bool operator() ( OptionalPointee const& x, OptionalPointee const& y ) const
+    { return equal_pointees(x,y) ; }
+} ;
+template<class OptionalPointee>
+inline
+bool less_pointees ( OptionalPointee const& x, OptionalPointee const& y )
+{
+  return !y ? false : ( !x ? true : (*x) < (*y) ) ;
+}
+
+template<class OptionalPointee>
+struct less_pointees_t : std::binary_function<OptionalPointee,OptionalPointee,bool>
+{
+  bool operator() ( OptionalPointee const& x, OptionalPointee const& y ) const
+    { return less_pointees(x,y) ; }
+} ;
+
+}
+
+namespace boost {
+
+template<class T> class optional ;
+
+
+template<class T> void swap ( optional<T>& , optional<T>& ) ;
+
+template<class T> struct optional_swap_should_use_default_constructor ;
+
+
+
+template<class T> class optional<T&> ;
+
+template<class T> void swap ( optional<T&>& , optional<T&>& ) noexcept;
+
+
+
+}
+namespace boost_optional_detail
+{
+  template <class T, class Factory>
+  inline void construct(Factory const& factory, void* address)
+  {
+    factory.template apply<T>(address);
+  }
+}
+
+namespace boost
+{
+  class in_place_factory_base ;
+  class typed_in_place_factory_base ;
+}
+namespace boost {
+
+namespace optional_detail {
+
+
+
+
+template <class T>
+class aligned_storage
+{
+
+    union
+
+
+    __attribute__((__may_alias__))
+
+    dummy_u
+    {
+        char data[ sizeof(T) ];
+        typename type_with_alignment<
+          ::boost::alignment_of<T>::value >::type aligner_;
+    } dummy_ ;
+
+  public:
+
+
+    void const* address() const { return &dummy_; }
+    void * address() { return &dummy_; }
+
+
+
+
+
+
+
+ T const* ptr_ref() const
+ {
+  union { void const* ap_pvoid; T const* as_ptype; } caster = { address() };
+  return caster.as_ptype;
+ }
+ T * ptr_ref()
+ {
+  union { void* ap_pvoid; T* as_ptype; } caster = { address() };
+  return caster.as_ptype;
+ }
+
+
+
+
+
+ T const& ref() const { return *ptr_ref(); }
+ T & ref() { return *ptr_ref(); }
+
+} ;
+
+}
+}
+
+
+
+
+namespace boost {
+
+namespace optional_detail {
+
+struct optional_tag {} ;
+
+
+template<class T>
+class optional_base : public optional_tag
+{
+  private :
+
+    typedef aligned_storage<T> storage_type ;
+    typedef optional_base<T> this_type ;
+
+  protected :
+
+    typedef T value_type ;
+
+  protected:
+    typedef T & reference_type ;
+    typedef T const& reference_const_type ;
+
+    typedef T && rval_reference_type ;
+    typedef T && reference_type_of_temporary_wrapper ;
+
+    typedef T * pointer_type ;
+    typedef T const* pointer_const_type ;
+    typedef T const& argument_type ;
+
+
+
+    optional_base()
+      :
+      m_initialized(false) {}
+
+
+
+    optional_base ( none_t )
+      :
+      m_initialized(false) {}
+
+
+
+    optional_base ( argument_type val )
+      :
+      m_initialized(false)
+    {
+        construct(val);
+    }
+
+
+
+
+    optional_base ( rval_reference_type val )
+      :
+      m_initialized(false)
+    {
+      construct( boost::move(val) );
+    }
+
+
+
+
+    optional_base ( bool cond, argument_type val )
+      :
+      m_initialized(false)
+    {
+      if ( cond )
+        construct(val);
+    }
+
+
+
+    optional_base ( optional_base const& rhs )
+      :
+      m_initialized(false)
+    {
+      if ( rhs.is_initialized() )
+        construct(rhs.get_impl());
+    }
+
+
+
+
+    optional_base ( optional_base&& rhs )
+      :
+      m_initialized(false)
+    {
+      if ( rhs.is_initialized() )
+        construct( boost::move(rhs.get_impl()) );
+    }
+
+
+
+
+    template<class Expr, class PtrExpr>
+    explicit optional_base ( Expr&& expr, PtrExpr const* tag )
+      :
+      m_initialized(false)
+    {
+      construct(boost::forward<Expr>(expr),tag);
+    }
+    ~optional_base() { destroy() ; }
+
+
+    void assign ( optional_base const& rhs )
+    {
+      if (is_initialized())
+      {
+        if ( rhs.is_initialized() )
+             assign_value(rhs.get_impl());
+        else destroy();
+      }
+      else
+      {
+        if ( rhs.is_initialized() )
+          construct(rhs.get_impl());
+      }
+    }
+
+
+
+    void assign ( optional_base&& rhs )
+    {
+      if (is_initialized())
+      {
+        if ( rhs.is_initialized() )
+             assign_value( boost::move(rhs.get_impl()) );
+        else destroy();
+      }
+      else
+      {
+        if ( rhs.is_initialized() )
+          construct(boost::move(rhs.get_impl()));
+      }
+    }
+
+
+
+    template<class U>
+    void assign ( optional<U> const& rhs )
+    {
+      if (is_initialized())
+      {
+        if ( rhs.is_initialized() )
+
+          assign_value( rhs.get() );
+
+
+
+
+        else destroy();
+      }
+      else
+      {
+        if ( rhs.is_initialized() )
+
+          construct(rhs.get());
+
+
+
+      }
+    }
+
+
+
+    template<class U>
+    void assign ( optional<U>&& rhs )
+    {
+      typedef typename optional<U>::rval_reference_type ref_type;
+      if (is_initialized())
+      {
+        if ( rhs.is_initialized() )
+             assign_value( static_cast<ref_type>(rhs.get()) );
+        else destroy();
+      }
+      else
+      {
+        if ( rhs.is_initialized() )
+          construct(static_cast<ref_type>(rhs.get()));
+      }
+    }
+
+
+
+    void assign ( argument_type val )
+    {
+      if (is_initialized())
+           assign_value(val);
+      else construct(val);
+    }
+
+
+
+    void assign ( rval_reference_type val )
+    {
+      if (is_initialized())
+           assign_value( boost::move(val) );
+      else construct( boost::move(val) );
+    }
+
+
+
+
+    void assign ( none_t ) noexcept { destroy(); }
+
+
+
+
+    template<class Expr, class ExprPtr>
+    void assign_expr ( Expr&& expr, ExprPtr const* tag )
+    {
+      if (is_initialized())
+        assign_expr_to_initialized(boost::forward<Expr>(expr),tag);
+      else construct(boost::forward<Expr>(expr),tag);
+    }
+  public :
+
+
+
+    void reset() noexcept { destroy(); }
+
+
+    void reset ( argument_type val ) { assign(val); }
+
+
+
+
+    pointer_const_type get_ptr() const { return m_initialized ? get_ptr_impl() : 0 ; }
+    pointer_type get_ptr() { return m_initialized ? get_ptr_impl() : 0 ; }
+
+    bool is_initialized() const { return m_initialized ; }
+
+  protected :
+
+    void construct ( argument_type val )
+     {
+       ::new (m_storage.address()) value_type(val) ;
+       m_initialized = true ;
+     }
+
+
+    void construct ( rval_reference_type val )
+     {
+       ::new (m_storage.address()) value_type( boost::move(val) ) ;
+       m_initialized = true ;
+     }
+
+
+
+
+
+
+    template<class... Args>
+    void emplace_assign ( Args&&... args )
+     {
+       destroy();
+       ::new (m_storage.address()) value_type( boost::forward<Args>(args)... );
+       m_initialized = true ;
+     }
+    template<class Expr>
+    void construct ( Expr&& factory, in_place_factory_base const* )
+     {
+       boost_optional_detail::construct<value_type>(factory, m_storage.address());
+       m_initialized = true ;
+     }
+
+
+    template<class Expr>
+    void construct ( Expr&& factory, typed_in_place_factory_base const* )
+     {
+       factory.apply(m_storage.address()) ;
+       m_initialized = true ;
+     }
+
+    template<class Expr>
+    void assign_expr_to_initialized ( Expr&& factory, in_place_factory_base const* tag )
+     {
+       destroy();
+       construct(factory,tag);
+     }
+
+
+    template<class Expr>
+    void assign_expr_to_initialized ( Expr&& factory, typed_in_place_factory_base const* tag )
+     {
+       destroy();
+       construct(factory,tag);
+     }
+    template<class Expr>
+    void construct ( Expr&& expr, void const* )
+    {
+      new (m_storage.address()) value_type(boost::forward<Expr>(expr)) ;
+      m_initialized = true ;
+    }
+
+
+
+
+
+    template<class Expr>
+    void assign_expr_to_initialized ( Expr&& expr, void const* )
+    {
+      assign_value( boost::forward<Expr>(expr) );
+    }
+    void assign_value ( argument_type val ) { get_impl() = val; }
+
+    void assign_value ( rval_reference_type val ) { get_impl() = static_cast<rval_reference_type>(val); }
+
+
+    void destroy()
+    {
+      if ( m_initialized )
+        destroy_impl() ;
+    }
+
+    reference_const_type get_impl() const { return m_storage.ref() ; }
+    reference_type get_impl() { return m_storage.ref() ; }
+
+    pointer_const_type get_ptr_impl() const { return m_storage.ptr_ref(); }
+    pointer_type get_ptr_impl() { return m_storage.ptr_ref(); }
+
+  private :
+
+
+
+
+    void destroy_impl ( ) { m_storage.ref().T::~T() ; m_initialized = false ; }
+
+
+    bool m_initialized ;
+    storage_type m_storage ;
+} ;
+
+
+template <typename U>
+struct is_optional_related
+  : boost::conditional< boost::is_base_of<optional_detail::optional_tag, typename boost::decay<U>::type>::value
+                     || boost::is_same<typename boost::decay<U>::type, none_t>::value,
+    boost::true_type, boost::false_type>::type
+{};
+
+
+
+
+
+template <typename T, typename U>
+struct is_convertible_to_T_or_factory
+  : boost::conditional< boost::is_base_of<boost::in_place_factory_base, typename boost::decay<U>::type>::value
+                     || boost::is_base_of<boost::typed_in_place_factory_base, typename boost::decay<U>::type>::value
+                     || boost::is_constructible<T, U&&>::value
+                      , boost::true_type, boost::false_type>::type
+{};
+template <typename T, typename U>
+struct is_optional_val_init_candidate
+  : boost::conditional< !is_optional_related<U>::value && is_convertible_to_T_or_factory<T, U>::value
+                      , boost::true_type, boost::false_type>::type
+{};
+
+}
+
+template<class T>
+class optional : public optional_detail::optional_base<T>
+{
+    typedef optional_detail::optional_base<T> base ;
+
+  public :
+
+    typedef optional<T> this_type ;
+
+    typedef typename base::value_type value_type ;
+    typedef typename base::reference_type reference_type ;
+    typedef typename base::reference_const_type reference_const_type ;
+
+    typedef typename base::rval_reference_type rval_reference_type ;
+    typedef typename base::reference_type_of_temporary_wrapper reference_type_of_temporary_wrapper ;
+
+    typedef typename base::pointer_type pointer_type ;
+    typedef typename base::pointer_const_type pointer_const_type ;
+    typedef typename base::argument_type argument_type ;
+
+
+
+    optional() noexcept : base() {}
+
+
+
+    optional( none_t none_ ) noexcept : base(none_) {}
+
+
+
+    optional ( argument_type val ) : base(val) {}
+
+
+
+
+    optional ( rval_reference_type val ) : base( boost::forward<T>(val) )
+      {}
+
+
+
+
+    optional ( bool cond, argument_type val ) : base(cond,val) {}
+
+
+
+
+
+
+    template<class U>
+    explicit optional ( optional<U> const& rhs )
+      :
+      base()
+    {
+      if ( rhs.is_initialized() )
+        this->construct(rhs.get());
+    }
+
+
+
+
+
+    template<class U>
+    explicit optional ( optional<U> && rhs )
+      :
+      base()
+    {
+      if ( rhs.is_initialized() )
+        this->construct( boost::move(rhs.get()) );
+    }
+  template<class Expr>
+  explicit optional ( Expr&& expr,
+                      typename boost::enable_if< optional_detail::is_optional_val_init_candidate<T, Expr> >::type* = 0
+  )
+    : base(boost::forward<Expr>(expr),boost::addressof(expr))
+    {}
+    optional ( optional const& rhs ) : base( static_cast<base const&>(rhs) ) {}
+
+
+
+
+ optional ( optional && rhs )
+   noexcept((::boost::is_nothrow_move_constructible<T>::value))
+   : base( boost::move(rhs) )
+ {}
+    template<class Expr>
+    typename boost::enable_if<optional_detail::is_optional_val_init_candidate<T, Expr>, optional&>::type
+    operator= ( Expr&& expr )
+      {
+        this->assign_expr(boost::forward<Expr>(expr),boost::addressof(expr));
+        return *this ;
+      }
+    template<class U>
+    optional& operator= ( optional<U> const& rhs )
+      {
+        this->assign(rhs);
+        return *this ;
+      }
+
+
+
+
+
+    template<class U>
+    optional& operator= ( optional<U> && rhs )
+      {
+        this->assign(boost::move(rhs));
+        return *this ;
+      }
+
+
+
+
+
+    optional& operator= ( optional const& rhs )
+      {
+        this->assign( static_cast<base const&>(rhs) ) ;
+        return *this ;
+      }
+
+
+
+    optional& operator= ( optional && rhs )
+   noexcept((::boost::is_nothrow_move_constructible<T>::value && ::boost::is_nothrow_move_assignable<T>::value))
+      {
+        this->assign( static_cast<base &&>(rhs) ) ;
+        return *this ;
+      }
+
+
+
+
+    optional& operator= ( argument_type val )
+      {
+        this->assign( val ) ;
+        return *this ;
+      }
+
+
+
+    optional& operator= ( rval_reference_type val )
+      {
+        this->assign( boost::move(val) ) ;
+        return *this ;
+      }
+
+
+
+
+
+    optional& operator= ( none_t none_ ) noexcept
+      {
+        this->assign( none_ ) ;
+        return *this ;
+      }
+
+
+
+
+    template<class... Args>
+    void emplace ( Args&&... args )
+     {
+       this->emplace_assign( boost::forward<Args>(args)... );
+     }
+    void swap( optional & arg )
+   noexcept((::boost::is_nothrow_move_constructible<T>::value && ::boost::is_nothrow_move_assignable<T>::value))
+      {
+
+        boost::swap(*this, arg);
+      }
+
+
+
+
+
+    reference_const_type get() const { (static_cast <bool> (this->is_initialized()) ? void (0) : __assert_fail ("this->is_initialized()", "/usr/include/boost/optional/optional.hpp", 867, __extension__ __PRETTY_FUNCTION__)) ; return this->get_impl(); }
+    reference_type get() { (static_cast <bool> (this->is_initialized()) ? void (0) : __assert_fail ("this->is_initialized()", "/usr/include/boost/optional/optional.hpp", 868, __extension__ __PRETTY_FUNCTION__)) ; return this->get_impl(); }
+
+
+    reference_const_type get_value_or ( reference_const_type v ) const { return this->is_initialized() ? get() : v ; }
+    reference_type get_value_or ( reference_type v ) { return this->is_initialized() ? get() : v ; }
+
+
+
+
+    pointer_const_type operator->() const { (static_cast <bool> (this->is_initialized()) ? void (0) : __assert_fail ("this->is_initialized()", "/usr/include/boost/optional/optional.hpp", 877, __extension__ __PRETTY_FUNCTION__)) ; return this->get_ptr_impl() ; }
+    pointer_type operator->() { (static_cast <bool> (this->is_initialized()) ? void (0) : __assert_fail ("this->is_initialized()", "/usr/include/boost/optional/optional.hpp", 878, __extension__ __PRETTY_FUNCTION__)) ; return this->get_ptr_impl() ; }
+
+
+
+
+
+    reference_const_type operator *() const& { return this->get() ; }
+    reference_type operator *() & { return this->get() ; }
+    reference_type_of_temporary_wrapper operator *() && { return boost::move(this->get()) ; }
+
+
+
+
+
+
+    reference_const_type value() const&
+      {
+        if (this->is_initialized())
+          return this->get() ;
+        else
+          throw_exception(bad_optional_access());
+      }
+
+    reference_type value() &
+      {
+        if (this->is_initialized())
+          return this->get() ;
+        else
+          throw_exception(bad_optional_access());
+      }
+
+    reference_type_of_temporary_wrapper value() &&
+      {
+        if (this->is_initialized())
+          return boost::move(this->get()) ;
+        else
+          throw_exception(bad_optional_access());
+      }
+    template <class U>
+    value_type value_or ( U&& v ) const&
+      {
+        if (this->is_initialized())
+          return get();
+        else
+          return boost::forward<U>(v);
+      }
+
+    template <class U>
+    value_type value_or ( U&& v ) &&
+      {
+        if (this->is_initialized())
+          return boost::move(get());
+        else
+          return boost::forward<U>(v);
+      }
+    template <typename F>
+    value_type value_or_eval ( F f ) const&
+      {
+        if (this->is_initialized())
+          return get();
+        else
+          return f();
+      }
+
+    template <typename F>
+    value_type value_or_eval ( F f ) &&
+      {
+        if (this->is_initialized())
+          return boost::move(get());
+        else
+          return f();
+      }
+    bool operator!() const noexcept { return !this->is_initialized() ; }
+
+    inline __attribute__ ((__always_inline__)) explicit operator bool () const noexcept { return !this->operator! (); }
+} ;
+
+}
+
+
+
+namespace boost {
+
+
+template<class T>
+class optional<T&&>
+{
+  static_assert(sizeof(T) == 0, "Optional rvalue references are illegal.");
+} ;
+
+
+}
+
+
+namespace boost {
+
+namespace detail {
+
+
+
+template <class From>
+void prevent_binding_rvalue()
+{
+
+    static_assert(boost::is_lvalue_reference<From>::value, "binding rvalue references to optional lvalue references is disallowed")
+                                                                                                    ;
+
+}
+
+template <class T>
+typename boost::remove_reference<T>::type& forward_reference(T&& r)
+{
+    static_assert(boost::is_lvalue_reference<T>::value, "binding rvalue references to optional lvalue references is disallowed")
+                                                                                                    ;
+    return boost::forward<T>(r);
+}
+
+
+
+template <class From>
+void prevent_assignment_from_false_const_integral()
+{
+}
+
+template <class T>
+struct is_optional_
+{
+  static const bool value = false;
+};
+
+template <class U>
+struct is_optional_< ::boost::optional<U> >
+{
+  static const bool value = true;
+};
+
+template <class T>
+struct is_no_optional
+{
+  static const bool value = !is_optional_<typename boost::decay<T>::type>::value;
+};
+
+}
+
+template <class T>
+class optional<T&> : public optional_detail::optional_tag
+{
+    T* ptr_;
+
+public:
+    typedef T& value_type;
+    typedef T& reference_type;
+    typedef T& reference_const_type;
+    typedef T& rval_reference_type;
+    typedef T* pointer_type;
+    typedef T* pointer_const_type;
+
+    optional() noexcept : ptr_() {}
+    optional(none_t) noexcept : ptr_() {}
+
+    template <class U>
+        explicit optional(const optional<U&>& rhs) noexcept : ptr_(rhs.ptr_) {}
+    optional(const optional& rhs) noexcept : ptr_(rhs.ptr_) {}
+
+
+    optional& operator=(const optional& rhs) noexcept { ptr_ = rhs.ptr_; return *this; }
+    template <class U>
+        optional& operator=(const optional<U&>& rhs) noexcept { ptr_ = rhs.ptr_; return *this; }
+    optional& operator=(none_t) noexcept { ptr_ = 0; return *this; }
+
+
+    void swap(optional& rhs) noexcept { std::swap(ptr_, rhs.ptr_); }
+    T& get() const { (static_cast <bool> (ptr_) ? void (0) : __assert_fail ("ptr_", "/usr/include/boost/optional/detail/optional_reference_spec.hpp", 108, __extension__ __PRETTY_FUNCTION__)); return *ptr_; }
+
+    T* get_ptr() const noexcept { return ptr_; }
+    T* operator->() const { (static_cast <bool> (ptr_) ? void (0) : __assert_fail ("ptr_", "/usr/include/boost/optional/detail/optional_reference_spec.hpp", 111, __extension__ __PRETTY_FUNCTION__)); return ptr_; }
+    T& operator*() const { (static_cast <bool> (ptr_) ? void (0) : __assert_fail ("ptr_", "/usr/include/boost/optional/detail/optional_reference_spec.hpp", 112, __extension__ __PRETTY_FUNCTION__)); return *ptr_; }
+    T& value() const { return ptr_ ? *ptr_ : (throw_exception(bad_optional_access()), *ptr_); }
+
+    bool operator!() const noexcept { return ptr_ == 0; }
+    inline __attribute__ ((__always_inline__)) explicit operator bool () const noexcept { return !this->operator! (); }
+
+    void reset() noexcept { ptr_ = 0; }
+
+    bool is_initialized() const noexcept { return ptr_ != 0; }
+
+
+
+    template <class R>
+        optional(R&& r, typename boost::enable_if<detail::is_no_optional<R> >::type* = 0) noexcept
+        : ptr_(boost::addressof(r)) { detail::prevent_binding_rvalue<R>(); }
+
+    template <class R>
+        optional(bool cond, R&& r, typename boost::enable_if<detail::is_no_optional<R> >::type* = 0) noexcept
+        : ptr_(cond ? boost::addressof(r) : 0) { detail::prevent_binding_rvalue<R>(); }
+
+    template <class R>
+        typename boost::enable_if<detail::is_no_optional<R>, optional<T&>&>::type
+        operator=(R&& r) noexcept { detail::prevent_binding_rvalue<R>(); ptr_ = boost::addressof(r); return *this; }
+
+    template <class R>
+        void emplace(R&& r, typename boost::enable_if<detail::is_no_optional<R> >::type* = 0) noexcept
+        { detail::prevent_binding_rvalue<R>(); ptr_ = boost::addressof(r); }
+
+    template <class R>
+      T& get_value_or(R&& r, typename boost::enable_if<detail::is_no_optional<R> >::type* = 0) const noexcept
+      { detail::prevent_binding_rvalue<R>(); return ptr_ ? *ptr_ : r; }
+
+    template <class R>
+        T& value_or(R&& r, typename boost::enable_if<detail::is_no_optional<R> >::type* = 0) const noexcept
+        { detail::prevent_binding_rvalue<R>(); return ptr_ ? *ptr_ : r; }
+
+    template <class R>
+      void reset(R&& r, typename boost::enable_if<detail::is_no_optional<R> >::type* = 0) noexcept
+      { detail::prevent_binding_rvalue<R>(); ptr_ = boost::addressof(r); }
+
+    template <class F>
+        T& value_or_eval(F f) const { return ptr_ ? *ptr_ : detail::forward_reference(f()); }
+};
+
+template <class T>
+  void swap ( optional<T&>& x, optional<T&>& y) noexcept
+{
+  x.swap(y);
+}
+
+}
+
+
+namespace boost {
+
+
+template<class T>
+inline
+optional<T> make_optional ( T const& v )
+{
+  return optional<T>(v);
+}
+
+
+template<class T>
+inline
+optional<T> make_optional ( bool cond, T const& v )
+{
+  return optional<T>(cond,v);
+}
+
+
+
+template<class T>
+inline
+typename optional<T>::reference_const_type
+get ( optional<T> const& opt )
+{
+  return opt.get() ;
+}
+
+template<class T>
+inline
+typename optional<T>::reference_type
+get ( optional<T>& opt )
+{
+  return opt.get() ;
+}
+
+
+
+template<class T>
+inline
+typename optional<T>::pointer_const_type
+get ( optional<T> const* opt )
+{
+  return opt->get_ptr() ;
+}
+
+template<class T>
+inline
+typename optional<T>::pointer_type
+get ( optional<T>* opt )
+{
+  return opt->get_ptr() ;
+}
+
+
+
+template<class T>
+inline
+typename optional<T>::reference_const_type
+get_optional_value_or ( optional<T> const& opt, typename optional<T>::reference_const_type v )
+{
+  return opt.get_value_or(v) ;
+}
+
+template<class T>
+inline
+typename optional<T>::reference_type
+get_optional_value_or ( optional<T>& opt, typename optional<T>::reference_type v )
+{
+  return opt.get_value_or(v) ;
+}
+
+
+
+template<class T>
+inline
+typename optional<T>::pointer_const_type
+get_pointer ( optional<T> const& opt )
+{
+  return opt.get_ptr() ;
+}
+
+template<class T>
+inline
+typename optional<T>::pointer_type
+get_pointer ( optional<T>& opt )
+{
+  return opt.get_ptr() ;
+}
+
+}
+
+namespace boost {
+
+
+template<class CharType, class CharTrait>
+std::basic_ostream<CharType, CharTrait>&
+operator<<(std::basic_ostream<CharType, CharTrait>& os, optional_detail::optional_tag const&)
+{
+  static_assert(sizeof(CharType) == 0, "If you want to output boost::optional, include header <boost/optional/optional_io.hpp>");
+  return os;
+}
+
+}
+
+namespace boost {
+template<class T>
+inline
+bool operator == ( optional<T> const& x, optional<T> const& y )
+{ return equal_pointees(x,y); }
+
+template<class T>
+inline
+bool operator < ( optional<T> const& x, optional<T> const& y )
+{ return less_pointees(x,y); }
+
+template<class T>
+inline
+bool operator != ( optional<T> const& x, optional<T> const& y )
+{ return !( x == y ) ; }
+
+template<class T>
+inline
+bool operator > ( optional<T> const& x, optional<T> const& y )
+{ return y < x ; }
+
+template<class T>
+inline
+bool operator <= ( optional<T> const& x, optional<T> const& y )
+{ return !( y < x ) ; }
+
+template<class T>
+inline
+bool operator >= ( optional<T> const& x, optional<T> const& y )
+{ return !( x < y ) ; }
+
+
+
+
+
+template<class T>
+inline
+bool operator == ( optional<T> const& x, T const& y )
+{ return equal_pointees(x, optional<T>(y)); }
+
+template<class T>
+inline
+bool operator < ( optional<T> const& x, T const& y )
+{ return less_pointees(x, optional<T>(y)); }
+
+template<class T>
+inline
+bool operator != ( optional<T> const& x, T const& y )
+{ return !( x == y ) ; }
+
+template<class T>
+inline
+bool operator > ( optional<T> const& x, T const& y )
+{ return y < x ; }
+
+template<class T>
+inline
+bool operator <= ( optional<T> const& x, T const& y )
+{ return !( y < x ) ; }
+
+template<class T>
+inline
+bool operator >= ( optional<T> const& x, T const& y )
+{ return !( x < y ) ; }
+
+
+
+
+
+template<class T>
+inline
+bool operator == ( T const& x, optional<T> const& y )
+{ return equal_pointees( optional<T>(x), y ); }
+
+template<class T>
+inline
+bool operator < ( T const& x, optional<T> const& y )
+{ return less_pointees( optional<T>(x), y ); }
+
+template<class T>
+inline
+bool operator != ( T const& x, optional<T> const& y )
+{ return !( x == y ) ; }
+
+template<class T>
+inline
+bool operator > ( T const& x, optional<T> const& y )
+{ return y < x ; }
+
+template<class T>
+inline
+bool operator <= ( T const& x, optional<T> const& y )
+{ return !( y < x ) ; }
+
+template<class T>
+inline
+bool operator >= ( T const& x, optional<T> const& y )
+{ return !( x < y ) ; }
+
+
+
+
+
+
+template<class T>
+inline
+bool operator == ( optional<T> const& x, none_t ) noexcept
+{ return !x; }
+
+template<class T>
+inline
+bool operator < ( optional<T> const& x, none_t )
+{ return less_pointees(x,optional<T>() ); }
+
+template<class T>
+inline
+bool operator != ( optional<T> const& x, none_t ) noexcept
+{ return bool(x); }
+
+template<class T>
+inline
+bool operator > ( optional<T> const& x, none_t y )
+{ return y < x ; }
+
+template<class T>
+inline
+bool operator <= ( optional<T> const& x, none_t y )
+{ return !( y < x ) ; }
+
+template<class T>
+inline
+bool operator >= ( optional<T> const& x, none_t y )
+{ return !( x < y ) ; }
+
+
+
+
+
+template<class T>
+inline
+bool operator == ( none_t , optional<T> const& y ) noexcept
+{ return !y; }
+
+template<class T>
+inline
+bool operator < ( none_t , optional<T> const& y )
+{ return less_pointees(optional<T>() ,y); }
+
+template<class T>
+inline
+bool operator != ( none_t, optional<T> const& y ) noexcept
+{ return bool(y); }
+
+template<class T>
+inline
+bool operator > ( none_t x, optional<T> const& y )
+{ return y < x ; }
+
+template<class T>
+inline
+bool operator <= ( none_t x, optional<T> const& y )
+{ return !( y < x ) ; }
+
+template<class T>
+inline
+bool operator >= ( none_t x, optional<T> const& y )
+{ return !( x < y ) ; }
+
+}
+namespace boost {
+
+namespace optional_detail {
+
+template <bool use_default_constructor> struct swap_selector;
+
+template <>
+struct swap_selector<true>
+{
+    template <class T>
+    static void optional_swap ( optional<T>& x, optional<T>& y )
+    {
+        const bool hasX = !!x;
+        const bool hasY = !!y;
+
+        if ( !hasX && !hasY )
+            return;
+
+        if( !hasX )
+            x.emplace();
+        else if ( !hasY )
+            y.emplace();
+
+
+        boost::swap(x.get(), y.get());
+
+        if( !hasX )
+            y = boost::none ;
+        else if( !hasY )
+            x = boost::none ;
+    }
+};
+template <>
+struct swap_selector<false>
+{
+    template <class T>
+    static void optional_swap ( optional<T>& x, optional<T>& y )
+
+    {
+        if (x)
+        {
+            if (y)
+            {
+                boost::swap(*x, *y);
+            }
+            else
+            {
+                y = boost::move(*x);
+                x = boost::none;
+            }
+        }
+        else
+        {
+            if (y)
+            {
+                x = boost::move(*y);
+                y = boost::none;
+            }
+        }
+    }
+};
+
+}
+
+
+
+template<class T>
+struct optional_swap_should_use_default_constructor : boost::false_type {} ;
+template <class T>
+inline void swap ( optional<T>& x, optional<T>& y )
+
+{
+    optional_detail::swap_selector<optional_swap_should_use_default_constructor<T>::value>::optional_swap(x, y);
+}
+
+}
+
+
+
+
+
+
+
+template<typename C>
+struct check_type {
+
+    bool
+    operator()(rapidjson::Value const& v) const;
+};
+
+
+
+template<>
+struct check_type<size_t> {
+    bool operator()(rapidjson::Value const& v) const { return v.IsUint64(); }
+};
+
+
+
+
+
+
+template<typename G>
+struct get_type {
+
+    G
+    operator()(rapidjson::Value const& v) const
+    {
+        G ret;
+        for (auto it = v.MemberBegin(); it != v.MemberEnd(); ++it) {
+            ret.emplace(
+                get_type<typename G::key_type>{}(it->name),
+                get_type<typename G::mapped_type>{}(it->value));
+        }
+        return ret;
+    }
+};
+
+
+
+template<>
+struct get_type<size_t> {
+    size_t operator()(rapidjson::Value const& v) const { return v.GetUint64(); }
+};
+
+
+
+
+
+
+struct get_from_json {
+    get_from_json(rapidjson::Value const& j, const char* k)
+    : json(j), key(k)
+    {}
+
+
+
+    get_from_json (get_from_json const&) = default;
+    get_from_json& operator=(get_from_json const&) = default;
+    get_from_json (get_from_json&&) = default;
+    get_from_json& operator=(get_from_json&&) = default;
+
+
+    template<typename GetWhat>
+    explicit operator boost::optional<GetWhat>() const
+    {
+        if (!json.IsObject()) {
+            throw std::invalid_argument{std::string{"There is no object, but "}
+                + "something"};
+        }
+        auto const it = json.FindMember(key);
+        if (it == json.MemberEnd()) {
+            return boost::none;
+        }
+        return check_type<GetWhat>{}(it->value)
+            ? boost::make_optional(get_type<GetWhat>{}(it->value))
+            : throw std::invalid_argument{
+                std::string{key} + std::string{" is not of appropriate type in the config"}};
+    }
+
+    template<typename AsWhat>
+    boost::optional<AsWhat> maybe() const
+    {
+        return
+            this->operator boost::optional<AsWhat>();
+
+    }
+
+    rapidjson::Value const& json;
+    const char* key;
+};
+
+
+
+
+int main()
+{
+ rapidjson::Value val;
+
+ boost::optional<unsigned> retry_count;
+
+ retry_count = get_from_json(val, "retry_count").maybe<size_t>();
+}
diff --git a/pr83988.C b/pr83988.C
new file mode 100644
index 0000000..9441b0f
--- /dev/null
+++ b/pr83988.C
@@ -0,0 +1,14 @@
+template<class T> struct optional {};
+struct get_from_json {
+  template<typename GetWhat>
+  explicit operator optional<GetWhat>() const {return optional<GetWhat> ();}
+  template<typename AsWhat>
+  optional<AsWhat> maybe() const
+  {
+    return this->operator optional<AsWhat>();
+  }
+};
+void test()
+{
+  get_from_json().maybe<int>();
+}
-- 
1.8.5.3

