#include <ext/hash_map>#include <math.h>#include <stdio.h>using namespace std;#define FLT_EPSILON 1.192093e-007#define DBL_EPSILON 2.2204460492503131e-016#define FLOAT_EPSILON(a,b) ( a > b ? fabs(a) * FLT_EPSILON : fabs(b) * FLT_EPSILON)#define DOUBLE_EPSILON(a,b) ( a > b ? fabs(a) * FLT_EPSILON : fabs(b) * DBL_EPSILON)#define float_equal(a, b) (fabs((a)-(b)) <= FLOAT_EPSILON(a,b))#define double_equal(a, b) (fabs((a)-(b)) <= DOUBLE_EPSILON(a,b))#define INT64_MAX 0x7fffffffffffffffLLtypedef struct  {      size_t operator()(const double & dValue) const      {             int e = 0 ;          double tmp = dValue;          if (dValue<0)          {              tmp = -dValue;          }          e = ceil (log (dValue));          return size_t(( INT64_MAX+ 1.0) * tmp * exp (-e));      }  } hash_double; typedef struct  {      bool operator()(const double &value1,const double &value2) const      {          return double_equal(value1,value2);      }  } hash_double_cmp;  typedef struct  {      size_t operator()(const string & str) const      {          size_t h=0;for(size_t i=0;i<str.length();++i)          {              h = ( h<<5 ) - h + str[i];          }          return h;          //return __stl_hash_string(str.c_str());      }  } hash_string;  typedef struct  {      bool operator()(const string &str1,const string &str2) const      {          return str1.compare(str2) == 0;      }  } hash_str_cmp;