namespace std {
    template<> struct char_traits<char> {
      // Определения типов:
      typedef char      char_type;
      typedef int       int_type; 
      typedef streampos pos_type;
      typedef streamoff off_type;
      typedef mbstate_t state_type;

      // Функции:
      static void assign(char& c1, const char& c2) {
          c1 = c2;
      }
      static void eq(const char& c1, const char& c2) {
          return c1 == c2;
      }
      static bool lt(const char& c1, const char& c2) {
          return c1 < c2;
      }
      static size_t length(const char* s) {
          return strlen(s);
      }
      static int compare(const char* s1, const char* s2, size_t n) {
          return memcmp(s1,s2,n);
      }
      static char* copy(char* s1, const char* s2, size_t n) {
          return (char*)memcpy(s1,s2,n);
      }
      static char* move(char* s1, const char* s2, size_t n) {
          return (char*)memmove(s1,s2,n);
      }
      static char* assign(char* s1, size_t n, char c) {
          return (char*)memset(s,c,n);
      }
      static const char* find(const char* s, size_t n,
                              const char& c) {
          return (const char*)memchr(s,c,n);
      }
      static int eof() {
          return EOF;
      }
      static int to_int_type(const char& c) {
          return (int)(insigned char)c;
      }
      static char to_char_type(const int& i) {
          return (char)i;
      }
      static int not_eof(const int& i) {
          return i!=EOF ? i : !EOF;
      }
      static bool eq_int_type(const int& i1, const int& i2) {
          return i1==i2;
      }
    };
}