#define SZ (32000 << 10)
int _i0, _o0;
char _, _n, __[22], _i[SZ + 5], _o[SZ + 5];
#define su(x) do { for (x = _i[_i0++] - 48; 47 < (_ = _i[_i0++]); x = x * 10 + _ - 48); } while (0);
#define si(x) do { _n = _i[_i0++]; if (_n - 45) x = _n; else x =_i[_i0++]; for (x -= 48; 47 < (_ = _i[_i0++]); x = x * 10 + _ - 48); if (_n < 46) x = -x; } while (0);
void pl(ll x, char c) { if (x < 0) { _o[_o0++] = '-'; x = -x; } _ = 0; do { __[_++] = x % 10; } while (x /= 10); while (_--) _o[_o0++] = __[_] + '0'; if (c != 'n') _o[_o0++] = c; }
void pc(char c) { _o[_o0++] = c; }
void pw(string &s) { for (int i = 0; i < s.size(); ++i) _o[_o0++] = s[i]; }

// after int main

// FILE * f = fopen("f", "r");
// fread(_i, 1, SZ, f);
// fclose(f);
fread(_i, 1, SZ, stdin);
fwrite(_o, 1, _o0, stdout);