#include <cstdio>

bool is_space(int ch) { return ch == ' ' || ch == '\n' || ch == '\t' || ch == '\r' || ch == '\f' || ch == '\v'; }
bool is_digit(int ch) { return ch == '1' || ch == '2' || ch == '3' || ch == '4' || ch == '5' || ch == '6' || ch == '7' || ch == '8' || ch == '9' || ch == '0'; }
long long int read_int() {
  long long int sgn = 1, ret = 0;
  int ch = getchar_unlocked();
  while (is_space(ch)) ch = getchar_unlocked();
  if (ch == '-') {
    sgn = -1;
    ch = getchar_unlocked();
  }
  for (; is_digit(ch); ch = getchar_unlocked()) ret = (ret * 10) + (ch - '0');
  ungetc(ch, stdin);
  return sgn * ret;
}

int main() {
    long long int i = read_int();
    printf("%ld\n", i);
    return 0;
}