text: #include <cstdio>
  #include <iostream>
  
  template <typename T>
  T read();
  
  int main() {
      freopen("girl.in", "r", stdin);
      freopen("girl.out", "w", stdout);
  
      int n = read<int>();
  
      if (n <= 2) {
          std::cout << "0\n";
      } else {
          std::cout << "FUCK\n";
      }
  
      fclose(stdin);
      fclose(stdout);
      return 0;
  }
  
  template <typename T>
  T read() {
      T x = 0, f = 1;
      char ch = getchar();
      while (!isdigit(ch)) {
          if (ch == '-') f = -1;
          ch = getchar();
      }
      while (isdigit(ch)) {
          x = x * 10 + ch - 48;
          ch = getchar();
      }
      return x * f;
  }