//#include <bits/stdc++.h>
//#include <cstdint>
//#include <sys/time.h>
#include <vector>
#include <string>
#include <iostream>
#include <stdio.h>
#include <string.h>

typedef std::int_fast32_t  s32;
typedef std::uint_fast32_t u32;
typedef std::int_fast64_t  s64;
typedef std::uint_fast64_t u64;

const unsigned long mod = 1000000007;

int main() {

  int N, K;
  
  for(int i = 0; i < 1000; ++i) {
    std::cin >> N >> K;
  }

  std::cout << 500 << std::endl;
  
  return 0;
}