#include<iostream>
#include<algorithm>
#include<cstdio>
#include<cstdlib>
#include<vector>
#include<map>
#include<queue>
#include<string>
#include<sstream>
#include<cmath>
#include<numeric>
using namespace std;

int main(){

  int n, k;
  int cnt = 0;
  bool player = true;
  for(int i=0; i<1000; i++){
    cin >> n >> k;
  }
  cout << 500 << endl;

  return 0;
}