#include<iostream>
#include<vector>
#include<string>
#include<array>
#include<cmath>
#include<algorithm>
#include<map>
#include<set>
#include<queue>
#include<numeric>
#include<iomanip>
#include<utility>
#include<cstdlib>
#include<typeinfo>
#include<stack>
#include<cassert>
#define int long long int
using namespace std;
#define INT_MAX 1000000005
#define INF 1000000005
const int MAX_N = 1 << 17;
#define REP(i,n) for(int (i)=0;(i)<(n);(i)++)
using namespace std;

signed main()
{
std::vector<std::vector<int>> nk;
int p;
std::cin >> p;
for(int i = 0; i < 1000; i++){
    int n;
    int k;
    std::cin >> n >> k;
    std::vector<int> temp = {n,k};
    nk.push_back(temp);
}
std::cout << 500 << std::endl;
return 0;
}