#include <bits/stdc++.h>
#include "testlib.h"
using namespace std;
using ll = long long;

int main()
{
  ll N = inf.readLong((ll)1, (ll)50000);
  inf.readSpace();
  ll M = inf.readLong((ll)1, (ll)50000);
  inf.readEoln();
  inf.readEof();
}