#include <bits/stdc++.h>
using namespace std;
void mmin(long long &a, long long b) { a = min(a, b); }
void mmax(long long &a, long long b) { a = max(a, b); }
void sor(vector<long long> &v) { sort(v.begin(), v.end()); }
signed main() {
  cout << 0 << endl;
  return 0;
}
