#include <bits/stdc++.h>
using namespace std;
const int N = 1e6;
const long long INF = 1e18;
const long double EPS = 10e-9;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
long long random(long long a, long long b) {
  return uniform_int_distribution<long long>(a, b)(rng);
}
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  return 0;
}
