#include <bits/stdc++.h>
using namespace std;
int power(int x, int y, int mod) {
  int res = 1;
  while (y > 0) {
    if ((y & 1) == 1) {
      res = ((long long)res * x) % mod;
    }
    y >>= 1;
    x = ((long long)x * x) % mod;
  }
  return res;
}
int mod_inverse(int n, int p) { return power(n, p - 2, p); }
int modulo_divide(int a, int b, int mod) {
  return ((long long)a * mod_inverse(b, mod)) % mod;
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  return 0;
}
