#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<int, int>;
int const mod = 1000000007;
int main() {
  int n;
  cin >> n;
  vector<pair<ll, ll>> iwashi(n);
  for (int i = 0; i < n; i++) {
    int a, b;
    cin >> a >> b;
    pair<ll, ll> now = make_pair(a, b);
    iwashi[i] = now;
  }
  return 0;
}
