#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
const int N = 100005;
const int M = 1000000007;

int n, m;
int a[N];

int main() {
  while (~scanf("%d", &n)) {
    for (int i = 0; i < n; i++) {
      scanf("%d", &a[i]);
    }

  }
}