1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12
13. 13

#include <bits/stdc++.h>
#define f first
#define s second
using namespace std;
using ll = long long;
using ii = pair<int, int>;

int main() {
	if (fopen("in", "r")) freopen("in", "r", stdin), freopen("out", "w", stdout);
	ios_base::sync_with_stdio(0), cin.tie(0);


}