#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cmath>
#define ll long long
using namespace std;
const int N = 1e5 + 5;
int n;
int main(){
	freopen("road.in", "r", stdin);
	freopen("road.out", "w", stdout);
	scanf("%d", &n);
	fclose(stdin);
	fclose(stdout);
	return 0;
}

