#include<bits/stdc++.h>
using namespace std;
#define int long long
int n;
signed main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	freopen("road.in","r",stdin);
	freopen("road.out","w",stdout);
	cin>>n;
	return 0;
}
