#include <iostream>
#include <algorithm>
#include <cstring>
#include <cstdio> 
using namespace std;
const int N = 200000 + 10;
int main()
{
	freopen("road.in", "r", stdin);
	freopen("road.out", "w", stdout);
	cout << 0 << endl;
	return 0;
}

