#include<bits/stdc++.h>
#include<iostream>
#include<algorithm>
#include<cmath>
#include<string>
#include<cstring>
#include<cstdio>
#include<queue>
using namespace std;
int main()
{
	freopen("replace.in","r",stdin);
	freopen("replace.out","w",stdout);
	cout<<0;
	return 0;
}
