#include<bits/stdc++.h>
#define endl "\n"
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
//value
const int inf=2147483647;
const int mod=1e9+7;
const int N=1e6+5;



//function



int main(){
	ios::sync_with_stdio(0); 
	cin.tie(); 
	cout.tie();
	
	freopen("employ.in","r",stdin); 
	freopen("employ.out","w",stdout);
	
	//лл��ccf
	
	cout<<0<<endl;
	
	//16:08���ؼ�������
	 
	
	return 0;
}

