#include<bits/stdc++.h>
using namespace std;
int n,m,p,s,c[100010];
int main()
{
	freopen("employ.in","r",stdin);
	freopen("employ.out","w",stdout);
	scanf("%d%d",&n,&m);
	scanf("%d%d",&s);
	scanf("%d%d",&c);
	for(int i=0;i<=n;i++)
	{
		cin>>c[i];
		
	}
	printf("%d",p);
	fclose(stdin);
	fclose(stdout);
	return 0;
}
