#include<bits/stdc++.h>
using namespace std;
const int N=114514;
int n,x,y;
int a[N],b[N],g[N],k[N],xy[N][N];
int main()
{
	cin>>n;
	for(int i=1; i<=n; i++)
		cin>>a[i]>>b[i]>>g[i]>>k[i];
	cin>>x>>y;
	for(int i=1; i<=n; i++)
	{
		for(int xx=a[i]; xx<=a[i]+g[i]; xx++)
		{
			for(int yy=b[i]; yy<=b[i]+k[i]; yy++)
			{
				xy[xx][yy]=i;
			}
		}
	}
	cout<<xy[x][y];
	return 0;
}