#include<bits/stdc++.h>
using namespace std;
int m[10010][10010] = {0};
int n,a,b,g,k,num = 0,x,y;
int main(){
	cin>>n;
	for(int i = 0;i<n;i++,num++)
	{
		cin>>a>>b>>g>>k;
		m[a][b]=num;
		for(int j = a;j<a+g;j++)
			for(int p = b;p<b+k;p++)
				m[j][p] = num;
	}
	cin>>x>>y;
	if(m[x][y] == 0) cout<<"-1";
	else cout<<m[x][y];
	return 0;
}

MLE（Memory Limit Enough内存充裕）了，求dalao来调