#include<iostream>
#include<cmath>
#include<cstring>
#include<cstdio>
#include<cstdlib>
#include<algorithm>
using namespace std;
int map[10001][10001];
int main() {
	int n;
	int x,y,g,k;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>x>>y>>g>>k;
		for(int j=x;j<x+g;j++){
			for(int l=y;l<y+k;l++){
				map[j][l]=i;
			}
		}
	} 
	int a,b;
	cin>>a>>b;
	if(map[a][b]==0)cout<<-1<<endl;
	else cout<<map[a][b]<<endl;
	return 0;
}