#include <bits/stdc++.h>
using namespace std;
int n;
int x,y,g,k;
int a[200000],b[200000];
int main(){
	cin>>n;
	memset(a,-1,sizeof(a));
	memset(b,-1,sizeof(b));
	for(int i = 1;i <= n;i++){
		cin>>x>>y>>g>>k;
		for(int j = x;j <= x+g-1;j++){
			a[j] = i;
		}
		for(int j = y;j <= y+k-1;j++){
			b[j] = i;
		}
	}
	cin>>x>>y;
	cout<<min(a[x],b[y]);
	return 0;
}

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