#include<iostream>
using namespace std;
int main(){
	int n,a[400005];
	cin>>n;
	int i,j = 0;
	for(i = 1; i <= n * 4; i += 4){
		cin>>a[i]>>a[i + 1]>>a[i + 2]>>a[i + 3];
		j++;
	}
	int c,b;
	cin>>c>>b;
	i -= 4;
	for(;i >= 0; i-= 4){
		if(c >= a[i] && c <= a[i + 2] && b >= a[i + 1] && b <= a[i + 3]){
			cout<<j;
			return 0;
		}
		j--;
	}
	cout<<"-1";
	return 0;
} 

错了测试点5