#include <bits/stdc++.h>
using namespace std;
struct node{
	int xx,yy,x2,y2;
}a[10010];
int n;
int x,y;
int main(){
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i].xx>>a[i].yy>>a[i].x2>>a[i].y2;
	}
	cin>>x>>y;
	for(int i=n;i>0;i--){
		if(a[i].xx>=x&&a[i].yy>=y&&a[i].x2<=x&&a[i].y2<=y){
			cout<<i;
			return 0;
		}
	}
	cout<<-1;
	return 0;
}