#include<bits/stdc++.h>
using namespace std;
long long ans=-1,n,a[100010],b[100010],g[100010],k[100010];
int main(){
	cin>>n;
	for(int i=1;i<=n;i++)
		cin>>a[i]>>b[i]>>g[i]>>k[i];
	long long x,y;
	cin>>x>>y;
	for(int i=n;i>=1;i--){
		if(x>=a[i]&&x<=g[i]&&y>=b[i]&&x<=k[i]){
			cout<<i;
			return 0;
		}
	}
	cout<<-1;
	return 0;
}