#include<iostream>
using namespace std;
const int maxn=10000;
int map[maxn][maxn],a[maxn],b[maxn],g[maxn],k[maxn];
int main()
{
	int n; 
	ios::sync_with_stdio(0);
	cin>>n;
	for(int i=1;i<=n;i++)
		cin>>a[i]>>b[i]>>g[i]>>k[i];
		int x,y;
	cin>>x>>y;
	for(int i=n;i>=1;i--){
		if(x>=a[i]&&x<=g[i]&&y>=b[i]&&y<=k[i])
		{
			cout<<i;
			return 0;
		}
	}
	cout<<"-1";
	return 0;
}