#include <bits/stdc++.h>
using namespace std;
int n, x, y;
int a[10005], b[10005], g[10005], k[10005];
int main()
{
	cin >> n;
	for (int i = 1; i <= n; i++)
	{
		cin >> a[i] >> b[i] >> g[i] >> k[i];
	}
	cin >> x >> y;
	do
	{
		if (x >= a[n] && x <= g[n] && y >= b[n] && y <= k[n])
		{
			cout << n;
			return 0;
		}
    }while (n--);
	cout << -1;
	return 0;
}