#include <iostream>
#include<cstring>
using namespace std;

int arr[10010][4];
int main()
{
	memset(arr, -1, sizeof(arr));//初始化数组为-1
	int n, x, y, a, b, x0, y0, k = 1;;
	cin >> n;
	while (n) {
		cin >> x >> y >> a >> b;
		n--;//每输入一次，n减一，知道减为零铺地毯完毕
		for (int i = 0; i <= a; i++) {
			for (int j = 0; j <= b; j++) {
				arr[x + i][y + j] = k;//把覆盖的地方赋值为当前地毯编号
			}
		}
		k++;
	}
	cin >> x0 >> y0;
	cout << arr[x0][y0];
	return 0;
}