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

int n;
int d[15];
int x, y;

int main() {
	cin >> n;
	for (int i = 0; i < n; i++) cin >> d[i];
	cin >> x >> y;
	if (x < 0) x = -x;
	if (y < 0) y = -y;

	int ans = 1145141919;
	for (int i = 0; i < n; i++) {
		int cnt;
		if (max(x, y) % d[i] == 0) {
			cnt = max(x, y) / d[i];
		}
		else if (max(x, y) < d[i]) {
			cnt = 2;
		}
		else {
			cnt = max(x, y) / d[i] + 1;
		}
		ans = min(ans, cnt);
	}
	cout << ans << endl;
	return 0;
}

//自信ない