import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String str = br.readLine();
		int n = Integer.parseInt(str);
		str = br.readLine();
		String[] dstr = str.split(" ");
		int[] d = new int[n];
		for (int i = 0; i < n; i++)
			d[i] = Integer.parseInt(dstr[i]);
		str = br.readLine();
		String[] coordinate = str.split(" ");
		int x = Integer.parseInt(coordinate[0]);
		int y = Integer.parseInt(coordinate[1]);
		int dst = Math.max(x, y);
		int[] d_s = Sort(d);
		if (dst < d_s[n - 1])
			System.out.println("2");
		else if (dst <= d_s[0]) {
			boolean flag = false;
			for (int dist : d_s) {
				if (dst == dist) {
					System.out.println("1");
					flag = true;
					break;
				}
			}
			if (!flag)
				System.out.println("2");
		} else {
			if (dst % d_s[0] == 0)
				System.out.println(dst / d_s[0]);
			else
				System.out.println(dst / d_s[0] + 1);
		}

	}

	private static int[] Sort(int[] num) {
		int length = num.length;
		for (int i = 1; i < length - 1; i++) {
			for (int j = 0; j < length - i; j++) {
				if (num[j] < num[j + 1]) {
					int tmpnum = num[j];
					num[j] = num[j + 1];
					num[j + 1] = tmpnum;
				}
			}
		}
		return num;
	}
}