using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplicationSharp
{
	class Program
	{
		static void Main(string[] args)
		{
			int n = int.Parse(Console.ReadLine());
			decimal[] d = new decimal[n];
			String[] s = Console.ReadLine().Split(' ');
			for(int i = 0; i < n; i++)
			{
				d[i] = decimal.Parse(s[i]);
			}
			s = Console.ReadLine().Split(' ');
			decimal x = decimal.Parse(s[0]), y = decimal.Parse(s[1]);
			//答えが1のとき
			int check = Array.IndexOf(d, Math.Max(x, y));
			if (check != -1) Console.WriteLine(1);
			else Console.WriteLine(Math.Max((int)Math.Ceiling(Math.Max(x, y) / d[n - 1]),2));
		}
	}
}