using System;

public class Hello
{
    static void Main()
    {
        var a = Console.ReadLine().Trim();
        var b = Console.ReadLine().Trim();
        getAns(a, b);
    }
    static void getAns(string a, string b)
    {
        var aL = a.Length;
        var bL = b.Length;
        var c1 = a[aL - 1] == '0';
        var c2 = b[bL - 1] == '0';
        Console.WriteLine(c1 | c2 ? "Even" : "Odd");
    }
}