using System.Numerics;

public class Program
{
    public static void Main()
    {

        //int num = int.Parse(Console.ReadLine() ?? string.Empty);
        //string[] str = (Console.ReadLine() ?? string.Empty).Trim().Split(' ');
        string str = Console.ReadLine() ?? string.Empty;
        string str2 = Console.ReadLine() ?? string.Empty;

        BigInteger a = Convert.ToInt32(str, 2);
        BigInteger b = Convert.ToInt32(str2, 2);

        if ((a*b)% 2==0)
        {
            Console.WriteLine("Even");
        }
        else
        {

            Console.WriteLine("Odd");
        }

    }
}