using System;
class Program 
{
    static void Main(string[] args)
    {
        string[] input = Console.ReadLine().Split('');
        int a = int.Parse(input[0]);
        int b = int.Parse(input[1]);
        if (a * b % 2 == 0)
        {
            Console.WriteLine("Even");
        }
        else
        {
            Console.WriteLine("Odd");
        }
    }
}
