using System;

namespace ABC033
{
public class A
{
    public static void Main(string[] args)
    {
        var input = Console.ReadLine();
        Console.WriteLine(checker(input) ? "SAME" : "DIFFERENT");
    }

    public static bool checker(string input)
    {
        char prev = input[0];
        foreach (var c in input)
        {
            if (prev != c)
            {
                return false;
            }
            prev = c;
        }
        return true;
    }
}
}