using System;

public class Hello
{
    static void Main()
    {
        var s = Console.ReadLine().Trim();
        var f4 = false;
        var f6 = false;
        foreach (var x in s)
        {
            if (x == '4') f4 = true;
            else if (x == '6') f6 = true;
        }
        Console.WriteLine(f4 && f6 ? "Beautiful" : "...");
    }
}