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;


        bool four = str.Contains('4');
        bool six = str.Contains('6');

        if(four && six)
        {
            Console.WriteLine("Beautiful");
        }
        else
        {
            Console.WriteLine("...");
        }
    }
}