using System;
using System.Collections.Generic;
using static System.Console;
using System.Linq;

class yuki320
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(int n) => Enumerable.Repeat(0, n).Select(_ => NList).ToArray();
    static void Main()
    {
        var n = ReadLine();
        WriteLine(n.Contains('4') && n.Contains('6') ? "Beautiful" : "...");
    }
}