#include <bits/stdc++.h>
using namespace std;

int main()
{
	int N;
	cin >> N;

	int f4 = 0, f6 = 0;
	while( N ) {
		int n = N % 10;
		if( n == 4 ) f4 = 1;
		if( n == 6 ) f6 = 1;
		N /= 10;
	}
	string ans = "...";
	if( f4 && f6 ) ans = "Beautiful";

	cout << ans << endl;
}