#include <iostream>
#include <algorithm>
#include <string>
using namespace std;

int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	string s; cin >> s;
	bool f0 = false, f1 = false;
	for (int i = 0; i < s.length(); i++) {
		if (s[i] == '4') f0 = true;
		if (s[i] == '6') f1 = true;
	}
	if (f0 && f1) cout << "Beautiful\n";
	else cout << "...\n";
	return 0;
}