#include <cmath>
#include <string>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
int main() {
	int n;
	cin >> n;
	int bit = 0;
	while (n > 0) {
		if (n % 10 == 4) bit |= 1;
		if (n % 10 == 6) bit |= 2;
		n /= 10;
	}
	cout << (bit == 3 ? "Beautiful" : "...") << endl;
	return 0;
}