#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<map>
using namespace std;
int main() {
	bool f = 0;
	bool g = 0;
	string n;
	cin >> n;
	for (int i=0;i<n.length(); i++) {
		if (n[i] == '4') g = 1;
		if (n[i] == '6') f = 1;
	}
		
	
	if(f and g) cout << "Beautiful" << endl;
	else cout << "..." << endl;
	return 0;
}