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


int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    string S; cin >> S;
    string ans = "Beautiful";
    if(S.find('4') == string::npos) ans = "...";
    if(S.find('6') == string::npos) ans = "...";
    cout << ans << endl;
    return 0;
}