#include <bits/stdc++.h>

using namespace std;

string p;

bool cuatro = 0;

bool seis = 0;
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);


    cin >> p;

    int tam = p.size();


    for(int i = 0; i < tam; i++){
        if(p[i] == '4')cuatro = true;
         if(p[i] == '6')seis = true;

    }

    if(cuatro && seis){
        cout << "Beautiful";
    }else{
        cout << "...";
    }



return 0;
}