#include <iostream>
using namespace std;
int main(){
    string s;cin>>s;
    bool a,b;
    a = b = false;
    for(int i = 0; s.size() > i; i++){
        if(s[i] == '4')a=true;
        if(s[i] == '6')b=true;
    }
    if(a&&b){
        cout << "Beautiful" << endl;
    }else{
        cout << "..." << endl;
    }
}