#include <iostream>
using namespace std;

int main(){
    int n;
    cin >> n;
    bool a4 = false, a6 = false;
    
    while(n > 0){
        int r = n % 10;
        n /= 10;
        
        if(r == 4){
            a4 = true;
        }else if(r == 6){
            a6 = true;
        }
    }
    
    if(a4 && a6){
        cout << "Beautiful" << endl;
    }else{
        cout << "..." << endl;
    }
    
    return 0;
}