#include<bits/stdc++.h>
using namespace std;

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