#include <bits/stdc++.h>

using namespace std;

int main(void) {
    string N;
    cin >> N;

    if ((N.find("4") != string::npos) && (N.find("6") != string::npos)) {
        cout << "Beautiful" << endl;
    } else {
        cout << "..." << endl;
    }

    return 0;
}