// #define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
int main() {
    // Input
    string N;
    cin >> N;

    // Output
    bool b = N.find('4') != string::npos && N.find('6') != string::npos;
    cout << (b ? "Beautiful" : "...") << endl;
}