#include <bits/stdc++.h>
using namespace std;
int main() {
    string s;
    cin >> s;
    bool fr = false;
    bool sx = false;
    for (const char& c : s) {
        if (c == '4') fr = true;
        if (c == '6') sx = true;
    }
    if (fr && sx) {
        cout << "Beautiful" << endl;
        return 0;
    }
    cout << "..." << endl;
    return 0;
}