#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < n; ++i)
typedef long long ll;
using namespace std;

int main() {
    cin.tie(0)->sync_with_stdio(0);

    string S;
    cin >> S;

    if (S.find("6") == string::npos)
        cout << "...";
    else if (S.find("4") == string::npos)
        cout << "...";
    else
        cout << "Beautiful";
    cout << "\n";

    return 0;
}