#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main() {
        string S;
        cin >> S;
        bool ok_4 = false, ok_6 = false;
        for(int i = 0; i < S.size(); ++i) {
                if(S[i] == '4') ok_4 = true;
                if(S[i] == '6') ok_6 = true;
        }
        if(ok_4 && ok_6) cout << "Beautiful" << endl;
        else cout<< "..." << endl;
}