#include<iostream>
#include<string>
#include<algorithm>
#include<cctype>
#include<set>
#include<bitset>
#include<math.h>
#include<map>
#include<queue>
#include<iomanip>
using namespace std;

int main(){
    string s;
    cin >> s;
    auto i = find(s.begin(), s.end(), '4');
    auto j = find(s.begin(), s.end(), '6');
    if (i == s.end()) cout << "..." << endl;
    else if (j == s.end()) cout << "..." << endl;
    else cout << "Beautiful" << endl;
}