#include<bits/stdc++.h>
using namespace std;

int main(){
  string S;
  cin >> S;
  bool f=false,s=false;
  for(int i=0;i<S.size();i++){
    if(S[i] == '4') f = true;
    if(S[i] == '6') s = true;
  }
  if(f && s) cout << "Beautiful" << endl;
  else cout << "..." << endl;
}