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

int main() {
 string a;
  cin >> a;
  int count=0; 
  int count2=0;
  for(int i=0;i<a.size() ;i++){
    if(a.at(i) == '4'){
      count++;
    }
    else if(a.at(i)=='6'){
      count2++;
    }
  }
  if((count>=1)&&(count2>=1)){
    cout << "Beautiful";
  }
  else{
    cout << "...";
  }
}