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

int main()
{
  int N;
  cin >> N;
  
  bool four_e = false;
  bool six_e = false;
  while(N > 0)
  {
    if(N % 10 == 4) four_e = true;
    else if(N % 10 == 6) six_e = true;
    N /= 10;
  }
  
  if(four_e && six_e) cout << "Beautiful" << endl;
  else cout << "..." << endl;
  return 0;
}