#include <bits/stdc++.h>
using namespace std;
int main(){
  int N;
  cin >> N;
  bool ok1 = false, ok2 = false;
  while (N > 0){
    if (N % 10 == 4){
      ok1 = true;
    }
    if (N % 10 == 6){
      ok2 = true;
    }
    N /= 10;
  }
  if (ok1 && ok2){
    cout << "Beautiful" << endl;
  } else {
    cout << "..." << endl;
  }
}