#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using P = pair<int, int>;

int main() {
  string n;
  cin >> n;
  bool has4 = false, has6 = false;
  for (char c : n) {
    if (c == '4')
      has4 = true;
    else if (c == '6')
      has6 = true;
  }

  if (has4 && has6)
    cout << "Beautiful" << endl;
  else
    cout << "..." << endl;

  return 0;
}