#include <bits/stdc++.h>

using namespace std;

#define rep(i, n) for (int i = 0; i < (int)n; ++i)
#define FOR(i, a, b) for (int i = a; i < (int)b; ++i)
#define rrep(i, n) for (int i = ((int)n - 1); i >= 0; --i)

using ll = long long;
using ld = long double;

__attribute__((unused)) const ll INF = 1e18;
__attribute__((unused)) const int Inf = 1e9;
__attribute__((unused)) const double EPS = 1e-9;
__attribute__((unused)) const ll MOD = 1000000007;

int main() {
  cin.tie(nullptr);
  ios::sync_with_stdio(0);
  string s;
  cin >> s;
  bool c4 = false, c6 = false;
  rep(i, s.size()) {
    if (s[i] == '4') c4 = true;
    if (s[i] == '6') c6 = true;
  }
  if (c4 && c6)
    cout << "Beautiful" << endl;
  else
    cout << "..." << endl;

  return 0;
}