#include <iostream>
#include <vector>
#include <algorithm>
#include <functional>
#include <queue>
#include <map>
#include <cmath>
#include <iomanip>
#include <set>
#include <cstdio>

using namespace std;

int main() {
  string s;
  cin >> s;
  vector<int> cnt(10 , 0);
  for (int i = 0; i < s.size(); i++) {
    cnt[s[i] - '0']++;
  }
  if (cnt[4] > 0 && cnt[6] > 0) {
    cout << "Beautiful" << endl;
  } else {
    cout << "..." << endl;
  }
  return 0;
}