#include "bits/stdc++.h"

#define int long long

using namespace std;
using ll = long long;
using P = pair<ll, ll>;
const ll INF = (1LL << 61);
ll mod = 1000000007;



signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	string N; cin >> N;
	bool ok = false, ok2 = false;
	for (int i = 0; i < (int)N.size(); i++) {
		if (N[i] == '4')ok = true;
		if (N[i] == '6')ok2 = true;
	}
	if (ok && ok2)cout << "Beautiful" << endl;
	else cout << "..." << endl;
	return 0;
}