import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String n = sc.next();
		sc.close();

		if (n.indexOf("4") != -1 && n.indexOf("6") != -1) {
			System.out.println("Beautiful");
		} else {
			System.out.println("...");
		}
	}
}