import java.util.*;

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

        int flg4 = 0;
        int flg6 = 0;
        for(int i = 0; i < n.length(); i++) {
            String tmp = String.valueOf(n.charAt(i));
            if(tmp.equals("4")) {
                flg4 += 1;
            }
            if(tmp.equals("6")) {
                flg6 += 1;
            }
        }

        if(flg4 > 0 && flg6 > 0) {
            System.out.println("Beautiful");
        }else {
            System.out.println("...");
        }


    }
}