public class Einzelzeichen {

    public static void main(String[] args) {

        String readLine;
        char eingabe;
        int ascii;

        Scanner scan = new Scanner(System.in);

        readLine = scan.nextLine();
        eingabe = readLine.charAt(0);
        ascii = eingabe;

        if(ascii >= '0' && ascii <= 'f'){

            if(ascii >= '0' && ascii <= '9'){
                System.out.println("Hexadezimale Ziffer");

                if(ascii == '0' || ascii == '1'){
                    System.out.println("binäre Ziffer");
                }
                if(ascii != '8'){
                    System.out.println("oktale Ziffer");
                }

            }

            if(ascii >= 'A' && ascii <= 'Z'){
                System.out.println("Großbuchstabe");
            }

            if(ascii >= 'A' && ascii <= 'F' || ascii >= 'a' && ascii <= 'f'){
                    System.out.println("Hexadezimale Ziffer");
            }
        }

        else{
            System.out.println("Unbekannt");
        }


    }

}