def main():
    S = input()[0]
    if S == 'Z':
        print('1st')
    elif S == 'B':
        print('2nd')
    elif S == 'S':
        print('3rd')
    elif S == 'E':
        print('4th')
    else:
        print('Alpha')




if __name__ == '__main__':
    main()