Problem:
Score : 100 points

Problem Statement

Dolphin loves programming contests. Today, he will take part in a contest in AtCoder.

In this country, 24-hour clock is used. For example, 9:00 p.m. is referred to as "21 o'clock".

The current time is A o'clock, and a contest will begin in exactly B hours.
When will the contest begin? Answer in 24-hour time.

Constraints

0 \leq A,B \leq 23

A and B are integers.

Input

The input is given from Standard Input in the following format:

A B

Output

Print the hour of the starting time of the contest in 24-hour time.

Sample Input 1

9 12

Sample Output 1

21

In this input, the current time is 9 o'clock, and 12 hours later it will be 21 o'clock in 24-hour time.

Sample Input 2

19 0

Sample Output 2

19

The contest has just started.

Sample Input 3

23 2

Sample Output 3

1

The contest will begin at 1 o'clock the next day.

Solution in Common Lisp (SBCL 1.1.14) (judge verdict: Accepted)

(defun split-with (string &key (delimiterp #'(lambda (c) (char= c #\Space))))
  (loop :for beg = (position-if-not delimiterp string)
        :then (position-if-not delimiterp string :start (1+ end))
        :for end = (and beg (position-if delimiterp string :start beg))
        :when beg :collect (subseq string beg end)
        :while end))

(let* ((lst (split-with (read-line)))
       (a (parse-integer (car lst)))
       (b (parse-integer (car (cdr lst)))))
  (format t "~d~%" (mod (+ a b) 24)))