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 C# (Mono 4.6.2.0) (judge verdict: Runtime Error)

using System;

namespace B_004_57
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            new Logic_A().Start();
           
        }

        public class Logic_A
        {
            public void Start()
            {
                var a = Convert.ToInt32(Console.ReadLine());
                var b = Convert.ToInt32(Console.ReadLine());

                Console.WriteLine((a + b) % 24);
            }
        }
    }
}