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 Rust (1.15.1) (judge verdict: Accepted)

use std::io;

fn main() {
    let ab: Vec<u8> = read_input_vec();
    println!("{}", (ab[0] + ab[1]) % 24);
}

fn read_input<T: std::str::FromStr>() -> T {
    let mut input = String::new();
    io::stdin().read_line(&mut input).unwrap();
    return input.parse::<T>().ok().unwrap();
}

fn read_input_vec<T: std::str::FromStr>() -> Vec<T> {
    let mut input = String::new();
    io::stdin().read_line(&mut input).unwrap();
    return input
        .split_whitespace()
        .map(|x| x.parse::<T>().ok().unwrap())
        .collect();
}