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 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<stdio.h>

int KETASUU(int K){
    int keta = 0;
    while(K>=0){
        keta += 1;
        K = K/10;
    }
    return keta;
}

int max(int A,int B){

    if(A>B){return A;}
    else{return B;}

}

int main(void){
    int Max,Aketa,Bketa=0;
    int N,i;
    scanf("%d",&N);

    for(i = 1;i <= N;i++){
        if( N % i == 0){
            Aketa = KETASUU(i); Bketa = KETASUU(N/i);
           
            if(Max <  max(Aketa,Bketa)){
                Max =  max(Aketa,Bketa);
            }
        }

    }
    printf("%d",Max);

}