Problem:
Score : 100 points

Problem Statement

How many hours do we have until New Year at M o'clock (24-hour notation) on 30th, December?

Constraints

1≤M≤23

M is an integer.

Input

Input is given from Standard Input in the following format:

M

Output

If we have x hours until New Year at M o'clock on 30th, December, print x.

Sample Input 1

21

Sample Output 1

27

We have 27 hours until New Year at 21 o'clock on 30th, December.

Sample Input 2

12

Sample Output 2

36

Solution in C (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <stdio.h>
int main()
{
    int a,b,c,d,i=1,e=0,f=1,g=0,ret;
    scanf("%d %d",&a,&b);
    ret=scanf("%d-%d",&c,&d);
    if(ret!=2)
    {
        printf("No");
    }
    do
    {
        i=i*10;
        e++;
    }while(i<c);
    do
    {
        f=f*10;
        g++;
    }while(f<d);
    if(e==a&&g==b)
    {
        printf("Yes");
    }
    else
        printf("No");
    return 0;
}