C Program for Assignment Distribution

There are X assignments arranged on a table to be corrected. It has to be distributed equally to Y staff members. The program must print the number of assignments which are left after distributing the assignments equally to the Y staff members.

Example Input/Output 1:
Input:
159 10

Output:
9

Example Input/Output 2:
Input:
346 5

Output:
1

Example Input/Output 3:
Input:
340 20

Output:
0

#include<stdio.h>
#include <stdlib.h>
int main()
{
    int a,b;
    scanf("%d %d",&a,&b);
    printf("%d",a%b);
}