Help me in solving DONDRIVE problem

help
,
1

My issue

can you help me to solve this problem

My code

#include <stdio.h>

int main(void) {
	int m,n,p;
	scanf("%d %d",&m,&n);
	p=m-n;
	printf("%d",p);

}

Learning course: 500 difficulty rating
Problem Link: Donation Drive Practice Problem in - CodeChef