[백준] 10156번 : 과자 - Java(자바)

https://www.acmicpc.net/problem/10156

import java.util.*;
public class Main {
    public static void main(String args[]) {
        Scanner s=new Scanner(System.in);
        int k=s.nextInt();
        int n=s.nextInt();
        int m=s.nextInt();
        
        int sum=k*n-m;
        
        if(sum>0) System.out.print(sum);
        else System.out.print(0);
    }
}