HDOJ 2088 Box of Bricks

import java.util.Scanner;

public class Main{
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
boolean isFirst = true;
while(sc.hasNext()){
int n = sc.nextInt();
if (n==0) {
break;
}
if (isFirst) {
isFirst = false;
}else {
System.out.println();
}
int[] m = new int
;
int sum = 0;
for (int i = 0; i < m.length; i++) {
m[i] = sc.nextInt();
sum += m[i];
}
int average = sum/n;
sum = 0;
int k = 0;
for (int i = 0; i < m.length; i++) {
if (m[i]<average) {
sum += m[i];
k++;
}
}
System.out.println(average*k-sum);
}
}
}