Box of Bricks

/**
 *
 */

/**
 * @author ak47suk1
 *
 */
import java.util.*;
public class BoxOfBricks {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int caseCounter=0;
        Scanner s = new Scanner(System.in);
        while (s.hasNext()){
            int hi = s.nextInt();
            if (hi != 0){

                ArrayList<Integer> bricks1 = new ArrayList<Integer>();

                for (int A = 0; A < hi; A++) {
                    bricks1.add(s.nextInt());}



            ++caseCounter;
                System.out.println("Case #" + caseCounter + ": "
                        + getMinNum(bricks1));

            }
        }
        }


    public static Integer getMinNum(ArrayList<Integer> bricks1){

        Integer sum = 0, sum2=0;
        for (int B = 0; B < bricks1.size(); B++) {
            sum += bricks1.get(B);
        }

        int average = sum/bricks1.size();


        for (int C = 0; C < bricks1.size(); C++) {
            sum2 += Math.abs(average - bricks1.get(C));
        }
        return sum2/2;

    }

}