//
//	Name:	PosAvg.java
//
//	...
//	Goal:	Read 20 positives and out avg, exit when 0 reads
//

import java.util.Scanner;

class PosAvg
{
	public static void main(String[] args)
	{
		Scanner kb = new Scanner(System.in);
		int num;
		int sum = 0;
		int count = 0;
		double avg;
		boolean go = true;

		for(int i=0; i<20 && go; i++)
		{
			num = kb.nextInt();
			//System.out.println("num = " + num);
			if( num==0)
				go = false;
			else
			{
				sum = sum + num;
				count ++;
			}
		}
		System.out.println("sum = " + sum);
		System.out.println("count = " + count);
		avg = (double)sum / count;
		System.out.println("avg = " + avg);

		System.out.println("\n\n\nDone.\n\n");
	}
}