/*  --------------------------------------
  	while•Ά(2)@‡Œv‚Ζ•½‹Ο
   ---------------------------------------  */
import java.util.*;
public class While_02_goukei {
	public static void main(String[] args) {
		
		Scanner sc=new Scanner(System.in);
		
		int kazu,goukei=0,kensu=0;
		double heikin;
		
		System.out.print("”‚π“ό‚κ‚Δ‰Ί‚³‚’i‚O‚ŏI—Ήj\n-->");
		kazu = sc.nextInt();
		
		while ( kazu!=0 ) {
			
			goukei=goukei+kazu;
			kensu++;
			
			System.out.print("-->");
			kazu = sc.nextInt();
		}
		
		heikin=(double)goukei/kensu;
		System.out.print("\n‡Œv"+goukei);
		System.out.print("\nŒ”"+kensu);
		System.out.print("\n•½‹Ο"+heikin);
	}
}