package codeup100;

import java.util.Scanner;

public class c1046 {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

String[] arr = sc.nextLine().split(" ");

sc.close();

long num1 = Integer.parseInt(arr[0]);

long num2 = Integer.parseInt(arr[1]);

long num3 = Integer.parseInt(arr[2]);

System.out.printf("%d\n%.1f", num1+num2+num3, (double) (num1+num2+num3)/3);

}

}