import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        String line = scan.nextLine();
        String [] list = line.split(",");
        int array[] = new int[list.length];
        int sum = 0;
        for (int i = 0; i <array.length ; i++) {
            array[i] = Integer.parseInt(list[i]);
            sum = sum+array[i];
        }
        System.out.println(array.length);
        double average = 0;
        int counter = array.length;
        average = (sum/counter);
        System.out.println(average);
    }
}