import java.sql.SQLOutput;
import java.util.Arrays;
import java.util.Scanner;
public class PJJJeden {
    public static void main(String[] args) {
        int my_array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
        double sum = 0;
        double count = 0;
        for(int a : my_array){
            count++;
            sum += a;
        }
        System.out.println(sum);
        System.out.println(count);
        System.out.println(sum/count);
    }
}