using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("vavedi chislo");

        string input= Console.ReadLine();

        List<int> list=input.Split(',').Select(int.Parse).ToList();

        Console.WriteLine("lista e:");

        foreach (var x in list)

        {

            Console.WriteLine(x+ " ");

        }

        int sum=list.Sum();

        double average=list.Average();

        Console.WriteLine("sumata e:"+ sum);

        Console.WriteLine("srednoto aritmetichno e:"+ average);

​

    }

}