using System;

public class Program

{

    public static void Main()

    {

        Double num1 = 100;

        Double num2 = 200;

        Double num3 = 300;

        Double numsum = 0;

        double avg =0 ;

        Console.WriteLine("Num1 =");

        num1=double.Parse(Console.ReadLine());

        Console.WriteLine("Num2 =");

        num2= double.Parse(Console.ReadLine());

        Console.WriteLine("Num3 =");

        num3= double.Parse(Console.ReadLine());

        numsum = num1 + num2 + num3;

        avg = numsum/3;

        Console.WriteLine("sum of the 3 numbers =" + numsum);

        Console.WriteLine("Avg of the 3 numbers = " + avg);

    }

}