using System;

public class Program

{

    public static void Main()

    {

        int num1, num2, num3, sum;

        Console.Write("Input number 1 : ");

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

        Console.Write("Input number 2 : ");

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

        Console.Write("Input number 3 : ");

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

        sum = num1+num2+num3;

        Console.WriteLine("\nSummary of {0}, {1} and {2} is {3}", num1, num2, num3, sum);

        Console.WriteLine("Average is {0:n2}",sum/3.0 );

    }

}