using System;

public class Program

{

    public static void Main()

    {

        double n1,n2,n3,sum,product;

        Console.WriteLine("enter n1");

        n1=Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("enter n2");

        n2=Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("enter n3");

        n3=Convert.ToDouble(Console.ReadLine());

        sum=n1+n2+n3;

        Console.WriteLine(sum);

        product=n1*n2*n3;

        Console.WriteLine(product);

    }

}