using System;

public class Program

{

    public static void Main()

    {

        double ns, sf, st;

         int nt;

    sf=0;

​

        Console.WriteLine("Hasta que numero desea sumar?");

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

   for (ns=1; ns<=nt; ns++)

     {

       st=(Math.Pow(ns,ns));

       sf=sf+st;

        }

        Console.WriteLine("------------------");

      Console.WriteLine("La suma total es={0}", sf);

    }

}