using System;

public class Program

{

    public static void Main()

    {   

        int soucet = 0;

        Console.Write("Zadejte libovolné celé číslo:  ");

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

        while (cislo > 0)

        {

            Console.WriteLine("Soucet = {0} + {1}", soucet, cislo);

            soucet = soucet + cislo;

            cislo = cislo - 1;

        }

        Console.WriteLine("Soucet = {0}", soucet);

    }

}