using System;

public class Program

{

    public static void Main()

    {

        int sum=0;

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

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

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

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

        while (num2<=num1)

        {

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

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

        }

        for(int i=num1 ; i <= num2 ; i++)

        {

            sum=sum+i;

            Console.Write("{0} ",i);

            if(i==num2)

            {

                break;

            }

            Console.Write("+ ");

         }

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

    }

}