using System;

public class Program

{

    public static void Main()

    {

        int sum = 0;

        int i=0;

        while (i<=100 )

        {

            i++;

            if(i % 2 != 0)

            {

                sum += i;

            }

        }

        Console.WriteLine(sum);

            Console.WriteLine("Enter something");

            string somethin = Console.ReadLine();

        while (somethin != "quit")

        {

            string ledle= somethin.ToUpper();

            Console.WriteLine(ledle);

            somethin = Console.ReadLine();

        }   

    }

}