using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Please Enter the 1st string");

        string strOne = Console.ReadLine();

        Console.WriteLine("Please Enter the 2nd string");

        string strTwo = Console.ReadLine();

        string sFirst = strOne.ToUpper().Trim();

        string sTwo = strTwo.ToUpper().Trim();

        if (sFirst == sTwo)

        {

            Console.WriteLine("Equal");

        }

            else

            {

            Console.WriteLine("Not Equal");

            }

        // Second

        string strIU = "Celebrating 200 year of Indiana University";

        string substringToInsert = "s";

        int index = strIU.IndexOf("year");

        string updatedString = strIU.Insert(index + 4, substringToInsert);

        Console.WriteLine(updatedString);

    }

}