using System;

public class Program

{

    public static void Main()

    {

    //1

        Console.WriteLine("Hello. Please Enter a String");

        string strOne = Console.ReadLine();

            strOne = strOne.Trim();

            strOne = strOne.ToUpper();

        Console.WriteLine("Please Enter a Second String");

        string strTwo = Console.ReadLine();

            strTwo = strTwo.Trim();

            strTwo = strTwo.ToUpper();

        if (strOne == strTwo)

        {

        Console.WriteLine("Equal");

        }

        else

        {

        Console.WriteLine("Not Equal"); 

        }

    //2

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

        int intYear = myString.IndexOf("year");

        myString = myString.Insert(intYear + 4, "s");

        Console.WriteLine("Updated String: " + myString);

    }

}