using System;

public class Program

{

    public static void Main()

    {

        string[] blab = new string[5];

        blab[5] = 5th string;

        // 2

        //I flipped all "no" to "yes" AND all "yes" to "no"

        string Input;

        Input = Console.ReadLine();

        Input = Input.ToLower();

        Input = Input.Replace("no","Yes");

        Input = Input.Replace("yes","No");

        Console.WriteLine("Flip Flop: " + Input);

        //3

        string FS, SS;

        Console.WriteLine("Enter your first string:");

        FS = Console.ReadLine();

        Console.WriteLine("Enter your second string:");

        SS = Console.ReadLine();

        FS = FS.ToLower();

        SS = SS.ToLower();

        FS = FS.Trim();

        SS = SS.Trim();

        if ( String.Equals(FS, SS) )

            Console.WriteLine("Equal!");

        else 

            Console.WriteLine("Not Equal, try again!");

    }

}