using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello!!");

        string input = Console.ReadLine();

        Console.WriteLine("You are checking " + input);

        for (int i = 0; i < input.Length / 2; i++)

        {

            if (input[i] != input[input.Length - i - 1])

            {

                Console.WriteLine("This is not a palindrome");

                return;

            }

        }

        Console.WriteLine("This is a palindrome");

    }

}