using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Въведи произволен низ!");

        string b = Console.ReadLine(); 

        string s = b.ToLower();

        bool palindrome = true;

        int n = s.Length; 

        for(int i = 0; i < n / 2; i++)

        {

            if(s[i] != s[n - 1 - i]) 

                palindrome = false;

        }

        if(palindrome == true)

        {

            Console.WriteLine(s + " is a palindrome.");

        }

        else

            Console.WriteLine(s + " is not a palindrome.");

    }

}