using System;

using System.Collections.Generic;

​

public class Program

{

    Stack<int> main = new Stack<int>();

    Stack<int> track = new Stack<int>();

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var inputString = Console.ReadLine();

        bool output = IsPalindrome(inputString);

        Console.WriteLine(output);

    }

​

    public static bool IsPalindrome(string value)

    {

        int min = 0;

        int max = value.Length - 1;

        while (true)

        {

            if (min > max)

            {

                return true;

            }

​

            char a = value[min];

            char b = value[max];

            if (char.ToLower(a) != char.ToLower(b))

            {

                return false;

            }

​

            min++;

            max--;

        }

    }

}