using System;

public class Program

{

    public static void Main()

    {

        var str = "abcba";

        bool isPalindrome = true;

        int indexFromBehind = str.Length - 1;

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

            Console.WriteLine("-------------------");

            Console.WriteLine(i + ": " + str[i]);

            Console.WriteLine(indexFromBehind + ": " + str[indexFromBehind]);

            Console.WriteLine("-------------------");

            if(str[i] != str[indexFromBehind]){

                isPalindrome = false;

            }

            indexFromBehind--;

        }

        Console.WriteLine(isPalindrome);

    }

}