Bit Inverter

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;


class Program
{
    static List<string> splitEvery8Bits(string bitwize)
    {
        var list = new List<string>();
        int interval = 8;
        int howManyTimes = bitwize.Length / interval;
        int start = 0;
        for (int i = 0; i < howManyTimes; i++)
        {
            list.Add(bitwize.Substring(start, interval));
            start += interval;
        }
        return list;
    }
    static void Main(string[] args)
    {
        byte n = byte.Parse(Console.ReadLine());
        byte step = byte.Parse(Console.ReadLine());
        StringBuilder sbTheGreat = new StringBuilder(n * 8);

        for (int i = 0; i < n; i++)
        {
            byte numberTOInsert = byte.Parse(Console.ReadLine());
            string representBits = Convert.ToString(numberTOInsert, 2).PadLeft(8, '0');
            sbTheGreat.Append(representBits);
        }

        string temp = sbTheGreat.ToString();
        char[] ableTOChange = temp.ToCharArray();
        int position = 0;

        while (position < ableTOChange.Length)
        {
            if (ableTOChange[position] == '1')
            {
                ableTOChange[position] = '0';
            }
            else if (ableTOChange[position] == '0')
            {
                ableTOChange[position] = '1';
            }
            position += step;
        }

        temp = new string(ableTOChange);

        var ourList = splitEvery8Bits(temp);

        foreach (var item in ourList)
        {
            byte turnAround = Convert.ToByte(item, 2);
            Console.WriteLine(turnAround);
        }
    }
}