ChangeBits

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

namespace ConsoleApplication2
{
    class Program
    {
        //static bool theCenterOfTheCrossroad(int[] row, int[] column, int i, int j)
        //{
        //    bool b;
        //    if (column.Contains(j))
        //    {

        //    }
        //}
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int step = int.Parse(Console.ReadLine());
            int counter = 0;
            int added = 0;
            string newnumber = string.Empty;
            string bitwise = string.Empty;
            List<string> input = new List<string>();
            string output = string.Empty;
            int checker = 0;
            for (int i = 0; i < n; i++)
            {
                int numberForChange = int.Parse(Console.ReadLine());
                bitwise = Convert.ToString(numberForChange, 2).PadLeft(8, '0');
                input.Add(bitwise);
                counter++;
            }

            foreach (var item in input)
            {
                newnumber += item;
            }
            int f = 0;
            char[] array = newnumber.ToCharArray();
            for (int j = 0; j < counter * 8; j++)
            {
                if ( 1 + (j * step) < counter * 8)
                {
                    f = (j * step);
                if (array[f] == '0')
                {
                    array[f] = '1';
                }
                else
                {
                    array[f] = '0';
                }
                }
                else
                {
                    break;
                }

            }
            Console.WriteLine(array);
            int flushed = 1;

            for (int v = 0; v < counter * 8; v++)
            {
                if (checker != 7)
                {
                    output += array[v];
                    checker++;
                }

                else
                {
                    output += array[v];
                    Console.WriteLine(output);
                    int p = Convert.ToInt32(output, 2);
                    Console.WriteLine(p);
                    output = string.Empty;
                    flushed++;
                    checker = 0;
                }

            }










        }
    }
}