CatchTheBits

using System;

class CatchTheBits
{
    static void Main()
    {
        int n = int.Parse(Console.ReadLine());
        int step = int.Parse(Console.ReadLine());
        int[] bits = new int[n];

        for (int i = 0; i < n; i++)
        {
            bits[i] = int.Parse(Console.ReadLine());
        }

        int bytes = n * 8;

        string all = "";

        for (int i = 0; i < n; i++)
        {
            all += Convert.ToString(bits[i], 2).PadLeft(8, '0');
        }

        int stepPos = 1;
        string result = "";

        for (int i = 0; i < all.Length; i++)
        {
            result += all[stepPos];
            stepPos += step;

            if (stepPos > bytes)
            {
                break;
            }
            else if(stepPos == all.Length)
            {
                result += '0';
                break;
            }
        }

        int pad = 0;

        while(pad < result.Length)
        {
            pad += 8;
        }
        result = result.PadRight(pad, '0');

        if (result.Length > 8)
        {
            string num = "";
            int count = 1;

            for (int i = 0; i < result.Length; i++)
            {
                if (i < count * 8)
                {
                    num += result[i];
                }

                if (num.Length == 8)
                {
                    Console.WriteLine(Convert.ToInt64(num, 2));
                    num = "";
                    count++;
                }
            }
        }
        else
        {
            Console.WriteLine(Convert.ToInt32(result, 2));
        }
    }
}