using System;

using System.Text;

using System.Linq;

public class Program

{

    public const int BLOCK_SIZE = 4;

    public static void Main()

    {

            var text =

                "Symmetric algorithms are pretty fast";

​

            var result = GetBlocks(text);

​

            var output = String.Join(" ", result);

​

            Console.Write(output);

​

    }

​

    public static uint[] GetBlocks(string text)

    {

            var bytes = Encoding.ASCII.GetBytes(text);

​

            var blocksCount = (int)Math.Ceiling(bytes.Count() / (double)BLOCK_SIZE);

​

            var result = new uint[blocksCount];

​

            for (int i = 0; i < blocksCount; i++)

            {

                result[i] = ToUInt32(bytes.Skip(i * BLOCK_SIZE).Take(BLOCK_SIZE).ToArray());

            }

​

            return result;

    }

    public static UInt32 ToUInt32(byte[] bytes)

    {

        UInt32 result = 0;

​

        for (int i = 0; i < 4; i++)

        {

            result += (UInt32) Math.Pow(256, 3 - i)*bytes[i];

        }

​

        return result;

    }

}