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

namespace ConsoleApplication9
{
    class Program
    {
        public static int[,] key { get; set; }

        public static string CreatetheCipher(string plainText, int rowsize, int colsize)
        {
            char[] chArray1 = plainText.ToCharArray();
            int[,] numArray = new int[3, 3];
            int num1 = 0;
            int index1 = 0;
            int num2 = Enumerable.Count<char>((IEnumerable<char>)chArray1);
            for (int index2 = 0; index2 < rowsize; ++index2)
            {
                for (int index3 = 0; index3 < colsize; ++index3)
                {
                    if (index1 < num2)
                    {
                        if (char.IsUpper(chArray1[index1]))
                            num1 = Convert.ToInt32((int)chArray1[index1] - 65);
                        numArray[index2, index3] = num1;
                        ++index1;
                    }
                    else
                        numArray[index2, index3] = 0;
                }
            }
            int num3 = 0;
            char[,] chArray2 = new char[3, 3];
            for (int index2 = 0; index2 < rowsize; ++index2)
            {
                for (int index3 = 0; index3 < colsize; ++index3)
                {
                    for (int index4 = 0; index4 < 3; ++index4)
                        num3 += key[index2, index4] * numArray[index4, index3];
                    char ch = (char)num3;
                    chArray2[index2, index3] = ch;
                    num3 = 0;
                }
            }
            string str = string.Empty;
            for (int index2 = 0; index2 < 3; ++index2)
            {
                for (int index3 = 0; index3 < 3; ++index3)
                    str = str + (object)chArray2[index2, index3];
            }
            return str;
        }

        static void Main(string[] args)
        {
            String x = "SWEETLORD-OlUXOmMhEiQO";
            Console.WriteLine(CreatetheCipher(x, 3, 5));
            Console.ReadKey();
        }
    }
}