MaximalSumMatrix

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

namespace ConsoleApplication7
{
    class Program
    {

        static void Main(string[] args)
        {
            string[] inputSize = Console.ReadLine().Split(' ');
            int sizeCols = int.Parse(inputSize[0]);
            int sizeRows = int.Parse(inputSize[1]);
            int[,] matrix = new int[sizeCols, sizeRows];
            for (int i = 0; i < sizeCols; i++)
            {
                string[] inputLine = Console.ReadLine().Split(' ');
                for (int j = 0; j < sizeRows; j++)
                {
                    matrix[i, j] = int.Parse(inputLine[j]);
                }
            }
            //for (int i = 0; i < matrix.GetLength(0); i++)
            //{
            //    for (int k = 0; k < matrix.GetLength(1); k++)
            //    {
            //        Console.Write(matrix[i, k] +"|");
            //    }
            //    Console.WriteLine();
            //}
            int bestSum = int.MinValue;
            int bestRow = 0;
            int bestCol = 0;
            for (int row = 0; row < matrix.GetLength(0) - 2; row++)
            {
                for (int col = 0; col < matrix.GetLength(1) - 2; col++)
                {
                    int sum = matrix[row, col] + matrix[row, col + 1] + matrix[row, col + 2] + matrix[row + 1, col] + matrix[row + 1, col + 1] + matrix[row + 1, col + 2] + matrix[row + 2, col] + matrix[row + 2, col + 1] + matrix[row + 2, col + 2];
                    if (sum > bestSum)
                    {
                        bestSum = sum;
                        bestRow = row;
                        bestCol = col;
                    }
                }
            }
            Console.WriteLine("Sum = {0}", bestSum);
            Console.WriteLine("  {0} {1} {2}", matrix[bestRow, bestCol], matrix[bestRow, bestCol + 1], matrix[bestRow, bestCol + 2]);
            Console.WriteLine("  {0} {1} {2}", matrix[bestRow + 1, bestCol], matrix[bestRow + 1, bestCol + 1], matrix[bestRow + 1, bestCol + 2]);
            Console.WriteLine("  {0} {1} {2}", matrix[bestRow + 2, bestCol], matrix[bestRow + 2, bestCol + 1], matrix[bestRow + 2, bestCol + 2]);
        }
    }
}