MaxPlatform3X3

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

namespace MaxPlatform3_3
{
    class Program
    {
        static void Main()
        {
            int[] dimennsions = Console.ReadLine().Split().Select(int.Parse).ToArray();
            int rows = dimennsions[0];
            int cols = dimennsions[1];
            int[][] matrix = new int[rows][];
            for (int row = 0; row < rows; row++)
            {
                matrix[row] = Console.ReadLine().Split().Select(int.Parse).ToArray();
            }
            long maximumSum = int.MinValue;
            int maxRow = 0;
            int maxCol = 0;
            for (int row = 0; row < rows-2; row++)
            {
                for (int col = 0; col < cols - 2; col++)
                {
                    //ckeck cells
                    long sum = (long)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 > maximumSum)
                    {
                        maximumSum = sum;
                        maxRow = row;
                        maxCol = col;
                    }
                }

            }
            Console.WriteLine(maximumSum);
            for (int row = maxRow; row < maxRow+3; row++)
            {
                for (int col = maxCol; col < maxCol+3; col++)
                {
                    Console.Write(matrix[row][col] + " ");
                }
                Console.WriteLine();
            }
        }
    }
}