Multidimensional Arrays - 03. Maximal Sum

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

namespace Advanced
{
    class Program
    {
        static void Main(string[] args)
        {
            var dimentions = Console.ReadLine()
                .Split(new[] { ' '}, StringSplitOptions.RemoveEmptyEntries)
                .Select(int.Parse)
                .ToArray();

            int rows = dimentions[0];
            int cols = dimentions[1];

            var matrix = new int[rows, cols];

            for (int row = 0; row < rows; row++)
            {
                var currentRow = Console.ReadLine()
                .Split(new[] { ' '}, StringSplitOptions.RemoveEmptyEntries)
                .Select(int.Parse)
                .ToArray();

                for (int col = 0; col < cols; col++)
                {
                    matrix[row, col] = currentRow[col];
                }
            }

            int maxSum = int.MinValue;
            int maxRowIndex = 0;
            int maxColIndex = 0;

            for (int row = 0; row < matrix.GetLength(0) - 2; row++)
            {
                for (int col = 0; col < matrix.GetLength(1) - 2; col++)
                {
                    var currentSum = 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 (currentSum > maxSum)
                    {
                        maxSum = currentSum;
                        maxRowIndex = row;
                        maxColIndex = col;
                    }
                }
            }
            Console.WriteLine($"Sum = {maxSum}");
            Console.WriteLine($"{matrix[maxRowIndex, maxColIndex]} {matrix[maxRowIndex, maxColIndex + 1]} {matrix[maxRowIndex, maxColIndex + 2]}");
            Console.WriteLine($"{matrix[maxRowIndex + 1, maxColIndex]} {matrix[maxRowIndex + 1, maxColIndex + 1]} {matrix[maxRowIndex + 1, maxColIndex + 2]}");
            Console.WriteLine($"{matrix[maxRowIndex + 2, maxColIndex]} {matrix[maxRowIndex + 2, maxColIndex + 1]} {matrix[maxRowIndex + 2, maxColIndex + 2]}");

        }
    }
}