02.MaximalSum

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

    class maximalSum
    {
        static void Main()
        {
            string [] size = Console.ReadLine().Split();
            int rows = int.Parse(size[0]);
            int cols = int.Parse(size[1]);

            int[,] matrix = new int[rows, cols];

            for (int row = 0; row < rows; row++)
            {
                string[] numbers = Console.ReadLine().Split();
                for (int col = 0; col < cols; col++)
                {
                    matrix[row, col] = int.Parse(numbers[col]);
                }
            }

            int bestSum = int.MinValue;
            int sum = 0;
            int bestRow = 0;
            int bestCol = 0;

            for (int row = 0; row < rows - 2; row++)
            {
                for (int col = 0; col < cols - 2; col++)
                {
                    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("The best platform is:");
            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]);
            Console.WriteLine("The maximal sum is: {0}", bestSum);

        }
    }