bestSum bestCol bestRow

using System;
using System.Linq;
using System.Collections.Generic;
public class Program
{
    public static void Main()
    {
		int[,] mn =
		{
			{0, 2, 4, 0, 9, 5},
			{7, 1, 3, 3, 2, 1},
			{1, 3, 9, 8, 5, 6},
			{4, 6, 7, 9, 1, 0},
		};
		int bestSum = int.MinValue;
		int bestCol = 0;
		int bestRow = 0;
		for(int row = 0; row < mn.GetLength(0) - 1 ; row++)
		{
			for(int col = 0; col < mn.GetLength(1) - 1; col++)
			{
				int sum = mn[row, col] + mn[row+1, col] + mn[row, col+1] + mn[row+1, col+1];
				if(sum > bestSum)
				{
					bestRow = row;
					bestCol = col;
					bestSum = sum;
				}
			}
		}
		Console.WriteLine("The best platform is:");
		Console.WriteLine(" {0}, {1}", mn[bestRow, bestCol], mn[bestRow, bestCol+ 1]);
		Console.WriteLine(" {0}, {1}", mn[bestRow + 1, bestCol], mn[bestRow + 1, bestCol + 1]);
		Console.WriteLine("The best sum is: {0}", bestSum);
	}
}