02. Selling VOL. 2(with Tuple<int,int>)

using System;
using System.Collections.Generic;

namespace _02.Selling
{
    public class Program
    {
        static void Main(string[] args)
        {
            //-----------------Taking the input-----------------------
            int sizeOfsquareMatrix = int.Parse(Console.ReadLine());
            //----------------- Create squareMatrix-------------------
            int rows = sizeOfsquareMatrix;
            int cols = sizeOfsquareMatrix;
            char[,] squareMatrix = new char[rows, cols];
            //--------------- Set Initial Indexes to Player-----------
            int playerRow = -1;
            int playerCol = -1;
            //----------- Create a variable to save the collected money and create a list of array to collect pillars---------------------
            int collectedMoney = 0;
            List<Tuple<int, int>> pillars = new List<Tuple<int, int>>();

            for (int row = 0; row < squareMatrix.GetLength(0); row++)
            {
                char[] inputFill = Console.ReadLine().ToCharArray();

                for (int col = 0; col < squareMatrix.GetLength(1); col++)
                {
                    squareMatrix[row, col] = inputFill[col];
                    if (squareMatrix[row, col] == 'S')
                    {
                        playerRow = row;
                        playerCol = col;
                    }
                    if (squareMatrix[row, col] == 'O')
                    {
                        pillars.Add(new Tuple<int, int>(row, col));
                    }
                }
            }
            bool isInBakery = true;
            while (collectedMoney < 50 && isInBakery)
            {
                string command = Console.ReadLine();
                squareMatrix[playerRow, playerCol] = '-';

                if (command == "up")
                {
                    if (IsValidIndex(playerRow - 1, playerCol, squareMatrix))
                    {
                        playerRow -= 1;
                        if (char.IsDigit(squareMatrix[playerRow, playerCol]))
                        {
                            collectedMoney += int.Parse(squareMatrix[playerRow, playerCol].ToString());
                        }
                        else if (squareMatrix[playerRow, playerCol] == 'O')
                        {
                            squareMatrix[playerRow, playerCol] = '-';
                            foreach (var pillar in pillars)
                            {
                                if (playerRow != pillar.Item1 && playerCol != pillar.Item2)
                                {
                                    playerRow = pillar.Item1;
                                    playerCol = pillar.Item2;
                                }
                            }
                        }
                        squareMatrix[playerRow, playerCol] = 'S';
                    }
                    else
                    {
                        Console.WriteLine("Bad news, you are out of the bakery.");
                        isInBakery = false;
                    }
                }
                else if (command == "down")
                {
                    if (IsValidIndex(playerRow + 1, playerCol, squareMatrix))
                    {
                        playerRow += 1;
                        if (char.IsDigit(squareMatrix[playerRow, playerCol]))
                        {
                            collectedMoney += int.Parse(squareMatrix[playerRow, playerCol].ToString());
                        }
                        else if (squareMatrix[playerRow, playerCol] == 'O')
                        {
                            squareMatrix[playerRow, playerCol] = '-';
                            foreach (var pillar in pillars)
                            {
                                if (playerRow != pillar.Item1 && playerCol != pillar.Item2)
                                {
                                    playerRow = pillar.Item1;
                                    playerCol = pillar.Item2;
                                }
                            }
                        }
                        squareMatrix[playerRow, playerCol] = 'S';
                    }
                    else
                    {
                        Console.WriteLine("Bad news, you are out of the bakery.");
                        isInBakery = false;
                    }
                }
                else if (command == "right")
                {
                    if (IsValidIndex(playerRow, playerCol + 1, squareMatrix))
                    {
                        playerCol += 1;
                        if (char.IsDigit(squareMatrix[playerRow, playerCol]))
                        {
                            collectedMoney += int.Parse(squareMatrix[playerRow, playerCol].ToString());
                        }
                        else if (squareMatrix[playerRow, playerCol] == 'O')
                        {
                            squareMatrix[playerRow, playerCol] = '-';
                            foreach (var pillar in pillars)
                            {
                                if (playerRow != pillar.Item1 && playerCol != pillar.Item2)
                                {
                                    playerRow = pillar.Item1;
                                    playerCol = pillar.Item2;
                                }
                            }
                        }
                        squareMatrix[playerRow, playerCol] = 'S';
                    }
                    else
                    {
                        Console.WriteLine("Bad news, you are out of the bakery.");
                        isInBakery = false;
                    }
                }
                else if (command == "left")
                {
                    if (IsValidIndex(playerRow, playerCol - 1, squareMatrix))
                    {
                        playerCol -= 1;
                        if (char.IsDigit(squareMatrix[playerRow, playerCol]))
                        {
                            collectedMoney += int.Parse(squareMatrix[playerRow, playerCol].ToString());
                        }
                        else if (squareMatrix[playerRow, playerCol] == 'O')
                        {
                            squareMatrix[playerRow, playerCol] = '-';
                            foreach (var pillar in pillars)
                            {
                                if (playerRow != pillar.Item1 && playerCol != pillar.Item2)
                                {
                                    playerRow = pillar.Item1;
                                    playerCol = pillar.Item2;
                                }
                            }
                        }
                        squareMatrix[playerRow, playerCol] = 'S';
                    }
                    else
                    {
                        Console.WriteLine("Bad news, you are out of the bakery.");
                        isInBakery = false;
                    }
                }
            }
            if (collectedMoney >= 50)
            {
                Console.WriteLine("Good news! You succeeded in collecting enough money!");
            }
            Console.WriteLine($"Money: {collectedMoney}");
            PrintMatrix(squareMatrix);
        }

        private static void PrintMatrix(char[,] squareMatrix)
        {
            for (int row = 0; row < squareMatrix.GetLength(0); row++)
            {
                for (int col = 0; col < squareMatrix.GetLength(1); col++)
                {
                    Console.Write(squareMatrix[row, col]);
                }
                Console.WriteLine();
            }
        }

        public static bool IsValidIndex(int row, int col, char[,] squareMatrix)
        {
            return row >= 0 && row < squareMatrix.GetLength(0) && col >= 0 && col < squareMatrix.GetLength(1);
        }
    }
}