Space Station Establishment

using System;
using System.Linq;

namespace SpaceStationEstablishment
{
    class Program
    {
        static void Main(string[] args)
        {
            var row = int.Parse(Console.ReadLine());

            var matrix = new char[row][];

            var playerRow = -1;
            var playerCol = -1;

            for (int i = 0; i < row; i++)
            {
                var col = Console.ReadLine().ToCharArray();

                matrix[i] = col;

                if (matrix[i].Contains('S'))
                {
                    playerRow = i;
                    playerCol = Array.IndexOf(matrix[i], 'S');
                }
            }

            var energy = 0;

            while (energy < 50)
            {
                var command = Console.ReadLine();

                matrix[playerRow][playerCol] = '-';

                switch (command)
                {
                    case "up": playerRow--; break;
                    case "down": playerRow++; break;
                    case "left": playerCol--; break;
                    case "right": playerCol++; break;
                }

                if (IsInMatrix(matrix, playerRow, playerCol))
                {
                    if (Char.IsDigit(matrix[playerRow][playerCol]))
                    {
                        energy += int.Parse(matrix[playerRow][playerCol].ToString());
                    }
                    else if (matrix[playerRow][playerCol] == 'O')
                    {
                        matrix[playerRow][playerCol] = '-';

                        for (int i = 0; i < row; i++)
                        {
                            if (matrix[i].Contains('O'))
                            {
                                playerRow = i;
                                playerCol = Array.IndexOf(matrix[i], 'O');
                            }
                        }
                    }
                    matrix[playerRow][playerCol] = 'S';
                }
                else
                {
                    Console.WriteLine("Bad news, the spaceship went to the void.");
                    Console.WriteLine($"Star power collected: {energy}");
                    PrintMatrix(matrix);
                    return;
                }
            }
            Console.WriteLine("Good news! Stephen succeeded in collecting enough star power!");
            Console.WriteLine($"Star power collected: {energy}");
            PrintMatrix(matrix);
        }

        private static void PrintMatrix(char[][] matrix)
        {
            foreach (var row in matrix)
            {
                Console.WriteLine($"{string.Join("", row)}");
            }
            return;
        }

        public static bool IsInMatrix(char[][] matrix, int row, int col)
        {
            if (row >= 0 && row < matrix.Length && col >= 0 && col < matrix[row].Length)
            {
                return true;
            }
            return false;
        }
    }
}