Multidimensional Arrays - 6. Jagged-Array Modification

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

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

            var jagged = new int[rows][];

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

                jagged[row] = currentRow;

            }

            while (true)
            {
                var input = Console.ReadLine();

                if (input == "END")
                {
                    break;
                }

                var line = input.Split().ToArray();

                var command = line[0];
                int commandRow = int.Parse(line[1]);
                int commandCol = int.Parse(line[2]);
                int value = int.Parse(line[3]);

                if (commandRow < 0
                    || commandRow >= jagged.Length
                    || commandCol < 0
                    || commandCol >= jagged.Length)
                {
                    Console.WriteLine("Invalid coordinates");
                    continue;
                }

                switch (command)
                {
                    case "Add":
                        jagged[commandRow][commandCol] += value;
                        break;

                    case "Subtract":
                        jagged[commandRow][commandCol] -= value;

                        break;
                }
            }

            foreach (var row in jagged)
            {
                Console.WriteLine(string.Join(" ", row));
            }
        }
    }
}