List Operations

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

namespace ListOfOperations
{
    class Program
    {
        public static void Main()
        {
            List<int> listOfIntegers =
                Console.ReadLine()
                .Split()
                .Select(int.Parse)
                .ToList();

            while (true)
            {
                string lineInput = Console.ReadLine();
                if (lineInput == "End")
                {
                    break;
                }

                string[] commandInput = lineInput.Split();

                switch (commandInput[0])
                {
                    case "Add":
                        listOfIntegers.Insert
                            (listOfIntegers.Count,
                            int.Parse(commandInput[1]));
                        break;

                    case "Insert":
                        listOfIntegers.Insert(
                            int.Parse(commandInput[2]),
                            int.Parse(commandInput[1]));
                        break;

                    case "Remove":
                        if (int.Parse(commandInput[1]) < 0 ||
                            int.Parse(commandInput[1])>listOfIntegers.Count)
                        {
                            Console.WriteLine("Invalid index");
                        }
                        else
                        {
                            listOfIntegers.RemoveAt(int.Parse(commandInput[1]));
                        }
                        break;

                    case "Shift":
                        if (commandInput[1] == "left")
                        {
                            for (int i = 0; i < int.Parse(commandInput[2]); i++)
                            {
                                int firstIndexElement = listOfIntegers[0];
                                listOfIntegers.RemoveAt(0);
                                listOfIntegers.Insert
                                    (listOfIntegers.Count,
                                    firstIndexElement);
                            }
                        }
                        if (commandInput[1] == "right")
                        {
                            for (int i = 0; i < int.Parse(commandInput[2]); i++)
                            {
                               int lastIndexElement = listOfIntegers[listOfIntegers.Count - 1];
                                listOfIntegers.RemoveAt(listOfIntegers.Count - 1);
                                listOfIntegers.Insert(0, lastIndexElement);
                            }
                        }
                        break;

                    default:
                        break;
                }
            }
            string result = string.Join(" ", listOfIntegers);
            Console.WriteLine(result);
        }
    }
}