C# Fundamentals 16.04.2019 Mid Exam - Easter Shopping

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

namespace _0
{
    class Program
    {
        static void Main(string[] args)
        {
            List<string> shops = Console.ReadLine()
                                 .Split(' ')
                                 .ToList();

            int countCommands = int.Parse(Console.ReadLine());
            for (int i = 0; i < countCommands; i++)
            {
                string[] commands = Console.ReadLine().Split(' ').ToArray();
                string currentCommand = commands[0];

                if (currentCommand == "Include")
                {
                    shops.Add(commands[1]);
                }
                else if (currentCommand == "Visit")
                {
                    string firstOrLast = commands[1];
                    int numberShops = int.Parse(commands[2]);
                    if (0 <= numberShops && shops.Count <= numberShops)
                    {
                        continue;
                    }
                    else if (firstOrLast == "first")
                    {
                        for (int j = 0; j < numberShops; j++)
                        {
                            shops.RemoveAt(0);
                        }
                    }
                    else if (firstOrLast == "last")
                    {
                        for (int k = 0; k < numberShops; k++)
                        {
                            shops.RemoveAt(shops.Count - 1);
                        }
                    }
                }
                else if (currentCommand == "Prefer")
                {
                    int shopIndexOne = int.Parse(commands[1]);
                    int shopIndexTwo = int.Parse(commands[2]);

                    if ((0 <= shopIndexOne && shopIndexOne < shops.Count) &&
                        (0 <= shopIndexTwo && shopIndexTwo < shops.Count))
                    {
                        string firstShop = shops[shopIndexOne];
                        string secondShop = shops[shopIndexTwo];

                        shops.RemoveAt(shopIndexOne);
                        shops.Insert(shopIndexOne, secondShop);
                        shops.RemoveAt(shopIndexTwo);
                        shops.Insert(shopIndexTwo, firstShop);
                    }
                }
                else if (currentCommand == "Place")
                {
                    string shop = commands[1];
                    int shopIndex = int.Parse(commands[2]) + 1;

                    if (0 <= shopIndex && shopIndex < shops.Count)
                    {
                        shops.Insert(shopIndex, shop);
                    }
                }
            }

            Console.WriteLine("Shops left:");
            Console.WriteLine(string.Join(' ', shops));
        }
    }
}