contact list

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Threading;

namespace ConsoleApp1
{
    class Exam
    {
        static void Main(string[] args)
        {
            List<string> names = Console.ReadLine().Split().ToList();

            string[] command = Console.ReadLine().Split().ToArray();

            while (command[0] != "Print")
            {
                if (command[0] == "Add")
                {
                    if (names.Contains(command[1]))
                    {
                        int index = int.Parse(command[2]);

                        if (index >= 0 && index < names.Count)
                        {
                            names.Insert(index, command[1]);
                        }
                    }
                    else
                    {
                        names.Add(command[1]);
                    }
                }
                if (command[0] == "Remove")
                {
                    int index = int.Parse(command[1]);

                    if (index >= 0 && index < names.Count)
                    {
                        names.RemoveAt(index);
                    }
                }
                if (command[0] == "Export")
                {
                    int startIndex = int.Parse(command[1]);
                    int count = int.Parse(command[2]);

                    if (count > names.Count)
                    {
                        count = names.Count - startIndex;
                    }

                    List<string> export = names.GetRange(startIndex, count);
                    Console.WriteLine(string.Join(" ", export));
                }

                command = Console.ReadLine().Split().ToArray();
            }

            if (command[1] == "Normal")
            {
                Console.WriteLine($"Contacts: {string.Join(" ", names)}");
            }
            else
            {
                names.Reverse();
                Console.WriteLine($"Contacts: {string.Join(" ", names)}");
            }
        }
    }
}