01.World_Tour

using System;
using System.Linq;

namespace _01.World_Tour
{
    class Program
    {
        static void Main(string[] args)
        {

            string travelStops = Console.ReadLine();
            string instructions = Console.ReadLine();
            string message = travelStops;

            while (instructions != "Travel")
            {
                string[] cmd = instructions.Split(':').ToArray();
                var cmd1 = cmd[0]; //Add Stop
                var cmd2 = cmd[1]; //7
                var cmd3 = cmd[2]; //Rome

                if (cmd1 == "Add Stop")
                {
                    if (int.Parse(cmd2) >= 0 && int.Parse(cmd2) <= message.Length - 1)
                    {
                        string editedString = message.Insert(int.Parse(cmd2), cmd3);
                        message = editedString;
                        Console.WriteLine(message);
                    }
                    else
                    {
                        Console.WriteLine(message);
                    }
                }

                if (cmd1 == "Remove Stop")
                {
                    if ( int.Parse(cmd3) >= 0 && int.Parse(cmd3) <= message.Length - 1)
                    {
                        string editedString = message.Remove(int.Parse(cmd2), int.Parse(cmd3) - int.Parse(cmd2) + 1);
                        message = editedString;
                        Console.WriteLine(message);
                    }
                    else
                    {
                        Console.WriteLine(message);
                    }
                }

                if (cmd1 == "Switch")
                {
                    if (message.Contains(cmd2))
                    {
                        string editedString = message.Replace(cmd2, cmd3);
                        message = editedString;
                        Console.WriteLine(message);
                    }
                    else
                    {
                        Console.WriteLine(message);
                    }
                }
                instructions = Console.ReadLine();
            }
            Console.WriteLine($"Ready for world tour! Planned stops: {message}");
        }
    }
}