world tour

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


namespace Final_Exam
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();

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

            while (command[0] != "Travel")
            {
                if (command[0] == "Add Stop")
                {
                    //•   Add Stop:{index}:{string}

                    int index = int.Parse(command[1]);
                    if (index >= 0 && index < input.Length)
                    {
                        input = input.Insert(index, command[2]);
                        //Console.WriteLine(input);
                    }
                }
                if (command[0] == "Remove Stop")
                {
                    //•   Remove Stop:{start_index}:{end_index}
                    int start = int.Parse(command[1]);
                    int end = int.Parse(command[2]);

                    if ((start >= 0 && start < input.Length) && end >= 0 && end < input.Length)
                    {
                        input = input.Remove(start, end - start + 1);
                        //Console.WriteLine(input);
                    }
                }
                if (command[0] == "Switch")
                {
                    //•   Switch:{old_string}:{new_string}
                    if (input.Contains(command[1]))
                    {
                        input = input.Replace(command[1], command[2]);
                        //Console.WriteLine(input);
                    }
                }

                Console.WriteLine(input);
                command = Console.ReadLine().Split(':');
            }

            Console.WriteLine($"Ready for world tour! Planned stops: {input}");

        }
    }
}