LastStop

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

namespace DemoTest_LastStop
{
    class Program
    {
        static void Main(string[] args)
        {
            List<int> numbers = Console.ReadLine()
                 .Split(" ")
                 .Select(int.Parse)
                 .ToList();

            string input = string.Empty;

            while (true)
            {
                input = Console.ReadLine();
                string[] parts = input
                    .Split(" ");

                if(input == "END")
                {
                    break;
                }


                string command = parts[0];

                if (command == "Change")
                {
                    int currentNumber = int.Parse(parts[1]);
                    int changedNumber = int.Parse(parts[2]);

                    int currentNumberIndex = numbers.IndexOf(currentNumber);

                    if (numbers.Contains(currentNumber))
                    {
                        numbers[currentNumberIndex] = changedNumber;
                    }
                }

                if(command == "Hide")
                {
                    int currentNumber = int.Parse(parts[1]);

                    if (numbers.Contains(currentNumber))
                    {
                        numbers.Remove(currentNumber);
                    }
                }

                if(command == "Switch")
                {
                    int firstNumber =int.Parse(parts[1]);
                    int secondNumber = int.Parse(parts[2]);

                    int firstNumberIndex = numbers.IndexOf(firstNumber);
                    int secondNumberIndex = numbers.IndexOf(secondNumber);

                    if(numbers.Contains(firstNumber) && numbers.Contains(secondNumber))
                    {
                        numbers[firstNumberIndex] = secondNumber;
                        numbers[secondNumberIndex] = firstNumber;
                    }
                }

                if(command == "Insert")
                {
                    int index = int.Parse(parts[1]) + 1;
                    int newNumber = int.Parse(parts[2]);

                    if(index >= 0 && index < numbers.Count)
                    {
                        numbers.Insert(index, newNumber);
                    }
                }

                if(command == "Reverse")
                {

                    numbers.Reverse();
                }
            }

            Console.WriteLine(string.Join(" ", numbers));
        }
    }
}