using System;

using System.Collections.Generic;

using System.Linq;

​

namespace _02_Command_Interpreter

{

    public class CommandInterpreter

    {

        public static void Main()

        {

            var nums = Console.ReadLine().Split(" \t".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).ToList();

​

            string line = Console.ReadLine();

​

            while (line != "end")

            {

                var tokens = line.Split().ToArray();

​

                string command = tokens[0];

​

                if (command == "reverse")

                {

                    ReverseNums(nums, tokens);

                }

                else if (command == "sort")

                {

                    SortNums(nums, tokens);

                }

                else if (command == "rollLeft")

                {

                    RollLeft(nums, tokens);

                }

                else if (command == "rollRight")

                {

                    RollRight(nums, tokens);

                }

​

                line = Console.ReadLine();

            }

            Console.WriteLine($"[{string.Join(", ", nums)}]");

        }

​

        static void RollRight(List<string> nums, string[] tokens)

        {

            long count = long.Parse(tokens[1]);

            var isCountInvalid = count < 0;

            if (isCountInvalid)

            {

                Console.WriteLine($"Invalid input parameters.");

            }

            else

            {

                for (int i = 0; i < count % nums.Count; i++)

                {

                    var lastElement = nums.Last();

                    nums.RemoveAt(nums.Count - 1);

                    nums.Insert(0, lastElement);

                }

            }

        }

​

        static void RollLeft(List<string> nums, string[] tokens)

        {

            long count = long.Parse(tokens[1]);

            var isCountInvalid = count < 0;

            if (isCountInvalid)

            {

                Console.WriteLine($"Invalid input parameters.");

            }

            else

            {

                for (int i = 0; i < count % nums.Count; i++)

                {

                    var firstElement = nums[0];

                    nums.RemoveAt(0);

                    nums.Add(firstElement);

                }

            }

        }

​

        static void SortNums(List<string> nums, string[] tokens)

        {

            int startIndex = int.Parse(tokens[2]);

            int count = int.Parse(tokens.Last());

​

            var isIndexInvalid = startIndex < 0 || startIndex > nums.Count - 1;

            var isCountInvalid = count < 0 || count + startIndex > nums.Count;

            if (isIndexInvalid || isCountInvalid)

            {

                Console.WriteLine($"Invalid input parameters.");

            }

            else

            {

                var sortedNums = nums.Skip(startIndex).Take(count).ToList();

                sortedNums.Sort();

                nums.RemoveRange(startIndex, count);

                nums.InsertRange(startIndex, sortedNums);

            }

        }

​

        static void ReverseNums(List<string> nums, string[] tokens)

        {

            int startIndex = int.Parse(tokens[2]);

            int count = int.Parse(tokens.Last());

​

            var isIndexInvalid = startIndex < 0 || startIndex > nums.Count - 1;

            var isCountInvalid = count < 0 || count + startIndex > nums.Count;

            if (isIndexInvalid || isCountInvalid)

            {

                Console.WriteLine($"Invalid input parameters.");

            }

            else

            {

                var reversedNums = nums.Skip(startIndex).Take(count).Reverse().ToList();

                nums.RemoveRange(startIndex, count);

                nums.InsertRange(startIndex, reversedNums);

            }

        }

    }

}

​