Commands

using System;
using System.Linq;

namespace ExamPreparation
{
    class Startup
    {
        private const char ArgumentsDelimiter = ' ';

        static void Main()
        {
            int sizeOfArray = int.Parse(Console.ReadLine());

            long[] array = Console.ReadLine()
                .Split(ArgumentsDelimiter)
                .Select(long.Parse)
                .ToArray();

            string command = Console.ReadLine();

            while (!command.Equals("stop"))
            {
                string[] tokens = command.Split(ArgumentsDelimiter);

                int index = 0, value = 0;
                if (tokens.Length > 1)
                {
                    index = int.Parse(tokens[1]);
                    value = int.Parse(tokens[2]);
                    index -= 1;
                }

                switch (tokens[0])
                {
                    case "multiply":
                        array[index] *= value;
                        break;
                    case "add":
                        array[index] += value;
                        break;
                    case "subtract":
                        array[index] -= value;
                        break;
                    case "lshift":
                        ShiftLeft(ref array);
                        break;
                    case "rshift":
                        ShiftRight(ref array);
                        break;
                }

                Print(array);
                command = Console.ReadLine();
            }
        }

        private static void ShiftRight(ref long[] array)
        {
            var firstHalf = array.Reverse().Take(1);
            var secondHalf = array.Reverse().Skip(1).Reverse();

            array = firstHalf.Concat(secondHalf).ToArray();
        }

        private static void ShiftLeft(ref long[] array)
        {
            var firsHalf = array.Skip(1);
            var secondHalf = array.Take(1);

            array = firsHalf.Concat(secondHalf).ToArray();
        }

        private static void Print(long[] array)
        {
            for (int i = 0; i < array.Length; i++)
            {
                Console.Write(array[i] + " ");
            }

            Console.WriteLine();
        }
    }
}