ArrayModifier

using System;
using System.Linq;

namespace P02.ArrayModifier
{
    internal class Program
    {
        static void Main(string[] args)
        {
            long[] elements = Console.ReadLine()
                .Split(' ', StringSplitOptions.RemoveEmptyEntries)
                .Select(long.Parse)
                .ToArray();
            long temp = 0;
            string command = Console.ReadLine();
            while(command != "end")
            {
                string[] cmdArgs = command.Split();
                string action = cmdArgs[0];
                int indexOne = int.Parse(cmdArgs[1]);
                int indexTwo = int.Parse(cmdArgs[2]);

                if(action == "swap")
                {
                    temp = elements[indexOne];
                    elements[indexOne] = elements[indexTwo];
                    elements[indexTwo] = temp;
                }
                else if(action == "multiply")
                {
                    elements[indexOne] = elements[indexOne] * elements[indexTwo];
                }
                else if(action == "decrease")
                {
                    for (int i = 0; i < elements.Length; i++)
                    {
                        elements[i]--;
                    }
                }
                command = Console.ReadLine();
            }
            Console.WriteLine(string.Join(", ", elements));
        }
    }
}