MartoooE

using System;

namespace _02._Array_Modifier
{
    internal class Program
    {
        static void Main()
        {
            List<int> integerList = Console.ReadLine()
                .Split(" ", StringSplitOptions.RemoveEmptyEntries)
                .Select(int.Parse).ToList();

            string inputComand = Console.ReadLine();
            while (inputComand != "end")
            {

                List<string> comandList = inputComand
                  .Split(" ", StringSplitOptions.RemoveEmptyEntries)
                  .ToList();

                if (comandList[0] == "swap")
                {
                    int firstIndex = int.Parse(comandList[1]);
                    int secondIndex = int.Parse(comandList[2]);
                    (integerList[firstIndex], integerList[secondIndex]) = (integerList[secondIndex], integerList[firstIndex]);

                    // Console.WriteLine(string.Join(" ", integerList));
                }
                else if (comandList[0] == "multiply")
                {
                    int firstIndex = int.Parse(comandList[1]);
                    int secondIndex = int.Parse(comandList[2]);

                    integerList[firstIndex] *= integerList[secondIndex];
                    // Console.WriteLine(string.Join(" ", integerList));
                }
                else if (comandList[0] == "decrease")
                {
                    for (int i = 0; i < integerList.Count; i++)
                    {
                        integerList[i] -= 1;
                    }
                }

                inputComand = Console.ReadLine();
            }
            Console.WriteLine(string.Join(", ", integerList));
        }
    }
}