ArrModifier

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ArrayModifier
{
    class ArrayModifier
    {
        static void Main()
        {
            long[] arr = Console.ReadLine().Split(' ').Select(long.Parse).ToArray();
            while (true)
            {
                string[] command = Console.ReadLine().Split(' ');
                if(command[0] == "end")
                {
                    break;
                }
               else if(command[0] == "swap")
                {
                    int index1 = int.Parse(command[1]);
                    int index2 = int.Parse(command[2]);
                    int oldValue = arr[index1];
                    arr[index1] = arr[index2];
                    arr[index2] = oldValue;
                }
                else if(command[0] == "multiply")
                {
                    int index1 = int.Parse(command[1]);
                    int index2 = int.Parse(command[2]);
                    arr[index1] = arr[index1] * arr[index2];
                }
                else if(command[0] == "decrease")
                {
                    for (int i = 0; i < arr.Length; i++)
                    {
                        arr[i]--;
                    }
                }
            }
            Console.WriteLine(string.Join(", ",arr));


        }
    }
}