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

namespace Home_Task
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Enter num of Clients");
            int ClientNum = int.Parse(Console.ReadLine());
            Console.WriteLine("Please Enter Max num of Clerks you can effort");
            int maxClercks = int.Parse(Console.ReadLine());
            for (int i = 1; i <= maxClercks; i++)  //checks 1 to Max clerks
            {
                Console.WriteLine("Checking for {0} Clerks", i);
                Thread.Sleep(1000);
                ClientsQueue clientqueue = new ClientsQueue(ClientNum);
                Clerck[] clercks = Clerck.CreateClercks(i, i * 540);
                Thread.Sleep(2000);
                if (clercks[0].Total > 0)
                {
                    Console.WriteLine("Calculation Finished");
                    Console.WriteLine("Number of Needed Clerks for {0} Clients is: {1}", ClientNum, i);
                    break;
                }
                if ((clercks[0].Total < 0) && (i == maxClercks))
                {
                    Console.WriteLine("Calculation Finished");
                    Console.WriteLine("You can't have enough clerks to serve all customers");
                    break;
                }
            }
            Console.ReadLine();
        }
    }
}


// Customer class

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

namespace Home_Task
{
    public class Customer
    {
        public int GetTreatTime()
        {
            Random rnd = new Random();
            return rnd.Next(30, 40);
        }
    }
}


// ClientQueue

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

namespace Home_Task
{
    public class ClientsQueue
    {
        private static Queue<Customer> queue;
        public ClientsQueue(int clientNum)//create queue with clients
        {
            queue = new Queue<Customer>();

            for (int i = 0; i < clientNum; i++)
            {
                queue.Enqueue(new Customer());
            }
        }
        public static Customer GetClientFromQueue()//remove client from queue
        {
            lock (queue)
            {
                if (queue.Count() > 0)
                {
                    return queue.Dequeue();
                }
                return null;
            }
        }
    }
}

//clerck class

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


namespace Home_Task
{
    public class Clerck
    {
        private Thread takeCustomer;
        public int daily;
        private static int _total;
        public int Total
        {
            get { return _total; }
        }
        public static Clerck[] CreateClercks(int numOfClerrcks, int totalDay)
        {
            _total = totalDay;
            Clerck[] clercks = new Clerck[numOfClerrcks];
            for (int i = 0; i < numOfClerrcks; i++)
            {
                clercks[i] = new Clerck();
            }
            return clercks;
        }

        public Clerck()
        {
            this.daily = 540;
            takeCustomer = new Thread(clerckJob);
            takeCustomer.Start();
        }

        public void clerckJob()
        {
            Customer client = ClientsQueue.GetClientFromQueue();
            while ((this.daily > 0) && (client != null)) //checks if day not finished and if left any clients in queue
            {
                int clientTime = client.GetTreatTime();
                this.daily -= clientTime; //subtract time of a single queue from one clerk
                _total -= clientTime; //substract time of a single queue from all clerks
                Console.WriteLine(this.daily);
                Thread.Sleep(100);
                client = ClientsQueue.GetClientFromQueue();

            }
            takeCustomer.Join();
        }
    }
}