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

// Note: I used inheritance because the Turn class have clintsID's (in other words the number of the clint)
// the clerks class had also the clintsID's.

namespace Clerks_App
{
    class Clerks :  Turn
    {
        public List<int> clerk = new List<int>();
        public int maxTime { get; set; }

        public int sum;
        private Thread thread;

        public Clerks()
        {
            sum = 0;
            maxTime = 540;
        }

        // Random function between 30-40 in minutes.
        public int RandomTime()
        {
            Random rnd = new Random();
            return rnd.Next(30, 40);
        }

        public void ClerkCalling()
        {
            while (clintsNumber != 0)
            {
                for (int i = 1; i <= clerk.Count; i++)
                {
                    Thread.Sleep(RandomTime());
                    Console.WriteLine("The clerk number {0} tooks {1} minutes", i, RandomTime());
                    sum += RandomTime();

                }
            }
            Console.WriteLine("Total Time = {0}", sum, clerk.Count);
            IsNeededMoreClerks();
        }

        //The clerks calling to the clints, and calculating the totalsum thrugh all the clints
        //after that check if needed more clerks.
        public void ClintTurn()
        {
            for (int i = 1; i <= clints.Count ; i++)
            {
                Thread.Sleep(RandomTime());
                Console.WriteLine("The clint number {0} tooks {1} minutes", i*10, RandomTime());
                sum += RandomTime();
                clintsNumber--;
            }
        }

        //Checking if the input is correct, and adding clerks to the list.
        public void AddClerk()
        {
            try
            {
                if (clerk.Count == 0)
                {
                    Console.Write("Enter clerks number: ");
                    int clerkNumber = int.Parse(Console.ReadLine());
                    for (int i = 0; i < clerkNumber; i++)
                    {
                        clerk.Add(i);
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("Please Try Again: '{0}' \n", ex);
                Console.WriteLine("-----------------------------------");
                AddClerk();
            }

        }

        // calculation how many clerks should be added.
        public int AddNewClerk()
        {
            int addNew = (sum /maxTime) + 1;
            clerk.Add(addNew);
            return (sum/maxTime) + 1;
        }

        // Checking if the clerks end by time if not calling other function "AddNewClerk"
        public void IsNeededMoreClerks()
        {
            if (maxTime > sum)
            {
                Console.WriteLine("Don't needed more Clerks");
            }
            else
            {
                Console.WriteLine("Must hire {0} more clerks", AddNewClerk());
            }

        }

        public void Start()
        {
            thread = new Thread(ClintTurn);
            thread.Start();
        }

        public void StartClerk()
        {
            thread = new Thread(ClerkCalling);
            thread.Start();
        }

        public void Stop()
        {
            thread.Join();
        }


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

namespace Clerks_App
{
    class Turn
    {
        public List<int> clints = new List<int>();
        public int clintsNumber { get; set; }


        // check the input and Adding clints to the list
        public void AddClints()
        {
            try
            {
                Console.Write("Clints number: ");
                clintsNumber = int.Parse(Console.ReadLine());
                for (int i = 0; i < clintsNumber; i++)
                {
                    clints.Add(i);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("Please Try Again: " + ex);
                Console.WriteLine("-----------------------------");
                AddClints();
            }

        }




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


namespace Clerks_App
{
    class Program
    {
        static void Main(string[] args)
        {
            Clerks c = new Clerks();
            c.AddClerk();
            c.AddClints();
            Console.WriteLine("--------------------------");
            c.StartClerk();
            c.Start();
            Console.WriteLine();
            c.Stop();
        }
    }
}