using System;

using System.Collections.Generic;

using System.Collections.ObjectModel;

using System.Threading;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {

            Dictionary<int,Persons> MyDic = new Dictionary<int, Persons>();

​

            MyDic.Add(1, new Persons("Person 1", "ChopStick 1", "ChopStick 2"));

            MyDic.Add(2, new Persons("Person 2", "ChopStick 3", "ChopStick 4"));

            MyDic.Add(3, new Persons("Person 3", "ChopStick 5", "ChopStick 1"));

            MyDic.Add(4, new Persons("Person 4", "ChopStick 2", "ChopStick 3"));

            MyDic.Add(5, new Persons("Person 5", "ChopStick 4", "ChopStick 5"));

​

            foreach (var p in MyDic)

            {

                Task task = new Task(Persons.Eating, p.Value);

                task.Start();

                task.Wait(30);

            }

​

    }

}

public class Persons

{

    static object lockchopsticks = new object();

    public string Name { get; set; }

    public string LchopStick { get; set; }

    public string RchopStick { get; set; }

​

    public Persons(string name, string lchopstick, string rchopstick)

    {

        this.Name = name;

        this.LchopStick = lchopstick;

        this.RchopStick = rchopstick;

    }

​

    public override string ToString()

    {

        return string.Format("{0} {1} {2}",this.Name,this.LchopStick,this.RchopStick);

    }

​

    public static void Eating(object data)

    {

​

        Persons e = (Persons)data;

​

        string person = e.Name;

        string lchopstick = e.LchopStick;

        string rchopstick = e.RchopStick;

​

       lock (lockchopsticks)

       {

            Thread.Sleep(40);

            Task T2 = new Task(PickUp, e);

            T2.Start();

        }

     }

​

    public static void PickUp(object data)

    {

​

        Persons e = (Persons)data;

​

            Thread.Sleep(30);

            Console.WriteLine("{0} picks {1}:", e.Name,e.LchopStick);

            Console.WriteLine();

            Thread.Sleep(30);

            Console.WriteLine("{0} picks {1}:", e.Name,e.RchopStick);

            Console.WriteLine();

            Thread.Sleep(20);

            Console.WriteLine("{0} eats", e.Name);

            Console.WriteLine();

​

            Task T3 = new Task(DropOff, e);

            T3.Start();

​

​

    }

    public static void DropOff(object data)

    {

​

            Persons e = (Persons)data;

           Thread.Sleep(10);

            Console.WriteLine("{0} releases {1}:", e.Name, e.LchopStick);

            Thread.Sleep(40);

            Console.WriteLine();

            Console.WriteLine("{0} releases {1}:", e.Name, e.RchopStick);

            Console.WriteLine();

    }

​

}

​

​