using System;

public class Node<T>

{

        private T value;

        private Node<T> next;

        public Node(T value)

        {

            this.value = value;

            next = null;

        }

​

        public Node(T value, Node<T> next)

        {

            this.value = value;

            this.next = next;

        }

​

        public T GetValue()

        {

            return value;

        }

​

        public Node<T> GetNext()

        {

            return next;

        }

​

        public void SetValue(T value)

        {

            this.value = value;

        }

​

        public void SetNext(Node<T> next)

        {

            this.next = next;

        }

​

        public bool HasNext()

        {

            return this.next != null;

        }

​

        public override string ToString()

        {

            return value.ToString();

        }

}

public class Queue<T>

    {

        private Node<T> first;

        private Node<T> last;

        public Queue()

        {

            this.first = null;

            this.last = null;

        }

        public bool IsEmpty()

        {

            return this.first == null;

        }

        public T Head()

        {

            return this.first.GetValue();

        }

        public void Insert(T x)

        {

            if (this.last != null)

            {

                this.last.SetNext(new Node<T>(x));

                this.last = this.last.GetNext();

            }

            else

            {

                this.last = new Node<T>(x);

                this.first = this.last;

            }

        }

        public T Remove()

        {

            T x = this.first.GetValue();

            this.first = this.first.GetNext();

            if (this.first == null)

                this.last = null;

            return x;

        }

        public override string ToString()

        {

            string str = "[";

            Node<T> pos = this.first;

            while (pos != null)

            {

                str += pos.GetValue();

                if (pos.HasNext())

                    str += ", ";

                pos = pos.GetNext();

            }

            str += "]";

            return str;

        }

    }                   

public class Program

{

    public static Queue<int> Copy(Queue<int> q)

    {

        //עשינו שיעור שעבר

        return q;

    }

    public static int Count(Queue<int> q, int num)

    {

        int count=0;

        Queue<int> q1=new Queue<int>();

        while(!q.IsEmpty())

        {

            if(q.Head()==num)

                count++;

            q1.Insert(q.Remove());

        }

        while(!q1.IsEmpty())

            q.Insert(q1.Remove());

        return count;

    }

​

    public static Queue<int> QueCouple(Queue<int> q)

    {

        Queue<int> newQ=new Queue<int>();

        Queue<int> qCopy=Copy(q);

        while(!qCopy.IsEmpty())

        {

            if(Count(qCopy,qCopy.Head())==2)

            {

                newQ.Insert(qCopy.Head());

            }

            qCopy.Remove();

        }

        return newQ;

    }

    public class Appointment

    {

        private string code;

        private string date;

        private int time;

        private string id;

        private string tel;

        private int status;

        public Appointment(string code,string date,int time,string id,string tel)

        {

            this.code=code;

            this.date=date;

            this.time=time;

            this.id=id;

            this.tel=tel;

            this.status=2;

        }

        public Appointment(Appointment a)

        {

            this.code=a.code;

            this.date=a.date;

            this.time=a.time;

            this.id=a.id;

            this.tel=a.tel;

            this.status=a.status;   

        }

        public string GetCode(){return this.code;}

        public string GetDate(){return this.date;}

        public int GetTime(){return this.time;}

        public string GetId(){return this.id;}

        public string GetTel(){return this.tel;}

        public int GetStatus(){return this.status;}

    }

    public class TizApp

    {

        private Queue<Appointment> yes ;

        private Queue<Appointment> maybe;

        public TizApp()

        {

            this.yes=null;

            this.maybe=null;

        }

        public void SetYes(Queue<Appointment> yes)

        {

            this.yes=yes;

        }

        public void SetMaybe(Queue<Appointment> maybe)

        {

            this.maybe=maybe;

        }

        public Queue<Appointment> GetYes(){return this.yes;}

        public Queue<Appointment> GetMaybe(){return this.maybe;}

    }

    public static void Main()

    {

    }

}