using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;

class Program
{
    static void Main(string[] args)
    {
        Depo depo = new Depo();

        while (true)
        {
            depo.Work();
        }
    }
}

class Depo
{
    private static Random random = new Random();

    private List<Train> _trains;

    private string _pointA;
    private string _pointB;
    private int _numberTickets;

    public Depo()
    {
        _trains = new List<Train>();
    }

    public void Work()
    {
        ShowInfo();

        _numberTickets = AddNewTickets();

        if (CreateNewDirection())
        {
            Console.WriteLine($"Кол-во купленных билетов:{_numberTickets}");

            CreateNewTrain();
        }
    }

    private int AddNewTickets()
    {
        int minIndexRandom = 5;
        int maxIndexRandom = 16;

        int temporarynumberTickets = random.Next(minIndexRandom, maxIndexRandom);

        return temporarynumberTickets;
    }

    private bool CreateNewDirection()
    {
        string pointA;
        string pointB;

        Console.WriteLine("Создание нового направления.\nВведите пункт отправления и пункт отбытия.");
        pointA = Console.ReadLine();
        pointB = Console.ReadLine();

        if (pointA == null || pointB == null)
        {
            Console.WriteLine("Ошибка. Введены не коректные данные");
            return false;
        }
        else
        {
            _pointA = pointA;
            _pointB = pointB;

            Console.WriteLine($"Направление {_pointA}-{_pointB} создано.");

            return true;
        }
    }

    private void CreateNewTrain()
    {
        int numberTrain = 1000;

        _trains.Add(new Train(numberTrain, new Direction(_pointA, _pointB), _numberTickets));

        numberTrain++;
    }

    private void ShowInfo()
    {
        foreach (var train in _trains)
        {
            Console.WriteLine($"Направление {_pointA}-{_pointB} |Номер поезда {train.Number}| Кол-во вагонов {train.QuantityVans}");
        }
    }
}

class Train
{
    private List<Van> _vans;
    private List<Van> _vansInTrain;
    private Direction _direction;

    public Train(int number, Direction direction, int numberTickets)
    {
        _direction = direction;
        _vans = new List<Van>() { new SmallVan(), new MediumVan(),new LargeVan() };
        _vansInTrain = new List<Van>();

        QuantityVans = AddNewVans(numberTickets);
    }

    public int Number { get; private set; }
    public int QuantityVans { get; private set; }

    public int AddNewVans(int numberTickets)
    {
        string vanName;
        int quantityVans = 0;

        Console.WriteLine("Какой вагон вы хотите добавить?");

        foreach (Van van in _vans)
        {
            van.ShowStats();
        }

        vanName = Console.ReadLine();

        foreach (Van van in _vans)
        {
            while (van.Name == vanName && numberTickets > 0)
            {
                _vansInTrain.Add(van);
                numberTickets -= van.NumberSeats;
                quantityVans++;
            }

            break;
        }

        return quantityVans;
    }
}

class Van
{
    public Van(string name, int numberSeats)
    {
        Name = name;
        NumberSeats = numberSeats;
    }

    public string Name { get; private set; }
    public int NumberSeats { get; private set; }

    public void ShowStats()
    {
        Console.WriteLine($"{Name}|Кол-во мест:{NumberSeats}");
    }
}

class SmallVan : Van
{
    public SmallVan() : base ("Small", 5) { }

}

class MediumVan : Van
{
    public MediumVan() : base("Medium", 10) { }
}

class LargeVan : Van
{
    public LargeVan() : base("Large", 15) { }
}

class Direction
{
    public Direction(string pointA, string pointB)
    {
        PointA = pointA;
        PointB = pointB;
    }

    public string PointA { get; private set; }
    public string PointB { get; private set; }
}