using System;

using System.Collections.Generic;

public class passenger{

    private static int limit;

    public static passenger onBoard(){

        limit++;

        if (limit<=5){

        Console.WriteLine("New pessenger on board! Passenger no. = {0}", passenger.limit);

        return new passenger();

        }

        else{

        Console.WriteLine("The bus is full! Fuck off!!");

        return null;

        }

    }

}

​

public class Program

{

    public static void Main(){

        List <passenger> Passengers = new List<passenger>();

        for(int i=0; i<7; i++){

        Passengers.Add(passenger.onBoard());

        }

        Console.WriteLine(Passengers.Count);

    }

​

}