using System;

public class PostService

{

    private string address;//כתובת

    private int max;//כמות מקסימלית של חבילת

    private int amount;//כמות נוכחית של חבילות

    public PostService(string address,int max)

    {

        this.address=address;

        this.max=max;

        this.amount=0;

    }

    public int AddPack(int num)

    {

        if(this.max>= this.amount+num )

        {

            this.amount+=num;

            return 0;

        }

        int notar=this.amount+num-this.max;

        this.amount=max;

        return notar;

    }

    public int HowMany(string adress) 

{

​

        return p.amount;

}

​

}

public class CityStation 

{

    private string name;

    private int max2;

    private int current;

    private PostService[] cs;

    public CityStation(string name, int max2) 

{

        this.name = name;

        this.max2 = max2;

        this.current = 0;

}

​

​

}

public class Program

{

    public static void Main()

    {

        PostService p= new PostService("gjkif",20);

        p.AddPack(25);

    }

}