using System;

public class Program

{

    class book

    {

        // Q1.A:

        public bool Rearrangement(){

            if (this.year<2000 || this.permission==false)

                return false;

            return true;

        }

    }//off class

    //Q1.2

    static void undesirableBOOKS( book [] books){

        int i;

        for(i=0;i<books.Length;i++){

            if(books[i].Rearrangement()==false)

                Console.WriteLine("{0}",books[i].getname());

        }

    }

    public static void Main()

    {

        Console.WriteLine("NOTHING REQUIRED");

    }

}