class Book {
    String author;
    String title;
    int numPages;
    boolean copyR;
    double \u0398;

    
    
    /* Boilerplate constructor. */ 
    Book( String _title, String _author, int _numPages, boolean _copyR ) {
        this.author   = _author;
        this.title    = _title;
        this.numPages = _numPages;
        this.copyR    = _copyR;
        //return this;
        }
        
    }