Fields in #__hikashop_category, left and right?

-- HikaShop version -- : 2.3.3
-- Joomla version -- : 3.3.4

I import categories with a custom script and everything is ok. but i try to add a product to this cateogry then is category path wrong:http://prntscr.com/4s0zwi, i seen in database, in the table for cateogries are two fields and they are everytime different:
"category_left and category_right", which type of values how i to generate to have true category path?
At the moment are my all values on: 0 prntscr.com/4s0zcu

Ok. many thanks, can you please give me a guide, which values have i to insert, are they a auto values as primary key? A read this but technical i have no idea...

I implemented it in my script, works well, thank you...