I don't think count discards duplicate values, or does it?

Thank You. Your reply helped me to correct my solution and pass the tests.

Yes, it does!

Hi! It's about dynamic programming, the "top down" approach.

Hi! This is very clever. But I fail to imagine my self ever thinking of this. Can you please tell me how this style/techniqeu is called so I could learn it and practice it more?

Where did you check the cube value of each digit?

Ignore the comments, I didnt understood the exercise then.

The description is unnecessarily tricky and misleading. To avoid this error you should retrieve both company_id from products and company_name from companies.

I keep getting this error -> "undefined method `name' for nil:NilClass
Simplified backtrace: block (3 levels) in <top (required)> -> block in each -> block (2 levels) in fetch_rows -> each -> block in fetch_rows -> query -> block (2 levels) in _execute -> log_connection_yield -> block in _execute -> block in synchronize -> hold -> synchronize -> _execute -> execute -> execute -> fetch_rows -> each -> block (2 levels) in <top (required)>"

I dont see how this could fail. If you get 50bill you only need 25, if you get 50, you need 75 (50+25|| 25 + 25+25), doesnt matter, if there would be more bills, then it wouldnt work. I think. Its just so simple you dont want to believe it. I think this is pretty clever.

Very nice! At first I thought that cant be right, didnt read it properly, but its was just so simple I wanted to believe it was wrong :D