Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
I think there's a problem in ruby
If the price of the card is 0 and the discount percentage for each ticket is 0.95, the return is supposed to be 1, not 2.