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.
If you use property decorator here and every time when you need to read it python needs to calculate it? Is this solution hard for performance?
Ok. I thaught that clerk didn't know how many cash 7th person have when he have 6th. In description it is not said that he cant see all people in line, so yes, he can predict how give change in order to make more money :)
This comment is hidden because it contains spoiler information about the solution