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.
fixed it
This comment is hidden because it contains spoiler information about the solution
You definitely have to solve the original version first; its comment section has more hints for you.
Not an issue. Your algo is wrong: you didn't think about the right way (I spent a lot of time on that trick too, before I understood the reason. 115 is effectively the good answer).