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.
Love that you used a bitwise operator. Super clever.
Definitely beside math approach, best brute force there, without modulo or repeating multiplication, grants. There is not many of them there :D