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.
It could be enforced by kata author, but it isn't so you'll get all different type of solutions.
Tried to check some cases for very big numbers, accidentally pressed submit)
ahahaha
Agree. This kata needs more tests
[] List is redundant in this case
This comment is hidden because it contains spoiler information about the solution
input can not be higher than 4000
converting to str is redundant