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.
The lists lengths are
3000 - 5000
. Brute force is not practical. Think of other ways you can track entries in an array. Python offers many options, including builtin modules that can help solve this in one line!This comment is hidden because it contains spoiler information about the solution