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.
just take Range till num and all we be alll right.
great Thinking
or we can just brute force it
nice and clean
This is the best ans possible to this question
Just try to debug your loops and consider and consider inner list as a single node