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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.
There are muliple mazes - each next one are bigger. Put extra empty line to ouptu in code - then you will see it.
There're no such fixed tests, and the random tests are always square-shaped.