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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.
Might help those who get stuck:
Isn't a particularly difficult Kata, but just don't modify the original map or unexpected error may occur since the same map is reused between tests.
Just create a copy of the original map and modify it as you want will work.
Tried several different approaches, literally dynamic planned everything possible, and replacing all 2 ** to 1 << to get it passed in time.
Passed with Python 2.7.6.
Just ignore the sample tests and assume that you are right; Go for the attempt.
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Just a reminder:
The return type is a dict rather than a struct for Python, if you are new to Python and it confused you...
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