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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.
Paths along first/last rows or columns are considered on code, I also considered the case in which immediate bottom and right positions have the same value (which does not occur on predefined tests).
I'm pretty sure I may have messed up at some point on my code, but should the predefined test for a 31x31 matrix yield 8690?
My code works properly on both Testing Matrix 1 and tests I ran with arrays created on numpy with the same N range given in Kata.