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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.
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I can only think that: it's designed this way, on purpose~
given by (-1) * 3 * (-100)Read that again.
but in the kata description abs(array) is requested ::
solve( [[1,-1],[2,3],[10,-100]] ) = 300, given by (-1) * 3 * (-100)
else the result would've been 30 not 300 !!!
Is -16 > 12?
It is not a kata issue. This kata works this way.
Not a kata issue.
Please, use spoiler flag next time.