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A comment on Jane Street Puzzles.

Re:Jane Street Puzzles by knappa on Wednesday July 04, 2018 @07:54PM (#17460050)
I haven't thought it through yet, but Pick's theorem ( https://en.wikipedia.org/wiki/Pick%27s_theorem ) might be useful for the current puzzle.
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Re:Jane Street Puzzles by mikhailfranco on Thursday July 05, 2018 @04:20AM (#17461658)
Not sure why, but that is unexpected.

And the proof is so simple and elegant.

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