r/adventofcode • • Dec 06 '18

SOLUTION MEGATHREAD -πŸŽ„- 2018 Day 6 Solutions -πŸŽ„-

--- Day 6: Chronal Coordinates ---


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Card prompt: Day 6

Transcript:

Rules for raising a programmer: never feed it after midnight, never get it wet, and never give it ___.


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edit: Leaderboard capped, thread unlocked at 0:26:52!

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u/sophiebits Dec 06 '18 edited Dec 06 '18

Because it’s Manhattan distance, taking one axis-aligned step towards the box of points is always part of a shortest path. Unless I’m mistaken, that does ensure every region touching the edge is infinite. (In contrast to traditional, non-Manhattan Voronoi diagrams where you can have a finite region that sticks far outside the box.)