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submitted 9 months ago* (last edited 9 months ago) by Ategon@programming.dev to c/advent_of_code@programming.dev

Day 10: Pipe Maze

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[-] cacheson@kbin.social 2 points 9 months ago

Nim

I got a late start on part 1, and then had to sleep on part 2. Just finished everything up with a little time to spare before day 11.

Part 2 probably would have been easier if I knew more about image processing, but I managed:

  • Made a copy of the grid and filled it with . tiles
  • Copied all of the path tiles that I had calculated in part 1
  • Flood-filled all the . tiles that are connected to the outside edges of the grid with O tiles
  • Walked along the path, looking for an adjacent O tile at each step. Stopped when one was found, and recorded whether it was to the left or right of the path.
  • Walked the path again, flood-filling any adjacent inside . tiles with I, and counted them

Code:

[-] Ategon@programming.dev 2 points 9 months ago* (last edited 9 months ago)

btw if you put the url to nim as /c/nim@programming.dev I dont think the url bot will trigger since it does the same thing the ! format does

[Nim](/c/nim@programming.dev)

Nim

Edit: yeah looks like it didnt reply to me so this format works

[-] cacheson@kbin.social 2 points 9 months ago

Unfortunately then it'll be broken for kbin users. I can do it anyway though if the bot is too annoying, just lmk.

[-] CommunityLinkFixer@lemmings.world 1 points 9 months ago

Hi there! Looks like you linked to a Lemmy community using a URL instead of its name, which doesn't work well for people on different instances. Try fixing it like this: !nim@programming.dev

this post was submitted on 10 Dec 2023
22 points (95.8% liked)

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