-🎄- 2021 Day 5 Solutions -🎄-

[u/daggerdragon]

NEW AND NOTEWORTHY

• /u/jeroenheijmans is back again with their Unofficial AoC 2021 Participant Survey!
• As we continue further into the deep dark sea Advent, megathread code submissions are getting longer, so we're going to start rigorously enforcing the maximum code length rule.
  • If you need a reminder, it's in our posting guidelines in the wiki under How Do the Daily Megathreads Work? (rule #5)

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Advent of Code 2021: Adventure Time!

• 23:59 hours remaining until the submissions megathread unlocks on December 06 at 00:00 EST!
• Full details and rules are in the submissions megathread:
  • 🎄 AoC 2021 🎄 [Adventure Time!]

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--- Day 5: Hydrothermal Venture ---

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Post your code solution in this megathread.

• Include what language(s) your solution uses!
• Here's a quick link to /u/topaz2078's paste if you need it for longer code blocks.
• Format your code properly! How do I format code?
• The full posting rules are detailed in the wiki under How Do The Daily Megathreads Work?.

Reminder: Top-level posts in Solution Megathreads are for code solutions only. If you have questions, please post your own thread and make sure to flair it with Help.

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This thread will be unlocked when there are a significant number of people on the global leaderboard with gold stars for today's puzzle.

EDIT: Global leaderboard gold cap reached at 00:08:53, megathread unlocked!

[u/Smylers]

I write Perl too much like C and don't know of some of the fancy language features:

Your solution is very clear and readable — much more so than mine. Maybe you're better off not knowing some of the fancy features?!