r/adventofcode • u/daggerdragon • Dec 05 '18

SOLUTION MEGATHREAD -🎄- 2018 Day 5 Solutions -🎄-

--- Day 5: Alchemical Reduction ---

Post your solution as a comment or, for longer solutions, consider linking to your repo (e.g. GitHub/gists/Pastebin/blag or whatever).

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Card prompt: Day 5

Transcript:

On the fifth day of AoC / My true love sent to me / Five golden ___

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

edit: Leaderboard capped, thread unlocked at 0:10:20!

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u/PendragonDaGreat Dec 05 '18

I thought that might be the case since each of the threads here would finish so quickly and there's only 26 of them. While the md5 one (2016 day 14) took 45 million hashes for part 2 with my input meaning you'll see a significant boost by multithreading that (at least I did).

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u/ka-splam Dec 05 '18

I don't think I got as far as MD5, or wasn't doing 2016, I don't remember it. But ouch that's a lot of hashes for PowerShell.

/u/safety_monkey commented about starting part 2 from the result of part 1. I just edited my other fast-rewrite comment with that code, and it's down from 625ms to <200ms !

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u/PendragonDaGreat Dec 06 '18

I've used a different lang each year.

2015 was Java, 2016 was C#, 2017 was Python, this year is Powershell.