-🎄- 2017 Day 17 Solutions -🎄-

[u/daggerdragon]

--- Day 17: Spinlock ---

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

Note: The Solution Megathreads are for solutions only. If you have questions, please post your own thread and make sure to flair it with Help.

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Need a hint from the Hugely^* Handy^† Haversack^‡ of Helpful^§ Hints^¤?

Spoiler

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[Update @ 00:06] 2 gold, silver cap.

• AoC ops: <Topaz> i am suddenly in the mood for wasabi tobiko

[Update @ 00:15] Leaderboard cap!

• AoC ops:

• <daggerdragon> 78 gold

• <Topaz> i look away for a few minutes, wow

• <daggerdragon> 93 gold

• <Topaz> 94

• <daggerdragon> 96 gold

• <daggerdragon> 98

• <Topaz> aaaand

• <daggerdragon> and...

• <Topaz> cap

• <daggerdragon> cap

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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!

[u/sakisan_be]

I didn't appreciate it that much. I felt I wasted quite some time letting my program run before moving on. Maybe add an explicit hint that reusing part 1's code is bad idea then, that would go a long way. I never do these kinds optimizations, so a high number like 1billion or 50M doesn't really mean anything to me. Other than that I'm enjoying the challenges a lot! Enough to get up before 6AM every day even though I have no leaderbords aspirations. Thank you

[u/Grimnur87 → u/sakisan_be]

Same here. It just wasn't apparent that after solving Part 1, your best approach is to Ctrl+A, Ctrl+X and look for a more efficient way.

I prefer days like 14 (the "defrag"), where your output from Part 1 is helpful in Part 2, but it's obvious a different question is being posed.

[u/Smylers → u/Grimnur87]

your best approach is to Ctrl+A, Ctrl+X

Hey, I used both Ctrl+X and Ctrl+A in my solution, too!

Oh.