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Fixed challenge.txt for 2023 day 18

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Burnus 2023-12-19 18:37:37 +01:00
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2023/day18_lavaduct_lagoon/challenge.txt
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@ -58,6 +58,42 @@ Now, the lagoon can contain a much more respectable `*62*` cubic meters of lava.
The Elves are concerned the lagoon won't be large enough; if they follow their dig plan, *how many cubic meters of lava could it hold?* The Elves are concerned the lagoon won't be large enough; if they follow their dig plan, *how many cubic meters of lava could it hold?*
To begin, [get your puzzle input](18/input). Your puzzle answer was `34329`.
Answer: \--- Part Two ---
----------
The Elves were right to be concerned; the planned lagoon would be *much too small*.
After a few minutes, someone realizes what happened; someone *swapped the color and instruction parameters* when producing the dig plan. They don't have time to fix the bug; one of them asks if you can *extract the correct instructions* from the hexadecimal codes.
Each hexadecimal code is *six hexadecimal digits* long. The first five hexadecimal digits encode the *distance in meters* as a five-digit hexadecimal number. The last hexadecimal digit encodes the *direction to dig*: `0` means `R`, `1` means `D`, `2` means `L`, and `3` means `U`.
So, in the above example, the hexadecimal codes can be converted into the true instructions:
* `#70c710` = `R 461937`
* `#0dc571` = `D 56407`
* `#5713f0` = `R 356671`
* `#d2c081` = `D 863240`
* `#59c680` = `R 367720`
* `#411b91` = `D 266681`
* `#8ceee2` = `L 577262`
* `#caa173` = `U 829975`
* `#1b58a2` = `L 112010`
* `#caa171` = `D 829975`
* `#7807d2` = `L 491645`
* `#a77fa3` = `U 686074`
* `#015232` = `L 5411`
* `#7a21e3` = `U 500254`
Digging out this loop and its interior produces a lagoon that can hold an impressive `*952408144115*` cubic meters of lava.
Convert the hexadecimal color codes into the correct instructions; if the Elves follow this new dig plan, *how many cubic meters of lava could the lagoon hold?*
Your puzzle answer was `42617947302920`.
Both parts of this puzzle are complete! They provide two gold stars: \*\*
At this point, you should [return to your Advent calendar](/2023) and try another puzzle.
If you still want to see it, you can [get your puzzle input](18/input).