2023 Day 18 Complete!

2023-12-18 06:54:10 -06:00
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+                               [1]Advent of Code
+
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+   br0xen [7](AoC++) 36*
+
+                                  0xffff&[8]2023
+
+     • [9][Calendar]
+     • [10][AoC++]
+     • [11][Sponsors]
+     • [12][Leaderboard]
+     • [13][Stats]
+
+   Our [14]sponsors help make Advent of Code possible:
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+
+--- Day 18: Lavaduct Lagoon ---
+
+   Thanks to your efforts, the machine parts factory is one of the first
+   factories up and running since the lavafall came back. However, to catch
+   up with the large backlog of parts requests, the factory will also need a
+   large supply of lava for a while; the Elves have already started creating
+   a large lagoon nearby for this purpose.
+
+   However, they aren't sure the lagoon will be big enough; they've asked you
+   to take a look at the dig plan (your puzzle input). For example:
+
+ R 6 (#70c710)
+ D 5 (#0dc571)
+ L 2 (#5713f0)
+ D 2 (#d2c081)
+ R 2 (#59c680)
+ D 2 (#411b91)
+ L 5 (#8ceee2)
+ U 2 (#caa173)
+ L 1 (#1b58a2)
+ U 2 (#caa171)
+ R 2 (#7807d2)
+ U 3 (#a77fa3)
+ L 2 (#015232)
+ U 2 (#7a21e3)
+
+   The digger starts in a 1 meter cube hole in the ground. They then dig the
+   specified number of meters up (U), down (D), left (L), or right (R),
+   clearing full 1 meter cubes as they go. The directions are given as seen
+   from above, so if "up" were north, then "right" would be east, and so on.
+   Each trench is also listed with the color that the edge of the trench
+   should be painted as an [16]RGB hexadecimal color code.
+
+   When viewed from above, the above example dig plan would result in the
+   following loop of trench (#) having been dug out from otherwise
+   ground-level terrain (.):
+
+ #######
+ #.....#
+ ###...#
+ ..#...#
+ ..#...#
+ ###.###
+ #...#..
+ ##..###
+ .#....#
+ .######
+
+   At this point, the trench could contain 38 cubic meters of lava. However,
+   this is just the edge of the lagoon; the next step is to dig out the
+   interior so that it is one meter deep as well:
+
+ #######
+ #######
+ #######
+ ..#####
+ ..#####
+ #######
+ #####..
+ #######
+ .######
+ .######
+
+   Now, the lagoon can contain a much more respectable 62 cubic meters of
+   lava. While the interior is dug out, the edges are also painted according
+   to the color codes in the dig plan.
+
+   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?
+
+   Your puzzle answer was 42317.
+
+--- 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 83605563360288.
+
+   Both parts of this puzzle are complete! They provide two gold stars: **
+
+   At this point, you should [17]return to your Advent calendar and try
+   another puzzle.
+
+   If you still want to see it, you can [18]get your puzzle input.
+
+   You can also [Shareon [19]Twitter [20]Mastodon] this puzzle.
+
+References
+
+   Visible links
+   1. https://adventofcode.com/
+   2. https://adventofcode.com/2023/about
+   3. https://adventofcode.com/2023/events
+   4. https://teespring.com/stores/advent-of-code
+   5. https://adventofcode.com/2023/settings
+   6. https://adventofcode.com/2023/auth/logout
+   7. Advent of Code Supporter
+	https://adventofcode.com/2023/support
+   8. https://adventofcode.com/2023
+   9. https://adventofcode.com/2023
+  10. https://adventofcode.com/2023/support
+  11. https://adventofcode.com/2023/sponsors
+  12. https://adventofcode.com/2023/leaderboard
+  13. https://adventofcode.com/2023/stats
+  14. https://adventofcode.com/2023/sponsors
+  15. https://jobs.bestbuy.com/bby?id=career_area&content=technology&career_site=Digital%20and%20Technology,Data%20and%20Analytics&spa=1&s=req_id_num
+  16. https://en.wikipedia.org/wiki/RGB_color_model#Numeric_representations
+  17. https://adventofcode.com/2023
+  18. https://adventofcode.com/2023/day/18/input
+  19. https://twitter.com/intent/tweet?text=I%27ve+completed+%22Lavaduct+Lagoon%22+%2D+Day+18+%2D+Advent+of+Code+2023&url=https%3A%2F%2Fadventofcode%2Ecom%2F2023%2Fday%2F18&related=ericwastl&hashtags=AdventOfCode
+  20. javascript:void(0);