87 lines
3.6 KiB
Plaintext
87 lines
3.6 KiB
Plaintext
Advent of Code
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br0xen (AoC++) 2*
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--- Day 1: Trebuchet?! ---
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Something is wrong with global snow production, and you've been selected to take a look. The Elves have even given you a map; on it, they've used stars to
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mark the top fifty locations that are likely to be having problems.
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You've been doing this long enough to know that to restore snow operations, you need to check all fifty stars by December 25th.
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Collect stars by solving puzzles. Two puzzles will be made available on each day in the Advent calendar; the second puzzle is unlocked when you complete the
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first. Each puzzle grants one star. Good luck!
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You try to ask why they can't just use a weather machine ("not powerful enough") and where they're even sending you ("the sky") and why your map looks
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mostly blank ("you sure ask a lot of questions") and hang on did you just say the sky ("of course, where do you think snow comes from") when you realize
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that the Elves are already loading you into a trebuchet ("please hold still, we need to strap you in").
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As they're making the final adjustments, they discover that their calibration document (your puzzle input) has been amended by a very young Elf who was
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apparently just excited to show off her art skills. Consequently, the Elves are having trouble reading the values on the document.
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The newly-improved calibration document consists of lines of text; each line originally contained a specific calibration value that the Elves now need to
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recover. On each line, the calibration value can be found by combining the first digit and the last digit (in that order) to form a single two-digit number.
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For example:
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1abc2
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pqr3stu8vwx
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a1b2c3d4e5f
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treb7uchet
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In this example, the calibration values of these four lines are 12, 38, 15, and 77. Adding these together produces 142.
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Consider your entire calibration document. What is the sum of all of the calibration values?
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Your puzzle answer was 55029.
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--- Part Two ---
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Your calculation isn't quite right. It looks like some of the digits are actually spelled out with letters: one, two, three, four, five, six, seven, eight,
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and nine also count as valid "digits".
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Equipped with this new information, you now need to find the real first and last digit on each line. For example:
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two1nine
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eightwothree
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abcone2threexyz
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xtwone3four
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4nineeightseven2
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zoneight234
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7pqrstsixteen
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In this example, the calibration values are 29, 83, 13, 24, 42, 14, and 76. Adding these together produces 281.
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What is the sum of all of the calibration values?
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Your puzzle answer was 55686.
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Both parts of this puzzle are complete! They provide two gold stars: **
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At this point, you should return to your Advent calendar and try another puzzle.
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If you still want to see it, you can get your puzzle input.
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References
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Visible links
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. https://adventofcode.com/
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. https://adventofcode.com/2023/about
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. https://adventofcode.com/2023/events
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. https://teespring.com/stores/advent-of-code
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. https://adventofcode.com/2023/settings
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. https://adventofcode.com/2023/auth/logout
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. Advent of Code Supporter
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https://adventofcode.com/2023/support
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. https://adventofcode.com/2023
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. https://adventofcode.com/2023
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. https://adventofcode.com/2023/support
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. https://adventofcode.com/2023/sponsors
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. https://adventofcode.com/2023/leaderboard
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. https://adventofcode.com/2023/stats
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. https://adventofcode.com/2023/sponsors
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. https://adventofcode.com/2015/day/1
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. https://en.wikipedia.org/wiki/Trebuchet
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. https://adventofcode.com/2023
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. https://adventofcode.com/2023/day/1/input
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