88 lines
3.5 KiB
Plaintext
88 lines
3.5 KiB
Plaintext
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[1]Advent of Code
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• [2][About]
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• [3][Events]
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• [4][Shop]
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• [5][Settings]
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• [6][Log Out]
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br0xen [7](AoC++) 4*
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<y>[8]2024</y>
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• [9][Calendar]
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• [10][AoC++]
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• [11][Sponsors]
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• [12][Leaderboard]
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• [13][Stats]
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Our [14]sponsors help make Advent of Code possible:
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[15]Lightricks - Are you nerdy but also creative? Do you love AI, but
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truly believe the human hand doesn’t have six fingers? If you answered yes
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and want to help the future of creation, we’re hiring software engineers,
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developers, and more.
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--- Day 3: Mull It Over ---
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"Our computers are having issues, so I have no idea if we have any Chief
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Historians in stock! You're welcome to check the warehouse, though," says
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the mildly flustered shopkeeper at the [16]North Pole Toboggan Rental
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Shop. The Historians head out to take a look.
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The shopkeeper turns to you. "Any chance you can see why our computers are
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having issues again?"
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The computer appears to be trying to run a program, but its memory (your
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puzzle input) is corrupted. All of the instructions have been jumbled up!
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It seems like the goal of the program is just to multiply some numbers. It
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does that with instructions like mul(X,Y), where X and Y are each 1-3
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digit numbers. For instance, mul(44,46) multiplies 44 by 46 to get a
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result of 2024. Similarly, mul(123,4) would multiply 123 by 4.
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However, because the program's memory has been corrupted, there are also
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many invalid characters that should be ignored, even if they look like
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part of a mul instruction. Sequences like mul(4*, mul(6,9!, ?(12,34), or
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mul ( 2 , 4 ) do nothing.
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For example, consider the following section of corrupted memory:
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xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))
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Only the four highlighted sections are real mul instructions. Adding up
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the result of each instruction produces 161 (2*4 + 5*5 + 11*8 + 8*5).
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Scan the corrupted memory for uncorrupted mul instructions. What do you
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get if you add up all of the results of the multiplications?
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To begin, [17]get your puzzle input.
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Answer: [18]_____________________ [19][ [Submit] ]
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You can also [Shareon [20]Bluesky [21]Twitter [22]Mastodon] this puzzle.
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References
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Visible links
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1. https://adventofcode.com/
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2. https://adventofcode.com/2024/about
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3. https://adventofcode.com/2024/events
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4. https://cottonbureau.com/people/advent-of-code
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5. https://adventofcode.com/2024/settings
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6. https://adventofcode.com/2024/auth/logout
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7. Advent of Code Supporter
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https://adventofcode.com/2024/support
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8. https://adventofcode.com/2024
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9. https://adventofcode.com/2024
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10. https://adventofcode.com/2024/support
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11. https://adventofcode.com/2024/sponsors
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12. https://adventofcode.com/2024/leaderboard
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13. https://adventofcode.com/2024/stats
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14. https://adventofcode.com/2024/sponsors
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15. https://adventofcode.com/2024/sponsors/redirect?url=https%3A%2F%2Fwww%2Elightricks%2Ecom%2Fltxv
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16. https://adventofcode.com/2020/day/2
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17. https://adventofcode.com/2024/day/3/input
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20. https://bsky.app/intent/compose?text=%22Mull+It+Over%22+%2D+Day+3+%2D+Advent+of+Code+2024+%23AdventOfCode+https%3A%2F%2Fadventofcode%2Ecom%2F2024%2Fday%2F3
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21. https://twitter.com/intent/tweet?text=%22Mull+It+Over%22+%2D+Day+3+%2D+Advent+of+Code+2024&url=https%3A%2F%2Fadventofcode%2Ecom%2F2024%2Fday%2F3&related=ericwastl&hashtags=AdventOfCode
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22. javascript:void(0);
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