99 lines
3.9 KiB
Plaintext
99 lines
3.9 KiB
Plaintext
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Advent of Code
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br0xen 40*
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• [About]
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• [Stats]
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• [Leaderboard]
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• [Settings]
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• [Log out]
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--- Day 16: Aunt Sue ---
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Your Aunt Sue has given you a wonderful gift, and you'd like to send her a thank you card.
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However, there's a small problem: she signed it "From, Aunt Sue".
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You have 500 Aunts named "Sue".
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So, to avoid sending the card to the wrong person, you need to figure out which Aunt Sue (which
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you conveniently number 1 to 500, for sanity) gave you the gift. You open the present and, as
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luck would have it, good ol' Aunt Sue got you a My First Crime Scene Analysis Machine! Just
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what you wanted. Or needed, as the case may be.
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The My First Crime Scene Analysis Machine (MFCSAM for short) can detect a few specific
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compounds in a given sample, as well as how many distinct kinds of those compounds there are.
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According to the instructions, these are what the MFCSAM can detect:
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• children, by human DNA age analysis.
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• cats. It doesn't differentiate individual breeds.
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• Several seemingly random breeds of dog: samoyeds, pomeranians, akitas, and vizslas.
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• goldfish. No other kinds of fish.
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• trees, all in one group.
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• cars, presumably by exhaust or gasoline or something.
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• perfumes, which is handy, since many of your Aunts Sue wear a few kinds.
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In fact, many of your Aunts Sue have many of these. You put the wrapping from the gift into the
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MFCSAM. It beeps inquisitively at you a few times and then prints out a message on ticker tape:
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children: 3
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cats: 7
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samoyeds: 2
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pomeranians: 3
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akitas: 0
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vizslas: 0
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goldfish: 5
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trees: 3
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cars: 2
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perfumes: 1
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You make a list of the things you can remember about each Aunt Sue. Things missing from your
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list aren't zero - you simply don't remember the value.
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What is the number of the Sue that got you the gift?
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Your puzzle answer was 373.
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--- Part Two ---
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As you're about to send the thank you note, something in the MFCSAM's instructions catches your
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eye. Apparently, it has an outdated retroencabulator, and so the output from the machine isn't
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exact values - some of them indicate ranges.
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In particular, the cats and trees readings indicates that there are greater than that many (due
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to the unpredictable nuclear decay of cat dander and tree pollen), while the pomeranians and
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goldfish readings indicate that there are fewer than that many (due to the modial interaction
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of magnetoreluctance).
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What is the number of the real Aunt Sue?
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Your puzzle answer was 260.
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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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You can also [Shareon Twitter Google+ Reddit] this puzzle.
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References
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Visible links
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. http://adventofcode.com/
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. http://adventofcode.com/about
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. http://adventofcode.com/stats
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. http://adventofcode.com/leaderboard
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. http://adventofcode.com/settings
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. http://adventofcode.com/auth/logout
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. https://en.wikipedia.org/wiki/Samoyed_%28dog%29
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. https://en.wikipedia.org/wiki/Pomeranian_%28dog%29
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. https://en.wikipedia.org/wiki/Akita_%28dog%29
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. https://en.wikipedia.org/wiki/Vizsla
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. https://en.wikipedia.org/wiki/Ticker_tape
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. https://www.youtube.com/watch?v=RXJKdh1KZ0w
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. http://adventofcode.com/
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. http://adventofcode.com/day/16/input
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. https://twitter.com/intent/tweet?text=I%27ve+completed+%22Aunt+Sue%22+%2D+Day+16+%2D+Advent+of+Code&url=http%3A%2F%2Fadventofcode%2Ecom%2Fday%2F16&related=ericwastl&hashtags=AdventOfCode
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. https://plus.google.com/share?url=http%3A%2F%2Fadventofcode%2Ecom%2Fday%2F16
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. http://www.reddit.com/submit?url=http%3A%2F%2Fadventofcode%2Ecom%2Fday%2F16&title=I%27ve+completed+%22Aunt+Sue%22+%2D+Day+16+%2D+Advent+of+Code
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