93 lines
4.1 KiB
Plaintext
93 lines
4.1 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 15: Science for Hungry People ---
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Today, you set out on the task of perfecting your milk-dunking cookie recipe. All you have to
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do is find the right balance of ingredients.
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Your recipe leaves room for exactly 100 teaspoons of ingredients. You make a list of the
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remaining ingredients you could use to finish the recipe (your puzzle input) and their
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properties per teaspoon:
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• capacity (how well it helps the cookie absorb milk)
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• durability (how well it keeps the cookie intact when full of milk)
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• flavor (how tasty it makes the cookie)
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• texture (how it improves the feel of the cookie)
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• calories (how many calories it adds to the cookie)
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You can only measure ingredients in whole-teaspoon amounts accurately, and you have to be
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accurate so you can reproduce your results in the future. The total score of a cookie can be
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found by adding up each of the properties (negative totals become 0) and then multiplying
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together everything except calories.
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For instance, suppose you have these two ingredients:
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Butterscotch: capacity -1, durability -2, flavor 6, texture 3, calories 8
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Cinnamon: capacity 2, durability 3, flavor -2, texture -1, calories 3
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Then, choosing to use 44 teaspoons of butterscotch and 56 teaspoons of cinnamon (because the
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amounts of each ingredient must add up to 100) would result in a cookie with the following
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properties:
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• A capacity of 44*-1 + 56*2 = 68
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• A durability of 44*-2 + 56*3 = 80
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• A flavor of 44*6 + 56*-2 = 152
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• A texture of 44*3 + 56*-1 = 76
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Multiplying these together (68 * 80 * 152 * 76, ignoring calories for now) results in a total
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score of 62842880, which happens to be the best score possible given these ingredients. If any
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properties had produced a negative total, it would have instead become zero, causing the whole
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score to multiply to zero.
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Given the ingredients in your kitchen and their properties, what is the total score of the
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highest-scoring cookie you can make?
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Your puzzle answer was 18965440.
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--- Part Two ---
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Your cookie recipe becomes wildly popular! Someone asks if you can make another recipe that has
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exactly 500 calories per cookie (so they can use it as a meal replacement). Keep the rest of
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your award-winning process the same (100 teaspoons, same ingredients, same scoring system).
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For example, given the ingredients above, if you had instead selected 40 teaspoons of
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butterscotch and 60 teaspoons of cinnamon (which still adds to 100), the total calorie count
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would be 40*8 + 60*3 = 500. The total score would go down, though: only 57600000, the best you
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can do in such trying circumstances.
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Given the ingredients in your kitchen and their properties, what is the total score of the
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highest-scoring cookie you can make with a calorie total of 500?
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Your puzzle answer was 15862900.
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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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. http://adventofcode.com/
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. http://adventofcode.com/day/15/input
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. https://twitter.com/intent/tweet?text=I%27ve+completed+%22Science+for+Hungry+People%22+%2D+Day+15+%2D+Advent+of+Code&url=http%3A%2F%2Fadventofcode%2Ecom%2Fday%2F15&related=ericwastl&hashtags=AdventOfCode
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. https://plus.google.com/share?url=http%3A%2F%2Fadventofcode%2Ecom%2Fday%2F15
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. http://www.reddit.com/submit?url=http%3A%2F%2Fadventofcode%2Ecom%2Fday%2F15&title=I%27ve+completed+%22Science+for+Hungry+People%22+%2D+Day+15+%2D+Advent+of+Code
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