93 lines
4.1 KiB
Plaintext
93 lines
4.1 KiB
Plaintext
Advent of Code
|
||
|
||
br0xen 40*
|
||
|
||
• [About]
|
||
• [Stats]
|
||
• [Leaderboard]
|
||
• [Settings]
|
||
• [Log out]
|
||
|
||
--- Day 15: Science for Hungry People ---
|
||
|
||
Today, you set out on the task of perfecting your milk-dunking cookie recipe. All you have to
|
||
do is find the right balance of ingredients.
|
||
|
||
Your recipe leaves room for exactly 100 teaspoons of ingredients. You make a list of the
|
||
remaining ingredients you could use to finish the recipe (your puzzle input) and their
|
||
properties per teaspoon:
|
||
|
||
• capacity (how well it helps the cookie absorb milk)
|
||
• durability (how well it keeps the cookie intact when full of milk)
|
||
• flavor (how tasty it makes the cookie)
|
||
• texture (how it improves the feel of the cookie)
|
||
• calories (how many calories it adds to the cookie)
|
||
|
||
You can only measure ingredients in whole-teaspoon amounts accurately, and you have to be
|
||
accurate so you can reproduce your results in the future. The total score of a cookie can be
|
||
found by adding up each of the properties (negative totals become 0) and then multiplying
|
||
together everything except calories.
|
||
|
||
For instance, suppose you have these two ingredients:
|
||
|
||
Butterscotch: capacity -1, durability -2, flavor 6, texture 3, calories 8
|
||
Cinnamon: capacity 2, durability 3, flavor -2, texture -1, calories 3
|
||
|
||
Then, choosing to use 44 teaspoons of butterscotch and 56 teaspoons of cinnamon (because the
|
||
amounts of each ingredient must add up to 100) would result in a cookie with the following
|
||
properties:
|
||
|
||
• A capacity of 44*-1 + 56*2 = 68
|
||
• A durability of 44*-2 + 56*3 = 80
|
||
• A flavor of 44*6 + 56*-2 = 152
|
||
• A texture of 44*3 + 56*-1 = 76
|
||
|
||
Multiplying these together (68 * 80 * 152 * 76, ignoring calories for now) results in a total
|
||
score of 62842880, which happens to be the best score possible given these ingredients. If any
|
||
properties had produced a negative total, it would have instead become zero, causing the whole
|
||
score to multiply to zero.
|
||
|
||
Given the ingredients in your kitchen and their properties, what is the total score of the
|
||
highest-scoring cookie you can make?
|
||
|
||
Your puzzle answer was 18965440.
|
||
|
||
--- Part Two ---
|
||
|
||
Your cookie recipe becomes wildly popular! Someone asks if you can make another recipe that has
|
||
exactly 500 calories per cookie (so they can use it as a meal replacement). Keep the rest of
|
||
your award-winning process the same (100 teaspoons, same ingredients, same scoring system).
|
||
|
||
For example, given the ingredients above, if you had instead selected 40 teaspoons of
|
||
butterscotch and 60 teaspoons of cinnamon (which still adds to 100), the total calorie count
|
||
would be 40*8 + 60*3 = 500. The total score would go down, though: only 57600000, the best you
|
||
can do in such trying circumstances.
|
||
|
||
Given the ingredients in your kitchen and their properties, what is the total score of the
|
||
highest-scoring cookie you can make with a calorie total of 500?
|
||
|
||
Your puzzle answer was 15862900.
|
||
|
||
Both parts of this puzzle are complete! They provide two gold stars: **
|
||
|
||
At this point, you should return to your advent calendar and try another puzzle.
|
||
|
||
If you still want to see it, you can get your puzzle input.
|
||
|
||
You can also [Shareon Twitter Google+ Reddit] this puzzle.
|
||
|
||
References
|
||
|
||
Visible links
|
||
. http://adventofcode.com/
|
||
. http://adventofcode.com/about
|
||
. http://adventofcode.com/stats
|
||
. http://adventofcode.com/leaderboard
|
||
. http://adventofcode.com/settings
|
||
. http://adventofcode.com/auth/logout
|
||
. http://adventofcode.com/
|
||
. http://adventofcode.com/day/15/input
|
||
. 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
|
||
. https://plus.google.com/share?url=http%3A%2F%2Fadventofcode%2Ecom%2Fday%2F15
|
||
. 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
|