82 lines
3.1 KiB
Plaintext
82 lines
3.1 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 1: Not Quite Lisp ---
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Santa was hoping for a white Christmas, but his weather machine's "snow" function is powered by
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stars, and he's fresh out! To save Christmas, he needs you to collect fifty stars by December
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25th.
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Collect stars by helping Santa solve puzzles. Two puzzles will be made available on each day in
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the advent calendar; the second puzzle is unlocked when you complete the first. Each puzzle
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grants one star. Good luck!
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Here's an easy puzzle to warm you up.
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Santa is trying to deliver presents in a large apartment building, but he can't find the right
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floor - the directions he got are a little confusing. He starts on the ground floor (floor 0)
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and then follows the instructions one character at a time.
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An opening parenthesis, (, means he should go up one floor, and a closing parenthesis, ), means
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he should go down one floor.
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The apartment building is very tall, and the basement is very deep; he will never find the top
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or bottom floors.
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For example:
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• (()) and ()() both result in floor 0.
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• ((( and (()(()( both result in floor 3.
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• ))((((( also results in floor 3.
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• ()) and ))( both result in floor -1 (the first basement level).
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• ))) and )())()) both result in floor -3.
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To what floor do the instructions take Santa?
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Your puzzle answer was 138.
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--- Part Two ---
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Now, given the same instructions, find the position of the first character that causes him to
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enter the basement (floor -1). The first character in the instructions has position 1, the
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second character has position 2, and so on.
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For example:
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• ) causes him to enter the basement at character position 1.
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• ()()) causes him to enter the basement at character position 5.
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What is the position of the character that causes Santa to first enter the basement?
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Your puzzle answer was 1771.
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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/1/input
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. https://twitter.com/intent/tweet?text=I%27ve+completed+%22Not+Quite+Lisp%22+%2D+Day+1+%2D+Advent+of+Code&url=http%3A%2F%2Fadventofcode%2Ecom%2Fday%2F1&related=ericwastl&hashtags=AdventOfCode
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. https://plus.google.com/share?url=http%3A%2F%2Fadventofcode%2Ecom%2Fday%2F1
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. http://www.reddit.com/submit?url=http%3A%2F%2Fadventofcode%2Ecom%2Fday%2F1&title=I%27ve+completed+%22Not+Quite+Lisp%22+%2D+Day+1+%2D+Advent+of+Code
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