-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
4 changed files
with
115 additions
and
1 deletion.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| [package] | ||
| name = "AoC2024_19" | ||
| version = "0.1.0" | ||
| edition = "2021" | ||
|
|
||
| [dependencies] | ||
| aoc = { path = "../aoc" } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| #![allow(non_snake_case)] | ||
|
|
||
| use aoc::Puzzle; | ||
| use std::collections::HashMap; | ||
|
|
||
| struct AoC2024_19 {} | ||
|
|
||
| impl AoC2024_19 { | ||
| #[allow(clippy::only_used_in_recursion)] | ||
| fn count( | ||
| &self, | ||
| cache: &mut HashMap<String, usize>, | ||
| design: String, | ||
| towels: &[String], | ||
| ) -> usize { | ||
| if let Some(ans) = cache.get(&design) { | ||
| return *ans; | ||
| } | ||
| if design.is_empty() { | ||
| return 1; | ||
| } | ||
| let ans = towels | ||
| .iter() | ||
| .filter(|towel| design.starts_with(*towel)) | ||
| .map(|towel| { | ||
| self.count(cache, String::from(&design[towel.len()..]), towels) | ||
| }) | ||
| .sum(); | ||
| cache.insert(design, ans); | ||
| ans | ||
| } | ||
| } | ||
|
|
||
| impl aoc::Puzzle for AoC2024_19 { | ||
| type Input = (Vec<String>, Vec<String>); | ||
| type Output1 = usize; | ||
| type Output2 = usize; | ||
|
|
||
| aoc::puzzle_year_day!(2024, 19); | ||
|
|
||
| fn parse_input(&self, lines: Vec<String>) -> Self::Input { | ||
| let towels = lines[0].split(", ").map(String::from).collect(); | ||
| let designs = lines[2..].to_vec(); | ||
| (towels, designs) | ||
| } | ||
|
|
||
| fn part_1(&self, input: &Self::Input) -> Self::Output1 { | ||
| let (towels, designs) = input; | ||
| let mut cache: HashMap<String, usize> = HashMap::new(); | ||
| designs | ||
| .iter() | ||
| .filter(|design| { | ||
| self.count(&mut cache, String::from(*design), towels) > 0 | ||
| }) | ||
| .count() | ||
| } | ||
|
|
||
| fn part_2(&self, input: &Self::Input) -> Self::Output2 { | ||
| let (towels, designs) = input; | ||
| let mut cache: HashMap<String, usize> = HashMap::new(); | ||
| designs | ||
| .iter() | ||
| .map(|design| self.count(&mut cache, String::from(design), towels)) | ||
| .sum() | ||
| } | ||
|
|
||
| fn samples(&self) { | ||
| aoc::puzzle_samples! { | ||
| self, part_1, TEST, 6, | ||
| self, part_2, TEST, 16 | ||
| }; | ||
| } | ||
| } | ||
|
|
||
| fn main() { | ||
| AoC2024_19 {}.run(std::env::args()); | ||
| } | ||
|
|
||
| const TEST: &str = "\ | ||
| r, wr, b, g, bwu, rb, gb, br | ||
| brwrr | ||
| bggr | ||
| gbbr | ||
| rrbgbr | ||
| ubwu | ||
| bwurrg | ||
| brgr | ||
| bbrgwb | ||
| "; | ||
|
|
||
| #[cfg(test)] | ||
| mod tests { | ||
| use super::*; | ||
|
|
||
| #[test] | ||
| pub fn samples() { | ||
| AoC2024_19 {}.samples(); | ||
| } | ||
| } |
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Oops, something went wrong.