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b/Cargo.toml @@ -5,7 +5,9 @@ edition = "2021" [dependencies] anyhow = "1.0.75" +indicatif = { version = "0.17.7", features = ["rayon"] } itertools = "0.12.0" +rayon = "1.8.0" regex = "1.10.2" serde = { version = "1.0.193", features = ["derive"] } serde_json = "1.0.108" diff --git a/src/bin/05.rs b/src/bin/05.rs index 65506f5..b463bb9 100644 --- a/src/bin/05.rs +++ b/src/bin/05.rs @@ -1,4 +1,5 @@ use itertools::Itertools; +use rayon::iter::{IntoParallelIterator, IntoParallelRefIterator, ParallelIterator}; const INPUT: &str = include_str!("../../input/05"); const TEST_INPUT: &str = include_str!("../../input/05-test"); @@ -22,7 +23,14 @@ fn part1(input: &str) -> u64 { } fn part2(input: &str) -> u64 { - 0 + let garden = Garden::parse(input); + garden + .seed_ranges + .par_iter() + .flat_map(|range| range.par_iter()) + .map(|seed| garden.map(seed)) + .min() + .unwrap() } #[derive(Debug)] @@ -68,6 +76,13 @@ struct SeedRange { length: u64, } +impl SeedRange { + fn par_iter(&self) -> impl ParallelIterator { + let end = self.start + self.length; + (self.start..=end).into_par_iter() + } +} + #[derive(Debug)] struct Map { ranges: Vec,