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4 commits
4022aa6e68 ... 1b59efa250

Author SHA1 Message Date
Xiretza 1b59efa250 2022 day14/rust: cleanup 2022-12-14 19:33:01 +01:00
Xiretza f41c0177d8 2022 day14/rust: add solution 2022-12-14 19:20:45 +01:00
Xiretza 7db15c9cf7 common/rust: add Line type 2022-12-14 19:19:42 +01:00
Xiretza 26700274c3 2022 day14: add data 2022-12-14 19:13:49 +01:00
7 changed files with 280 additions and 2 deletions
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2
2022/data/day14.expected Normal file
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27194

123
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512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
511,86 -> 515,86
485,22 -> 489,22
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
509,150 -> 513,150
516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
494,24 -> 498,24
516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
497,154 -> 501,154
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
523,80 -> 527,80
512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
505,17 -> 510,17
510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
498,17 -> 503,17
512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
509,31 -> 509,32 -> 513,32 -> 513,31
504,90 -> 504,91 -> 513,91 -> 513,90
493,48 -> 493,49 -> 512,49 -> 512,48
479,26 -> 483,26
488,24 -> 492,24
512,152 -> 516,152
491,26 -> 495,26
493,48 -> 493,49 -> 512,49 -> 512,48
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
517,80 -> 521,80
510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
514,83 -> 518,83
510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
529,86 -> 533,86
526,83 -> 530,83
497,13 -> 502,13
516,108 -> 516,109 -> 520,109 -> 520,108
512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
503,154 -> 507,154
494,15 -> 499,15
520,77 -> 524,77
506,152 -> 510,152
516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
493,48 -> 493,49 -> 512,49 -> 512,48
510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
516,108 -> 516,109 -> 520,109 -> 520,108
512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
488,20 -> 492,20
500,152 -> 504,152
509,31 -> 509,32 -> 513,32 -> 513,31
509,154 -> 513,154
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
523,86 -> 527,86
516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
491,22 -> 495,22
497,26 -> 501,26
506,148 -> 510,148
516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
516,108 -> 516,109 -> 520,109 -> 520,108
501,15 -> 506,15
516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
491,17 -> 496,17
516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
504,90 -> 504,91 -> 513,91 -> 513,90
503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
482,24 -> 486,24
510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
509,31 -> 509,32 -> 513,32 -> 513,31
516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
515,154 -> 519,154
517,86 -> 521,86
485,26 -> 489,26
504,90 -> 504,91 -> 513,91 -> 513,90
510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
503,150 -> 507,150
520,83 -> 524,83
508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62

10
2022/day14/rust/Cargo.toml Normal file
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@ -0,0 +1,10 @@
[package]
name = "rust_2022_14"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
aoc = { path = "../../../common/rust" }
itertools = "0.10.5"

80
2022/day14/rust/src/main.rs Normal file
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@ -0,0 +1,80 @@
#![warn(clippy::pedantic)]
use std::{collections::HashSet, io::stdin};
use aoc::vec2::{Line, Vec2};
use itertools::Itertools;
fn parse_points(s: &str) -> impl Iterator<Item = Vec2> + '_ {
s.split(" -> ").map(|p| {
let (x, y) = p.split_once(',').unwrap();
let x = x.parse().unwrap();
let y = y.parse().unwrap();
(x, y).into()
})
}
fn simulate(structures: HashSet<Vec2>, floor: Option<usize>) -> usize {
let mut points = structures;
let lowest = points.iter().map(|v| v.y).max().unwrap();
let start = Vec2::new(500, 0);
let mut pieces = 0;
'pieces: loop {
let mut pos = start;
'fall: loop {
let new_pos = [(0, 1), (-1, 1), (1, 1)]
.into_iter()
.map(|direction| pos + direction.into())
.find(|pos| !points.contains(pos));
if let Some(new_pos) = new_pos {
pos = new_pos;
match floor {
Some(offset) => {
if pos.y >= lowest + i32::try_from(offset).unwrap() - 1 {
// landed on the floor
break 'fall;
}
}
None => {
if pos.y >= lowest {
// fell into the void
break 'pieces;
}
}
}
} else {
// stuck
break 'fall;
}
}
points.insert(pos);
pieces += 1;
if pos == start {
// all filled up
break 'pieces;
}
}
pieces
}
fn main() {
let points: HashSet<Vec2> = stdin()
.lines()
.flat_map(|line| {
parse_points(&line.unwrap())
.tuple_windows()
.map(|(start, end)| Line { start, end })
.collect::<Vec<_>>()
})
.flat_map(|line| line.points().unwrap())
.collect();
println!("{}", simulate(points.clone(), None));
println!("{}", simulate(points, Some(2)));
}

8
Cargo.lock generated
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@ -593,6 +593,14 @@ dependencies = [
"nom",
]
[[package]]
name = "rust_2022_14"
version = "0.1.0"
dependencies = [
"aoc",
"itertools",
]
[[package]]
name = "ryu"
version = "1.0.11"

1
Cargo.toml
View file

@ -23,4 +23,5 @@ members = [
"2022/day11/rust",
"2022/day12/rust",
"2022/day13/rust",
"2022/day14/rust",
]

58
common/rust/src/vec2.rs
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@ -6,8 +6,8 @@ use std::{
#[derive(Debug, Default, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct Vec2 {
x: i32, // increases toward right
y: i32, // increases toward top
pub x: i32, // increases toward right
pub y: i32, // increases toward top
}
impl Vec2 {
@ -140,3 +140,57 @@ impl FromStr for Direction {
}
}
}
/// A line from one point to another.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct Line {
pub start: Vec2,
pub end: Vec2,
}
impl Line {
/// Returns an iterator over the line's points represented as [`Vec2`], including the start and
/// end points.
///
/// Only works for orthogonal lines.
#[must_use]
pub fn points(self) -> Option<LinePoints> {
LinePoints::try_from(self).ok()
}
}
/// An iterator over a line's points. See [`Line::points()`] for details.
pub struct LinePoints {
line: Option<Line>,
}
impl TryFrom<Line> for LinePoints {
type Error = ();
fn try_from(line: Line) -> Result<Self, Self::Error> {
if line.start.x == line.end.x || line.start.y == line.end.y {
Ok(Self { line: Some(line) })
} else {
Err(())
}
}
}
impl Iterator for LinePoints {
type Item = Vec2;
fn next(&mut self) -> Option<Self::Item> {
let Some(line) = self.line.as_mut() else { return None };
let delta = (line.end - line.start).map(i32::signum);
let p = line.start;
line.start += delta;
if delta == Vec2::new(0, 0) {
self.line = None;
}
Some(p)
}
}