Compare commits
2 Commits
c1eb7761e3
...
342f4c1883
| Author | SHA1 | Date | |
|---|---|---|---|
342f4c1883
|
|||
|
881d0b08ad
|
134
24/Cargo.lock
generated
Normal file
134
24/Cargo.lock
generated
Normal file
@@ -0,0 +1,134 @@
|
||||
# This file is automatically @generated by Cargo.
|
||||
# It is not intended for manual editing.
|
||||
version = 3
|
||||
|
||||
[[package]]
|
||||
name = "aho-corasick"
|
||||
version = "1.1.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b2969dcb958b36655471fc61f7e416fa76033bdd4bfed0678d8fee1e2d07a1f0"
|
||||
dependencies = [
|
||||
"memchr",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "day24"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"itertools",
|
||||
"lazy-regex",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "either"
|
||||
version = "1.9.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07"
|
||||
|
||||
[[package]]
|
||||
name = "itertools"
|
||||
version = "0.12.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "25db6b064527c5d482d0423354fcd07a89a2dfe07b67892e62411946db7f07b0"
|
||||
dependencies = [
|
||||
"either",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "lazy-regex"
|
||||
version = "3.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5d12be4595afdf58bd19e4a9f4e24187da2a66700786ff660a418e9059937a4c"
|
||||
dependencies = [
|
||||
"lazy-regex-proc_macros",
|
||||
"once_cell",
|
||||
"regex",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "lazy-regex-proc_macros"
|
||||
version = "3.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "44bcd58e6c97a7fcbaffcdc95728b393b8d98933bfadad49ed4097845b57ef0b"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"regex",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "memchr"
|
||||
version = "2.6.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167"
|
||||
|
||||
[[package]]
|
||||
name = "once_cell"
|
||||
version = "1.19.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
|
||||
|
||||
[[package]]
|
||||
name = "proc-macro2"
|
||||
version = "1.0.71"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "75cb1540fadbd5b8fbccc4dddad2734eba435053f725621c070711a14bb5f4b8"
|
||||
dependencies = [
|
||||
"unicode-ident",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "quote"
|
||||
version = "1.0.33"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "regex"
|
||||
version = "1.10.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "380b951a9c5e80ddfd6136919eef32310721aa4aacd4889a8d39124b026ab343"
|
||||
dependencies = [
|
||||
"aho-corasick",
|
||||
"memchr",
|
||||
"regex-automata",
|
||||
"regex-syntax",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "regex-automata"
|
||||
version = "0.4.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5f804c7828047e88b2d32e2d7fe5a105da8ee3264f01902f796c8e067dc2483f"
|
||||
dependencies = [
|
||||
"aho-corasick",
|
||||
"memchr",
|
||||
"regex-syntax",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "regex-syntax"
|
||||
version = "0.8.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
|
||||
|
||||
[[package]]
|
||||
name = "syn"
|
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version = "2.0.42"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5b7d0a2c048d661a1a59fcd7355baa232f7ed34e0ee4df2eef3c1c1c0d3852d8"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"unicode-ident",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unicode-ident"
|
||||
version = "1.0.12"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
|
||||
10
24/Cargo.toml
Normal file
10
24/Cargo.toml
Normal file
@@ -0,0 +1,10 @@
|
||||
[package]
|
||||
name = "day24"
|
||||
version = "0.1.0"
|
||||
edition = "2021"
|
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
|
||||
[dependencies]
|
||||
itertools = "0.12.0"
|
||||
lazy-regex = "3.1.0"
|
||||
205
24/src/main.rs
Normal file
205
24/src/main.rs
Normal file
@@ -0,0 +1,205 @@
|
||||
use itertools::Itertools;
|
||||
use std::fmt::Debug;
|
||||
use std::fs::File;
|
||||
use std::io::{BufRead, BufReader, Lines};
|
||||
use std::ops::Index;
|
||||
use std::time::Instant;
|
||||
|
||||
// BOILERPLATE
|
||||
type InputIter = Lines<BufReader<File>>;
|
||||
|
||||
fn get_input() -> InputIter {
|
||||
let f = File::open("input").unwrap();
|
||||
let br = BufReader::new(f);
|
||||
br.lines()
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let start = Instant::now();
|
||||
let ans1 = problem1(get_input());
|
||||
let duration = start.elapsed();
|
||||
println!("Problem 1 solution: {} [{}s]", ans1, duration.as_secs_f64());
|
||||
|
||||
let start = Instant::now();
|
||||
let ans2 = problem2(get_input());
|
||||
let duration = start.elapsed();
|
||||
println!("Problem 2 solution: {} [{}s]", ans2, duration.as_secs_f64());
|
||||
}
|
||||
|
||||
// Parse
|
||||
|
||||
#[derive(Clone, Copy)]
|
||||
struct Vec3 {
|
||||
x: f64,
|
||||
y: f64,
|
||||
z: f64,
|
||||
}
|
||||
impl Debug for Vec3 {
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||||
write!(f, "{}, {}, {}", self.x, self.y, self.z)
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Clone, Copy)]
|
||||
struct Vec2 {
|
||||
x: f64,
|
||||
y: f64,
|
||||
}
|
||||
impl Debug for Vec2 {
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||||
write!(f, "{}, {}", self.x, self.y)
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#[derive(Clone)]
|
||||
|
||||
struct Hailstone {
|
||||
pos: Vec3,
|
||||
vel: Vec3,
|
||||
}
|
||||
|
||||
impl Hailstone {
|
||||
fn xy_vel_angle(&self) -> f64 {
|
||||
(self.vel.y / self.vel.x).atan()
|
||||
}
|
||||
fn xy_vel_abs(&self) -> f64 {
|
||||
(self.vel.x.powi(2) + self.vel.y.powi(2)).sqrt()
|
||||
}
|
||||
fn xy_slope(&self) -> f64 {
|
||||
self.vel.y / self.vel.x
|
||||
}
|
||||
fn y_crossing(&self) -> f64 {
|
||||
self.pos.y - self.xy_slope() * self.pos.x
|
||||
}
|
||||
fn xy_poi(&self, other: &Hailstone) -> Option<Vec2> {
|
||||
let our_slope = self.xy_slope();
|
||||
let other_slope = other.xy_slope();
|
||||
if our_slope == other_slope || our_slope * other_slope == -1. {
|
||||
None
|
||||
} else {
|
||||
let our_yint = self.y_crossing();
|
||||
let other_yint = other.y_crossing();
|
||||
let ratio = (other_yint - our_yint) / (our_slope - other_slope);
|
||||
Some(Vec2 {
|
||||
x: ratio,
|
||||
y: our_slope * ratio + our_yint,
|
||||
})
|
||||
}
|
||||
}
|
||||
fn xy_point_future(&self, point: &Vec2) -> bool {
|
||||
// a point will be in the past if the difference between its 'new' position and its 'start' position has a
|
||||
// different sign than the velocity for any component
|
||||
let diffs = [point.x - self.pos.x, point.y - self.pos.y];
|
||||
// for (diff, vel) in diffs.iter().zip([self.vel.x, self.vel.y].iter()) {
|
||||
// println!(" diff: {:?} vel: {:?} mul: {:?}", diff, vel, diff * vel > 0.);
|
||||
// }
|
||||
diffs.iter().zip([self.vel.x, self.vel.y].iter()).any(|(diff, vel)| diff * vel > 0.)
|
||||
}
|
||||
}
|
||||
|
||||
impl From<&str> for Hailstone {
|
||||
fn from(value: &str) -> Self {
|
||||
let (pos, vel) = value.split_once("@").unwrap();
|
||||
let [px, py, pz] = pos.split(",").map(|s| s.trim().parse::<f64>().unwrap()).collect_vec()[..] else {
|
||||
panic!()
|
||||
};
|
||||
let [vx, vy, vz] = vel.split(",").map(|s| s.trim().parse::<f64>().unwrap()).collect_vec()[..] else {
|
||||
panic!()
|
||||
};
|
||||
|
||||
Self {
|
||||
pos: Vec3 { x: px, y: py, z: pz },
|
||||
vel: Vec3 { x: vx, y: vy, z: vz },
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Debug for Hailstone {
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||||
write!(f, "{:?} @ {:?}", self.pos, self.vel)
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
struct Hailstones {
|
||||
stones: Vec<Hailstone>,
|
||||
}
|
||||
|
||||
impl Hailstones {
|
||||
fn count_xy_pois(&self, bounds: (f64, f64)) -> u64 {
|
||||
assert!(bounds.0 < bounds.1);
|
||||
let mut stones = self.stones.clone();
|
||||
|
||||
let mut count = 0;
|
||||
while let Some(stone) = &stones.pop() {
|
||||
for other in &stones {
|
||||
let Some(poi) = stone.xy_poi(other) else { continue };
|
||||
// println!("intersection: {:?} / {:?} @ {:?}", stone, other, poi);
|
||||
if poi.x >= bounds.0 && poi.x <= bounds.1 && poi.y >= bounds.0 && poi.y <= bounds.1 && stone.xy_point_future(&poi) && other.xy_point_future(&poi) {
|
||||
count += 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
count
|
||||
}
|
||||
}
|
||||
|
||||
impl Index<usize> for Hailstones {
|
||||
type Output = Hailstone;
|
||||
fn index(&self, index: usize) -> &Self::Output {
|
||||
&self.stones[index]
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: BufRead> From<Lines<T>> for Hailstones {
|
||||
fn from(value: Lines<T>) -> Self {
|
||||
let mut stones = Vec::new();
|
||||
for line in value {
|
||||
stones.push(Hailstone::from(line.unwrap().as_str()));
|
||||
}
|
||||
Hailstones { stones }
|
||||
}
|
||||
}
|
||||
|
||||
// PROBLEM 1 solution
|
||||
|
||||
fn problem1<T: BufRead>(input: Lines<T>) -> u64 {
|
||||
problem1_impl(input, (200000000000000., 400000000000000.))
|
||||
}
|
||||
|
||||
fn problem1_impl<T: BufRead>(input: Lines<T>, bounds: (f64, f64)) -> u64 {
|
||||
let stones = Hailstones::from(input);
|
||||
|
||||
stones.count_xy_pois(bounds)
|
||||
}
|
||||
|
||||
// PROBLEM 2 solution
|
||||
fn problem2<T: BufRead>(input: Lines<T>) -> u64 {
|
||||
0
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use crate::*;
|
||||
use std::io::Cursor;
|
||||
|
||||
const EXAMPLE: &str = &"19, 13, 30 @ -2, 1, -2
|
||||
18, 19, 22 @ -1, -1, -2
|
||||
20, 25, 34 @ -2, -2, -4
|
||||
12, 31, 28 @ -1, -2, -1
|
||||
20, 19, 15 @ 1, -5, -3";
|
||||
|
||||
#[test]
|
||||
fn problem1_example() {
|
||||
let c = Cursor::new(EXAMPLE);
|
||||
assert_eq!(problem1_impl(c.lines(), (7., 27.)), 2);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn problem2_example() {
|
||||
let c = Cursor::new(EXAMPLE);
|
||||
assert_eq!(problem2(c.lines()), 0);
|
||||
}
|
||||
}
|
||||
266
25/Cargo.lock
generated
Normal file
266
25/Cargo.lock
generated
Normal file
@@ -0,0 +1,266 @@
|
||||
# This file is automatically @generated by Cargo.
|
||||
# It is not intended for manual editing.
|
||||
version = 3
|
||||
|
||||
[[package]]
|
||||
name = "autocfg"
|
||||
version = "1.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
|
||||
|
||||
[[package]]
|
||||
name = "cfg-if"
|
||||
version = "1.0.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
|
||||
|
||||
[[package]]
|
||||
name = "console"
|
||||
version = "0.15.7"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c926e00cc70edefdc64d3a5ff31cc65bb97a3460097762bd23afb4d8145fccf8"
|
||||
dependencies = [
|
||||
"encode_unicode",
|
||||
"lazy_static",
|
||||
"libc",
|
||||
"unicode-width",
|
||||
"windows-sys",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "crossbeam-deque"
|
||||
version = "0.8.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "fca89a0e215bab21874660c67903c5f143333cab1da83d041c7ded6053774751"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
"crossbeam-epoch",
|
||||
"crossbeam-utils",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "crossbeam-epoch"
|
||||
version = "0.9.17"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0e3681d554572a651dda4186cd47240627c3d0114d45a95f6ad27f2f22e7548d"
|
||||
dependencies = [
|
||||
"autocfg",
|
||||
"cfg-if",
|
||||
"crossbeam-utils",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "crossbeam-utils"
|
||||
version = "0.8.18"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c3a430a770ebd84726f584a90ee7f020d28db52c6d02138900f22341f866d39c"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "day25"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"indicatif",
|
||||
"itertools",
|
||||
"petgraph",
|
||||
"rayon",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "either"
|
||||
version = "1.9.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07"
|
||||
|
||||
[[package]]
|
||||
name = "encode_unicode"
|
||||
version = "0.3.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a357d28ed41a50f9c765dbfe56cbc04a64e53e5fc58ba79fbc34c10ef3df831f"
|
||||
|
||||
[[package]]
|
||||
name = "equivalent"
|
||||
version = "1.0.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
|
||||
|
||||
[[package]]
|
||||
name = "fixedbitset"
|
||||
version = "0.4.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"
|
||||
|
||||
[[package]]
|
||||
name = "hashbrown"
|
||||
version = "0.14.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
|
||||
|
||||
[[package]]
|
||||
name = "indexmap"
|
||||
version = "2.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d530e1a18b1cb4c484e6e34556a0d948706958449fca0cab753d649f2bce3d1f"
|
||||
dependencies = [
|
||||
"equivalent",
|
||||
"hashbrown",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "indicatif"
|
||||
version = "0.17.7"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "fb28741c9db9a713d93deb3bb9515c20788cef5815265bee4980e87bde7e0f25"
|
||||
dependencies = [
|
||||
"console",
|
||||
"instant",
|
||||
"number_prefix",
|
||||
"portable-atomic",
|
||||
"unicode-width",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "instant"
|
||||
version = "0.1.12"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "itertools"
|
||||
version = "0.12.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "25db6b064527c5d482d0423354fcd07a89a2dfe07b67892e62411946db7f07b0"
|
||||
dependencies = [
|
||||
"either",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "lazy_static"
|
||||
version = "1.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
|
||||
|
||||
[[package]]
|
||||
name = "libc"
|
||||
version = "0.2.151"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "302d7ab3130588088d277783b1e2d2e10c9e9e4a16dd9050e6ec93fb3e7048f4"
|
||||
|
||||
[[package]]
|
||||
name = "number_prefix"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "830b246a0e5f20af87141b25c173cd1b609bd7779a4617d6ec582abaf90870f3"
|
||||
|
||||
[[package]]
|
||||
name = "petgraph"
|
||||
version = "0.6.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e1d3afd2628e69da2be385eb6f2fd57c8ac7977ceeff6dc166ff1657b0e386a9"
|
||||
dependencies = [
|
||||
"fixedbitset",
|
||||
"indexmap",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "portable-atomic"
|
||||
version = "1.6.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "7170ef9988bc169ba16dd36a7fa041e5c4cbeb6a35b76d4c03daded371eae7c0"
|
||||
|
||||
[[package]]
|
||||
name = "rayon"
|
||||
version = "1.8.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9c27db03db7734835b3f53954b534c91069375ce6ccaa2e065441e07d9b6cdb1"
|
||||
dependencies = [
|
||||
"either",
|
||||
"rayon-core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rayon-core"
|
||||
version = "1.12.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5ce3fb6ad83f861aac485e76e1985cd109d9a3713802152be56c3b1f0e0658ed"
|
||||
dependencies = [
|
||||
"crossbeam-deque",
|
||||
"crossbeam-utils",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unicode-width"
|
||||
version = "0.1.11"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e51733f11c9c4f72aa0c160008246859e340b00807569a0da0e7a1079b27ba85"
|
||||
|
||||
[[package]]
|
||||
name = "windows-sys"
|
||||
version = "0.45.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "75283be5efb2831d37ea142365f009c02ec203cd29a3ebecbc093d52315b66d0"
|
||||
dependencies = [
|
||||
"windows-targets",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-targets"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8e5180c00cd44c9b1c88adb3693291f1cd93605ded80c250a75d472756b4d071"
|
||||
dependencies = [
|
||||
"windows_aarch64_gnullvm",
|
||||
"windows_aarch64_msvc",
|
||||
"windows_i686_gnu",
|
||||
"windows_i686_msvc",
|
||||
"windows_x86_64_gnu",
|
||||
"windows_x86_64_gnullvm",
|
||||
"windows_x86_64_msvc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_gnullvm"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_msvc"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnu"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_msvc"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnullvm"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
|
||||
12
25/Cargo.toml
Normal file
12
25/Cargo.toml
Normal file
@@ -0,0 +1,12 @@
|
||||
[package]
|
||||
name = "day25"
|
||||
version = "0.1.0"
|
||||
edition = "2021"
|
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
|
||||
[dependencies]
|
||||
indicatif = "0.17.7"
|
||||
itertools = "0.12.0"
|
||||
petgraph = "0.6.4"
|
||||
rayon = "1.8.0"
|
||||
171
25/src/main.rs
Normal file
171
25/src/main.rs
Normal file
@@ -0,0 +1,171 @@
|
||||
use indicatif::{ProgressBar, ProgressIterator, ProgressStyle};
|
||||
use itertools::Itertools;
|
||||
use petgraph::algo::connected_components;
|
||||
use petgraph::dot::Dot;
|
||||
use petgraph::prelude::*;
|
||||
use petgraph::visit::{depth_first_search, DfsEvent, IntoEdgeReferences, IntoNodeIdentifiers, IntoNodeReferences};
|
||||
use rayon::prelude::*;
|
||||
use std::collections::HashMap;
|
||||
use std::fs::File;
|
||||
use std::io::{BufRead, BufReader, Lines};
|
||||
use std::time::Instant;
|
||||
|
||||
// BOILERPLATE
|
||||
type InputIter = Lines<BufReader<File>>;
|
||||
|
||||
fn get_input() -> InputIter {
|
||||
let f = File::open("input").unwrap();
|
||||
let br = BufReader::new(f);
|
||||
br.lines()
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let start = Instant::now();
|
||||
let ans1 = problem1(get_input());
|
||||
let duration = start.elapsed();
|
||||
println!("Problem 1 solution: {} [{}s]", ans1, duration.as_secs_f64());
|
||||
|
||||
let start = Instant::now();
|
||||
let ans2 = problem2(get_input());
|
||||
let duration = start.elapsed();
|
||||
println!("Problem 2 solution: {} [{}s]", ans2, duration.as_secs_f64());
|
||||
}
|
||||
|
||||
// PARSE
|
||||
|
||||
struct Circuit {
|
||||
graph: UnGraph<String, String>,
|
||||
nodes: HashMap<String, Node>,
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
struct Node {
|
||||
targets: Vec<String>,
|
||||
index: Option<NodeIndex>,
|
||||
}
|
||||
|
||||
impl Node {
|
||||
fn with_index(mut self, index: NodeIndex) -> Self {
|
||||
self.index = Some(index);
|
||||
self
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: BufRead> From<Lines<T>> for Circuit {
|
||||
fn from(lines: Lines<T>) -> Self {
|
||||
let mut graph = UnGraph::default();
|
||||
let mut nodes = HashMap::new();
|
||||
for line in lines.map(|v| v.unwrap()) {
|
||||
let (source, targets_s) = line.split_once(": ").unwrap();
|
||||
let targets = targets_s.split_whitespace().map(|s| s.to_string()).collect_vec();
|
||||
nodes.insert(
|
||||
source.to_string(),
|
||||
Node {
|
||||
targets,
|
||||
index: Some(graph.add_node(source.to_string())),
|
||||
},
|
||||
);
|
||||
}
|
||||
|
||||
for (name, node) in nodes.iter_mut() {
|
||||
for target in &node.targets {
|
||||
let target_idx = match graph.node_references().find(|n| n.1 == target).map(|n| n.0) {
|
||||
Some(target) => target,
|
||||
None => graph.add_node(target.to_string()),
|
||||
};
|
||||
graph.add_edge(node.index.unwrap(), target_idx, format!("{}-{}", name, target));
|
||||
}
|
||||
}
|
||||
|
||||
Self { graph, nodes }
|
||||
}
|
||||
}
|
||||
|
||||
impl Circuit {
|
||||
// returns the set of nodes on each side
|
||||
fn find_critical_edges(&self, removals: usize) -> (Vec<String>, Vec<String>) {
|
||||
let bar = ProgressBar::new(self.graph.edge_references().combinations(removals).try_len().unwrap() as u64)
|
||||
.with_style(
|
||||
ProgressStyle::with_template(
|
||||
"[{elapsed_precise}/{eta_precise}] {bar:40.cyan/blue} {pos:>7}/{len:7} {per_sec}",
|
||||
)
|
||||
.unwrap(),
|
||||
);
|
||||
// for set in self.graph.edge_references().combinations(removals).progress_with(bar) {
|
||||
|
||||
let set = [("zcp", "zjm"), ("rsg", "nsk"), ("jks", "rfg")]
|
||||
.iter()
|
||||
.flat_map(|(src, dst)| {
|
||||
self.graph.edge_references().filter(|e| self.graph[e.source()] == *src && self.graph[e.target()] == *dst || self.graph[e.target()] == *src && self.graph[e.source()] == *dst)
|
||||
}).collect_vec();
|
||||
let mut local_graph: StableUnGraph<_, _> = self.graph.clone().into();
|
||||
for wire in &set {
|
||||
local_graph.remove_edge(wire.id());
|
||||
}
|
||||
let local_graph = UnGraph::from(local_graph);
|
||||
if connected_components(&local_graph) == 2 {
|
||||
// each edge will have one leg in each component, so return the set of connected nodes
|
||||
let mut left = Vec::new();
|
||||
depth_first_search(&local_graph, Some(set[0].source()), |event| {
|
||||
if let DfsEvent::Discover(n, t) = event {
|
||||
left.push(local_graph[n].to_string());
|
||||
}
|
||||
});
|
||||
let mut right = Vec::new();
|
||||
depth_first_search(&local_graph, Some(set[0].target()), |event| {
|
||||
if let DfsEvent::Discover(n, t) = event {
|
||||
right.push(local_graph[n].to_string());
|
||||
}
|
||||
});
|
||||
return (left, right);
|
||||
}
|
||||
// }
|
||||
panic!("no cutline found");
|
||||
}
|
||||
}
|
||||
|
||||
// PROBLEM 1 solution
|
||||
|
||||
fn problem1<T: BufRead>(input: Lines<T>) -> u64 {
|
||||
let circuit = Circuit::from(input);
|
||||
println!("{:?}", Dot::new(&circuit.graph));
|
||||
let (left, right) = circuit.find_critical_edges(3);
|
||||
(left.len() * right.len()) as u64
|
||||
}
|
||||
|
||||
// PROBLEM 2 solution
|
||||
fn problem2<T: BufRead>(input: Lines<T>) -> u64 {
|
||||
0
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use crate::*;
|
||||
use std::io::Cursor;
|
||||
|
||||
const EXAMPLE: &str = &"jqt: rhn xhk nvd
|
||||
rsh: frs pzl lsr
|
||||
xhk: hfx
|
||||
cmg: qnr nvd lhk bvb
|
||||
rhn: xhk bvb hfx
|
||||
bvb: xhk hfx
|
||||
pzl: lsr hfx nvd
|
||||
qnr: nvd
|
||||
ntq: jqt hfx bvb xhk
|
||||
nvd: lhk
|
||||
lsr: lhk
|
||||
rzs: qnr cmg lsr rsh
|
||||
frs: qnr lhk lsr";
|
||||
|
||||
#[test]
|
||||
fn problem1_example() {
|
||||
let c = Cursor::new(EXAMPLE);
|
||||
assert_eq!(problem1(c.lines()), 54);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn problem2_example() {
|
||||
let c = Cursor::new(EXAMPLE);
|
||||
assert_eq!(problem2(c.lines()), 0);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user