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6 changed files with 7 additions and 384 deletions

197
Cargo.lock generated
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@ -17,21 +17,9 @@ version = "1.0.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
[[package]]
name = "aho-corasick"
version = "1.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b2969dcb958b36655471fc61f7e416fa76033bdd4bfed0678d8fee1e2d07a1f0"
dependencies = [
"memchr",
]
[[package]]
name = "aoc"
version = "46.0.0"
dependencies = [
"z3",
]
[[package]]
name = "autocfg"
@ -60,38 +48,12 @@ version = "0.21.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "35636a1494ede3b646cc98f74f8e62c773a38a659ebc777a2cf26b9b74171df9"
[[package]]
name = "bindgen"
version = "0.66.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f2b84e06fc203107bfbad243f4aba2af864eb7db3b1cf46ea0a023b0b433d2a7"
dependencies = [
"bitflags 2.4.1",
"cexpr",
"clang-sys",
"lazy_static",
"lazycell",
"peeking_take_while",
"proc-macro2",
"quote",
"regex",
"rustc-hash",
"shlex",
"syn 2.0.42",
]
[[package]]
name = "bitflags"
version = "1.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
[[package]]
name = "bitflags"
version = "2.4.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "327762f6e5a765692301e5bb513e0d9fef63be86bbc14528052b1cd3e6f03e07"
[[package]]
name = "bumpalo"
version = "3.11.1"
@ -110,41 +72,12 @@ version = "1.0.78"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a20104e2335ce8a659d6dd92a51a767a0c062599c73b343fd152cb401e828c3d"
[[package]]
name = "cexpr"
version = "0.6.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6fac387a98bb7c37292057cffc56d62ecb629900026402633ae9160df93a8766"
dependencies = [
"nom",
]
[[package]]
name = "cfg-if"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
[[package]]
name = "clang-sys"
version = "1.6.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c688fc74432808e3eb684cae8830a86be1d66a2bd58e1f248ed0960a590baf6f"
dependencies = [
"glob",
"libc",
"libloading",
]
[[package]]
name = "cmake"
version = "0.1.50"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a31c789563b815f77f4250caee12365734369f942439b7defd71e18a48197130"
dependencies = [
"cc",
]
[[package]]
name = "core-foundation"
version = "0.9.3"
@ -278,12 +211,6 @@ version = "0.28.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6fb8d784f27acf97159b40fc4db5ecd8aa23b9ad5ef69cdd136d3bc80665f0c0"
[[package]]
name = "glob"
version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d2fabcfbdc87f4758337ca535fb41a6d701b65693ce38287d856d1674551ec9b"
[[package]]
name = "h2"
version = "0.3.15"
@ -445,28 +372,12 @@ version = "1.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
[[package]]
name = "lazycell"
version = "1.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
[[package]]
name = "libc"
version = "0.2.150"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "89d92a4743f9a61002fae18374ed11e7973f530cb3a3255fb354818118b2203c"
[[package]]
name = "libloading"
version = "0.7.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b67380fd3b2fbe7527a606e18729d21c6f3951633d0500574c4dc22d2d638b9f"
dependencies = [
"cfg-if",
"winapi",
]
[[package]]
name = "log"
version = "0.4.17"
@ -488,12 +399,6 @@ version = "0.3.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2a60c7ce501c71e03a9c9c0d35b861413ae925bd979cc7a4e30d060069aaac8d"
[[package]]
name = "minimal-lexical"
version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
[[package]]
name = "miniz_oxide"
version = "0.7.1"
@ -532,16 +437,6 @@ dependencies = [
"tempfile",
]
[[package]]
name = "nom"
version = "7.1.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d273983c5a657a70a3e8f2a01329822f3b8c8172b73826411a55751e404a0a4a"
dependencies = [
"memchr",
"minimal-lexical",
]
[[package]]
name = "num_cpus"
version = "1.15.0"
@ -573,7 +468,7 @@ version = "0.10.45"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b102428fd03bc5edf97f62620f7298614c45cedf287c271e7ed450bbaf83f2e1"
dependencies = [
"bitflags 1.3.2",
"bitflags",
"cfg-if",
"foreign-types",
"libc",
@ -590,7 +485,7 @@ checksum = "b501e44f11665960c7e7fcf062c7d96a14ade4aa98116c004b2e37b5be7d736c"
dependencies = [
"proc-macro2",
"quote",
"syn 1.0.107",
"syn",
]
[[package]]
@ -612,12 +507,6 @@ dependencies = [
"vcpkg",
]
[[package]]
name = "peeking_take_while"
version = "0.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "19b17cddbe7ec3f8bc800887bab5e717348c95ea2ca0b1bf0837fb964dc67099"
[[package]]
name = "percent-encoding"
version = "2.2.0"
@ -672,38 +561,9 @@ version = "0.2.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
dependencies = [
"bitflags 1.3.2",
"bitflags",
]
[[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 = "remove_dir_all"
version = "0.5.3"
@ -757,12 +617,6 @@ version = "0.1.23"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
[[package]]
name = "rustc-hash"
version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
[[package]]
name = "ryu"
version = "1.0.12"
@ -794,7 +648,7 @@ version = "2.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2bc1bb97804af6631813c55739f771071e0f2ed33ee20b68c86ec505d906356c"
dependencies = [
"bitflags 1.3.2",
"bitflags",
"core-foundation",
"core-foundation-sys",
"libc",
@ -840,12 +694,6 @@ dependencies = [
"serde",
]
[[package]]
name = "shlex"
version = "1.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a7cee0529a6d40f580e7a5e6c495c8fbfe21b7b52795ed4bb5e62cdf92bc6380"
[[package]]
name = "slab"
version = "0.4.7"
@ -886,24 +734,13 @@ dependencies = [
"unicode-ident",
]
[[package]]
name = "syn"
version = "2.0.42"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5b7d0a2c048d661a1a59fcd7355baa232f7ed34e0ee4df2eef3c1c1c0d3852d8"
dependencies = [
"proc-macro2",
"quote",
"unicode-ident",
]
[[package]]
name = "system-configuration"
version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ba3a3adc5c275d719af8cb4272ea1c4a6d668a777f37e115f6d11ddbc1c8e0e7"
dependencies = [
"bitflags 1.3.2",
"bitflags",
"core-foundation",
"system-configuration-sys",
]
@ -1094,7 +931,7 @@ dependencies = [
"once_cell",
"proc-macro2",
"quote",
"syn 1.0.107",
"syn",
"wasm-bindgen-shared",
]
@ -1128,7 +965,7 @@ checksum = "07bc0c051dc5f23e307b13285f9d75df86bfdf816c5721e573dec1f9b8aa193c"
dependencies = [
"proc-macro2",
"quote",
"syn 1.0.107",
"syn",
"wasm-bindgen-backend",
"wasm-bindgen-shared",
]
@ -1289,23 +1126,3 @@ dependencies = [
"cfg-if",
"windows-sys 0.48.0",
]
[[package]]
name = "z3"
version = "0.12.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4a7ff5718c079e7b813378d67a5bed32ccc2086f151d6185074a7e24f4a565e8"
dependencies = [
"log",
"z3-sys",
]
[[package]]
name = "z3-sys"
version = "0.8.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d7cf70fdbc0de3f42b404f49b0d4686a82562254ea29ff0a155eef2f5430f4b0"
dependencies = [
"bindgen",
"cmake",
]

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@ -21,6 +21,4 @@ authors.workspace = true
repository.workspace = true
[dependencies]
# so much for no dependencies this year, but I really cba so here it is
z3 = { version = "0.12.1", features = [ "static-link-z3" ] }

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@ -1,5 +0,0 @@
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

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@ -1,13 +0,0 @@
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

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@ -1,94 +0,0 @@
use z3::ast::{Ast, Int};
type Vector3 = (f64, f64, f64);
fn parse_input(input: &str) -> Vec<(Vector3, Vector3)> {
input
.lines()
.filter_map(|x| x.split_once(" @ "))
.map(|(a, b)| {
let av: Vec<_> = a.splitn(3, ", ").filter_map(|x| x.parse().ok()).collect();
let bv: Vec<_> = b.splitn(3, ", ").filter_map(|x| x.parse().ok()).collect();
((av[0], av[1], av[2]), (bv[0], bv[1], bv[2]))
})
.collect()
}
fn part_one_with_area(input: &str, min: f64, max: f64) -> u32 {
let points = parse_input(input);
let mut c = 0;
let test_area = |x: f64, y: f64| x <= max && x >= min && y <= max && y >= min;
for (i, ((x1, y1, _), (dx1, dy1, _))) in points.iter().copied().enumerate() {
for ((x2, y2, _), (dx2, dy2, _)) in points.iter().skip(i + 1).copied() {
let n2 = (x2 - x1 + (y1 - y2) * dx1 / dy1) / (dy2 * dx1 / dy1 - dx2);
let n1 = (x1 - x2 + (y2 - y1) * dx2 / dy2) / (dy1 * dx2 / dy2 - dx1);
if n1 <= 0.0 || n2 <= 0.0 {
continue;
}
let x = x1 + n1 * dx1;
let y = y1 + n1 * dy1;
if test_area(x, y) {
c += 1;
}
}
}
c
}
pub fn part_one(input: &str) -> Option<u32> {
let min = 200000000000000.0;
let max = 400000000000000.0;
Some(part_one_with_area(input, min, max))
}
pub fn part_two(input: &str) -> Option<u64> {
let points = parse_input(input);
let ctx = z3::Context::new(&z3::Config::new());
let solver = z3::Solver::new(&ctx);
let zero = Int::from_u64(&ctx, 0);
let [a, b, c, da, db, dc] = ["a", "b", "c", "da", "db", "dc"].map(|x| Int::new_const(&ctx, x));
for (i, ((x, y, z), (dx, dy, dz))) in points.iter().enumerate().take(3) {
let [x, y, z, dx, dy, dz] = [x, y, z, dx, dy, dz].map(|w| Int::from_i64(&ctx, *w as i64));
let t = Int::new_const(&ctx, format!("t_{i}").as_str());
solver.assert(&t.ge(&zero));
solver.assert(&((&x + &dx * &t)._eq(&(&a + &da * &t))));
solver.assert(&((&y + &dy * &t)._eq(&(&b + &db * &t))));
solver.assert(&((&z + &dz * &t)._eq(&(&c + &dc * &t))));
}
solver.check();
let model = solver.get_model().unwrap();
let res = model.eval(&(&a + &b + &c), true).unwrap();
res.as_u64()
}
aoc::solution!(24);
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_part_one() {
let input = aoc::template::read_file("examples", 24);
let min = 7.0;
let max = 27.0;
assert_eq!(part_one_with_area(&input, min, max), 2);
}
#[test]
fn test_part_two() {
assert_eq!(
part_two(&aoc::template::read_file("examples", 24)),
Some(47)
);
}
}

View File

@ -1,80 +0,0 @@
use std::collections::HashMap;
fn build_graph(input: &str, skips: &[(&str, &str)]) -> Vec<Vec<usize>> {
let mut nodes = Vec::new();
let mut mapper = HashMap::new();
for (node, neighs) in input.lines().filter_map(|x| x.split_once(": ")) {
if !mapper.contains_key(node) {
mapper.insert(node, nodes.len());
nodes.push(Vec::new());
}
let index_a = mapper[node];
for n in neighs.split(' ') {
if !mapper.contains_key(n) {
mapper.insert(n, nodes.len());
nodes.push(Vec::new());
}
if skips.contains(&(node, n)) || skips.contains(&(n, node)) {
continue;
}
let index_b = mapper[n];
nodes[index_a].push(index_b);
nodes[index_b].push(index_a);
}
}
nodes
}
pub fn part_one_wrapped(input: &str, skips: &[(&str, &str)]) -> Option<usize> {
let nodes = build_graph(input, skips);
let mut visited = vec![false; nodes.len()];
let mut stack = vec![0];
while let Some(node) = stack.pop() {
if visited[node] {
continue;
}
visited[node] = true;
for n in nodes[node].iter().copied() {
if !visited[n] {
stack.push(n);
}
}
}
let counter = visited.iter().copied().filter(|&x| x).count();
Some((nodes.len() - counter) * counter)
}
pub fn part_one(input: &str) -> Option<usize> {
// to figure out which nodes to skip
// echo "graph A {\n$(cat data/inputs/25.txt)\n}" | \
// sed 's/\(.*\): \(.*\)$/\1 -- {\2}/' | \
// dot -Tsvg -Kneato > graph.svg
let skips = [("sfm", "vmt"), ("vph", "mfc"), ("fql", "rmg")];
part_one_wrapped(input, &skips)
}
pub fn part_two(_input: &str) -> Option<String> {
Some("Happy chrismas!".into())
}
aoc::solution!(25);
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_part_one() {
let skips = [("pzl", "hfx"), ("bvb", "cmg"), ("nvd", "jqt")];
let input = aoc::template::read_file("examples", 25);
assert_eq!(part_one_wrapped(&input, &skips), Some(54));
}
}