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authoralyx <alyx@aleteoryx.me>2023-12-03 02:43:18 -0500
committeralyx <alyx@aleteoryx.me>2023-12-03 02:43:18 -0500
commit21880ee880d321e760b6b560db0696c8af4c98d9 (patch)
treee667793283963370efe40f16adfbec82847f0b8e /2023/rs
parentcbea8d91895cd042df62a380bc672422e3837f42 (diff)
downloadadventofcode-21880ee880d321e760b6b560db0696c8af4c98d9.tar.gz
adventofcode-21880ee880d321e760b6b560db0696c8af4c98d9.tar.bz2
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2023.3
Diffstat (limited to '2023/rs')
-rw-r--r--2023/rs/Cargo.lock4
-rw-r--r--2023/rs/code/three/Cargo.toml8
-rw-r--r--2023/rs/code/three/src/input.txt140
-rw-r--r--2023/rs/code/three/src/input2.txt239
-rw-r--r--2023/rs/code/three/src/main.rs96
5 files changed, 487 insertions, 0 deletions
diff --git a/2023/rs/Cargo.lock b/2023/rs/Cargo.lock
index 9999ada..34c0c94 100644
--- a/2023/rs/Cargo.lock
+++ b/2023/rs/Cargo.lock
@@ -29,6 +29,10 @@ name = "one"
version = "0.1.0"
[[package]]
+name = "three"
+version = "0.1.0"
+
+[[package]]
name = "two"
version = "0.1.0"
dependencies = [
diff --git a/2023/rs/code/three/Cargo.toml b/2023/rs/code/three/Cargo.toml
new file mode 100644
index 0000000..6c6d234
--- /dev/null
+++ b/2023/rs/code/three/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "three"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/2023/rs/code/three/src/input.txt b/2023/rs/code/three/src/input.txt
new file mode 100644
index 0000000..1125e9b
--- /dev/null
+++ b/2023/rs/code/three/src/input.txt
@@ -0,0 +1,140 @@
+............677..........................................................................227.....730..35.......318...........92...166.......
+....%..863..#......................36.............956..337%......692..............*744....$..........*......../.....187..-..................
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+.........470.*.....+..........................*.........148...40....361...................883.............*....%............649.............
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+.......-..#319..915................846......../......120...870*874..610.........$....-.......577.....825.....430$.....689...................
+......................700.........*................................*..................../.........................693.*....734&......@.59...
+..........247..........*.......444....768....569.248..430..565.....82............525...794...171...................*..160........39.25.*....
+..........*.........560............56*......$..........&...*............70-........&.........*....397....571.....297.............*.....422..
+......338..481........../..#220...............116.........194..................#.....=....-..529..=........................../....381.......
+.892....*....../...708.856.......405.............*324................&...922....60..288..810.........747............*876./....180...........
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diff --git a/2023/rs/code/three/src/input2.txt b/2023/rs/code/three/src/input2.txt
new file mode 100644
index 0000000..c870508
--- /dev/null
+++ b/2023/rs/code/three/src/input2.txt
@@ -0,0 +1,239 @@
+ ....
+.101.
+.....
+
+. ...
+.102.
+.....
+
+.. ..
+.103.
+.....
+
+... .
+.104.
+.....
+
+....
+.105.
+.....
+
+.....
+.106
+.....
+
+.....
+.107.
+....
+
+.....
+.108.
+... .
+
+.....
+.109.
+.. ..
+
+.....
+.110.
+. ...
+
+.....
+.111.
+ ....
+
+.....
+ 112.
+.....
+
+ ...
+201.
+....
+
+. ..
+202.
+....
+
+.. .
+203.
+....
+
+...
+204.
+....
+
+....
+205
+....
+
+....
+206.
+...
+
+....
+207.
+.. .
+
+....
+208.
+. ..
+
+....
+209.
+ ...
+
+ ...
+.301
+....
+
+. ..
+.302
+....
+
+.. .
+.303
+....
+
+...
+.304
+....
+
+....
+.305
+...
+
+....
+.306
+.. .
+
+....
+.307
+. ..
+
+....
+.308
+ ...
+
+....
+ 309
+....
+
+ ......
+.......
+..001..
+.......
+.......
+
+. .....
+.......
+..002..
+.......
+.......
+
+.. ....
+.......
+..003..
+.......
+.......
+
+... ...
+.......
+..004..
+.......
+.......
+
+.... ..
+.......
+..005..
+.......
+.......
+
+..... .
+.......
+..006..
+.......
+.......
+
+......
+.......
+..007..
+.......
+.......
+
+.......
+......
+..008..
+.......
+.......
+
+.......
+.......
+..009.
+.......
+.......
+
+.......
+.......
+..010..
+......
+.......
+
+.......
+.......
+..011..
+.......
+......
+
+.......
+.......
+..012..
+.......
+..... .
+
+.......
+.......
+..013..
+.......
+.... ..
+
+.......
+.......
+..014..
+.......
+... ...
+
+.......
+.......
+..015..
+.......
+.. ....
+
+.......
+.......
+..016..
+.......
+. .....
+
+.......
+.......
+..017..
+.......
+ ......
+
+.......
+.......
+..018..
+ ......
+.......
+
+.......
+.......
+ .019..
+.......
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+.......
+ ......
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+.......
diff --git a/2023/rs/code/three/src/main.rs b/2023/rs/code/three/src/main.rs
new file mode 100644
index 0000000..c72abe9
--- /dev/null
+++ b/2023/rs/code/three/src/main.rs
@@ -0,0 +1,96 @@
+#![feature(iter_map_windows)]
+
+use std::collections::BTreeSet;
+
+static INPUT: &[u8] = include_bytes!("input.txt");
+
+#[derive(Copy, Clone, Debug)]
+enum LineMaskEntry {
+ Empty,
+ Gear,
+ Number{tag: u32, num: u32}
+}
+
+fn main() {
+ let valueified = INPUT.split(|b| *b == b'\n').filter(|s| !s.is_empty());
+
+ let mut num = 0;
+
+ let (parts_number_sum, gears_mask) = [valueified.clone().next().unwrap()].into_iter().chain(valueified.clone()).chain([valueified.clone().last().unwrap()])
+ .map_windows::<_, _, 3>(|[prev, curr, next]| {
+ let mut numlen = 0;
+ let mut numval = 0;
+
+ let mut acc = 0;
+ let mut linemask = vec![LineMaskEntry::Empty; curr.len()];
+
+ for i in 0..curr.len() {
+ if curr[i] == b'*' { linemask[i] = LineMaskEntry::Gear; }
+
+ if !curr[i].is_ascii_digit() && numlen != 0 {
+ let start = if i - numlen == 0 { i - numlen } else { i - numlen - 1 };
+ let end = i;
+ let window = || start..=end;
+ if prev[window()].into_iter().chain(&curr[window()]).chain(&next[window()]).any(|b| !b.is_ascii_digit() && *b != b'.') {
+ acc += numval;
+
+ linemask[i - numlen .. i].fill(LineMaskEntry::Number{ tag: num, num: numval });
+ num += 1;
+ }
+
+ numlen = 0;
+ numval = 0;
+ }
+ else if curr[i].is_ascii_digit() {
+ numlen += 1;
+ numval *= 10;
+ numval += (curr[i] - b'0') as u32;
+ }
+ }
+
+ if numlen != 0 {
+ let window = || curr.len() - numlen - 1..curr.len();
+ if prev[window()].into_iter().chain(&curr[window()]).chain(&next[window()]).any(|b| !b.is_ascii_digit() && *b != b'.') {
+ acc += numval;
+
+ linemask[curr.len() - numlen .. curr.len()].fill(LineMaskEntry::Number{ tag: num, num: numval });
+ num += 1;
+ }
+ }
+ (acc, linemask)
+ }).fold((0, Vec::new()), |(n, mut v), (a, l)| (n + a, {v.push(l); v}));
+ println!("Sum of valid part numbers: {parts_number_sum}");
+
+
+ let first = vec![LineMaskEntry::Empty; gears_mask[0].len()];
+ let last = first.clone();
+ let gear_ratio_sum = [first].into_iter().chain(gears_mask).chain([last])
+ .map_windows::<_, _, 3>(|[prev, curr, next]| {
+ let mut acc = 0;
+
+ for i in 0..curr.len() {
+ match curr[i] {
+ LineMaskEntry::Gear => {
+ let mut set = BTreeSet::new();
+ for row in [prev, curr, next] {
+ for n in [i - 1, i, i + 1] {
+ if n == 0 || n == row.len() { continue; }
+ if let LineMaskEntry::Number{tag, num} = row[n] {
+ set.insert((tag, num));
+ }
+ }
+ }
+ if set.len() == 2 {
+ let mut iter = set.into_iter();
+ let x = iter.next().unwrap().1;
+ let y = iter.next().unwrap().1;
+ acc += x * y
+ }
+ },
+ _ => ()
+ }
+ }
+ acc
+ }).sum::<u32>();
+ println!("Gear ratio sum: {gear_ratio_sum}");
+}