2023.3

4 files changed, 483 insertions, 0 deletions

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....$..........*......../.....187..-..................
+..346...*.....475.440....903&..996*...404+.395...*..............*.......&253.223.....................453..535......@....265.....290$........
+.........470.*.....+..........................*.........148...40....361...................883.............*....%............649.............
+.............587..........#..........848*.............../.........................................415....445....947............*...509......
+......170..............922..79*660.......87...802...........................669.152...867...........*.........................926....+.53...
+.......-..#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*......$..........&...*............70-........&.........*....397....571.....297.............*.....422..
+......338..481........../..#220...............116.........194..................#.....=....-..529..=........................../....381.......
+.892....*....../...708.856.......405.............*324................&...922....60..288..810.........747............*876./....180...........
+....*..41......456........................652..................48..110..+.....................199.....*..........824......471........261....
+..317......+1........29...316&...368&............%.365...212....*..............................*..292..70..............................*....
+.......................................*......616..-.....*....596........*699.978*259....309..660....*...........90....634.....631......987.
+140........2*....285...836&..........13.8.............264.............945...............*............323....514.&.........-......%..........
+......&......634..*..........816...........................41..=..............@670......648................+.............................926
+......343.........221....157....*.......=..492.319..............659......238.........................-.......113.......187...863............
+........................*......937....471........*...274..................*....../244......22..332...908.......*..........#..*..............
+.......610.............670.693..................182...*..618.............865................................678........85.....948...........
+.........*...334.............../.....21*853.........491..../...524...............494........794.....401.........$........*327...............
+........270.../................164.......................#....=..............235...*....-..*.......*.............142..............738*......
+...579.............@...823...............596........+263.797.....916..............632..618..335.996......504*..................+......853...
+....&...646*.872...805....*...-788.......*.........................*.......985*..............................440.......310..826.....+.......
+..............*.........54..........104...238.........787...........79.........449.674........204......................*...........808......
+...949....396..................664....$.........626..*...............................*.......*....923..30....482........111.............+...
+...$......*...................../.............*......387.........333...-........@.750.......737.........*.....*.............890..707.....852
+.........264....247.....416+..................177...........55..........251..911.........................88...741.................@.........
+................*..............-........................232..*.....737...............597..............................=.+...............24..
+.................456............109..907................../...656.......................*..................855.451.958..783.........854*....
+.....65*....#188.......894............................@.....&................380.302.133..507.................*..............227............
+..71....14..................774..%109..821...182*......85...256......314.......%..........-....148..$.824*591......653........*......&435...
+.........................$./.............@...........................=............228..............32.........*........%989..121............
+.......................64.......545.........*458......735....435...........869.......+...........=.........307.......................*......
+74...209../885..................*....&368.86.........*..........*....965.....................919..226................990..........381.566...
+........#..........970.150....910.=..............973.502....$.603..#..*....429..557...#................665.......307........................
+...-.........486..........=.......514.............*......621......59.654......*...*....756...584.....%....*453...*....250...328...995.......
+....997.........*.......................316......533........................100..485.........*.......955........792..........*.......*......
+.........420....111..........273.430.......*889..........824..338..91.55.............656....70...............................936...713......
+......#....*........647......*...../.484.......................*..*......#376..........................425.613..............................
+...568....151....$.......95.............*...66.....818..453.735..817.319......568*764...........242.....+.............829.1.................
+..............216....345......................*.....*.................*...549............251.......*.........*44.......*...*352......597*7..
+.....138..240......$...*.............34..197.988.....760..981....*....682....*...263/...*.........19......678.......$..839.......70.........
+........*...*....270.........147.700.......*...............+..470.849.......625.........218..$.....................936..........*....@......
+.......953..856.................*.........910........504.........................&..........830........874..................514.772..698....
+814...................460...........................$............&49......804..394......................*...............747...*.............
+........876...........@...............607......15........8...................$.........706..............767...972.......*...912....%........
+.............805...83..............*......156..............924...719...............514*...........................936...........960..364....
+...692........*....#......220...667.645....*........................=...977..628........415...................@....*..386....#.........*....
+.............................$.............891.948..479...................-...*..........*...*385......*...173....113./...765..779......643.
+..........$754......8............599...........*............373.............814....537.307..........552.........................*...........
+......................*111..874..&...887....820.........73..*..........196.....................260.......%......915.774.........../.........
+..........670*484.624..........$.......................%.....17........*.......91@..703*705...............298......*............160.........
+.....256...............&..................833.....@......319....&310.778........................214...................195..............7....
+......*......-.......229.................*........23.........82.............604..428.....258&..*.................303..*......198............
+....554...262...621*...........959....475..28............836.*...11*68...........#............602..73.....+471..*....161.61.*...........652.
+...............................*..........................$..324.........&.........-.....950........*..........921.......*...551...799$.$...
+..............=306..19/.397*....127.......*..........794..........461....997........429.#.........923.......................................
+..950.....225...............667........743.560.........*....678....*..................................240.............*.....................
+...........*......................&727..................229...*...20............508@...464........312.....399..945...430....................
+............239......*453.....................................908.........339.........*........................*............394@............
+.606..647......................544.....*765.............908/...............*....318...393................481.445..................714.......
+...*.../......859......362....../...352...........736.........970.......138....................%....850............529........#......*561...
+..841.............*.......$................225...=....*470..................280....109......441........*785....281*........576..@929........
+...........146..34.965......272...............*....418......-....=918..862.*......*...................................#365..................
+.821*388......*.....................781......778...........839...........*..779.........635..#....243..+............*.............*493...147
+...............991....463...211*......$...........291...............+.............970...*....153..*....81..........614...720....63..........
+...........714..................127......81......&.................307.............-.....948.....565......907...........*...................
+...........................-..............#...#...........................&..........145.....................*365..590..711....830....511...
+..........136..-...810....9....................178...........*440....696...792..............260........18......................*............
+......364....*.193...+..........5*.....390+..........580..630...........*..............324./....463....*........................846......915
+.........*..............868.......593.......384......../....................201........*..............343..852......96......................
+......303..64.............................................493.........694............833....758........................266......531.........
+.............*823..................................461............295..........100$.......%...=.884..433....929.......&.........$...........
+521..........................&.................120.........................../..........996.....*.......&....*...971.................-......
+.......@..227...............440..308.../................152.......#.........82.660.%265......599.............646..*...505....547$.....983...
+.....157................................22.......=.......%...&.....12....................................428.....641........................
+...........398.....381.../...248................492........631.....................128...../...577.......$............792...................
+..........+...............28.........41.....386......15............*937......660...*....915.......*.594.................$.......964.........
+..............216.............351&...*........*.....*........$..449...............328..........270...#.........900.........930.*.....941....
+..552.224.402*......895.............302.462....248...374...142................535..........................884....%..71....$...997...*...589
+.....*.....................270...-........=.-..........................760..........151..508..........21.....*......+.......................
+........341..%898.......$......612...........103..............895....*.*.........@.....-.....99........*..939.....*.........................
+........*............295.............591.................458.+.....374..70........284................283.........340..89......820......932..
+......284.......826........+838........*........*.........$...................................89........................&.....=.......*.....
+..........818..........................741...175.495................489.........................*.........469..565..%...........613.32......
+788.982...*.........468..............................952....73...............588...336........+...498*805....*...*...332.........*..........
+....../.884...%.127....&..980...#.........214...............+.................*....*.......336...............812..43.......475..908.........
+............294..............-.681......=......1........647.............180..895..760....%................91...............*.........674....
+...24..#.................739.............657..=....149.....*..296.737..*..............553...............*...*473........474...%.............
+.......694.......*..%....*.........*..................-.117....*.....*..............................953.793....................653.....635..
+..............519....963..640......718......................*...693.83.............................$.................................-..#...
+.......................................463...........*39..867...........200..................766.........893........262.89.777-.....476.....
+......................@790........................983...................*.....................*.............*906...../..*.........%.........
+.../.......417..619...................................................944...973.....#......664.........203...............504.824...626.149..
+...316...............847...........%....................382...1................*.825..223.............@.........+............*.........*....
+...............816....*.....744..771.628..............*....*..*..............433......*..........................303......569..725......221.
+.....&543........*.774.......*.....................461..357..131...583..892$.........627...978..630...#653........................#.........
+352............540............509.504*......109......................*.......................+.-...............431..486..250....%...........
+...+.......774.....343........................*.......&............859.....499......................./................*......448....425.....
+..............*857.$........26....+.....$..705..491.128......871............#..659....................119.....%80.770.25....................
+......66....................*..453....497.........-.......*.....*................@.....833..........................................-.......
+.....*........196........535........................./.233.230.238.....................*...#.56*...........757.......620..........$..694....
+...226.122....*.....116...............78$.........652.....................+589......260..633....97....153...............*..$...142.......464
+........@......493..........883...862.................199......................100......................%.............445...25.....*........
+...........372.........388...*...%.......13*506......%...../855...-456.........+................373........@....976.............243.965.....
+.....234..*........200...&.659...........................-...............353......451..........*..........997....*..........................
+........*..........*...........205..................#...346.................@....-.......890..455.....819.....673..733*473..................
+..........970...132...$....509*..........#.......437..........290..../489...........59.................*........................961.........
+..972.192.@.........152.@.......$...876...993.............449....&.............335.*.....184.........723.......................+.......+....
+...............899......470.82..908..............10.......+...........375......#....635...*................*538.....$..228..%...........587.
+...751........................-......................996....351........*..422...........246.......#393..168.......576...*...652...784.......
+....................997.................49.............*...*....118......*.....998..$..........2............#....................*..........
+.........-749..612..*.............140..$.......659.....750..965....*...187.....*...973..............859..908......951.....104.....749...+...
+.302...............257...........................*...............851...........444..........58*119...*........162....@......*............431
+....*........260*........324................262...147.......+..............245........................604.47...............333..../.........
+.................926........*248...............*..........660................*......438=..250.................622................103....543.
+............@223............................933.........................605..285............*..................*.....622...............#....
+....&...873.............6..530.......251.........17..529...................*.................945...905.........505...*.....181..............
+.....60....*........94..&...&..........#........+....../....746*768........849.......985*445.............*...........201..$....307...-......
+..........838.365..$.............595+..............-............................256..............533......84..................%.......564...
+.....855........*.....%...............854.........20..739..........+............................................992.........................
+.981..*..........75..147.390..................842....../..997......145.......593..............#...........769../........88..............323.
+...*..911.................*..997.........................*................15*.......642....327........148*................*268..........@...
+..127.........................@...........856........284.753..469.....+.......611=.....&.........................63....&........@346........
+......758..............670...............*.....431..............*.460..988..=...................................*.....538..............#697.
+.........................*.......311.=37.........*............524...*.......315..316..902.....864*.....%529.....392.......859..156@.........
+.....$..............610......478.#..............335................337.................-..........828........................#......530.191.
+.892.914......................%..........................283....................208........626.........&.40.....443..626.$.............*....
+...*.....................963....645*........694*.................539.....317..................%......555............*.....450......+........
+..412..422..373%...713$..%......................778.159.........*...........#.......978...................+......647..........$..885....&...
+...............................58...........383.....%..........185...376...........+.....158.........%.....398.............203.........784..
+......360...914*875.104&........&.673....-.....*.*....................*...................*.....590.417.60.......................*..........
+.......*.................................386.592..445...............74...........&........864.............$.370.....75........125.102...292.
+........950.522..422&.204%......918.........................228................918............../..............-...*...951..................
+.....@.........*..................................................228..840$.....................584......72..#....563...$..717..113.........
+..250...........817.........#........614...224...164...506......................362....873...........568*....920...............*............
+......159.................553..294#...*.........*......................42..$...........*......884.......................950...482..611...249
+........*....978*275.................974...*....81.........../...........%.405.........224.....-....*......409*20....../............*...*...
+.122.273...............759....137...........574............229...................................497.41............................872.78...
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..
+.......
+.......
+
+.......
+ ......
+..020..
+.......
+.......
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}");
+}