-186

day10/Cargo.lock

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-7

day10/Cargo.toml

··· 1 1 - [package] 2 2 - name = "day10" 3 3 - version = "0.1.0" 4 4 - edition = "2024" 5 5 - 6 6 - [dependencies] 7 7 - clap = { version = "4.5.53", features = ["derive"] }

-3

day10/smallinput.txt

··· 1 1 - [.##.] (3) (1,3) (2) (2,3) (0,2) (0,1) {3,5,4,7} 2 2 - [...#.] (0,2,3,4) (2,3) (0,4) (0,1,2) (1,2,3,4) {7,5,12,7,2} 3 3 - [.###.#] (0,1,2,3,4) (0,3,4) (0,1,2,4,5) (1,2) {10,11,11,5,10,5}

-36

day10/src/button.rs

··· 1 1 - use crate::switchboard::SwitchBoard; 2 2 - use std::str::FromStr; 3 3 - 4 4 - #[derive(Debug, Eq, PartialEq, Clone)] 5 5 - pub struct Button { 6 6 - pub targets: Vec<usize>, 7 7 - } 8 8 - 9 9 - impl Button { 10 10 - pub fn new(targets: Vec<usize>) -> Self { 11 11 - Button { targets } 12 12 - } 13 13 - 14 14 - pub fn press(&self, switchboard: &mut SwitchBoard) { 15 15 - for &target in &self.targets { 16 16 - switchboard.toggle(target); 17 17 - } 18 18 - } 19 19 - 20 20 - pub fn toggles(&self, index: usize) -> bool { 21 21 - self.targets.contains(&index) 22 22 - } 23 23 - } 24 24 - 25 25 - impl FromStr for Button { 26 26 - type Err = String; 27 27 - 28 28 - fn from_str(s: &str) -> Result<Self, Self::Err> { 29 29 - //remove parens 30 30 - let targets = s[1..s.len() - 1] 31 31 - .split(',') 32 32 - .map(|t| t.parse().map_err(|_| "Invalid target".to_string())) 33 33 - .collect::<Result<Vec<usize>, _>>()?; 34 34 - Ok(Button::new(targets)) 35 35 - } 36 36 - }

-116

day10/src/main.rs

··· 1 1 - use button::Button; 2 2 - use clap::Parser; 3 3 - use switchboard::SwitchBoard; 4 4 - 5 5 - mod button; 6 6 - mod switchboard; 7 7 - 8 8 - #[derive(Parser)] 9 9 - struct Args { 10 10 - #[clap(short, long)] 11 11 - file: String, 12 12 - #[clap(short, long)] 13 13 - debug: bool, 14 14 - } 15 15 - 16 16 - fn mash_buttons(switchboard: &mut SwitchBoard, buttons: &[Button]) -> usize { 17 17 - let mut total_presses = 0; 18 18 - while !switchboard.is_solved() { 19 19 - if total_presses > 100 { 20 20 - println!("Max presses reached"); 21 21 - break; 22 22 - } 23 23 - for i in 0..switchboard.size { 24 24 - if !switchboard.is_correct(i) { 25 25 - // println!("Lightbulb {} is incorrect", i); 26 26 - let mut valid_buttons = buttons 27 27 - .iter() 28 28 - .filter(|b| b.toggles(i)) 29 29 - .collect::<Vec<&Button>>(); 30 30 - valid_buttons.sort_by(|a, b| a.targets.len().cmp(&b.targets.len())); 31 31 - let distance = switchboard.dist_from_solution(); 32 32 - println!( 33 33 - "Current button options: {:?}, distance: {}", 34 34 - valid_buttons, distance 35 35 - ); 36 36 - for btn in valid_buttons.iter() { 37 37 - btn.press(switchboard); 38 38 - total_presses += 1; 39 39 - if switchboard.dist_from_solution() < distance { 40 40 - println!("Toggled button {:?}", btn); 41 41 - println!("Switchboard: {}", switchboard); 42 42 - break; 43 43 - } else { 44 44 - btn.press(switchboard); 45 45 - } 46 46 - } 47 47 - } 48 48 - } 49 49 - } 50 50 - 51 51 - total_presses 52 52 - } 53 53 - 54 54 - fn solve_switches(switchboard: &mut SwitchBoard, buttons: &[Button]) -> usize { 55 55 - let mut opstack: Vec<Button> = Vec::new(); 56 56 - 57 57 - while !switchboard.is_solved() { 58 58 - if opstack.len() > 10 { 59 59 - println!("Failed in loop, {:?}", opstack); 60 60 - panic!("Too many operations"); 61 61 - } 62 62 - println!("Switchboard: {}", switchboard); 63 63 - println!("Current state: {:?}", opstack); 64 64 - // find first switch that is incorrect 65 65 - let first_wrong = switchboard.first_wrong(); 66 66 - // if we find a wrong switch, get its index 67 67 - if let Some(index) = first_wrong { 68 68 - // find all buttons that toggle this index 69 69 - let mut valid_buttons = buttons 70 70 - .iter() 71 71 - .filter(|b| b.toggles(index)) 72 72 - .collect::<Vec<&Button>>(); 73 73 - // don't press the same button twice in a row 74 74 - valid_buttons.retain(|b| !opstack.contains(b)); 75 75 - if !valid_buttons.is_empty() { 76 76 - opstack.push(valid_buttons[0].clone()); 77 77 - valid_buttons[0].press(switchboard); 78 78 - } else { 79 79 - let first_button = opstack[1].clone(); 80 80 - opstack.clear(); 81 81 - switchboard.reset(); 82 82 - println!( 83 83 - "Reset switchboard, first operation will be {:?}", 84 84 - first_button 85 85 - ); 86 86 - 87 87 - first_button.press(switchboard); 88 88 - opstack.push(first_button.clone()); 89 89 - } 90 90 - } 91 91 - } 92 92 - opstack.len() 93 93 - } 94 94 - 95 95 - fn main() { 96 96 - let args = Args::parse(); 97 97 - let file = std::fs::read_to_string(&args.file).expect("Failed to read file"); 98 98 - let lines = file.lines(); 99 99 - 100 100 - for line in lines { 101 101 - let tokens = line.split_whitespace().collect::<Vec<&str>>(); 102 102 - let mut switchboard = SwitchBoard::new(tokens[0]); 103 103 - let mut buttons = Vec::new(); 104 104 - 105 105 - for button_str in tokens[1..tokens.len() - 1].iter() { 106 106 - let button: Button = button_str 107 107 - .parse() 108 108 - .expect("Button expected to be in format (a,b,..,z)."); 109 109 - buttons.push(button); 110 110 - } 111 111 - 112 112 - solve_switches(&mut switchboard, &buttons); 113 113 - } 114 114 - 115 115 - println!("{}", file); 116 116 - }

-75

day10/src/switchboard.rs

··· 1 1 - use std::fmt::{Display, Formatter}; 2 2 - 3 3 - pub struct SwitchBoard { 4 4 - lights: Vec<bool>, 5 5 - target: Vec<bool>, 6 6 - pub size: usize, 7 7 - } 8 8 - 9 9 - impl SwitchBoard { 10 10 - pub fn new_empty(size: usize) -> Self { 11 11 - SwitchBoard { 12 12 - lights: vec![false; size], 13 13 - target: vec![false; size], 14 14 - size, 15 15 - } 16 16 - } 17 17 - 18 18 - pub fn new(schema: &str) -> Self { 19 19 - if schema.starts_with('[') && schema.ends_with(']') { 20 20 - let size = schema.len() - 2; 21 21 - let lights = vec![false; size]; 22 22 - let target: Vec<bool> = schema[0..size].chars().map(|c| c == '#').collect(); 23 23 - assert_eq!(lights.len(), target.len()); 24 24 - SwitchBoard { 25 25 - lights, 26 26 - target, 27 27 - size, 28 28 - } 29 29 - } else { 30 30 - panic!("Invalid schema for switchboard"); 31 31 - } 32 32 - } 33 33 - 34 34 - pub fn reset(&mut self) { 35 35 - self.lights = vec![false; self.size]; 36 36 - } 37 37 - 38 38 - pub fn is_correct(&self, index: usize) -> bool { 39 39 - self.lights[index] == self.target[index] 40 40 - } 41 41 - 42 42 - pub fn is_solved(&self) -> bool { 43 43 - self.lights == self.target 44 44 - } 45 45 - 46 46 - pub fn toggle(&mut self, i: usize) { 47 47 - self.lights[i] = !self.lights[i]; 48 48 - } 49 49 - 50 50 - pub fn dist_from_solution(&self) -> usize { 51 51 - self.lights 52 52 - .iter() 53 53 - .zip(self.target.iter()) 54 54 - .filter(|&(a, b)| a != b) 55 55 - .count() 56 56 - } 57 57 - 58 58 - pub fn first_wrong(&self) -> Option<usize> { 59 59 - self.lights 60 60 - .iter() 61 61 - .zip(self.target.iter()) 62 62 - .enumerate() 63 63 - .position(|(_, (a, b))| a != b) 64 64 - } 65 65 - } 66 66 - 67 67 - impl Display for SwitchBoard { 68 68 - fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result { 69 69 - for light in self.lights.iter() { 70 70 - write!(f, "{}", if *light { '#' } else { '.' })?; 71 71 - } 72 72 - writeln!(f)?; 73 73 - Ok(()) 74 74 - } 75 75 - }

-186

day11/Cargo.lock

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-7

day11/Cargo.toml

··· 1 1 - [package] 2 2 - name = "day11" 3 3 - version = "0.1.0" 4 4 - edition = "2024" 5 5 - 6 6 - [dependencies] 7 7 - clap = { version = "4.5.53", features = ["derive"] }

-553

day11/input.txt

··· 1 1 - you: wms hkw ove qba ats 2 2 - imt: swz aev ams bhg yir 3 3 - grh: fph cuq pcx 4 4 - yae: qiu mef 5 5 - luf: zir jdx jmg 6 6 - ypt: ahf wov hai 7 7 - rlf: haj yxm 8 8 - xls: qnw ppg 9 9 - ggr: xmh vka 10 10 - xgr: hlc mzm 11 11 - mze: ljj ppg ysn qnw 12 12 - xfb: diw cxx vlb mgf 13 13 - wms: xcd hni 14 14 - lpm: dap 15 15 - wov: rbx skx ztu 16 16 - oop: djs rfy 17 17 - cnb: haj 18 18 - xaz: tur kmd wsw 19 19 - svr: qnf jjf xjh omn 20 20 - vya: mgq qqj asn 21 21 - zuk: xvf lff cju 22 22 - gvw: xfk jje gir 23 23 - ztu: hlr lka 24 24 - jmg: dap tei 25 25 - hxf: mjd vns mlo 26 26 - dsq: vkw vtp cwm 27 27 - jpr: izt esf 28 28 - qba: cju xvf lff fcg 29 29 - zyt: yek imd qsl 30 30 - wke: out 31 31 - hbz: nnz qck 32 32 - xru: wuh 33 33 - wsw: mgq 34 34 - ifh: ejn pif 35 35 - xpt: ouy 36 36 - elr: izi wke ljd oim 37 37 - bbg: xnn ove hbz gkv fdo frn vfi uxl rrt wms dcs vkn 38 38 - bye: jna xgr vcd 39 39 - ceb: cwa 40 40 - msa: hly gir 41 41 - gzq: byz 42 42 - ufd: ihs ped 43 43 - jev: wbn 44 44 - gix: wdt 45 45 - see: nfq 46 46 - rnu: nei wdt azn 47 47 - axr: oop pgu 48 48 - efu: aai ejn 49 49 - cnf: oaw ryk wpb 50 50 - vzq: lka hlr zkr aps 51 51 - ehj: out 52 52 - xup: esf 53 53 - tak: wld xob 54 54 - omn: xfb fry tvg fll pwt oka vwe rpp bja miw boq elm 55 55 - kmj: bsl xzx tco 56 56 - hpe: une tvs 57 57 - xzx: bbg gia fwk you 58 58 - qiu: bdv nkt uco 59 59 - sar: boc tfa qvo vzq 60 60 - wur: pdz wld xob 61 61 - zvs: bbg 62 62 - bez: kow tvs hju une 63 63 - esf: out 64 64 - taz: nft 65 65 - fgw: mzm hlc 66 66 - wqf: mka gko 67 67 - zab: wuh xzx 68 68 - ars: mjn jmd 69 69 - pmn: uug vzx 70 70 - lay: you bbg fwk 71 71 - imd: see 72 72 - rak: out 73 73 - ixj: kow tvs une 74 74 - pka: txb 75 75 - wrm: sjq kme 76 76 - bik: aps 77 77 - slz: tvs kow une 78 78 - wxx: nfe 79 79 - hju: ypt xls swg wci wth 80 80 - dcs: qvu 81 81 - yuo: xhd ryk 82 82 - ucg: lpm zaw zir 83 83 - vtp: out 84 84 - znh: vya phe wsw kmd 85 85 - slu: ulf msa gvw amb nkv 86 86 - qeh: yor 87 87 - ing: cji hlb 88 88 - ogh: gfk haj yxm 89 89 - mlo: ptn mmq alf nft 90 90 - nhx: skx 91 91 - wrf: jkp fhl 92 92 - ihw: cwa rlf xbu 93 93 - yut: hjx xmm 94 94 - drp: vkw vqp vtp 95 95 - ywc: com wxx ize 96 96 - bsl: fwk gia zvu bbg 97 97 - uhu: foi wrm qnt 98 98 - mcp: vqp cwm 99 99 - lce: nak uzi 100 100 - vax: auy fgw cwr 101 101 - fdo: qck lvi nnz 102 102 - lmn: han obk fuu 103 103 - ebx: nko kdd boe vht 104 104 - cdt: qiu 105 105 - oka: uug lkh 106 106 - zny: sef dxs fac elg 107 107 - bxj: gcd huk 108 108 - azn: tth aps 109 109 - aps: ufd ogt bxj jaf zpc ptb jev 110 110 - pvr: mjd vns 111 111 - kxq: vns 112 112 - fry: uug 113 113 - tth: hxe jev zpc bio yba enr mbw ujb bxj ogt ryr dkw slu 114 114 - ize: nfe hlc 115 115 - vfi: lvi qck 116 116 - qtx: xup ouy 117 117 - qck: piz ohg 118 118 - lft: ogh kgv 119 119 - iur: dlh lcc 120 120 - dqs: aps zkr hlr 121 121 - xci: ahf bhk hai 122 122 - ayn: tth hlr lka 123 123 - frn: lff 124 124 - fhh: lka tth zkr aps 125 125 - jkp: fnj vbv 126 126 - fka: fnj vbv 127 127 - lcc: hju tvs 128 128 - yrq: wrm 129 129 - zaw: dap 130 130 - ggb: pew lgw 131 131 - vkw: out 132 132 - nmm: ona ums vha xos 133 133 - kak: out 134 134 - ejn: ixj kyx 135 135 - yba: ftb 136 136 - hlb: vht 137 137 - lka: ryr zrk ufd slu lfc ptb bio zpc cqz hxe mbw jaf dkw cxk jzg smv jev ogt bxj ujb enr yba 138 138 - gfk: fmh znh aso qdl jdy qeh kot 139 139 - arh: fft eae 140 140 - gtw: tth lka 141 141 - imk: pdz wld xob 142 142 - mox: irm 143 143 - fuu: ftn 144 144 - nfe: cwe ndx etc qhv agt vzk dcm cmu oiu fwb ahr zgd mgz wyd byh ajh lkw fob rho sve sfj lce riq znt yut ogu 145 145 - bdv: you fwk zvu bbg 146 146 - asn: hju une 147 147 - yas: pif ejn 148 148 - cyr: fwa qpu mpw 149 149 - wdt: lka 150 150 - mef: bdv 151 151 - ihs: gua 152 152 - box: out 153 153 - sqj: ehj 154 154 - olv: dlh lcc rpb 155 155 - hsh: rnu gix nfq dus 156 156 - ifc: xup jpr 157 157 - nko: you zvu fwk gia 158 158 - oim: out 159 159 - fwk: ove dcs hbz gkv cnt frn vzo brh rrt 160 160 - djs: uco bdv nkt 161 161 - pew: dsq sjy epu 162 162 - vka: tvs kow hju 163 163 - mbw: amb ulf msa gvw 164 164 - mgz: zab xru pui kmj 165 165 - lvp: zny mgf 166 166 - bxp: hlc mzm 167 167 - lgw: epu mcp sjy drp 168 168 - mbu: out 169 169 - jdx: dap tei 170 170 - boq: lft 171 171 - ltz: sjy mcp dsq 172 172 - com: nfe 173 173 - fll: pqr luf gko 174 174 - obk: frk ftn 175 175 - vht: zvu gia fwk 176 176 - zyh: lgw mfj pew ltz 177 177 - hni: xym ggb bkg 178 178 - vsy: cdt dac yae 179 179 - kfc: gou fpc 180 180 - mka: zaw lpm jmg 181 181 - uoh: fwa qpu 182 182 - byu: rak mck 183 183 - pwf: rcr 184 184 - rxh: qtx 185 185 - zxf: tco wuh 186 186 - lvi: ohg kft dqx 187 187 - mfj: drp 188 188 - one: lka 189 189 - qsj: pif 190 190 - gko: jmg lpm jdx zaw zir 191 191 - boe: zvu bbg gia fwk 192 192 - pum: aps lka tth 193 193 - tvs: wci wji zyt dhn hwr vwl wrf ojn rab 194 194 - irl: gip 195 195 - bqb: kjs qmn lft 196 196 - qsl: see hsh 197 197 - kyx: hju 198 198 - the: yrq zco xcb uhu kbq 199 199 - fob: gzq uzi osb 200 200 - nfq: nei wdt azn 201 201 - ams: afp 202 202 - cwr: mzm 203 203 - gia: xnn brh hkw hbz irl dcs zuk cnt gkv gbv 204 204 - fmh: rxs xpf 205 205 - ndx: hou uoh qdj vwt 206 206 - fpc: hlc nfe 207 207 - ysn: wjd zuj pum 208 208 - cwa: yxm haj gfk 209 209 - lfq: kak ujn ehj box 210 210 - wth: imd 211 211 - hjx: hlb ebx cji aak 212 212 - vkn: hxf wax kxq 213 213 - afp: dkm lyf 214 214 - zgd: hjx 215 215 - fph: bao ewp 216 216 - riq: uoh hou qdj cyr vwt 217 217 - ajh: akx axr 218 218 - qvo: aps lka hlr tth zkr 219 219 - vzk: zab xru pui kmj 220 220 - wld: haj 221 221 - xym: pew mfj vnu 222 222 - akx: yae pgu oop cdt dac 223 223 - mmq: jzt byu 224 224 - nft: sdj byu 225 225 - ppl: bxp gou fpc 226 226 - dkm: yxm haj gfk 227 227 - wgp: aps hlr zkr 228 228 - vlb: sef 229 229 - gou: hlc nfe mzm 230 230 - vwe: ams aev 231 231 - qpu: you bbg zvu fwk gia 232 232 - rho: vwt hou 233 233 - han: ftn frk elr 234 234 - swp: dlh rpb 235 235 - wji: sar xos vha ums 236 236 - sef: wur 237 237 - jje: szq kfc 238 238 - xly: hlc nfe 239 239 - lkw: uoh hou cyr 240 240 - tvg: vzx uug 241 241 - tat: ljj ppg ysn 242 242 - fft: olv dyq 243 243 - tym: yxm haj 244 244 - cqz: gcd nmz 245 245 - xbu: haj yxm gfk 246 246 - enr: amb 247 247 - sjd: iwf 248 248 - piz: cuq pcx fph fgc 249 249 - kgv: haj yxm 250 250 - cwm: out 251 251 - ogu: zxf zab pui 252 252 - cxx: elg osd 253 253 - qfb: une 254 254 - ptb: ftb wbn 255 255 - pui: bsl 256 256 - zkr: dkw zrk jzg ryr cxk ufd lfc slu smv cqz bio ptb hxe jev ujb ogt jaf enr yba mbw 257 257 - pif: vjs ixj 258 258 - oaw: cir 259 259 - qjd: uhu xcb zco yrq 260 260 - pcx: otd sqj bao ewp 261 261 - pwt: lkh vzx 262 262 - szq: fpc bxp 263 263 - lfc: jvd 264 264 - haj: pwf yuo xdb znh aso asf aod kot srf fmh xaz qdl fzl 265 265 - etc: ing 266 266 - jdz: fwk gia zvu bbg 267 267 - sjq: aps lka hlr tth zkr 268 268 - cuq: ewp bao sqj 269 269 - qun: cwr fgw fbj 270 270 - pny: kjs lft qmn 271 271 - fwa: gia bbg zvu you 272 272 - mgf: fac 273 273 - uxl: hni 274 274 - vzo: cju xvf fcg lff 275 275 - alf: byu sdj 276 276 - xvf: pqj mgb isf pqf rxh 277 277 - dyq: rpb lcc 278 278 - yek: hca hsh 279 279 - wcn: rxs 280 280 - xcd: bkg ggb 281 281 - jcv: yxm haj gfk 282 282 - gqb: out 283 283 - rab: hpj jkp 284 284 - srf: efu qsj 285 285 - kme: hlr aps 286 286 - ahr: awd mcy 287 287 - ljd: out 288 288 - kmd: mgq 289 289 - swz: enh tla 290 290 - qnt: sjq gtw 291 291 - pqj: zzp 292 292 - bio: nmz gcd 293 293 - pbv: hlr tth zkr 294 294 - gip: taz 295 295 - dus: wdt nei 296 296 - vzx: ooc ceb ihw jix 297 297 - tii: ovj jna xly 298 298 - sve: uoh 299 299 - fcg: isf mgb pqj pqf 300 300 - irm: piz ohg kft grh 301 301 - osd: xlv imk 302 302 - ftn: ljd mbu izi 303 303 - xpf: lne bez hpe wau 304 304 - dlh: kow tvs une hju 305 305 - boc: zkr hlr 306 306 - lke: out 307 307 - fbf: bbg zvu fwk you 308 308 - zuj: hlr lka zkr tth 309 309 - kwq: gia bbg 310 310 - dac: mef djs 311 311 - vcd: nfe 312 312 - cju: pqf rxh 313 313 - ayb: xbu rlf 314 314 - jna: mzm hlc 315 315 - hfg: mzm 316 316 - ajl: fka hpj fhl 317 317 - dxs: imk tak 318 318 - vwv: kdb xpf 319 319 - iwf: ytn pgr jdz 320 320 - mcy: ytn 321 321 - qhv: osb gzq 322 322 - ove: hni gdl 323 323 - gdl: xym zyh 324 324 - fhl: vbv ebd 325 325 - oiu: xmm ing 326 326 - fbj: hlc 327 327 - lff: isf pqj 328 328 - rxs: hpe wau bez 329 329 - hxe: vax 330 330 - bkg: pew mfj 331 331 - jaf: nmz huk 332 332 - xhd: ggr cir how 333 333 - yor: eae 334 334 - zpc: qun nik 335 335 - ovj: mzm 336 336 - ixl: sjq kme gtw 337 337 - hlr: bxj bio dkw cxk ryr jzg zrk 338 338 - gbv: hni gdl 339 339 - kdd: you zvu fwk 340 340 - osb: lay zvs kwq fbf 341 341 - tfa: tth zkr lka 342 342 - qvu: lmn mjn 343 343 - jdy: ifh qsj efu yas 344 344 - nkv: jje 345 345 - ojn: ahf wov hai nhx bhk 346 346 - rfy: nkt 347 347 - xmm: ebx aak 348 348 - jzt: mck rak 349 349 - mio: lcc 350 350 - frk: izi oim 351 351 - kqf: hlc 352 352 - kft: fgc 353 353 - pqr: zir jdx 354 354 - kcx: zny 355 355 - ytn: fwk gia zvu bbg 356 356 - wau: une hju tvs 357 357 - ljj: wjd pum zuj 358 358 - jzg: huk gcd 359 359 - ryr: nik 360 360 - xcb: qnt 361 361 - uco: fwk bbg you 362 362 - pqf: xpt ifc 363 363 - mgb: zzp ifc 364 364 - diw: fac dxs elg osd 365 365 - aak: vht nko kdd boe 366 366 - vha: fhh vzq qvo boc 367 367 - pgu: rfy 368 368 - phe: mgq asn 369 369 - zir: dap bic 370 370 - vbv: pbv bik 371 371 - fwb: vsy 372 372 - ipq: swp olv dyq iur 373 373 - xlv: pdz gvy wld xob 374 374 - aai: ixj vjs 375 375 - qnf: kcx fjw tvg wqf pcm fry 376 376 - sym: aai ejn 377 377 - ppg: wjd zuj pum 378 378 - nak: fbf kwq zvs 379 379 - vqp: out 380 380 - hca: gix rnu 381 381 - tla: cnb dkm tym jcv 382 382 - xmh: tvs 383 383 - brj: iwf 384 384 - ohg: pcx fgc fph 385 385 - mck: out 386 386 - bne: zxf 387 387 - uug: ceb ooc 388 388 - wuh: gia fwk zvu you 389 389 - how: qfb slz vka 390 390 - glc: xcb yrq zco 391 391 - isf: ifc zzp 392 392 - elg: imk xlv wur 393 393 - mgq: hju kow 394 394 - upa: sdj jzt 395 395 - agt: xmm 396 396 - kot: phe wsw kmd tur 397 397 - ftb: ywc jox 398 398 - uzi: byz lay kwq fbf 399 399 - brh: wax pvr kxq 400 400 - aev: afp tla 401 401 - ats: nso jdo 402 402 - eae: mio olv iur swp 403 403 - foi: kme 404 404 - qdl: arh zal rcr yor 405 405 - ngp: yxm haj 406 406 - yir: enh 407 407 - cfh: out 408 408 - asf: yor arh zal 409 409 - vwl: ona ums xos sar 410 410 - lyf: yxm gfk 411 411 - hlc: sve lce sfj oiu brj zgd wyd byh ajh sjd etc vzk qhv cmu bne 412 412 - etm: out 413 413 - zrk: ihs jvd 414 414 - fse: nfe mzm 415 415 - rus: yek 416 416 - nei: zkr tth hlr lka 417 417 - izt: out 418 418 - ptn: jzt 419 419 - ebd: bik one 420 420 - rcr: ipq fft 421 421 - txb: ozj 422 422 - lkh: ceb ihw jix ayb 423 423 - zal: fft 424 424 - wpb: how 425 425 - ooc: rlf 426 426 - wjd: tth hlr lka 427 427 - ona: boc tfa fhh vzq 428 428 - qqj: tvs hju 429 429 - zco: qnt 430 430 - izi: out 431 431 - hpj: ebd fnj vbv 432 432 - rpb: tvs une 433 433 - miw: swz bhg ams 434 434 - qte: luf gko 435 435 - wpu: vcd xgr jna xly 436 436 - awd: pgr jdz 437 437 - byh: akx axr vsy 438 438 - fac: imk 439 439 - rbx: aps tth zkr lka hlr 440 440 - dwc: wpb oaw ryk 441 441 - wbn: txb jox 442 442 - hly: szq ppl 443 443 - sdj: mck lke 444 444 - une: qjd dhn rus wrf ojn ajl the ezl 445 445 - ujn: out 446 446 - ouy: gqb esf izt 447 447 - swg: yek 448 448 - amb: hly gir xfk 449 449 - dap: haj yxm 450 450 - nnz: ohg piz dqx kft grh 451 451 - xfk: ppl kfc 452 452 - nik: cwr hfg fgw auy 453 453 - nmz: bye 454 454 - bic: haj gfk 455 455 - enh: jcv tym dkm cnb lyf 456 456 - pcm: vlb cxx zny 457 457 - qnw: wgp pum zuj 458 458 - dhn: nhx 459 459 - dqx: pcx fgc fph 460 460 - skx: aps lka zkr tth 461 461 - mpw: gia fwk bbg 462 462 - wyd: zxf kmj pui xru 463 463 - nso: mjn 464 464 - mjd: nft alf upa mmq 465 465 - cmu: awd mcy 466 466 - jdo: mjn lmn jmd 467 467 - cxk: ihs ped jvd 468 468 - gua: nfe hlc 469 469 - ewp: etm ehj 470 470 - fzl: kmd tur wsw 471 471 - gkv: jdo qvu wzm 472 472 - cnt: lvi irm 473 473 - bja: diw cxx zny 474 474 - kbq: ixl 475 475 - ums: qvo boc tfa fhh vzq 476 476 - mjn: han pue 477 477 - qdj: fwa 478 478 - ulf: gir hly 479 479 - gcd: tii 480 480 - sjy: cwm cfh vqp vkw 481 481 - kow: ojn nmm wrf vwl qjd mze xci swg xls wth glc tat ypt rab hwr dhn rus zyt the wji ajl 482 482 - xjh: fjw fll pcm xfb pwt miw bja vwe rpp pmn kcx pny qte bqb 483 483 - ogt: vax qun nik 484 484 - znt: vsy akx 485 485 - jox: wxx ozj ize com 486 486 - bhg: afp tla 487 487 - xnn: wzm jdo ars 488 488 - wzm: lmn 489 489 - pgr: you zvu bbg 490 490 - kwb: ngp ogh 491 491 - elm: gko ucg luf pqr 492 492 - tei: yxm gfk 493 493 - gvy: gfk 494 494 - ryk: cir how 495 495 - dkw: nik 496 496 - epu: cwm vtp vqp vkw 497 497 - vwt: qpu 498 498 - hwr: qnw ysn 499 499 - jjf: pny oka kcx bqb lvp vwe rpp fjw xfb fry pcm imt 500 500 - cir: slz xva qfb 501 501 - yxm: srf kot cnf aod dwc asf aso qfo wcn znh xdb pwf yuo qeh jdy vwv qdl xaz fmh 502 502 - jvd: kqf fse 503 503 - byz: zvu bbg you 504 504 - rrt: cju xvf lff 505 505 - vjs: tvs kow une 506 506 - wax: taz 507 507 - xdb: yas sym efu qsj 508 508 - ozj: mzm 509 509 - bao: ehj box ujn 510 510 - pue: ftn 511 511 - fgc: lfq bao otd 512 512 - hkw: hni gdl 513 513 - xob: yxm haj 514 514 - smv: jvd ped 515 515 - vnu: sjy 516 516 - gir: kfc 517 517 - hou: mpw fwa 518 518 - lne: kow 519 519 - sfj: osb nak uzi 520 520 - qmn: ngp kgv 521 521 - otd: ujn kak box 522 522 - qfo: ifh yas 523 523 - ujb: ftb pka wbn 524 524 - ped: gua kqf fse 525 525 - dcm: gzq nak osb 526 526 - hai: ztu 527 527 - vns: upa alf 528 528 - kjs: ngp kgv 529 529 - aso: xpf rxs 530 530 - rpp: luf pqr gko ucg 531 531 - fjw: qmn kwb 532 532 - ezl: fka jkp fhl 533 533 - huk: wpu tii bye 534 534 - mzm: sve rho fob lkw yut riq brj fwb ajh byh zgd mgz etc sjd ndx dcm cmu vzk qhv bne cwe 535 535 - zzp: jpr 536 536 - ahf: skx rbx dqs 537 537 - auy: mzm nfe hlc 538 538 - xva: kow tvs 539 539 - wci: hpj 540 540 - bhk: skx ztu rbx 541 541 - tur: qqj 542 542 - zvu: wms vzo vfi brh mox fdo ove zuk irl vkn hbz 543 543 - nkt: you zvu bbg gia 544 544 - pdz: gfk haj 545 545 - fnj: ayn bik pbv 546 546 - tco: bbg fwk gia you 547 547 - jix: cwa 548 548 - cwe: mcy 549 549 - jmd: fuu obk pue 550 550 - cji: boe 551 551 - aod: vya kmd 552 552 - kdb: wau lne bez 553 553 - xos: vzq

-10

day11/smallinput.txt

··· 1 1 - aaa: you hhh 2 2 - you: bbb ccc 3 3 - bbb: ddd eee 4 4 - ccc: ddd eee fff 5 5 - ddd: ggg 6 6 - eee: out 7 7 - fff: out 8 8 - ggg: out 9 9 - hhh: ccc fff iii 10 10 - iii: out

-63

day11/src/main.rs

··· 1 1 - mod server; 2 2 - use clap::Parser; 3 3 - use server::Server; 4 4 - 5 5 - #[derive(Parser)] 6 6 - struct Args { 7 7 - #[clap(short, long)] 8 8 - file: String, 9 9 - #[clap(short, long)] 10 10 - debug: bool, 11 11 - } 12 12 - 13 13 - fn main() { 14 14 - let args = Args::parse(); 15 15 - if args.debug { 16 16 - println!("=== Debug mode enabled ==="); 17 17 - } 18 18 - 19 19 - let mut nodes: Vec<Server> = Vec::new(); 20 20 - let file_contents = std::fs::read_to_string(&args.file).expect("Failed to read file"); 21 21 - 22 22 - nodes.push(Server::new("out", 0)); 23 23 - 24 24 - for line in file_contents.lines() { 25 25 - let tokens = line.split_whitespace().collect::<Vec<_>>(); 26 26 - let source = tokens[0]; 27 27 - let server = Server::new(&source[..source.len() - 1], nodes.len()); 28 28 - nodes.push(server); 29 29 - } 30 30 - 31 31 - println!("Nodes: {:?}", nodes); 32 32 - 33 33 - for line in file_contents.lines() { 34 34 - let tokens = line.split_whitespace().collect::<Vec<_>>(); 35 35 - let source = &tokens[0][..tokens[0].len() - 1]; 36 36 - let destinations = &tokens[1..]; 37 37 - println!("Source: {}, Destinations: {:?}", source, destinations); 38 38 - let server_index = nodes.iter().position(|s| s.label == source).unwrap(); 39 39 - for next_label in destinations { 40 40 - let index = nodes.iter().position(|s| s.label == **next_label).unwrap(); 41 41 - nodes[server_index].add_next(index); 42 42 - } 43 43 - } 44 44 - 45 45 - let you = nodes.iter().position(|s| s.label == "you").unwrap(); 46 46 - 47 47 - let mut paths = 0; 48 48 - let mut path: Vec<usize> = Vec::new(); 49 49 - 50 50 - path.push(you); 51 51 - 52 52 - while let Some(next) = path.pop() { 53 53 - if next == 0 { 54 54 - paths += 1; 55 55 - continue; 56 56 - } 57 57 - for &neighbor in &nodes[next].next { 58 58 - path.push(neighbor); 59 59 - } 60 60 - } 61 61 - 62 62 - println!("Visited {} paths", paths); 63 63 - }

-22

day11/src/server.rs

··· 1 1 - use std::fmt::Debug; 2 2 - 3 3 - #[derive(Debug, Eq, PartialEq, Hash)] 4 4 - pub struct Server { 5 5 - pub label: String, 6 6 - pub index: usize, 7 7 - pub next: Vec<usize>, // Store indices instead of references 8 8 - } 9 9 - 10 10 - impl Server { 11 11 - pub fn new(label: &str, index: usize) -> Self { 12 12 - Server { 13 13 - label: label.to_string(), 14 14 - index, 15 15 - next: Vec::new(), 16 16 - } 17 17 - } 18 18 - 19 19 - pub fn add_next(&mut self, next_index: usize) { 20 20 - self.next.push(next_index); 21 21 - } 22 22 - }

-186

day2/Cargo.lock

··· 1 1 - # This file is automatically @generated by Cargo. 2 2 - # It is not intended for manual editing. 3 3 - version = 4 4 4 - 5 5 - [[package]] 6 6 - name = "anstream" 7 7 - version = "0.6.21" 8 8 - source = "registry+https://github.com/rust-lang/crates.io-index" 9 9 - checksum = "43d5b281e737544384e969a5ccad3f1cdd24b48086a0fc1b2a5262a26b8f4f4a" 10 10 - dependencies = [ 11 11 - "anstyle", 12 12 - "anstyle-parse", 13 13 - "anstyle-query", 14 14 - "anstyle-wincon", 15 15 - "colorchoice", 16 16 - "is_terminal_polyfill", 17 17 - "utf8parse", 18 18 - ] 19 19 - 20 20 - [[package]] 21 21 - name = "anstyle" 22 22 - version = "1.0.13" 23 23 - source = "registry+https://github.com/rust-lang/crates.io-index" 24 24 - checksum = "5192cca8006f1fd4f7237516f40fa183bb07f8fbdfedaa0036de5ea9b0b45e78" 25 25 - 26 26 - [[package]] 27 27 - name = "anstyle-parse" 28 28 - version = "0.2.7" 29 29 - source = "registry+https://github.com/rust-lang/crates.io-index" 30 30 - checksum = "4e7644824f0aa2c7b9384579234ef10eb7efb6a0deb83f9630a49594dd9c15c2" 31 31 - 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-7

day2/Cargo.toml

··· 1 1 - [package] 2 2 - name = "day2" 3 3 - version = "0.1.0" 4 4 - edition = "2024" 5 5 - 6 6 - [dependencies] 7 7 - clap = { version = "4.5.53", features = ["derive"] }

-1

day2/input.txt

··· 1 1 - 8123221734-8123333968,2665-4538,189952-274622,4975-9031,24163352-24202932,1233-1772,9898889349-9899037441,2-15,2147801-2281579,296141-327417,8989846734-8989940664,31172-42921,593312-632035,862987-983007,613600462-613621897,81807088-81833878,13258610-13489867,643517-782886,986483-1022745,113493-167913,10677-16867,372-518,3489007333-3489264175,1858-2534,18547-26982,16-29,247-366,55547-103861,57-74,30-56,1670594-1765773,76-129,134085905-134182567,441436-566415,7539123416-7539252430,668-1146,581563513-581619699

-3

day2/shortinput.txt

··· 1 1 - 11-22,95-115,998-1012,1188511880-1188511890,222220-222224, 2 2 - 1698522-1698528,446443-446449,38593856-38593862,565653-565659, 3 3 - 824824821-824824827,2121212118-2121212124

-114

day2/src/main.rs

··· 1 1 - use clap::Parser; 2 2 - use std::fs; 3 3 - 4 4 - #[derive(Parser, Debug)] 5 5 - #[command(author, version, about, long_about = None)] 6 6 - struct Args { 7 7 - #[arg(short, long)] 8 8 - file: String, 9 9 - } 10 10 - 11 11 - fn main() { 12 12 - let args = Args::parse(); 13 13 - 14 14 - let sum = sum_ids(&args.file); 15 15 - println!("Sum of all invalid ids is {}", sum); 16 16 - } 17 17 - 18 18 - fn is_invalid_id(id: u64) -> bool { 19 19 - let log_10 = (id as f64).log10().ceil() as u32; 20 20 - let magic_number = 10u64.pow(log_10 / 2); 21 21 - /* println!( 22 22 - "Checking ID: {}, divisor is {}, magic_number is {}", 23 23 - id, log_10, magic_number 24 24 - ); */ 25 25 - id / magic_number == id % magic_number 26 26 - } 27 27 - 28 28 - // Go through each log10 from 1..log10(n) 29 29 - // check last n digits of divisor == modulo 30 30 - // eg 121212 31 31 - // n = 121212, i = 1, mod = 2, ldigits = 1 32 32 - // n = 121212, i = 2, mod = 12, ldigits = 12 33 33 - // -> n = 1212, i = 2, mod = 12, ldigits = 12 !!! 34 34 - // 35 35 - // 101 -> 1) 10,1 ; 0 != 1 36 36 - // 101 -> 2) 1,1 1 < 10 !! 37 37 - 38 38 - fn is_invalid_id_hard(id: u64) -> bool { 39 39 - // println!("=== Checking ID: {} ===", id); 40 40 - let mut c_id = id; 41 41 - let mut cur_part; 42 42 - // i is the log value, ie the window size we are checking 43 43 - for i in 1..(id as f64).log10() as u32 + 1 { 44 44 - // trim off end of number 45 45 - // we saved the current part above 46 46 - let pow_10 = (10u32.pow(i) as u64); 47 47 - cur_part = c_id % pow_10; 48 48 - 49 49 - // println!("n = {}, i = {}, pow_10 = {}", id, i, pow_10); 50 50 - // repeat until the value drops below the target log 51 51 - while c_id > 10 { 52 52 - // remove last n digits from c_id 53 53 - c_id = c_id / pow_10; 54 54 - // last i digits of c_id 55 55 - let last_digits = c_id % pow_10; 56 56 - if last_digits == cur_part { 57 57 - // println!( 58 58 - // "For exponent {}, digits {} and {} matched in {}, id slice {}", 59 59 - // i, last_digits, cur_part, id, c_id 60 60 - // ); 61 61 - if last_digits >= (10u32.pow(i - 1) as u64) && c_id == last_digits { 62 62 - return true; 63 63 - } 64 64 - // set cur_part to last i+1 digits 65 65 - // cur_part = c_id / pow_10 % (10u32.pow(i + 1) as u64); 66 66 - } else { 67 67 - // println!( 68 68 - // "For exponent {}, digits {} and {} DO NOT MATCH in {}, id slice {}", 69 69 - // i, last_digits, cur_part, id, c_id 70 70 - // ); 71 71 - break; 72 72 - } 73 73 - } 74 74 - c_id = id; 75 75 - } 76 76 - return false; 77 77 - } 78 78 - 79 79 - // Finding repeated bits 80 80 - // 81 81 - // for i in 1..log10(n) 82 82 - // 83 83 - 84 84 - fn check_range(start: u64, end: u64) -> u64 { 85 85 - println!("Checking range from {} to {}", start, end); 86 86 - let mut invalid_sum: u64 = 0; 87 87 - for n in start..end + 1 { 88 88 - if is_invalid_id_hard(n) { 89 89 - println!("Invalid ID: {}", n); 90 90 - invalid_sum += n; 91 91 - } 92 92 - } 93 93 - invalid_sum 94 94 - } 95 95 - 96 96 - fn sum_ids(filename: &str) -> u64 { 97 97 - let file_contents = fs::read_to_string(filename).expect("Failed to read file"); 98 98 - let mut invalid_sum: u64 = 0; 99 99 - for range in file_contents.split(',') { 100 100 - let split_range: Vec<&str> = range.trim().split('-').collect(); 101 101 - let start = split_range 102 102 - .get(0) 103 103 - .unwrap_or(&&"") 104 104 - .parse::<u64>() 105 105 - .expect("Could not unwrap start value of range"); 106 106 - let end = split_range 107 107 - .get(1) 108 108 - .unwrap_or(&&"") 109 109 - .parse::<u64>() 110 110 - .expect("Could not unwrap end value of range"); 111 111 - invalid_sum += check_range(start, end); 112 112 - } 113 113 - return invalid_sum; 114 114 - }

-186

day3/Cargo.lock

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-7

day3/Cargo.toml

··· 1 1 - [package] 2 2 - name = "day3" 3 3 - version = "0.1.0" 4 4 - edition = "2024" 5 5 - 6 6 - [dependencies] 7 7 - clap = { version = "4.5.53", features = ["derive"] }

-200

day3/input.txt

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-4

day3/shortinput.txt

··· 1 1 - 987654321111111 2 2 - 811111111111119 3 3 - 234234234234278 4 4 - 818181911112111

-130

day3/src/main.rs

··· 1 1 - use clap::Parser; 2 2 - use std::{fs, ops::Sub}; 3 3 - 4 4 - #[derive(Parser, Debug)] 5 5 - #[command(author, version, about, long_about = None)] 6 6 - struct Args { 7 7 - #[arg(short, long)] 8 8 - file: String, 9 9 - } 10 10 - 11 11 - // Advent of Code Day 3 12 12 - // Joltage battery problem 13 13 - 14 14 - fn main() { 15 15 - let args = Args::parse(); 16 16 - 17 17 - let total_joltage = sum_joltage(&args.file); 18 18 - println!("Maximum battery joltage is {}", total_joltage); 19 19 - } 20 20 - 21 21 - fn sum_joltage(filename: &str) -> u64 { 22 22 - let contents = fs::read_to_string(filename).expect("Unable to read file"); 23 23 - let banks = contents.lines(); 24 24 - 25 25 - let mut total_joltage = 0; 26 26 - for bank in banks { 27 27 - total_joltage += get_12_joltage(bank); 28 28 - } 29 29 - 30 30 - return total_joltage; 31 31 - } 32 32 - 33 33 - // Naive approach with 2 for loops to parse string 34 34 - // Go to biggest number before the end and find max 35 35 - // Redo starting from index of previous number + 1 36 36 - fn get_max_joltage(bank: &str) -> u32 { 37 37 - // get biggest starting digit before last one 38 38 - let mut digit_a = 0; 39 39 - let mut digit_b_start = 0; 40 40 - for (index, c) in bank[..bank.len() - 1].chars().enumerate() { 41 41 - match c.to_digit(10) { 42 42 - Some(digit) => { 43 43 - if digit > digit_a { 44 44 - digit_a = digit; 45 45 - digit_b_start = index + 1; 46 46 - } 47 47 - } 48 48 - _ => { 49 49 - println!("invalid digit") 50 50 - } 51 51 - } 52 52 - } 53 53 - println!("Digit a is {} at index {}", digit_a, digit_b_start); 54 54 - 55 55 - let mut digit_b = 0; 56 56 - for c in bank[digit_b_start..].chars() { 57 57 - match c.to_digit(10) { 58 58 - Some(digit) => { 59 59 - if digit > digit_b { 60 60 - digit_b = digit; 61 61 - } 62 62 - } 63 63 - _ => { 64 64 - println!("invalid digit") 65 65 - } 66 66 - } 67 67 - } 68 68 - println!("Digit b is {}", digit_b); 69 69 - return digit_a * 10 + digit_b; 70 70 - } 71 71 - 72 72 - // Basically a sliding window approach, where you find the max value within each window 73 73 - // ensuring that you still have enough characters later on to fill out the required number 74 74 - // of batteries, represented here as K (the problem asks for 12 but generalized solution!! yay!!) 75 75 - fn get_k_joltages(bank: &str, k: usize) -> u64 { 76 76 - // initialize vector of len k for storing voltages (i cannot be bothered to use "joltage" everywhere) 77 77 - let mut voltages = vec![0; k]; 78 78 - 79 79 - // used to store global position from the slice positions 80 80 - let mut index_acc = 0; 81 81 - // used to store the relative positions in each slice 82 82 - let mut start_index = 0; 83 83 - // stores maximum value within each slice 84 84 - let mut max_voltage = 0; 85 85 - 86 86 - for n in (1..=k).rev() { 87 87 - // Get the chars from start_index to len(bank)-n, shouldn't underflow bc of assert 88 88 - assert!(n < bank.len()); 89 89 - let end_index = bank.len().sub(n - 1); 90 90 - let arr_slice = bank[start_index..end_index].chars(); 91 91 - // println!("arr_slice: {:?} from bank: {}", arr_slice.as_str(), bank); 92 92 - for (index, c) in arr_slice.enumerate() { 93 93 - // println!( 94 94 - // "n: {}, index: {}, c: {}, start_index: {}, end_index: {}, max_voltage: {}", 95 95 - // n, index, c, start_index, end_index, max_voltage 96 96 - // ); 97 97 - 98 98 - let cvalue = c.to_digit(10).unwrap(); 99 99 - if cvalue > max_voltage { 100 100 - max_voltage = cvalue; 101 101 - // this shit drove me so crazy. 102 102 - start_index = index_acc + index + 1; 103 103 - } 104 104 - } 105 105 - // Update global position to the location of last found maximum + 1 106 106 - index_acc = start_index; 107 107 - // after getting max value, set the nth voltage value and reset max_voltage value 108 108 - voltages[k - n] = max_voltage; 109 109 - max_voltage = 0; 110 110 - } 111 111 - // println!("Voltages: {:?}", voltages); 112 112 - return voltages 113 113 - .into_iter() 114 114 - .enumerate() 115 115 - .fold(0u64, |acc, (index, value)| { 116 116 - // println!("value: {}, index: {}, pow: {}", value, index, k.sub(index)); 117 117 - acc + (value as u64).strict_mul(10u64.pow(k.sub(index + 1) as u32)) 118 118 - }); 119 119 - } 120 120 - 121 121 - // Part 2 requires solving for 12 batteries 122 122 - // Likely should use recursion --PSYCH JK DIDN'T DO THAT LMAO 123 123 - // Basically want to find largest digit , next largest over and over 124 124 - // Maybe string manipulation is bad idea, using raw numbers lets powers of ten 125 125 - // function as indexes? So 9_000 would be bigger than 900 126 126 - // I think the problem can be recontextualized as "drop the lowest digits from left to right" 127 127 - // ^^ this was also wrong. i was dumb last night fr. 128 128 - fn get_12_joltage(bank: &str) -> u64 { 129 129 - get_k_joltages(bank, 12) 130 130 - }

-7

day4/Cargo.lock

··· 1 1 - # This file is automatically @generated by Cargo. 2 2 - # It is not intended for manual editing. 3 3 - version = 4 4 4 - 5 5 - [[package]] 6 6 - name = "day4" 7 7 - version = "0.1.0"

-4

day4/Cargo.toml

··· 1 1 - [package] 2 2 - name = "day4" 3 3 - version = "0.1.0" 4 4 - edition = "2024"

-136

day4/input.txt

··· 1 1 - .@..@@@@@.@.@@@..@.@@..@@@.@.@.....@@.@@.@@@@@@..@@@.@.@.@..@..@@@@@@@..@@@.@.@@.@@@@@@.@@@@@@@.@@@.@@@@@.@...@@@@@.@@.@...@.@@.@@.@@@@@ 2 2 - @@@.@@.@@@...@.@.@..@.@@...@@@@@@@@@.@@@@@.@@@@.@@@.@@@.@..@@@@..@...@@@@..@.@@..@.@@.@@@@@@..@@@.@@.@@@@@.@....@@@@@@...@.@@@.@@....@@@ 3 3 - ..@@@@.@.@@@@.@@@@@...@@@.@@...@@@@...@@.@@@@.@@@@@@@@@@@.@.@@@@@@@...@@@@@.@@.@@@@.@....@@@@@@.@@@.@@@@@@@.@...@@@...@@@.@..@@@@.@@@@.@ 4 4 - @@@@@@@.@.@@..@@.@@@@@@.@@@..@@@@.@@..@@@@@@@@@.@@@@@@....@..@.@@.@@.@@@@.@@@.@.@.@@@@@.@@@@..@..@@.@..@@@..@@.@@.@..@.@.@@@.@@@.@....@@ 5 5 - @.@@..@.@@.@@@@..@@@@@@@@.@@@@@@@@@@@@@....@@.@@@@@@.@@@@..@.@..@@@.@@@@..@.@@@.@@.@@@@@@.@@.@@@@@@.@@.@@@@.@.@@@@@.@@@.@@@.@@@@..@@@@@@ 6 6 - @@@@@.@...@.@..@@.@@..@..@@@.@.@.@.@@.@@@@.@@..@...@@@@@@@@@@@..@@@@..@@.@@..@@@@..@@@@@@@@.@@.@@@@@@@@@.@@...@...@@@..@@@@..@.@@@.@@@@. 7 7 - @@@@@@.@@@@@@@......@.@@@@@@@@@@@@.@@@@...@@@.@.@@@@@...@@.@@@@@.@@@.@@@.@@@@...@.@@@@@@@@.@.@@@..@@.@@.@@@..@@@..@@@@.@@@.@@.@@@..@..@@ 8 8 - 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.@@@@@@@.@.@@@.@@@.@@@@@@.@@@.@@@@@@@@@@@...@.@@.@@.@@..@@@@@@.@@@@@@.@@@...@...@@@.@@@.@..@@@@@@.@.@@@@@@@@@@@@@@@@@.@..@..@@@@@.@@@.@. 23 23 - .@.@@@@@.@.@@..@@.@.@@@@.@@@@...@.@..@..@@.@.@..@@@@@@.@...@@@.@@@@@@...@@@@@@@@.@@@@@.@.@.@.@@..@@.@@@.@..@@@.@@@@.@@@@@@.@..@@@@.@@@.@ 24 24 - ..@@..@@.@@.@.@@@@@@@@@@@.@@@@@@.@.@@.@@@@@@.@@..@.@@@.@@@@..@@.@...@.@@@@@@@@.@@@@@@@...@.@.@@@@@@.@@@@@@@@@@@@@@..@@@.@@@@.@@@@@.@@@.@ 25 25 - ..@.@@@@@@@@..@@@..@@@.@@@@@@@@..@@.@@@@@@@@@@@@@@.@@@.@@@@@@.@.@@@.@@@@@@.@@.@.@@.@@.@@..@@@.@@@..@.@@@@@@@.@.@.@@@@.@..@@@..@...@....@ 26 26 - .@@.@@@@.@@@@@.@..@.@.@.@@..@.@@@@@@@.@.@@..@@....@@@@.@@@..@.@.@@@@.@....@.@.@@@@.@.@.@@@@@@@.@@.@@@..@@@..@@@@...@@@..@@@.@.@..@@@@@@@ 27 27 - @.@.@...@.@.@@@@@@..@.@@.@@.@.@@@@...@@.@.@@@@.....@@@@@@@@..@....@.@@@@@@..@@@@@...@..@@@@@@@@@@@.@@@@@.@@@..@@.@..@@...@.@@@..@@@..@@@ 28 28 - @@@@@.@.@@..@..@@@...@@.@@.@@.@@@.@@@@@@@@@@@@@@.@@@@.@@...@@.@@.@@@.@..@@@..@@@@@@@...@@@@@....@..@.@.@.@@@.@@@@@@@@.@.@...@.@.@.@@@.@. 29 29 - 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-10

day4/shortinput.txt

··· 1 1 - ..@@.@@@@. 2 2 - @@@.@.@.@@ 3 3 - @@@@@.@.@@ 4 4 - @.@@@@..@. 5 5 - @@.@@@@.@@ 6 6 - .@@@@@@@.@ 7 7 - .@.@.@.@@@ 8 8 - @.@@@.@@@@ 9 9 - .@@@@@@@@. 10 10 - @.@.@@@.@.

-115

day4/src/main.rs

··· 1 1 - use std::fmt::Display; 2 2 - use std::ops::Add; 3 3 - 4 4 - // what will be used as my config here 5 5 - 6 6 - struct Warehouse { 7 7 - layout: Vec<Vec<Option<char>>>, 8 8 - width: u16, 9 9 - height: u16, 10 10 - } 11 11 - 12 12 - impl Warehouse { 13 13 - fn get(&self, x: u16, y: u16) -> Option<char> { 14 14 - *self.layout.get(y as usize)?.get(x as usize)? 15 15 - } 16 16 - 17 17 - fn set(&mut self, x: u16, y: u16, value: char) { 18 18 - // TODO : This is not a complete check, could cause issues 19 19 - if y < self.layout.len() as u16 && x < self.layout[0].len() as u16 { 20 20 - self.layout[y as usize][x as usize] = Some(value); 21 21 - } 22 22 - } 23 23 - 24 24 - fn load_from_file(filename: &str) -> Warehouse { 25 25 - let contents = std::fs::read_to_string(filename).expect("Failed to read file"); 26 26 - let width = contents.lines().next().unwrap().len() as u16; 27 27 - let height = contents.lines().count() as u16; 28 28 - let layout = contents 29 29 - .lines() 30 30 - .map(|line| line.chars().map(|c| Some(c)).collect()) 31 31 - .collect(); 32 32 - Warehouse { 33 33 - layout, 34 34 - width, 35 35 - height, 36 36 - } 37 37 - } 38 38 - 39 39 - fn count_neighbors(&self, x: u16, y: u16) -> Option<u8> { 40 40 - //println!("Counting neighbors at ({}, {})", x, y); 41 41 - let mut neighbors = 0u8; 42 42 - for n_y in y.saturating_sub(1)..y.add(2).min(self.height) { 43 43 - for n_x in x.saturating_sub(1)..x.add(2).min(self.width) { 44 44 - if n_y == y && n_x == x { 45 45 - continue; 46 46 - } 47 47 - if let Some(cell) = self.get(n_x, n_y) 48 48 - && cell == '@' 49 49 - { 50 50 - neighbors += 1; 51 51 - //println!("Neighbor found at ({}, {})", n_x, n_y); 52 52 - } 53 53 - } 54 54 - } 55 55 - Some(neighbors) 56 56 - } 57 57 - } 58 58 - 59 59 - impl Display for Warehouse { 60 60 - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { 61 61 - for row in &self.layout { 62 62 - for cell in row { 63 63 - match cell { 64 64 - Some(c) => write!(f, "{}", c)?, 65 65 - None => write!(f, ".")?, 66 66 - } 67 67 - } 68 68 - writeln!(f)?; 69 69 - } 70 70 - Ok(()) 71 71 - } 72 72 - } 73 73 - 74 74 - fn main() { 75 75 - // let printer_department = Warehouse::new(10, 10); 76 76 - let mut printer_department = Warehouse::load_from_file("input.txt"); 77 77 - // println!("{}", printer_department); 78 78 - 79 79 - let mut removed_rolls = 0; 80 80 - 81 81 - loop { 82 82 - let mut to_remove = Vec::<(u16, u16)>::new(); 83 83 - for (y, row) in printer_department.layout.iter().enumerate() { 84 84 - for (x, cell) in row.iter().enumerate() { 85 85 - match *cell { 86 86 - Some(c) => { 87 87 - if c != '.' 88 88 - && printer_department 89 89 - .count_neighbors(x as u16, y as u16) 90 90 - .unwrap_or(0) 91 91 - < 4 92 92 - { 93 93 - removed_rolls += 1; 94 94 - to_remove.push((x as u16, y as u16)); 95 95 - // print!("x"); // used for debug printing each removal 96 96 - } // else { 97 97 - // print!("{}", c); 98 98 - // } 99 99 - } 100 100 - None => continue, 101 101 - } 102 102 - } 103 103 - // println!(); 104 104 - } 105 105 - if to_remove.is_empty() { 106 106 - break; 107 107 - } 108 108 - // println!("== REMOVING ROLLS {:?}==", to_remove); 109 109 - for (x, y) in to_remove { 110 110 - printer_department.set(x, y, '.'); 111 111 - } 112 112 - } 113 113 - 114 114 - println!("Removed {} rolls", removed_rolls); 115 115 - }

-3

day4/tinyinput.txt

··· 1 1 - ... 2 2 - @.. 3 3 - ...

-7

day5/Cargo.lock

··· 1 1 - # This file is automatically @generated by Cargo. 2 2 - # It is not intended for manual editing. 3 3 - version = 4 4 4 - 5 5 - [[package]] 6 6 - name = "day5" 7 7 - version = "0.1.0"

-6

day5/Cargo.toml

··· 1 1 - [package] 2 2 - name = "day5" 3 3 - version = "0.1.0" 4 4 - edition = "2024" 5 5 - 6 6 - [dependencies]

-1185

day5/input.txt

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-11

day5/smallinput.txt

··· 1 1 - 3-5 2 2 - 10-14 3 3 - 16-20 4 4 - 12-18 5 5 - 6 6 - 1 7 7 - 5 8 8 - 8 9 9 - 11 10 10 - 17 11 11 - 32

-201

day5/src/main.rs

··· 1 1 - use std::cmp::Ordering; 2 2 - use std::fmt::Debug; 3 3 - use std::{cmp, fs}; 4 4 - 5 5 - #[derive(Debug)] 6 6 - struct Ingredient { 7 7 - id: u64, 8 8 - } 9 9 - 10 10 - // Describes a range of ingredient ids 11 11 - struct IngredientRange { 12 12 - start: Ingredient, 13 13 - end: Ingredient, 14 14 - } 15 15 - 16 16 - // Used to store and manage IngredientRanges 17 17 - struct IngredientDB { 18 18 - ranges: Vec<IngredientRange>, 19 19 - } 20 20 - 21 21 - // #[derive(Debug, Clone, Copy, Eq)] 22 22 - // don't think i need to do this deriving stuff 23 23 - // i find it a bit scary tbh 24 24 - enum RangeCap { 25 25 - Start(u64), 26 26 - End(u64), 27 27 - } 28 28 - 29 29 - // If both elements have the same type and value, they are equal 30 30 - impl cmp::PartialEq for RangeCap { 31 31 - fn eq(&self, other: &Self) -> bool { 32 32 - match (self, other) { 33 33 - (RangeCap::Start(a), RangeCap::Start(b)) => a == b, 34 34 - (RangeCap::End(a), RangeCap::End(b)) => a == b, 35 35 - _ => false, 36 36 - } 37 37 - } 38 38 - } 39 39 - 40 40 - // Implementing an ordering for these Range Caps (better name? terminal?) 41 41 - impl cmp::PartialOrd for RangeCap { 42 42 - fn partial_cmp(&self, other: &Self) -> Option<cmp::Ordering> { 43 43 - match (self, other) { 44 44 - // if both values are Starts or both are Ends, compare values normally 45 45 - (RangeCap::Start(a), RangeCap::Start(b)) => a.partial_cmp(b), 46 46 - (RangeCap::End(a), RangeCap::End(b)) => a.partial_cmp(b), 47 47 - // If they are equal, make sure Starts always go before Ends 48 48 - (RangeCap::Start(a), RangeCap::End(b)) => { 49 49 - let result = a.partial_cmp(b); 50 50 - if result == Some(Ordering::Equal) { 51 51 - Some(Ordering::Less) 52 52 - } else { 53 53 - result 54 54 - } 55 55 - } 56 56 - (RangeCap::End(a), RangeCap::Start(b)) => { 57 57 - let result = a.partial_cmp(b); 58 58 - if result == Some(Ordering::Equal) { 59 59 - Some(Ordering::Greater) 60 60 - } else { 61 61 - result 62 62 - } 63 63 - } 64 64 - } 65 65 - } 66 66 - } 67 67 - 68 68 - impl IngredientDB { 69 69 - // Initializing an IngredientDB is basically parsing an input string and initializing the ranges vector. 70 70 - fn new(range_list: &str) -> IngredientDB { 71 71 - let mut ranges = Vec::new(); 72 72 - for l in range_list.lines() { 73 73 - let splitline = l.split('-').collect::<Vec<&str>>(); 74 74 - ranges.push(IngredientRange { 75 75 - start: Ingredient { 76 76 - id: splitline[0].parse().expect("Failed to parse ingredient ID"), 77 77 - }, 78 78 - end: Ingredient { 79 79 - id: splitline[1].parse().expect("Failed to parse ingredient ID"), 80 80 - }, 81 81 - }); 82 82 - } 83 83 - IngredientDB { ranges } 84 84 - } 85 85 - 86 86 - // We can check if an ingredient is fresh by comparing it to our ranges and seeing if it falls within any of them. 87 87 - fn is_fresh(&self, ingredient: Ingredient) -> bool { 88 88 - self.ranges 89 89 - .iter() 90 90 - .any(|range| range.start.id <= ingredient.id && ingredient.id <= range.end.id) 91 91 - } 92 92 - 93 93 - // This function is called clean_ranges_stack bc i initially tried to do something else and it was a nightmare 94 94 - // Basically we initialize a list of RangeCaps, then sort them by value 95 95 - // Then we go through and push to the stack when we find a Start, pop when we find an End 96 96 - // If the end we find leaves our stack empty, we push a new range to our ranges vector 97 97 - // Finally, we replace the internal ranges of this IngredientDB with our new, optimized ranges. 98 98 - fn clean_ranges_stack(&mut self) { 99 99 - let mut range_list = Vec::<RangeCap>::new(); 100 100 - for range in &self.ranges { 101 101 - range_list.push(RangeCap::Start(range.start.id)); 102 102 - range_list.push(RangeCap::End(range.end.id)); 103 103 - } 104 104 - // Sort range list by Partial Ordering 105 105 - // this shouldn't fail or something's wrong 106 106 - range_list.sort_by(|a, b| { 107 107 - a.partial_cmp(b) 108 108 - .expect("RangeCaps should be able to be compared") 109 109 - }); 110 110 - 111 111 - // initialize our stack and output range vectors 112 112 - let mut range_stack = Vec::<u64>::new(); 113 113 - let mut new_ranges = Vec::<IngredientRange>::new(); 114 114 - 115 115 - for range in &range_list { 116 116 - match *range { 117 117 - // always push Starts to the stack 118 118 - RangeCap::Start(id) => range_stack.push(id), 119 119 - RangeCap::End(id) => { 120 120 - // if stack has more than 1 element, pop the top and discard 121 121 - // otherwise construct an IngredientRange with the final element and push it to the new_ranges vector 122 122 - if range_stack.len() > 1 { 123 123 - range_stack.pop(); 124 124 - } else { 125 125 - new_ranges.push(IngredientRange { 126 126 - start: Ingredient { 127 127 - id: range_stack.pop().unwrap(), 128 128 - }, 129 129 - end: Ingredient { id }, 130 130 - }); 131 131 - } 132 132 - } 133 133 - } 134 134 - } 135 135 - 136 136 - self.ranges = new_ranges; 137 137 - } 138 138 - 139 139 - // Simple math function that subtracts ends of all the ranges from the starts and adds 1 to be **inclusive** 140 140 - fn count_fresh(&self) -> u64 { 141 141 - let mut fresh_count = 0u64; 142 142 - for range in &self.ranges { 143 143 - fresh_count += range.end.id.saturating_sub(range.start.id) + 1; 144 144 - } 145 145 - fresh_count 146 146 - } 147 147 - } 148 148 - 149 149 - impl Debug for IngredientRange { 150 150 - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { 151 151 - write!( 152 152 - f, 153 153 - "IngredientRange {{ \n\t[{}-{}] of length {}\n }}", 154 154 - self.start.id, 155 155 - self.end.id, 156 156 - self.end.id.saturating_sub(self.start.id) + 1 157 157 - ) 158 158 - } 159 159 - } 160 160 - 161 161 - impl Debug for IngredientDB { 162 162 - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { 163 163 - write!(f, "IngredientDB {{ ranges: {:?} }}", self.ranges) 164 164 - } 165 165 - } 166 166 - 167 167 - fn main() { 168 168 - let in_file = fs::read_to_string("input.txt").expect("Failed to read file"); 169 169 - 170 170 - // Split our input file into two parts based on newlines and make sure there are exactly 2 parts 171 171 - let file_sections = in_file.split("\n\n").collect::<Vec<&str>>(); 172 172 - assert!(file_sections.len() == 2); 173 173 - 174 174 - // Parse first part of the file and initialize an IngredientDB 175 175 - let mut ingredient_db = IngredientDB::new(file_sections[0]); 176 176 - 177 177 - // before range cleanup 178 178 - // println!("Ingredient Database: {:?}", ingredient_db); 179 179 - // cleaning our ranges up here gives us better performance for the first part! since there are less ranges to check in. 180 180 - ingredient_db.clean_ranges_stack(); 181 181 - // after range cleanup 182 182 - // println!("Ingredient Database: {:?}", ingredient_db); 183 183 - 184 184 - // to get our first star, we check each ingredient in the second section against our initialized DB and increment fresh_count 185 185 - let mut fresh_count = 0u64; 186 186 - for test_ingredient in file_sections[1].lines() { 187 187 - if ingredient_db.is_fresh(Ingredient { 188 188 - id: test_ingredient 189 189 - .parse() 190 190 - .expect("Failed to parse ingredient ID"), 191 191 - }) { 192 192 - fresh_count += 1; 193 193 - } 194 194 - } 195 195 - 196 196 - println!("Fresh Ingredients in Pantry: {}", fresh_count); 197 197 - println!( 198 198 - "Fresh Ingredients in Database: {}", 199 199 - ingredient_db.count_fresh() 200 200 - ); 201 201 - }

-11

day5/testinput.txt

··· 1 1 - 1-4 2 2 - 4-6 3 3 - 6-100 4 4 - 10-50 5 5 - 6 6 - 1 7 7 - 5 8 8 - 8 9 9 - 11 10 10 - 17 11 11 - 32

-7

day6/Cargo.lock

··· 1 1 - # This file is automatically @generated by Cargo. 2 2 - # It is not intended for manual editing. 3 3 - version = 4 4 4 - 5 5 - [[package]] 6 6 - name = "day6" 7 7 - version = "0.1.0"

-6

day6/Cargo.toml

··· 1 1 - [package] 2 2 - name = "day6" 3 3 - version = "0.1.0" 4 4 - edition = "2024" 5 5 - 6 6 - [dependencies]

-5

day6/input.txt

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-4

day6/smallinput.txt

··· 1 1 - 123 328 51 64 2 2 - 45 64 387 23 3 3 - 6 98 215 314 4 4 - * + * +

-75

day6/src/main.rs

··· 1 1 - use std::fmt::Debug; 2 2 - use std::fs; 3 3 - 4 4 - mod parser; 5 5 - // what if signed but did, punch card then? 6 6 - // 7 7 - enum MathProblem { 8 8 - Sum(Vec<u64>), 9 9 - Mult(Vec<u64>), 10 10 - } 11 11 - 12 12 - impl Debug for MathProblem { 13 13 - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { 14 14 - match self { 15 15 - MathProblem::Sum(nums) => write!(f, "Sum({:?})", nums), 16 16 - MathProblem::Mult(nums) => write!(f, "Mult({:?})", nums), 17 17 - } 18 18 - } 19 19 - } 20 20 - 21 21 - impl MathProblem { 22 22 - fn new(mut nums: Vec<String>) -> MathProblem { 23 23 - println!("nums: {:?}", nums); 24 24 - //let mut mynums = nums.clone(); 25 25 - let operator: char = nums 26 26 - .pop() 27 27 - .expect("Unable to get final char from vector.") 28 28 - .chars() 29 29 - .next() 30 30 - .expect("Operator could not be parsed."); 31 31 - let values: Vec<u64> = nums.iter().map(|num| num.parse().unwrap()).collect(); 32 32 - match operator { 33 33 - '+' => MathProblem::Sum(values), 34 34 - '*' => MathProblem::Mult(values), 35 35 - _ => panic!("Invalid operator"), 36 36 - } 37 37 - } 38 38 - 39 39 - fn solve(&self) -> u64 { 40 40 - match self { 41 41 - MathProblem::Sum(nums) => nums.iter().sum(), 42 42 - MathProblem::Mult(nums) => nums.iter().product(), 43 43 - } 44 44 - } 45 45 - } 46 46 - 47 47 - fn main() { 48 48 - let input = fs::read_to_string("input.txt").expect("Unable to read input file"); 49 49 - 50 50 - // Go line by line through input and split each line by whitespace 51 51 - // create a Vector of Vectors that store each column 52 52 - /* let mut columns: Vec<Vec<&str>> = Vec::new(); 53 53 - 54 54 - for line in input.lines() { 55 55 - for (index, word) in line.split_whitespace().enumerate() { 56 56 - if index < columns.len() { 57 57 - columns[index].push(word); 58 58 - } else { 59 59 - columns.push(vec![word]); 60 60 - } 61 61 - } 62 62 - } */ 63 63 - 64 64 - let problems = parser::parse_columns(&input); 65 65 - 66 66 - let mut solutions: Vec<u64> = Vec::new(); 67 67 - for problem in problems { 68 68 - // let math_problem = MathProblem::new(&mut problem); 69 69 - let solution = problem.solve(); 70 70 - solutions.push(solution); 71 71 - println!("{:?} = {}", problem, solution); 72 72 - } 73 73 - 74 74 - println!("Grand total of {:?}", solutions.iter().sum::<u64>()); 75 75 - }

-76

day6/src/parser.rs

··· 1 1 - use crate::MathProblem; 2 2 - 3 3 - // how to read cephalopod grid: 4 4 - // 5 5 - // let Vec<Equations> 6 6 - // convert string -> lines, convert lines to Vec(chars) 7 7 - // let number = Vec<char> 8 8 - // for column in line.len -> 0 ; for row in lines.len : 9 9 - // if grid[row][col].parse() : 10 10 - // 11 11 - 12 12 - fn normalize_rows(char_grid: Vec<Vec<char>>) -> Vec<Vec<char>> { 13 13 - let max_row = char_grid.iter().map(|row| row.len()).max().unwrap_or(0); 14 14 - char_grid 15 15 - .into_iter() 16 16 - .map(|mut row| { 17 17 - row.resize(max_row, ' '); 18 18 - row 19 19 - }) 20 20 - .collect() 21 21 - } 22 22 - 23 23 - pub fn parse_columns(input: &str) -> Vec<MathProblem> { 24 24 - let mut problems = Vec::new(); 25 25 - // parse input into 2d array of chars 26 26 - let char_grid: Vec<Vec<char>> = input.lines().map(|line| line.chars().collect()).collect(); 27 27 - let char_grid = normalize_rows(char_grid); 28 28 - 29 29 - println!("char_grid: {:?}", char_grid); 30 30 - 31 31 - let mut cur_problem = Vec::<String>::new(); 32 32 - // Flag for whether we should skip this col 33 33 - let mut skip_col = false; 34 34 - 35 35 - for col in 0..char_grid[0].len() { 36 36 - if skip_col { 37 37 - skip_col = false; 38 38 - continue; 39 39 - } 40 40 - let rcol = char_grid[0].len() - col - 1; 41 41 - let mut num_chars = Vec::<char>::new(); 42 42 - let mut found_operator = false; 43 43 - let p: String; 44 44 - 45 45 - for row in 0..char_grid.len() { 46 46 - if char_grid[row][rcol] == ' ' { 47 47 - continue; 48 48 - } 49 49 - num_chars.push(char_grid[row][rcol]); 50 50 - println!("num_chars: {:?}", num_chars); 51 51 - if char_grid[row][rcol] == '*' || char_grid[row][rcol] == '+' { 52 52 - found_operator = true; 53 53 - } 54 54 - } 55 55 - if !found_operator { 56 56 - // Surely there is a better way to do this repeated bit 57 57 - p = num_chars.iter().collect::<String>(); // } 58 58 - let parsed_problem = p.trim().to_string(); //} 59 59 - cur_problem.push(parsed_problem); // } 60 60 - } else { 61 61 - let operator = num_chars.pop().unwrap(); 62 62 - 63 63 - p = num_chars.iter().collect::<String>(); // } 64 64 - let parsed_problem = p.trim().to_string(); //} 65 65 - cur_problem.push(parsed_problem); // } 66 66 - 67 67 - cur_problem.push(operator.to_string()); 68 68 - println!("cur_problem: {:?}", cur_problem); 69 69 - let math_problem = MathProblem::new(cur_problem); 70 70 - problems.push(math_problem); 71 71 - cur_problem = Vec::new(); 72 72 - skip_col = true; 73 73 - } 74 74 - } 75 75 - problems 76 76 - }

-7

day7/Cargo.lock

··· 1 1 - # This file is automatically @generated by Cargo. 2 2 - # It is not intended for manual editing. 3 3 - version = 4 4 4 - 5 5 - [[package]] 6 6 - name = "day7" 7 7 - version = "0.1.0"

-6

day7/Cargo.toml

··· 1 1 - [package] 2 2 - name = "day7" 3 3 - version = "0.1.0" 4 4 - edition = "2024" 5 5 - 6 6 - [dependencies]

-142

day7/input.txt

··· 1 1 - ......................................................................S...................................................................... 2 2 - ............................................................................................................................................. 3 3 - ......................................................................^...................................................................... 4 4 - ............................................................................................................................................. 5 5 - .....................................................................^.^..................................................................... 6 6 - ............................................................................................................................................. 7 7 - ....................................................................^...^.................................................................... 8 8 - ............................................................................................................................................. 9 9 - ...................................................................^.^...^................................................................... 10 10 - ............................................................................................................................................. 11 11 - ..................................................................^...^...^.................................................................. 12 12 - ............................................................................................................................................. 13 13 - .................................................................^.....^.^.^................................................................. 14 14 - ............................................................................................................................................. 15 15 - ................................................................^.^.^.^...^.^................................................................ 16 16 - ............................................................................................................................................. 17 17 - ...............................................................^.^.^.^.^.....^............................................................... 18 18 - ............................................................................................................................................. 19 19 - ..............................................................^.^.^.^.....^.^.^.............................................................. 20 20 - ............................................................................................................................................. 21 21 - .............................................................^.^...^...^.^...^.^............................................................. 22 22 - 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...............^.....^.^...^.^.^.^.^...^.........^...^.^.^.^...^.^.^.^.^...^...^.^.^.^...^.^.^.^.^.^.^...^.^.....^.^.^.^.^.^.^............... 114 114 - ............................................................................................................................................. 115 115 - ..............^.^.^...^...^.^.^.^.^.^.^.^.^.^.^.^.^.^.....^.^.....^.^.^.^.^...^.^.^.^.^.^.^.^...^.^.^.^.^.^.^.^...^...^...^.^.^.............. 116 116 - ............................................................................................................................................. 117 117 - .............^.^.^.^.....^.^.^...^.....^.^.^.......^...^.^.^.^.^.^.^.^.^.^.^.^.^.^.....^.^.^...^...^.^.......^...^...^.^.^...^.^............. 118 118 - ............................................................................................................................................. 119 119 - ............^.^.^.....^.^.^.^.^...^.^.^...^.^...^.^.^.^.^.....^.^...^.^.^.^...^.......^...^...^.^.^.^.^...^.^.^.^.^.^.^.^.^...^.^............ 120 120 - ............................................................................................................................................. 121 121 - ...........^.^...^.^...^.^.^...^.^.^.^.^.^.....^...^.^.....^...^...^.^.^.^...^.^.^.^.^...^.....^...^.^...^.....^.....^...^...^.^.^........... 122 122 - ............................................................................................................................................. 123 123 - ..........^.^.^.^.^.......^.....^...^...^...^...^...^.....^.^.^.^.^.....^.^...^.^.^.^.^.....^.^...^.^.^.^.....^.^.^.^.^.^...^...^.^.......... 124 124 - ............................................................................................................................................. 125 125 - .........^.^.^...^.^.^.^.^.^.^.^.^.........^.^...^...^.....^.^.^.^.^.^.^.^.^.......^.^.^.^.^.^...^...^.^...^.^.^.^.^.^...^.^.^...^.^......... 126 126 - ............................................................................................................................................. 127 127 - ........^.^.....^.^.^.....^.^.^...^.^...^.^.^.....^...^.^.^...^.^.^.^.^.^.....^.....^.^.^.^...^.^...^.^.....^.....^...^.^.....^.^...^........ 128 128 - ............................................................................................................................................. 129 129 - .......^...^.^.......^.^...^.^...^.^...^.....^.^.^.^.^.^.^.^...^.^.^...^...^.^.^.^.^...^...^...^.^.^...^.^...^.^.^.^.^.^.^.^.^...^.^.^....... 130 130 - ............................................................................................................................................. 131 131 - ......^.......^.....^...^...^.^.....^.^...^.....^.^.^.^.^.^...^...^...^.^...^...^.........^.^...^.......^.^.^.^...^.....^.^.^.^.....^.^...... 132 132 - ............................................................................................................................................. 133 133 - .....^.^...^.^.^.....^...^.^...^.^...^.^.^.^.^.^.^.^.^.....^...^.......^.....^.^.^...^...^.^.^...^.^.^.......^.^.^.^...^...^.^.^.^.^.^.^..... 134 134 - ............................................................................................................................................. 135 135 - ....^.^.^.....^.^.^.^.^.^.^.....^.^.^.^.....^...^.........^.^.........^.^.^.^.^.^.^...^.^.^.^...^.^.^...^.^.^.....^...^.......^.^.^.^...^.... 136 136 - ............................................................................................................................................. 137 137 - ...^.^.....^.^...^.^.^.^.^.^.^.....^.^.......^...^...^...^.^...^...^.^.^.^.^.^.^.^...^.^.^.^.^...^.^.^.^.....^.^.^.^.^.^.^.^.^.^.^...^...^... 138 138 - ............................................................................................................................................. 139 139 - ..^.^.^.^...^...^.......^...^.^...^.^.....^...^.^.^...^...^.....^...^.....^.^.^.^.^...^.^.^.^.^.^.^.^...^.^.^.^.^.^.^.^...^.^.....^.^...^.^.. 140 140 - ............................................................................................................................................. 141 141 - .^.^.^.....^.........^.^.......^.^.^.^...^.^.^.^.........^.^.^.......^.^.......^.^.^.^.^.^.^...^...^...^.^.^...^.^.^.....^.^.^...^.^.^.^.^.^. 142 142 - .............................................................................................................................................

-16

day7/smallinput.txt

··· 1 1 - .......S....... 2 2 - ............... 3 3 - .......^....... 4 4 - ............... 5 5 - ......^.^...... 6 6 - ............... 7 7 - .....^.^.^..... 8 8 - ............... 9 9 - ....^.^...^.... 10 10 - ............... 11 11 - ...^.^...^.^... 12 12 - ............... 13 13 - ..^...^.....^.. 14 14 - ............... 15 15 - .^.^.^.^.^...^. 16 16 - ...............

-173

day7/src/main.rs

··· 1 1 - use std::collections::VecDeque; 2 2 - use std::fmt::Debug; 3 3 - use std::fs; 4 4 - 5 5 - struct TachyonManifold { 6 6 - data: Vec<Vec<char>>, 7 7 - height: usize, 8 8 - width: usize, 9 9 - } 10 10 - 11 11 - impl TachyonManifold { 12 12 - fn new(input: String) -> Self { 13 13 - let data: Vec<Vec<char>> = input.lines().map(|line| line.chars().collect()).collect(); 14 14 - let height = data.len(); 15 15 - let width = data[0].len(); 16 16 - Self { 17 17 - data, 18 18 - height, 19 19 - width, 20 20 - } 21 21 - } 22 22 - 23 23 - fn propagate_beam(&mut self, row: usize) -> u32 { 24 24 - let mut split_count = 0u32; 25 25 - let row_data = self.data[row].clone(); 26 26 - 27 27 - // THIS ANNOYINGLY CONTAINS AN IMMUTABLE BORROW for self.data[row] 28 28 - // SO IT BREAKS ALL MY MUTABLE REFERENCES. 29 29 - // THIS IS WHY THERE IS ALL THE CLONE()ING 30 30 - for (index, c) in row_data.iter().enumerate() { 31 31 - match c { 32 32 - 'S' | '|' => { 33 33 - if self.data[row + 1][index] == '.' { 34 34 - self.data[row + 1][index] = '|' 35 35 - } 36 36 - } 37 37 - '^' => { 38 38 - if self.data[row.saturating_sub(1)][index] == '|' { 39 39 - self.data[row][index + 1] = '|'; 40 40 - self.data[row][index.saturating_sub(1)] = '|'; 41 41 - split_count += 1; 42 42 - } 43 43 - } 44 44 - _ => continue, 45 45 - } 46 46 - } 47 47 - 48 48 - // ANNOYINGLY HAVE TO RE-CLONE DATA BC CANT FIGURE OUT HOW TO EDIT IN PLACE 49 49 - let row_data = self.data[row].clone(); 50 50 - 51 51 - for (index, c) in row_data.iter().enumerate() { 52 52 - match c { 53 53 - '|' => { 54 54 - if self.data[row + 1][index] == '.' { 55 55 - self.data[row + 1][index] = '|' 56 56 - } 57 57 - } 58 58 - _ => continue, 59 59 - } 60 60 - } 61 61 - split_count 62 62 - } 63 63 - } 64 64 - 65 65 - // NEW PLAN OKAY SO BASICALLY WE CAN PUSH EACH ROW/COL TO A STACK AND SEE IF IT HAS A LINE OF SIGHT TO THE BOTTOM, IF IT ENCOUNTERS A ^ WE PUSH TWO MORE, IF IT REACHES THE BOTTOM, WE POP 66 66 - 67 67 - impl TachyonManifold { 68 68 - fn ez_quantum(&mut self, row: usize) -> u64 { 69 69 - let mut path_stack = Vec::<QuantumSplit>::new(); 70 70 - let mut timelines = Vec::<Vec<QuantumSplit>>::new(); 71 71 - let mut cur_timeline = Vec::<QuantumSplit>::new(); 72 72 - // let mut success_paths = 0; 73 73 - // initialize two paths from starting node 74 74 - let start_col = self.data[row] 75 75 - .iter() 76 76 - .position(|c| *c == '^') 77 77 - .expect("No starting split found"); 78 78 - println!("Start column: {}", start_col); 79 79 - path_stack.push(QuantumSplit::Left(row, start_col.saturating_sub(1))); 80 80 - path_stack.push(QuantumSplit::Right(row, start_col.saturating_add(1))); 81 81 - 82 82 - while let Some(cur_path) = path_stack.pop() { 83 83 - //println!("Path stack: {:?}", path_stack); 84 84 - // Save the path we take 85 85 - match cur_path { 86 86 - QuantumSplit::Left(cur_row, cur_col) | QuantumSplit::Right(cur_row, cur_col) => { 87 87 - for row_index in cur_row..self.height { 88 88 - cur_timeline.push(cur_path.clone()); 89 89 - if row_index == self.height - 1 { 90 90 - // save the full path 91 91 - timelines.push(cur_timeline.clone()); 92 92 - cur_timeline.clear(); 93 93 - // success_paths += 1; 94 94 - // println!("Found {} paths", success_paths); 95 95 - // println!("Cur_path = {:?}", cur_path); 96 96 - // println!("Stack = {:?}", path_stack); 97 97 - // println!("Found {} paths", success_paths); 98 98 - } else if self.data[row_index][cur_col] == '^' { 99 99 - path_stack 100 100 - .push(QuantumSplit::Left(row_index, cur_col.saturating_sub(1))); 101 101 - path_stack 102 102 - .push(QuantumSplit::Right(row_index, cur_col.saturating_add(1))); 103 103 - self.data[row_index][cur_col] = 'x'; 104 104 - break; 105 105 - } else if self.data[row_index][cur_col] == 'x' { 106 106 - break; 107 107 - } else { 108 108 - self.data[row_index][cur_col] = '|'; 109 109 - } 110 110 - } 111 111 - println!("Data: {:?}", self); 112 112 - } 113 113 - } 114 114 - } 115 115 - 116 116 - println!("Explored map: {:?}", self); 117 117 - //println!("Timelines: {:?}", timelines); 118 118 - 119 119 - timelines.len() as u64 120 120 - } 121 121 - } 122 122 - 123 123 - // Quantum propagation thoughts 124 124 - // looks like a tree structure 125 125 - // every time we find a split, could push a new Tachyon Manifold onto the stack 126 126 - // --- Wait okay its one beam 127 127 - // so really we just need to store a stack of L/R decisions that represent 128 128 - // a map of outcomes 129 129 - // problem is... how do we distinguish whether tachyons path was unique? 130 130 - // save every path taken as a a string & convert to a set? 131 131 - // or are they just guaranteed unique structurally 132 132 - 133 133 - // Okay so quantum split will represent each time we encounter a ^ traversing the file 134 134 - #[derive(Debug, Clone)] 135 135 - enum QuantumSplit { 136 136 - Left(usize, usize), 137 137 - Right(usize, usize), 138 138 - } 139 139 - 140 140 - impl Debug for TachyonManifold { 141 141 - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { 142 142 - writeln!( 143 143 - f, 144 144 - "TachyonManifold of size {}, {} {{", 145 145 - self.width, self.height 146 146 - )?; 147 147 - for row in &self.data { 148 148 - for &cell in row { 149 149 - write!(f, "{}", cell)?; 150 150 - } 151 151 - writeln!(f)?; 152 152 - } 153 153 - writeln!(f, "}}")?; 154 154 - Ok(()) 155 155 - } 156 156 - } 157 157 - 158 158 - fn main() { 159 159 - let mut manifold = TachyonManifold::new(fs::read_to_string("smallinput.txt").unwrap()); 160 160 - 161 161 - // let mut splits = 0u32; 162 162 - // for row in 0..manifold.height - 1 { 163 163 - // splits += manifold.propagate_beam(row); 164 164 - // // println!("{:?}", manifold); 165 165 - // } 166 166 - 167 167 - // Weird observation: for the small example provided 168 168 - // answer for total number of paths == the number of beams 169 169 - let beam_count = manifold.ez_quantum(2); 170 170 - 171 171 - // println!("Beam split {} times.", splits); 172 172 - println!("Total possible paths: {}", beam_count); 173 173 - }

-5

day7/tinyinput.txt

··· 1 1 - ..S.. 2 2 - ..... 3 3 - ..^.. 4 4 - ..... 5 5 - .....

-160

day8/Cargo.lock

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-8

day8/Cargo.toml

··· 1 1 - [package] 2 2 - name = "day8" 3 3 - version = "0.1.0" 4 4 - edition = "2024" 5 5 - 6 6 - [dependencies] 7 7 - itertools = "0.14.0" 8 8 - memoize = "0.5.1"

-1000

day8/input.txt

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99398,21140,89310 669 669 - 90,28676,90243 670 670 - 29807,48880,75576 671 671 - 81248,1204,67781 672 672 - 65225,81737,30811 673 673 - 25009,48667,7012 674 674 - 36993,52547,8688 675 675 - 96801,44164,79301 676 676 - 24135,84236,23458 677 677 - 67772,66369,79511 678 678 - 67528,32674,94977 679 679 - 10091,96314,65889 680 680 - 15692,54488,71538 681 681 - 28509,36103,48177 682 682 - 24258,48789,42369 683 683 - 61376,51916,31147 684 684 - 50379,90292,50272 685 685 - 2829,99043,39990 686 686 - 19256,13686,32276 687 687 - 39955,29729,43262 688 688 - 4266,37350,96303 689 689 - 35795,73728,80140 690 690 - 57387,76074,74442 691 691 - 87942,81677,80696 692 692 - 48628,25661,66142 693 693 - 23961,57266,39363 694 694 - 56281,54557,77330 695 695 - 89220,49213,17587 696 696 - 14139,56950,54071 697 697 - 51225,90598,9442 698 698 - 4409,23288,81221 699 699 - 43006,92371,50606 700 700 - 83632,98998,24260 701 701 - 64020,24024,48960 702 702 - 58588,49887,75107 703 703 - 71493,58974,91616 704 704 - 88788,42046,79955 705 705 - 23453,63618,96825 706 706 - 60555,85327,45468 707 707 - 12062,60881,69495 708 708 - 4481,16536,75882 709 709 - 84131,11680,68283 710 710 - 58453,29183,13532 711 711 - 22967,94147,8442 712 712 - 44823,81798,80863 713 713 - 57702,41393,69096 714 714 - 69772,90611,90380 715 715 - 74332,35786,85552 716 716 - 51586,29470,35783 717 717 - 13029,78458,41054 718 718 - 26126,33214,78990 719 719 - 76931,94565,47623 720 720 - 67734,21896,89140 721 721 - 32614,41279,74714 722 722 - 23055,1233,46240 723 723 - 3618,1545,64772 724 724 - 25323,8905,57622 725 725 - 97567,11783,43123 726 726 - 2464,30255,68387 727 727 - 71325,51477,73569 728 728 - 71119,46232,58668 729 729 - 12128,84037,18246 730 730 - 67619,10724,13825 731 731 - 60396,79248,83229 732 732 - 26633,69182,80938 733 733 - 92728,25144,35827 734 734 - 90453,87466,97937 735 735 - 68038,32690,29917 736 736 - 51472,58402,93704 737 737 - 37641,2857,70409 738 738 - 8707,88320,42363 739 739 - 13820,40220,19400 740 740 - 8898,80488,35258 741 741 - 8103,14748,1721 742 742 - 73327,45549,90563 743 743 - 83271,33044,95175 744 744 - 50544,80889,5749 745 745 - 82013,73979,3638 746 746 - 51557,11698,26489 747 747 - 94279,75035,59998 748 748 - 53457,38779,48695 749 749 - 52897,53696,58133 750 750 - 52455,63415,94369 751 751 - 88006,34784,81714 752 752 - 21248,28234,59140 753 753 - 99868,90640,63581 754 754 - 39460,79896,41473 755 755 - 8024,16605,14067 756 756 - 18805,38463,92672 757 757 - 12729,38981,43996 758 758 - 84016,53645,47435 759 759 - 43332,88246,21453 760 760 - 57091,56350,12573 761 761 - 94650,80014,59801 762 762 - 5724,74670,61762 763 763 - 43771,2614,92057 764 764 - 41034,41960,5920 765 765 - 48180,67061,48295 766 766 - 59802,96719,91668 767 767 - 82350,63241,90078 768 768 - 13297,36984,61190 769 769 - 7586,18302,43043 770 770 - 23736,89593,55066 771 771 - 53943,54312,58012 772 772 - 11217,74922,56027 773 773 - 57104,98807,2160 774 774 - 73751,85487,99503 775 775 - 61169,32506,61992 776 776 - 77636,34540,19030 777 777 - 14276,36863,89733 778 778 - 32546,53962,12669 779 779 - 78925,37411,98550 780 780 - 52204,6602,29527 781 781 - 75581,12110,95415 782 782 - 20501,44750,88808 783 783 - 26724,9079,59085 784 784 - 2017,65960,54512 785 785 - 56245,56320,82717 786 786 - 67262,88827,66007 787 787 - 46002,60637,20815 788 788 - 10934,72795,54271 789 789 - 2284,95037,65832 790 790 - 24170,92018,60890 791 791 - 28849,61756,97149 792 792 - 13003,55368,38859 793 793 - 99221,66749,63207 794 794 - 80231,86432,57873 795 795 - 68911,68316,75250 796 796 - 31330,73067,19275 797 797 - 30317,41551,28447 798 798 - 37433,55769,31202 799 799 - 98208,84114,27259 800 800 - 20368,11562,46405 801 801 - 12464,66037,79359 802 802 - 79788,50931,66537 803 803 - 82868,86698,27768 804 804 - 60856,6657,32277 805 805 - 77524,77176,98128 806 806 - 68053,94965,63859 807 807 - 99440,63447,4920 808 808 - 66905,3239,15512 809 809 - 70937,92111,55957 810 810 - 76870,64259,38353 811 811 - 52990,70023,3119 812 812 - 5225,3407,29003 813 813 - 35535,47349,60468 814 814 - 64419,24598,66841 815 815 - 23124,99377,97306 816 816 - 41445,75960,87312 817 817 - 29,79614,96488 818 818 - 40757,24706,65304 819 819 - 72871,66262,9428 820 820 - 8394,28591,85564 821 821 - 99624,94585,87333 822 822 - 98579,76963,38444 823 823 - 58722,8508,12293 824 824 - 81151,18126,33208 825 825 - 87470,50769,59442 826 826 - 96916,14421,66709 827 827 - 43954,60341,84693 828 828 - 35019,59265,60115 829 829 - 30657,49485,56286 830 830 - 96809,12172,1939 831 831 - 97949,17093,47327 832 832 - 40195,1945,37915 833 833 - 37707,75241,8103 834 834 - 37706,48368,20374 835 835 - 4197,10480,76888 836 836 - 26822,96992,12337 837 837 - 80447,23191,41378 838 838 - 71437,33537,56879 839 839 - 46330,94668,51855 840 840 - 43250,79419,76879 841 841 - 86245,91089,26584 842 842 - 61134,62077,1966 843 843 - 28531,67265,6522 844 844 - 6519,59360,40573 845 845 - 26669,38116,72146 846 846 - 65382,26810,34544 847 847 - 84589,89836,36848 848 848 - 52902,53791,52146 849 849 - 45450,28077,20204 850 850 - 25505,22489,68073 851 851 - 28347,83143,83558 852 852 - 72191,36483,58030 853 853 - 4292,63221,53866 854 854 - 48323,69907,20127 855 855 - 25932,22001,33483 856 856 - 81436,72789,57465 857 857 - 19012,5056,61362 858 858 - 34218,8154,31347 859 859 - 7344,54825,84905 860 860 - 12109,99815,39856 861 861 - 24152,67907,72880 862 862 - 27793,18546,94859 863 863 - 7984,26267,65461 864 864 - 4363,95039,76444 865 865 - 30253,85781,56038 866 866 - 93793,64059,93430 867 867 - 1886,53564,60321 868 868 - 81174,51044,73504 869 869 - 62489,17019,50553 870 870 - 67975,90669,77617 871 871 - 40710,39406,67989 872 872 - 88338,99227,91857 873 873 - 11793,52390,21732 874 874 - 51394,86298,57668 875 875 - 82827,31001,85106 876 876 - 68945,7310,72003 877 877 - 32832,92145,81580 878 878 - 72561,47918,14264 879 879 - 77209,55782,38313 880 880 - 81882,74282,21704 881 881 - 51882,97992,4609 882 882 - 58414,62933,77634 883 883 - 74312,98169,34240 884 884 - 69635,51471,73543 885 885 - 95490,36491,4990 886 886 - 90933,43892,84379 887 887 - 22518,87577,618 888 888 - 48743,73323,65582 889 889 - 12912,87770,30423 890 890 - 7951,89917,16955 891 891 - 62338,48454,3983 892 892 - 78985,30506,48876 893 893 - 10980,79184,48083 894 894 - 19751,70704,11165 895 895 - 42018,41812,30011 896 896 - 48224,18037,19033 897 897 - 36265,81404,30697 898 898 - 52144,47177,13700 899 899 - 1202,24527,75444 900 900 - 61926,18825,39119 901 901 - 44256,66959,29756 902 902 - 88510,28243,67263 903 903 - 79817,52728,46347 904 904 - 74769,26651,74914 905 905 - 34106,4273,3111 906 906 - 5405,75942,55939 907 907 - 63583,27417,70584 908 908 - 63589,4017,29898 909 909 - 89537,84721,4102 910 910 - 23895,13525,818 911 911 - 55790,53172,84029 912 912 - 38866,83363,11556 913 913 - 24202,29687,55082 914 914 - 8936,70989,9152 915 915 - 66113,18369,22573 916 916 - 99947,59441,18839 917 917 - 15584,40548,56886 918 918 - 90436,50356,40214 919 919 - 12949,5437,99903 920 920 - 6281,32050,95178 921 921 - 41699,7694,41378 922 922 - 91671,76830,19559 923 923 - 9037,703,91104 924 924 - 95575,20178,12207 925 925 - 16587,15919,39864 926 926 - 25887,57324,68406 927 927 - 38003,72567,94216 928 928 - 98374,14196,16610 929 929 - 96037,96469,15450 930 930 - 42172,21383,25053 931 931 - 65489,43459,58549 932 932 - 55167,93789,18431 933 933 - 24299,58888,96156 934 934 - 11592,53658,82665 935 935 - 94871,87397,12483 936 936 - 29741,67002,26247 937 937 - 97997,29261,86131 938 938 - 26280,68495,77815 939 939 - 81429,33879,21139 940 940 - 9883,94136,48573 941 941 - 35894,24232,32571 942 942 - 99011,22571,71267 943 943 - 83721,35405,11897 944 944 - 84549,38496,29522 945 945 - 95788,96526,4885 946 946 - 79482,4993,18558 947 947 - 90375,35563,80001 948 948 - 45078,23672,61548 949 949 - 42661,94039,93503 950 950 - 29443,67800,55104 951 951 - 16420,83111,26200 952 952 - 44472,8892,57488 953 953 - 77004,34773,14770 954 954 - 96651,91718,98062 955 955 - 92585,73388,18170 956 956 - 26637,31499,21405 957 957 - 99116,91302,71556 958 958 - 89067,61107,71902 959 959 - 4349,4714,49333 960 960 - 33985,82952,40223 961 961 - 37507,78245,64234 962 962 - 86585,19801,57907 963 963 - 38675,70025,20078 964 964 - 90999,63531,51959 965 965 - 6182,74516,38729 966 966 - 70705,73562,81522 967 967 - 37903,61353,35923 968 968 - 78917,9437,92655 969 969 - 44521,19185,18798 970 970 - 8870,20454,27947 971 971 - 1907,32815,13936 972 972 - 89352,42076,73494 973 973 - 81867,13827,89586 974 974 - 77616,30916,54473 975 975 - 65459,84941,71773 976 976 - 20495,75046,34869 977 977 - 30221,8259,56414 978 978 - 19924,41498,37072 979 979 - 89553,61208,41061 980 980 - 80420,39421,63422 981 981 - 52007,31570,25760 982 982 - 91218,47639,31055 983 983 - 40456,44680,47531 984 984 - 23147,36507,26039 985 985 - 42863,48030,16989 986 986 - 10813,68148,29634 987 987 - 66041,19018,63221 988 988 - 43483,8560,53867 989 989 - 3912,5046,83997 990 990 - 29896,44185,92195 991 991 - 54491,66018,47133 992 992 - 185,69933,7673 993 993 - 63693,69748,72610 994 994 - 71856,61515,94293 995 995 - 63352,24925,15005 996 996 - 77188,6522,39837 997 997 - 25301,59078,13114 998 998 - 59801,92038,55033 999 999 - 31242,179,85583 1000 1000 - 49267,82002,72084

-20

day8/smallinput.txt

··· 1 1 - 162,817,812 2 2 - 57,618,57 3 3 - 906,360,560 4 4 - 592,479,940 5 5 - 352,342,300 6 6 - 466,668,158 7 7 - 542,29,236 8 8 - 431,825,988 9 9 - 739,650,466 10 10 - 52,470,668 11 11 - 216,146,977 12 12 - 819,987,18 13 13 - 117,168,530 14 14 - 805,96,715 15 15 - 346,949,466 16 16 - 970,615,88 17 17 - 941,993,340 18 18 - 862,61,35 19 19 - 984,92,344 20 20 - 425,690,689

-23

day8/src/circuit.rs

··· 1 1 - use crate::Point; 2 2 - use std::fmt::Debug; 3 3 - 4 4 - #[derive(Clone, Hash, PartialEq, Eq)] 5 5 - pub struct Circuit { 6 6 - pub nodes: Vec<Point>, 7 7 - pub size: usize, 8 8 - } 9 9 - 10 10 - impl Circuit { 11 11 - pub fn contains_point(&self, point: &Point) -> bool { 12 12 - self.nodes.contains(point) 13 13 - } 14 14 - } 15 15 - impl Debug for Circuit { 16 16 - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { 17 17 - writeln!(f, "Circuit {{ "); 18 18 - for node in &self.nodes { 19 19 - writeln!(f, "{:?}, ", node)?; 20 20 - } 21 21 - writeln!(f, "size: {} }} ", self.size) 22 22 - } 23 23 - }

-164

day8/src/main.rs

··· 1 1 - use itertools::Itertools; 2 2 - use memoize::memoize; 3 3 - use std::{collections::HashMap, fmt::Debug}; 4 4 - mod circuit; 5 5 - use circuit::Circuit; 6 6 - 7 7 - #[derive(Debug, Clone, Hash, PartialEq, Eq, Copy, PartialOrd)] 8 8 - struct Point { 9 9 - x: u64, 10 10 - y: u64, 11 11 - z: u64, 12 12 - } 13 13 - 14 14 - impl Point { 15 15 - fn new(x: u64, y: u64, z: u64) -> Self { 16 16 - Point { x, y, z } 17 17 - } 18 18 - 19 19 - fn distance_to(&self, other: &Point) -> u32 { 20 20 - distance(*self, *other) 21 21 - } 22 22 - 23 23 - fn closest_neighbours(&self, points: &[Point]) -> Vec<u32> { 24 24 - points 25 25 - .iter() 26 26 - .map(|p| { 27 27 - if p != self { 28 28 - self.distance_to(p) 29 29 - } else { 30 30 - u32::MAX 31 31 - } 32 32 - }) 33 33 - .collect() 34 34 - } 35 35 - 36 36 - fn find_closest(&self, points: &[Point]) -> Option<Point> { 37 37 - points 38 38 - .iter() 39 39 - .min_by_key(|p| { 40 40 - if **p == *self { 41 41 - u32::MAX 42 42 - } else { 43 43 - self.distance_to(p) 44 44 - } 45 45 - }) 46 46 - .copied() 47 47 - } 48 48 - } 49 49 - 50 50 - #[memoize] 51 51 - fn distance(a: Point, b: Point) -> u32 { 52 52 - ((a.x as i64 - b.x as i64).pow(2) 53 53 - + (a.y as i64 - b.y as i64).pow(2) 54 54 - + (a.z as i64 - b.z as i64).pow(2)) 55 55 - .isqrt() as u32 56 56 - } 57 57 - 58 58 - fn main() { 59 59 - let input_file = std::fs::read_to_string("smallinput.txt").expect("Failed to read input file"); 60 60 - let points = input_file 61 61 - .lines() 62 62 - .map(|line| { 63 63 - let parts: Vec<&str> = line.split(',').collect(); 64 64 - Point::new( 65 65 - parts[0].parse().expect("Failed to parse x coordinate"), 66 66 - parts[1].parse().expect("Failed to parse y coordinate"), 67 67 - parts[2].parse().expect("Failed to parse z coordinate"), 68 68 - ) 69 69 - }) 70 70 - .collect::<Vec<Point>>(); 71 71 - 72 72 - // let mut circuits = Vec::new(); 73 73 - let mut jmap: HashMap<Point, usize> = HashMap::new(); 74 74 - for (id, p) in points.iter().enumerate() { 75 75 - jmap.insert(*p, id); 76 76 - } 77 77 - 78 78 - let point_pairs = points 79 79 - .iter() 80 80 - .enumerate() 81 81 - .flat_map(|(i, &p1)| { 82 82 - points.iter().enumerate().filter_map(move |(j, &p2)| { 83 83 - if i != j { 84 84 - let dist = p1.distance_to(&p2); 85 85 - Some((p1, p2)) 86 86 - } else { 87 87 - None 88 88 - } 89 89 - }) 90 90 - }) 91 91 - .collect::<Vec<(Point, Point)>>(); 92 92 - 93 93 - // deduplicate connections 94 94 - let mut closest_connections: Vec<(Point, Point)> = point_pairs 95 95 - .iter() 96 96 - .unique_by(|&&(p1, p2)| if p1 < p2 { (p1, p2) } else { (p2, p1) }) 97 97 - .copied() 98 98 - .collect(); 99 99 - 100 100 - // sort connections by distance 101 101 - closest_connections.sort_by(|a, b| distance(a.0, a.1).cmp(&distance(b.0, b.1))); 102 102 - // println!("Closest connections: {:?}", closest_connections); 103 103 - 104 104 - let mut n_connections = 10; 105 105 - 106 106 - // okay so basically my idea is we track how many times each size appears 107 107 - // will also save us the annoying calculation at the end in theory 108 108 - // if both circuits have sizes, 109 109 - let mut circuit_sizes: HashMap<usize, usize> = HashMap::new(); 110 110 - 111 111 - for (index, point_pair) in closest_connections.iter().enumerate() { 112 112 - if index >= n_connections { 113 113 - break; 114 114 - } 115 115 - 116 116 - // initialize circuit sizes for both points if they don't exist 117 117 - if circuit_sizes.contains_key(&jmap[&point_pair.0]) { 118 118 - circuit_sizes.insert(jmap[&point_pair.0], 1); 119 119 - } 120 120 - if circuit_sizes.contains_key(&jmap[&point_pair.1]) { 121 121 - circuit_sizes.insert(jmap[&point_pair.1], 1); 122 122 - } 123 123 - 124 124 - if jmap[&point_pair.0] == jmap[&point_pair.1] { 125 125 - println!( 126 126 - "Skipping connection between {:?} and {:?} as they are already connected in circuit {}", 127 127 - point_pair.0, point_pair.1, jmap[&point_pair.0] 128 128 - ); 129 129 - n_connections += 1; 130 130 - continue; 131 131 - } 132 132 - let size_0: usize = *circuit_sizes.get(&jmap[&point_pair.0]).unwrap_or(&0); 133 133 - let size_1: usize = *circuit_sizes.get(&jmap[&point_pair.1]).unwrap_or(&0); 134 134 - 135 135 - println!( 136 136 - "Connecting {:?} from circuit {} and {:?} in circuit {}", 137 137 - point_pair.1, jmap[&point_pair.1], point_pair.0, jmap[&point_pair.0] 138 138 - ); 139 139 - 140 140 - if size_0 > size_1 { 141 141 - jmap.insert(point_pair.0, jmap[&point_pair.1]); 142 142 - circuit_sizes.insert(size_0, circuit_sizes.get(&size_0).unwrap_or(&0) + 1); 143 143 - } else { 144 144 - jmap.insert(point_pair.1, jmap[&point_pair.0]); 145 145 - circuit_sizes.insert(size_1, circuit_sizes.get(&size_1).unwrap_or(&0) + 1); 146 146 - } 147 147 - 148 148 - println!("Circuit sizes: {:?}", circuit_sizes); 149 149 - } 150 150 - 151 151 - let mut circuit_groups = jmap 152 152 - .values() 153 153 - .fold(std::collections::HashMap::new(), |mut acc, &val| { 154 154 - *acc.entry(val).or_insert(0) += 1; 155 155 - acc 156 156 - }) 157 157 - .into_values() 158 158 - .sorted() 159 159 - .collect::<Vec<usize>>(); 160 160 - 161 161 - circuit_groups.reverse(); 162 162 - println!("Junction map: {:?}", jmap); 163 163 - println!("Circuit groups: {:?}", circuit_groups); 164 164 - }

-6

day8/toyinput.txt

··· 1 1 - 1,1,1 2 2 - 2,2,2 3 3 - 100,100,100 4 4 - 101,101,101 5 5 - 500,500,500 6 6 - 501,501,501

-202

day9/Cargo.lock

··· 1 1 - # This file is automatically @generated by Cargo. 2 2 - # It is not intended for manual editing. 3 3 - version = 4 4 4 - 5 5 - [[package]] 6 6 - name = "anstream" 7 7 - version = "0.6.21" 8 8 - source = "registry+https://github.com/rust-lang/crates.io-index" 9 9 - checksum = "43d5b281e737544384e969a5ccad3f1cdd24b48086a0fc1b2a5262a26b8f4f4a" 10 10 - dependencies = [ 11 11 - "anstyle", 12 12 - "anstyle-parse", 13 13 - "anstyle-query", 14 14 - "anstyle-wincon", 15 15 - "colorchoice", 16 16 - "is_terminal_polyfill", 17 17 - "utf8parse", 18 18 - ] 19 19 - 20 20 - [[package]] 21 21 - name = "anstyle" 22 22 - version = "1.0.13" 23 23 - source = "registry+https://github.com/rust-lang/crates.io-index" 24 24 - checksum = "5192cca8006f1fd4f7237516f40fa183bb07f8fbdfedaa0036de5ea9b0b45e78" 25 25 - 26 26 - [[package]] 27 27 - name = "anstyle-parse" 28 28 - version = "0.2.7" 29 29 - source = "registry+https://github.com/rust-lang/crates.io-index" 30 30 - checksum = "4e7644824f0aa2c7b9384579234ef10eb7efb6a0deb83f9630a49594dd9c15c2" 31 31 - 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-8

day9/Cargo.toml

··· 1 1 - [package] 2 2 - name = "day9" 3 3 - version = "0.1.0" 4 4 - edition = "2024" 5 5 - 6 6 - [dependencies] 7 7 - clap = { version = "4.5.53", features = ["derive"] } 8 8 - itertools = "0.14.0"

-496

day9/input.txt

··· 1 1 - 97819,50153 2 2 - 97819,51361 3 3 - 97695,51361 4 4 - 97695,52560 5 5 - 97478,52560 6 6 - 97478,53816 7 7 - 98081,53816 8 8 - 98081,54975 9 9 - 97418,54975 10 10 - 97418,56200 11 11 - 97473,56200 12 12 - 97473,57459 13 13 - 97673,57459 14 14 - 97673,58694 15 15 - 97628,58694 16 16 - 97628,59810 17 17 - 96976,59810 18 18 - 96976,60944 19 19 - 96485,60944 20 20 - 96485,62061 21 21 - 95974,62061 22 22 - 95974,63248 23 23 - 95748,63248 24 24 - 95748,64662 25 25 - 96214,64662 26 26 - 96214,65764 27 27 - 95642,65764 28 28 - 95642,66755 29 29 - 94801,66755 30 30 - 94801,67896 31 31 - 94390,67896 32 32 - 94390,69110 33 33 - 94141,69110 34 34 - 94141,70168 35 35 - 93526,70168 36 36 - 93526,71446 37 37 - 93369,71446 38 38 - 93369,72267 39 39 - 92298,72267 40 40 - 92298,73226 41 41 - 91531,73226 42 42 - 91531,74355 43 43 - 91073,74355 44 44 - 91073,75528 45 45 - 90666,75528 46 46 - 90666,76633 47 47 - 90131,76633 48 48 - 90131,77691 49 49 - 89515,77691 50 50 - 89515,78771 51 51 - 88919,78771 52 52 - 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-8

day9/smallinput.txt

··· 1 1 - 7,1 2 2 - 11,1 3 3 - 11,7 4 4 - 9,7 5 5 - 9,5 6 6 - 2,5 7 7 - 2,3 8 8 - 7,3

-55

day9/src/floortiles.rs

··· 1 1 - use itertools::Itertools; 2 2 - use std::fmt::Display; 3 3 - 4 4 - #[derive(Debug)] 5 5 - pub struct FloorTiles { 6 6 - pub red_tiles: Vec<(usize, usize)>, 7 7 - pub rows: usize, 8 8 - pub cols: usize, 9 9 - } 10 10 - 11 11 - impl FloorTiles { 12 12 - pub fn load(filename: &str) -> Self { 13 13 - println!("trying to read {}", filename); 14 14 - let contents = std::fs::read_to_string(filename).expect("unable to read file as string"); 15 15 - let red_tiles: Vec<(usize, usize)> = contents 16 16 - .lines() 17 17 - .map(|line| { 18 18 - line.split(',') 19 19 - .map(|num| num.parse().expect("Could not parse {num}")) 20 20 - .collect_tuple() 21 21 - .expect("Unable to parse tuple") 22 22 - }) 23 23 - .collect(); 24 24 - FloorTiles { 25 25 - rows: red_tiles.iter().fold(0, |a, b| a.max(b.0)) + 1, 26 26 - cols: red_tiles.iter().fold(0, |a, b| a.max(b.1)) + 1, 27 27 - red_tiles, 28 28 - } 29 29 - } 30 30 - 31 31 - fn build_grid(&self) -> Vec<Vec<char>> { 32 32 - let mut grid = vec![vec!['.'; self.rows + 1]; self.cols + 1]; 33 33 - for &(row, col) in &self.red_tiles { 34 34 - if row < self.rows && col < self.cols { 35 35 - grid[col][row] = '#'; 36 36 - } 37 37 - } 38 38 - grid 39 39 - } 40 40 - 41 41 - fn is_inside(&self, tile: (usize, usize)) -> bool { 42 42 - tile.0 < self.rows && tile.1 < self.cols 43 43 - } 44 44 - } 45 45 - 46 46 - impl Display for FloorTiles { 47 47 - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { 48 48 - let grid = self.build_grid(); 49 49 - writeln!(f)?; 50 50 - for row in grid { 51 51 - writeln!(f, "{}", row.iter().collect::<String>())?; 52 52 - } 53 53 - Ok(()) 54 54 - } 55 55 - }

-46

day9/src/main.rs

··· 1 1 - use clap::Parser; 2 2 - mod floortiles; 3 3 - mod rectangle; 4 4 - 5 5 - #[derive(Parser, Debug)] 6 6 - struct Args { 7 7 - #[clap(short, long)] 8 8 - file: String, 9 9 - #[clap(short, long)] 10 10 - debug: bool, 11 11 - } 12 12 - 13 13 - fn main() { 14 14 - let args = Args::parse(); 15 15 - 16 16 - let tiles = floortiles::FloorTiles::load(&args.file); 17 17 - 18 18 - let mut max_area = 0; 19 19 - for tilea in 0..tiles.red_tiles.len() { 20 20 - for tileb in tilea..tiles.red_tiles.len() { 21 21 - if tiles.red_tiles[tilea].0 == tiles.red_tiles[tileb].0 22 22 - || tiles.red_tiles[tilea].1 == tiles.red_tiles[tileb].1 23 23 - { 24 24 - continue; 25 25 - } 26 26 - let rect = rectangle::Rectangle::new(tiles.red_tiles[tilea], tiles.red_tiles[tileb]); 27 27 - if args.debug { 28 28 - println!( 29 29 - "Rectangle from {:?} to {:?} has area: {}", 30 30 - rect.corn_a, 31 31 - rect.corn_b, 32 32 - rect.area() 33 33 - ); 34 34 - } 35 35 - 36 36 - if rect.area() > max_area { 37 37 - max_area = rect.area(); 38 38 - } 39 39 - } 40 40 - } 41 41 - 42 42 - if args.debug { 43 43 - println!("Red Tile Locations: {}", tiles); 44 44 - } 45 45 - println!("Maximum Area: {}", max_area); 46 46 - }

-32

day9/src/rectangle.rs

··· 1 1 - pub struct Rectangle { 2 2 - pub corn_a: (usize, usize), 3 3 - pub corn_b: (usize, usize), 4 4 - pub width: usize, 5 5 - pub height: usize, 6 6 - } 7 7 - 8 8 - impl Rectangle { 9 9 - pub fn new(corn_a: (usize, usize), corn_b: (usize, usize)) -> Self { 10 10 - let width = corn_a 11 11 - .0 12 12 - .max(corn_b.0) 13 13 - .saturating_sub(corn_a.0.min(corn_b.0)) 14 14 - + 1; 15 15 - let height = corn_a 16 16 - .1 17 17 - .max(corn_b.1) 18 18 - .saturating_sub(corn_a.1.min(corn_b.1)) 19 19 - + 1; 20 20 - 21 21 - Self { 22 22 - corn_a, 23 23 - corn_b, 24 24 - width, 25 25 - height, 26 26 - } 27 27 - } 28 28 - 29 29 - pub fn area(&self) -> usize { 30 30 - self.width * self.height 31 31 - } 32 32 - }