Day 11

Cargo.toml

@@ -43,6 +43,10 @@ path = "src/day9/main.rs"
 name = "day10"
 path = "src/day10/main.rs"
 
+[[bin]]
+name = "day11"
+path = "src/day11/main.rs"
+
 
 [dependencies]
 anyhow = "1.0.100"

src/day11/act.txt

@@ -0,0 +1,604 @@
+zmg: vew ynx rdv kzq
+fho: drg
+qtg: bcp kzq
+nbp: fkn
+oaa: ulw zyf
+fyy: dwh vjr cdg miw
+rwj: kkt hdz irr ovu
+qoy: rao eev wzh wkc
+jzz: glp pwf fwp
+aqu: swy txo nqu mla
+yws: zxh fft
+rdd: zbw cqw
+hoo: bfn amg vyd dod ovp kii
+bnz: vdk
+shw: gzx
+iep: zbw
+mxl: udq owi yhh rrk
+izl: tfr
+oku: pvp
+omu: pvq tsj hfl
+xwc: bdu tuz tkz
+tjf: rek vil
+uak: bko
+idt: yrr
+que: yyb aqu cfl
+tmg: eev
+ybn: hfe qou xrk
+dgj: jbz you fhk hoo
+hfl: fmn gzw sug
+mix: gzx
+cwn: fhk you jbz
+rek: dfy ued zya nnk
+sug: utp btl lzb hor ndl uuw kyi zqd jdq cfs nvd acs pyx pbm eqc ome
+lan: kkt ovu irr
+miy: uub gyg yol tua
+dev: out
+ykn: fea rlv how ksp
+yom: fhk
+tcl: fnb
+nnk: hdz kkt
+wau: rtw vuk aoe
+amz: nxs vku
+nqy: fdp wyk
+bdj: hit ytb tcl
+bgd: uru mhm
+zdl: fps pmc maa frp
+wrv: sug cjl gzw fmn
+feh: irc ojk
+efc: out
+zst: rta knd
+nqi: gyt pwv
+snz: out
+fea: wqv hse rqw
+tqh: fea
+hho: isx whl yiz
+tkz: zkq
+omh: uuu
+dxu: dwh vjr sfc cdg miw
+wzh: zbx tjd
+iyj: bgw mug
+naw: hhm pkw hwn
+qdf: tjr
+vku: kez abg qmx
+udf: ulz
+mhj: tmg ffw qoy flj nyf ybn que fxt rua rys vyu cri aoh nuf fik jsk wmy epz
+uuy: sug
+roi: out
+abz: isx yiz
+cvr: isx yiz whl
+xrw: fwp pwf fnk glp
+rta: yug thh
+lyu: efc yxj iof hgu kpd
+qwv: fkn gzx lzk
+aum: yrx ubo
+uuu: fmn gzw cjl sug
+hjd: hbs
+epr: maa frp pmc srx fps
+sav: dst
+rng: qou xrk
+jue: rdd cze
+wzl: out
+nwn: gyt cwn
+flj: aqu yyb
+cdj: kxf daa
+zln: nxs owg vku
+pmu: kwh pql
+tqw: lzk jhf gzx fkn
+txo: nfb eez prz wkl
+bko: gzx fkn jhf lzk
+cym: plo
+ovp: plo imv ums sjv
+sjv: vre qtg
+uzz: irr
+nxs: kez aum qmx
+hwe: cqb abv
+lak: weu rtq
+gvt: iyd
+bcm: frp fps
+pli: mug pfl pxs
+gxw: jyz
+nrb: sem pmu kcm teh
+ffw: cfl
+teh: pql vnb kwh
+zdh: pvn
+ome: byz lql
+jnl: mdt ajt yzg nvq lfk aco yws kpp wff vxd nrb evs tjx cdj zdl kml ipx kkf vaw xjv
+yxj: out
+lof: sug gzw
+hwn: you hoo
+eva: jiq dny jky yom
+rgs: qke abv cqb
+fxt: tlz qtc
+fft: mbr uuu
+xjw: rtq
+fnp: fnb ctz jnl wpq zvu
+dcw: out
+rms: pym lyu
+nwy: wxb bko qkz shw gvo
+wpq: aco nrb zdl epr mdt
+lpf: jho
+tzo: wkm yns ndo
+kii: yag gel
+oty: dmu
+cjl: vkl ndl eqc hor pbm hki nvd lzb btl utp jdq zqd qlt
+kdw: evf dxu
+inn: jnl zvu wpq ctz
+idv: yol uub gyg
+epz: yyb
+ovu: zst kdw czw xrw alk hkm kha sor gct ytl wvx ixw edo qmw vvm qdf jzz eat
+gel: bdu
+oic: rms
+arh: cvo wkq toa vdh
+bgw: yoo
+grv: wkm
+duj: emk
+tog: sem kcm teh
+srx: omu otm qpk
+pdv: rek asl vil
+cvj: pdi
+utp: pdv ugr jho
+ufz: sug fmn gzw
+vvm: eem
+imv: ses zmg vre
+uzk: oty nlq
+pwv: jbz
+xhr: jti ufz uls
+xwa: cxv xjw qbx lak
+kbb: jnl zvu fnb
+chx: jhf
+nxn: fxt wmy que jsk rng oxu flj tmg ybn
+kkt: alk hkm bfb zst kdw xrw czw tnr ixw edo vvm qmw jzz eat qdf kha sor gct lsg ytl
+vqb: fmn gzw
+ytb: zvu fnb
+pmm: hhm
+evs: fho vyk
+far: iep kir axy cze
+hkt: zev uga
+fwp: cdu pdk szr oaa
+lfk: vyk dqg
+hkv: shw wxb gvo
+rgv: ctz fnb jnl zvu wpq
+plo: vre ses zmg
+qmw: tjr hmb
+ari: kxu
+xrk: bdj gfq
+jyz: rwj ryf
+jho: asl rek
+irm: you hoo
+hit: jnl ctz fnb
+yug: xfk trd ffe
+edo: tjr hmb ibe
+qiu: fdp wyk
+glp: szr pdk cdu
+ohw: ary
+ytl: evf
+aaf: tcl rgv
+eqc: zkb mxl zke
+aco: frp srx pmc
+eem: ari jvj
+wkc: ubu zbx
+jdq: byz tue
+udq: ovu irr ybz kkt hdz
+vyd: hlf sur rpe ntd
+kez: yrx szz ubo
+gvn: wpq jnl fnb ctz
+wvx: fyy dxu
+cvo: out
+nev: uls tqy ufz jti
+ipx: sem
+gqb: izl
+vfz: wkm yns ndo
+sor: buf
+lsg: knd
+uuw: mxl zkb
+ufu: bqi ssr yag
+qmj: pwv
+ruw: vuk fnp aoe
+zya: ybz irr
+tuz: bnz oai
+rdv: sjc bew
+tyc: znl
+dfy: irr ovu kkt
+wkm: irm dgj yqu
+kyi: jho pdv tjf
+pyx: zke
+rrk: ovu irr hdz
+mhm: cxv xjw qbx
+ynx: vdf arh
+zxh: uuu
+zot: uuy kvl
+pkw: jbz hoo
+dqg: bww vqb kvl
+axb: vyi
+ajt: dzl haw nii hkt
+wyk: pvn fnu myf
+geg: out
+ntd: uzk ggo
+bgt: zdh
+xfk: zih
+qoq: xiw woi dcw geg smh
+yzg: pmu teh sem
+rqe: jti ufz tqy
+ybz: czw xrw bfb hkm lsg kha gct edo qdf jzz eat qmw
+zkq: vkn vdk ufm
+vyu: ruw boq wau
+cdg: uak
+rlv: oic hse
+ugr: rek
+myf: fhk you hoo
+bso: jcg mvt aji yny
+ozr: kkt hdz irr ovu
+uub: zvu jnl fnb ctz
+czw: fwp
+pmc: omu qpk usl
+prz: kbb urb
+vaw: zxh fft zrw
+cph: out
+inh: ble
+dmu: woi dcw
+emk: nqs dac
+rao: zbx
+ipm: pdk
+kcm: kwh
+wxb: gzx
+jbq: hvb rys rua fxt nyf ybn yrj tmg ffw qoy flj epz jsk nuf vyu cri
+ary: oty nlq iyd
+ypy: vis jsp qmj nqi nwn
+isx: deb naw pmm
+wmy: hfe
+shb: hhm hwn xik
+znl: qit zpr ryf
+cze: sby
+xiw: out
+dny: hoo
+kxu: fkn jhf
+cre: auy
+wzq: gzx lzk
+pym: iof hgu efc yxj
+wby: jcg
+aik: ojk gvn irc
+wra: vyi jcg aji
+xuq: hoo
+ffe: wzq
+qmx: dwf
+ana: ulz cut
+qbx: weu rtq
+qlt: rez sbk cre hjd
+bew: wkq cvo roi vdh toa
+vdh: out
+xbo: xln
+szz: usg qtz
+toa: out
+jbz: cxl vyd cym elv ufu sfh
+zkb: lan udq
+kxf: nev rqe
+cxl: imv ums
+ral: lak
+jsp: cwn
+cwr: jhf
+pfl: yoo yrg
+xln: out
+jky: jbz hoo fhk you
+sur: jem gvt
+rxy: out
+jcg: nbp chx tsb mix
+btl: pny jue
+bqi: tuz
+rys: rao eev wzh zkn wkc
+pny: cze iep axy rdd
+tue: gxw cxu
+zke: lan owi
+cqw: kkt ovu
+vmw: lyu
+gab: cut emk
+smh: out
+kvl: sug fmn gzw
+vjv: zpr ryf rwj qit
+uru: cxv xjw
+ksp: hse wqv
+sfc: eky uak nwy hkv
+hhm: hoo fhk jbz
+fdp: pvn hfc myf
+gvc: jbz
+asl: dfy zya
+fnk: oaa
+mfs: yat
+vuk: ctz fnb zvu wpq jnl
+maa: oku omu
+cza: yny
+nvd: far pny
+qkz: jhf gzx
+sbk: hbs hut
+rpe: jem ggo
+elv: gel xwc bqi yag
+qlg: bgw
+tnr: hmb
+yrg: you fhk hoo
+mbi: lzk fkn
+pdf: ksp fea how rlv lvc
+frp: qpk
+owg: aum kez
+utj: sug gzw
+bfb: ipm glp pwf fwp
+byz: gxw cxu
+buf: jvj hrd yrr ari
+hrk: kpd efc yxj
+trd: qwv wzq
+hor: hsv far pny jue
+tgh: wzq zih
+szr: zyf
+zev: sav vkg uhr
+irr: wvx gct kha lsg vvm jzz eat ixw edo xrw kdw czw tnr zst hkm
+fps: oku
+yrx: xbo usg qyt qtz
+vnb: utj vqm
+zyf: fkn jhf lzk
+lzk: udf duj tzo haa pfh uwc
+axy: cqw zbw
+sfh: hlf rpe sur
+oai: ufm
+ojk: zvu wpq ctz fnb
+vxd: dqg zot
+mvm: fmn
+yiz: fdk
+fdk: pkw hwn xik
+tsb: fkn gzx
+nuf: wau boq
+gyg: wpq zvu jnl
+jvz: wyk zdh
+boq: aoe fnp vuk rtw
+ckx: out
+ffm: cjw pdi
+jti: fmn cjl
+eaq: lzk
+hhy: ovu ybz hdz
+urb: fnb ctz
+yrj: ruw wau
+lql: trg tyc
+you: qsz bqf tqh zln kii bgd pth
+lca: ypy tfr rwd
+ble: bgt nqy
+sby: ybz hdz kkt ovu
+war: tqy
+nii: aub zev hmp
+fnb: zdl nvq tjx tog ljh vaw ipx
+vkn: snz rxy cph
+iof: out
+cfl: swy nqu mla
+cqb: nqy qiu
+swy: nfb lhi eez prz wkl
+jiq: you hoo jbz
+lni: wkq cvo toa roi vdh
+uhr: dst rjv
+nfb: inn kbb urb
+afj: xjw cxv jrw qbx lak
+usl: pvq
+pxn: zvu ctz
+dod: rpe ntd ohw
+gzw: lzb lpf utp jum vkl uuw ndl hki qlt kyi cfs jdq pbm eqc acs nvd pyx
+hki: tue byz
+tua: ctz wpq zvu
+hmp: ocz
+tve: kud yug
+qpk: tsj pvp pvq
+iyd: prb dmu
+jrw: rtq kwa
+ndl: jho tjf
+hdz: vvm hkm alk tnr sor zst
+evf: cdg miw
+nbl: ozr
+ibe: wby bso axb wra
+coy: nwn nqi qmj vis
+kha: eem idt
+irc: fnb ctz jnl wpq zvu
+cfs: zke zkb mxl
+kzq: arh vdf
+gct: rta
+mbr: gzw fmn sug
+cdu: zyf tqw
+vkg: mvm
+nqu: wkl prz eez lhi
+pql: utj lof bhd
+pvq: fmn gzw sug cjl
+zpr: kkt ybz irr
+qsz: ums sjv
+dwh: eky nwy ozt hkv
+cjw: out
+fjn: pym hrk
+zih: fkn gzx jhf
+eez: inn
+ulz: nqs eva dac
+ufm: ckx snz cph
+whl: fdk naw deb shb
+hsv: iep axy kir cze
+qyt: dzo
+rtq: gbo ffm cvj
+cyf: yat
+ssr: tkz
+yol: wpq
+yny: tsb mix
+ubu: idv miy
+cxv: kwa rtq weu
+hmb: cza wby
+brs: out
+deb: pkw
+bhd: gzw fmn cjl
+ewj: vku
+abg: ubo szz dwf yrx
+prb: xiw geg
+jvj: eaq dlc
+qit: ybz hdz ovu irr
+vkl: tal tue
+tjd: miy
+eev: tjd ubu zbx
+usg: wzl dzo xln
+miw: hkv uak nwy
+ulw: lzk jhf
+yag: bdu tkz tuz
+weu: gbo mkb ffm
+hkm: knd
+mdt: zrw fft omh
+aji: chx tsb mix mbi
+trg: vjv nbl
+eky: gvo
+ubo: qyt
+abv: bgt qiu
+pwf: cdu pdk szr oaa
+jem: iyd nlq
+csr: yol uub gyg
+yyb: nqu txo
+zrw: wrv mbr
+qou: gfq aaf bdj
+kpp: daa
+sem: vnb kwh
+hvb: qou
+uwc: ulz
+mkb: pdi dev
+amg: afj xwa uru ral mhm
+pth: afj xwa mhm
+how: wqv rqw
+dwf: qtz usg qyt
+jum: zkb zke
+woi: out
+yat: tfr coy ypy
+pvn: jbz hoo
+alk: tve knd rta
+sjc: wkq roi toa
+ryf: kkt ovu
+vjr: nwy uak ozt hkv
+abw: gyh cri vyu rng jsk fik nuf wmy ybn nyf tmg yrj ffw flj qoy oxu rys hvb que rua fxt
+ums: zmg ses
+fhk: amg cxl ewj amz pdf cym tqh sfh zln ykn
+gbo: icr
+tfr: jsp
+fmn: pyx acs nvd ome eqc cfs jdq zqd kyi qlt hki ndl hor utp jum lpf btl lzb
+gfq: hit pxn tcl
+ndo: yqu irm
+hgu: out
+yhh: ybz hdz ovu irr
+otm: pvp hfl
+qla: isx yiz
+dzo: out
+wqv: vmw fjn rms
+bww: gzw sug cjl
+qtz: xln wzl
+tjr: bso wra axb cza
+hbs: uzz
+yrr: cwr
+gyt: you hoo
+wff: daa
+bfn: ohw sur rpe
+yoo: fhk hoo jbz
+ixw: fnk
+dzl: zev hmp
+tqy: fmn
+zkn: tjd zbx
+cri: aik feh qtc
+daa: xhr
+lvc: hse rqw
+cxu: znl vjv
+vqm: fmn sug
+nqs: jiq jky
+rjv: sug cjl fmn gzw
+kir: sby zbw
+kml: dqg
+qke: qiu jvz nqy
+svr: nxn mhj ybx abw jbq
+pbm: rez sbk
+haw: uga aub hmp zev
+drg: gzw
+eat: evf
+kpd: out
+pdg: ovu kkt hdz ybz
+hlf: uzk ggo ary
+tjx: teh kcm sem
+ses: rdv kzq vew ynx bcp
+oxu: boq ruw
+zbw: irr
+ozt: bko qkz wxb
+vre: rdv ynx bcp
+aub: vkg uhr
+tmp: xhr war rqe
+pdi: out
+hse: fjn
+gyh: qtc feh
+nlq: dmu qoq
+zvu: tjx cdj zdl kml ipx kkf vaw bcm epr ljh ajt nvq lfk aco yws kpp wff vxd nrb evs
+rez: hbs auy hut
+hfc: hoo fhk jbz
+nyf: wzh rao
+tal: trg
+uga: vkg ocz
+dac: jiq jky gvc dny
+ued: ovu
+thh: ffe tgh xfk
+icr: out
+rua: hfe xrk
+bdu: oai bnz
+kkf: hkt haw nyp dzl
+rwd: vis nqi nwn
+aoe: zvu jnl ctz
+kwh: bhd lof vqm utj
+dlc: fkn gzx jhf
+vyk: kvl vqb bww
+vyi: chx
+hfe: gfq
+xik: hoo fhk you jbz
+tsj: cjl sug
+vdk: ckx brs cph
+dst: sug cjl fmn gzw
+vil: dfy ued
+ljh: tmp
+ggo: oty nlq
+aoh: boq ruw
+hrd: dlc
+yqu: jbz fhk you hoo
+vdf: vdh wkq cvo
+nvq: haw hkt dzl
+gvo: lzk
+mug: xuq
+ctz: yws kpp yzg mdt lfk nrb wff vxd zdl kml cdj ljh tog ipx bcm
+rtw: fnb ctz wpq
+uls: gzw fmn sug
+vew: sjc
+knd: thh kud
+pdk: tqw ulw
+owi: hdz ybz
+qtc: gvn ojk
+fkn: hho udf vfz cyf wiy uwc inh iyj qlg grv mfs pfh qla abz pli cvr
+pvp: sug
+lhi: urb
+nyp: uga aub
+mvt: mix mbi tsb
+ybx: nyf aoh flj yrj rys rng epz rua wmy
+auy: pdg hhy
+vis: gyt cwn
+mla: nfb wkl prz lhi
+hut: uzz pdg
+jsk: wkc wzh eev rao
+fik: cfl
+bqf: fea rlv how ksp lvc
+acs: tjf ugr jho
+tlz: ojk
+fnu: hoo
+cut: dac
+lzb: cre
+wiy: pxs mug
+pxs: yoo
+jhf: haa uwc iyj wiy duj cyf udf gqb cvr ana pli tzo abz qla hwe qlg gab grv
+zqd: sbk
+ocz: dst
+kud: trd ffe
+yns: yqu dgj
+gzx: vfz rgs gab gqb qlg udf inh ana iyj duj wiy
+pfh: lca yat
+xjv: kxf
+haa: yiz
+kwa: gbo ffm mkb cvj zcl
+zbx: csr idv
+bcp: bew lni vdf
+rqw: vmw fjn rms
+zcl: dev pdi cjw
+wkl: kbb
+wkq: out

src/day11/main.rs

@@ -0,0 +1,125 @@
+use anyhow::Result;
+use std::{
+    collections::{HashMap, HashSet},
+    fs,
+};
+
+fn sol1() -> Result<()> {
+    let text = fs::read_to_string("src/day11/act.txt")?;
+
+    let graph = text
+        .split("\n")
+        .filter(|a| a.len() > 0)
+        .fold(HashMap::new(), |mut g, m| {
+            let mut split = m.split(":");
+            let node = split.next().unwrap();
+            let outs = split
+                .next()
+                .unwrap()
+                .trim()
+                .split(" ")
+                .fold(HashSet::new(), |mut s, a| {
+                    s.insert(a);
+                    s
+                });
+            g.insert(node, outs);
+            g
+        });
+
+    fn count_paths(t: &str, visited: &HashSet<&str>, g: &HashMap<&str, HashSet<&str>>) -> usize {
+        let mut visited = visited.clone();
+        visited.insert(t);
+        let mut sum = 0;
+        for i in g.get(t).unwrap() {
+            if visited.contains(i) {
+                continue;
+            }
+            if *i == "out" {
+                sum += 1;
+                continue;
+            }
+            sum += count_paths(i, &visited, g);
+        }
+        return sum;
+    }
+
+    println!("sol1: {}", count_paths("you", &HashSet::new(), &graph));
+
+    Ok(())
+}
+
+fn sol2() -> Result<()> {
+    let text = fs::read_to_string("src/day11/act.txt")?;
+
+    let graph = text
+        .split("\n")
+        .filter(|a| a.len() > 0)
+        .fold(HashMap::new(), |mut g, m| {
+            let mut split = m.split(":");
+            let node = split.next().unwrap();
+            let outs = split
+                .next()
+                .unwrap()
+                .trim()
+                .split(" ")
+                .fold(HashSet::new(), |mut s, a| {
+                    s.insert(a);
+                    s
+                });
+            g.insert(node, outs);
+            g
+        });
+
+    let mut node_hit: HashMap<&str, usize> = HashMap::new();
+    let mut node_hit1: HashMap<&str, usize> = HashMap::new();
+    let mut node_hit2: HashMap<&str, usize> = HashMap::new();
+
+    fn count_paths<'a, 'b>(
+        t: &'a str,
+        end: &'a str,
+        visited: &HashSet<&str>,
+        g: &'a HashMap<&'a str, HashSet<&'a str>>,
+        hit: &'b mut HashMap<&'a str, usize>,
+    ) -> usize {
+        let mut visited = visited.clone();
+        visited.insert(t);
+        let mut sum = 0;
+        if let Some(n) = g.get(t) {
+            for i in n {
+                if visited.contains(i) {
+                    continue;
+                }
+                if *i == end {
+                    sum += 1;
+                    continue;
+                }
+                if let Some(c) = hit.get(i) {
+                    sum += c;
+                } else {
+                    sum += count_paths(i, end, &visited, g, hit);
+                }
+            }
+        }
+        hit.insert(t, sum);
+        return sum;
+    }
+
+    // after some testing there is not path from out -> dac or out -> fft or out -> src
+    // our fft -> dac
+    // so the result is just svr -> fft * fft -> dac * dac -> out
+
+    println!(
+        "sol2: {}",
+        count_paths("svr", "fft", &HashSet::new(), &graph, &mut node_hit)
+            * count_paths("fft", "dac", &HashSet::new(), &graph, &mut node_hit1)
+            * count_paths("dac", "out", &HashSet::new(), &graph, &mut node_hit2)
+    );
+
+    Ok(())
+}
+
+fn main() -> Result<()> {
+    sol1()?;
+    sol2()?;
+    Ok(())
+}

src/day11/test.txt

@@ -0,0 +1,10 @@
+aaa: you hhh
+you: bbb ccc
+bbb: ddd eee
+ccc: ddd eee fff
+ddd: ggg
+eee: out
+fff: out
+ggg: out
+hhh: ccc fff iii
+iii: out

src/day11/test2.txt

@@ -0,0 +1,13 @@
+svr: aaa bbb
+aaa: fft
+fft: ccc
+bbb: tty
+tty: ccc
+ccc: ddd eee
+ddd: hub
+hub: fff
+eee: dac
+dac: fff
+fff: ggg hhh
+ggg: out
+hhh: out