diff --git a/README.md b/README.md
index 5d61538..cdafd9b 100644
--- a/README.md
+++ b/README.md
@@ -1,25 +1,27 @@
 # Advent of Code 2025
 ```bash
-day01:A =>            1150  (    51us)
-day01:B =>            1150  (    49us)
-day02:A =>     31839939622  (  7737us)
-day02:B =>     41662374059  ( 64501us)
-day03:A =>           16812  (   106us)
-day03:B => 166345822896410  (   282us)
-day04:A =>            1518  (   193us)
-day04:B =>            8665  (  3713us)
-day05:A =>             701  (   140us)
-day05:B => 352340558684863  (    19us)
-day06:A =>   6503327062445  (   188us)
-day06:B =>   9640641878593  (   137us)
-day07:A =>            1678  (    43us)
-day07:B => 357525737893560  (    50us)
+day01:A =>            1150  (    98us)
+day01:B =>            1150  (   100us)
+day02:A =>     31839939622  ( 13822us)
+day02:B =>     41662374059  (128425us)
+day03:A =>           16812  (   119us)
+day03:B => 166345822896410  (   357us)
+day04:A =>            1518  (   321us)
+day04:B =>            8665  (  5870us)
+day05:A =>             701  (   310us)
+day05:B => 352340558684863  (    36us)
+day06:A =>   6503327062445  (   266us)
+day06:B =>   9640641878593  (   145us)
+day07:A =>            1678  (    57us)
+day07:B => 357525737893560  (    70us)
 day08:A =>               0  (     0us)
 day08:B =>               0  (     0us)
-day09:A =>      4725826296  (   159us)
+day09:A =>      4725826296  (   236us)
 day09:B =>               0  (     0us)
-day10:A =>             452  (   395us)
+day10:A =>             452  (   667us)
 day10:B =>               0  (     0us)
+day11:A =>             636  (   491us)
+day11:B =>             636  (   421us)
                             ----------
-                              78306us
+                             152155us
 ```
\ No newline at end of file
diff --git a/puzzles/input11.txt b/puzzles/input11.txt
new file mode 100644
index 0000000..1cb8c9b
--- /dev/null
+++ b/puzzles/input11.txt
@@ -0,0 +1,643 @@
+ufk: out
+kgy: srg try
+fhi: mxe
+ywm: tsx jqk tco
+hjp: pxg fkj ode
+tzd: orq joq smr
+gmu: qfj
+kow: tsx jqk
+lga: ldk kcm eyu
+trj: nnb gek
+uqc: fdh rdj
+opa: uwc iet cst hnj ybf
+xtf: yso rzi tew
+exk: wgb jyz zri igi
+ice: rhu
+fpv: wcy wnm
+wuh: iet uwc ybf hnj
+hon: vbl rnk met ihp
+jvj: gqx
+lgn: out
+zzi: aef ecv
+sce: ixo unv
+uxr: iut
+nss: qbk ncd
+qjk: out
+vjv: you rhu jny
+fwg: tco
+ffk: rpq txp vug hfz
+djh: fdh
+ekp: sau gbi
+amf: ecv kjy
+ciy: lgn fzm
+uiv: lpi xgf
+ihp: cui oul tsz
+qxa: jny rhu you
+xhl: vyp yoy
+tdm: fcw gzu
+avz: omy
+qfj: kuh anb gxw ulx
+rlu: ldg jee qpe riq
+adu: lvz eda uiv
+ykx: yfk
+htw: kgs rpq vug hfz
+qqf: jyz igi sdo
+nkj: out
+cxl: zhi okh
+cui: wrc wnm
+wrg: kgs txp hfz
+upv: nnb
+naw: zlb pav erz zxj oam
+vug: fdj
+yol: fek dvn ywj zxd osu
+xgf: ucd
+wnk: jny
+gfz: ikw qjy
+clh: osz
+jbw: swf czw
+pmi: ybs tkt cld
+qqr: zme bol
+yqo: tfg
+qrz: iet uwc ybf hnj
+eda: kek xgf
+yfm: tzd szb
+enl: jny
+efg: ety dro onk
+ipq: cwu rpf eru gmo
+pgw: ekp hza mog rqt
+gar: dds ihv
+clx: lvd mir ezh ugd rjt
+kek: ltl xph
+pob: jet woy
+vpy: fox rvu
+ddd: kvn fmj uxr
+pwe: ccy cys
+hzl: wcy wrc
+tfl: zxd fek ywj dvn
+urb: tgo
+fzn: uah jyp zvf
+wzs: ksm cka
+pbi: pxq fec dat
+gzl: fdh
+vbl: cui tcg fhi
+yba: xuf exk
+beo: qyj rhp jiq gfz wcx
+xee: upv mxh trj
+mfj: bvq uno daq qth wgz
+zmk: awn ala
+ldk: out
+wvv: pav syo hon clb vhq eji oio lav sdy zlb yby quj kgy
+rjt: oaf ttk apr
+efw: kjy aef ecv
+lmp: jny
+blv: juh udg
+gnn: fiw teb
+cil: mmb wxs ymh
+pfg: rvu utq
+tjq: auf
+dat: vgr ggt uco
+jnv: htw ozg
+fui: qhj
+ghw: tfg
+hza: sau jdc
+arp: okh
+uck: hzl
+hkh: fev muf ddd hgt
+svr: zae jwu wvv naw ypl
+fvc: you rhu
+ggp: fdj
+yby: xcy
+vvw: myu agv hnx
+jkl: ymh
+fiw: see
+edz: iet uwc ybf
+kym: tvq
+nmk: tdm kkc
+raf: bkp hhm rjh ydz
+xru: ych
+qwn: uwc ybf
+jnt: out
+qjq: qxa
+bon: icp rah ipt
+mxh: nnb
+ohd: tlc
+daw: ice
+sen: vpy
+aqf: jny you
+lav: bbl kbm nze
+tgo: you rhu
+aum: fvc nqq fne
+mtn: nsy uho uou yqo jmz szl psd nff wjm efg ghw gmu kui qga njd edv
+vck: qse yfm yns xmf meo
+hfz: amb
+fox: zqk amb
+rnh: qph pmi
+utm: kxp pdj
+ham: hhm bkp
+ljo: cwu
+qse: szb eoh thr tzd
+auf: cst iet
+wlo: rah kep shp
+osj: iuj zme xzb
+qga: qjq ago pdq jlx
+tdt: zmi gex kvd
+mzt: rhu you
+cby: wnm wrc wcy mxe
+pdr: tzm
+nnb: ixo unv
+kvn: vbh acl iut
+wpi: uqc
+txp: zqk amb
+tcg: wrc
+xzb: mtn
+hca: ljo fft
+fgc: wfp crf
+vis: riz
+ehk: yoy qjk tvq
+kwj: nss edl
+kzn: ciy suk
+nav: you
+wew: kep
+xvy: djs
+rss: ygf wuh qrz
+buo: cby smw
+cld: wpi
+keu: jyp
+fss: uwc iet cst ybf
+inn: osj
+tjp: teb
+kxp: twr fcf phr
+phr: wdx jck
+pav: rnk vbl ihp
+wdx: kym xhl
+jck: kym xhl ehk zxb
+otj: zmi kvd gex
+nmh: xru ykn fcf phr
+uah: wrd fsd cza
+ors: kwj qhz mpe
+cwu: iad qod
+hgx: gak
+clb: upb
+pdq: lmp qxa tgo
+hyw: hke clh ixu sen
+qpt: mud ogi
+gao: tzp
+mxe: iul vvw zhx zbl eiq zzi wyl rjz dwe ich bvo axx asm rqm sex
+tco: vjv enl tji
+ivx: ciy
+rzi: raf wig yvt
+fdh: nsy kui zld qga edv nff wlp pcv
+kud: kix gsl boq
+kuh: raj ekp mog rqt
+ski: huu upv
+axx: otj tdt
+fmx: gxw pgw kuh
+lay: ljo krb bue
+ipt: zqk
+vls: sjn iau
+fkj: vls dzt
+vyy: awf ank hsj aum tvb
+qnk: ywj
+smw: wnm wcy mxe wrc
+tsz: wcy wnm
+iet: lmq gjp clu fkh kud rbx hph qdi gnn vff jnv nvs gdk pqk qpn zsb jah xtf tjp miz
+uwc: qdi hph rbx jnv vff gnn clu gjp fkh kud xtf jah zsb qpn miz tjp gdk pqk nvs
+agv: cvb beo vjr
+aqo: kay
+meo: thr tzd szb eoh
+ckk: qfj fmx xez
+acp: udg
+jyp: fsd wrd
+mng: hgd ljv fpv
+vuy: hzl ght hwj
+tew: raf wig
+zmi: hnj ybf iet
+ltl: wrc
+ode: vls xqf
+clu: fiw teb
+loh: ihp
+zhx: blv zvr hfm acp
+daq: uwc hnj ybf
+xll: osu dvn ywj fek
+dro: fwg ywm qox
+kkc: fcw
+frk: wcy mxe wnm
+oao: nji uho uou jmz wlp swt ghw zld gmu kui efg pcv pwe njd
+gdk: htw ffk ozg wrg phe
+ccy: ogv
+ogv: rhu you
+oio: gsu
+rgx: osj
+zae: jmw kgy zlb sdy yby clx quj hon oam gux erz zxj rlz eji loh clb vhq vae
+ucd: wrc wcy mxe wnm
+zqk: jfl gfh tqc hbz fui hnb btv fzn inn szw npa spb avz lqy keu rnh
+yiw: eya uah
+xmf: eoh
+zri: mtn oao fdh
+wlp: onk
+xpd: lga
+odx: wzs xpd
+you: cil xvy sin iph jkl doo cxl upe fga wdd utm azz bbx tsq bsx svm pmq ieg
+raj: jdc
+wyb: wkt
+doo: wxs ymh
+aiz: kvd edz
+ksm: ldk
+crf: sdo
+bvq: ybf hnj iet
+anb: raj mog rqt
+znf: iet cst hnj ybf
+cst: xtf hph rbx rda fkh kud pqk lmq
+omy: kwj qhz mpe
+tlc: mnv hgd ljv
+gfh: fgc hsm krw
+nka: qbq tfg kbb
+xqf: sjn znf ssj
+qhj: tet gzl dil djh arw
+ety: ywm fwg ccm qox kow
+awn: ivx kxo kzn
+yfk: you rhu jny
+sff: fdj amb zqk
+zhi: wsy tdm kkc
+hsd: vwr epe
+wgb: mtn rdj fdh
+qxm: lym frk smw
+xxf: kgd
+wqq: ogv
+jlx: tgo qxa lmp
+xuq: uwc hnj ybf
+rbx: kix boq gsl
+zxb: vyp qjk
+vbh: nkj tdu tiw
+qyj: qwn xuq csr
+xph: wrc wcy mxe
+joq: mxe wrc
+ezh: oaf yno ttk
+gqx: izq kzn ivx
+qjy: uwc iet ybf
+xjn: cfs hwj ght
+yru: fdj
+kxo: afp ciy
+gex: iet uwc cst
+qcy: out
+iau: hnj ybf uwc
+vru: huu mxh upv
+tji: rhu you
+qth: uwc cst
+tkt: jbw qvm wkt
+djs: ala
+gsl: sen hke
+dzt: iau znf sjn
+huu: nnb gek sce
+tsx: tji vjv nav enl
+cza: vxy kbh
+rrk: vyy dac
+sau: you rhu
+vda: ode
+iul: lay
+pqk: kix hyw
+srg: eob vks
+thr: smr joq orq nmn fxq
+dlt: cfs ght
+nky: wzs xpd
+eru: qod
+qbk: mtn oao rdj
+kep: amb fdj
+ttk: ixj mth buo qxm
+ugd: apr yno
+lqy: pmi vis rft qph
+qbq: ice ade
+kix: sen ixu
+rah: zqk amb
+zvr: mfj
+spb: ngf hsm yba fgc
+npa: yba fgc
+qpn: bon iox wew
+sex: tzp hca
+xuf: zri igi wgb
+oaf: qxm mth ixj
+upb: jet gar ohd
+mth: frk
+wcx: qjy xuq qwn ikw
+xez: kuh pgw ulx anb
+gjp: wrg
+ixj: frk lym cby smw
+riz: jbw wkt
+ybf: kud fkh clu gjp lmq jnv vff gnn hph rbx rda pqk gdk nvs miz tjp xtf zsb qpn
+gbi: jny rhu
+gek: unv jnt
+tet: rdj
+usk: ssi omy axc ors
+hgd: wnm mxe wcy wrc
+uie: amb
+qyl: xjn vuy uck
+hgt: kvn uxr
+xre: xzb iuj
+sdo: rdj oao mtn
+see: tzm tfl yol xll
+rqt: sau
+ank: nqq uhs
+utq: fdj zqk
+zvf: fsd
+acl: tdu nkj dtw
+svm: nmh pdj kxp
+teb: olu pdr
+iph: jvj fyb zmk djs
+vhq: lvd ezh mir rjt
+zme: mtn oao rdj
+kbb: wnk ice
+ymh: nky odx aqo
+uou: pdq urb qjq ago
+nng: rdj oao mtn
+fxq: wrc wcy mxe wnm
+qph: cld ybs wyb
+fdj: jyd avz szw usk piw qgn xja keu gfh yiw tqc fui fzn inn rgx
+vgr: out
+uhs: rhu jny
+swt: qjq ago urb pdq
+arw: fdh oao mtn
+ohu: fox utq rvu
+fmj: vbh iut
+lvd: yno apr ttk
+jwu: eji rlz zxj loh oio lav clb vhq vae xxf oam hon erz lpu clx sdy zlb jmw
+lvz: xgf lpi kek
+fek: amb fdj
+nze: uiv
+ala: ivx
+rnk: tcg
+fzm: out
+pxq: uco ggt vgr iya
+bgu: vyy ugx
+qox: tco tsx
+eji: lvd ugd ezh mir rjt
+cys: yfk
+vjr: wcx
+icp: zqk fdj
+hnj: gjp lmq kud hph qdi rbx jnv gdk pqk nvs xtf qpn
+izq: suk ciy
+kvd: uwc ybf
+kui: xez fmx
+ybs: jbw qvm wkt
+dwe: pxg fkj
+cab: agv hnx
+bue: tjq cwu
+olu: tfl qnk tzm yol
+wyl: kjy aef
+iuj: oao mtn fdh
+jet: dds
+udg: daq uno bvq
+jee: xee
+unv: out
+szw: rft qph pmi sio vis
+hnx: sfb vjr cvb
+ogi: djh gzl dil
+ccm: tsx
+dac: tvb awf hsj
+edv: epe vwr rrk bgu
+oul: mxe
+twr: ych
+juh: wgz daq qth
+wkt: czw uqc
+vxy: fdh
+zlb: kbm
+nqq: jny
+kay: cka
+rhp: csr xuq ikw qjy
+cvb: rhp gfz
+mpe: edl rnb
+rqm: ejd aiz
+boq: sen hke clh
+nmn: mxe wrc
+qpe: vru ski
+erz: srg
+eob: dlt uck xjn vuy
+eoh: nmn
+rjh: uie yru sff
+fkh: rzi
+azz: jee ldg
+hnd: ubz ddd
+tzm: osu dvn ywj
+yno: qxm buo ixj
+wcy: gao zbl eiq sue rqm dwe sex
+rnb: erv
+ecv: oek rss bwi
+jqk: tji aqf
+vyp: out
+bbx: djs jvj zmk
+tdu: out
+szb: smr orq fxq
+try: vks
+ugx: hsj ank tvb
+piw: axc
+hbz: osj qqr xre
+hnb: qhj ogi
+vsf: acp
+tsq: kxp pdj nmh
+pmq: nmh
+bol: oao
+osu: amb fdj
+kbh: mtn rdj
+vff: yso rzi tew
+vks: xjn vuy eju dlt
+szl: bgu
+met: fhi cui oul tsz
+csz: xmf yfm
+uco: out
+ldg: vru alk
+ljv: wrc
+lpi: xph ltl ucd
+tzp: ljo ipq fft
+cfs: wnm wcy mxe
+yoy: out
+pxg: xqf dzt
+jyd: mud ogi
+nvs: fiw jqd
+awf: nqq uhs
+efd: qqr xre
+kcm: out
+rda: ffk ozg phe
+rft: wyb ybs
+gux: xcy pob
+rvu: amb fdj zqk
+asm: pxg
+mnv: wnm mxe wcy
+vwr: vyy
+bsx: riq
+dds: mnv ljv hgd
+jyz: fdh mtn rdj
+fsd: nng kbh vxy
+erv: mtn
+wig: rjh ydz hhm
+mmb: nky odx
+mud: dil gzl djh
+aef: oek bwi
+gzu: dat lar
+qvm: swf uqc
+hsj: uhs
+oek: wuh qrz ygf fss
+gak: fev muf ubz ddd
+zxj: uyw pob
+smr: wrc wcy
+lpu: srg
+zxd: amb fdj zqk
+dtw: out
+qod: iet hnj cst ybf
+fcf: wdx ych
+gxw: ekp rqt mog
+qdi: boq gsl kix
+fga: zhi
+kgd: yfm meo yns
+edl: qbk ncd
+riq: xee ski
+ago: qxa lmp
+ikw: iet
+jfl: hsm ngf
+ngf: wfp exk
+apr: mth qxm buo
+dvn: zqk amb fdj
+rew: uah eya jyp zvf
+fcw: lar fec
+vzx: qse
+fev: fmj kvn
+ihv: ljv
+phe: kgs rpq txp hfz
+lar: ggt iya
+ieg: nmk okh
+jny: svm arp iph bsx tsq rlu wdd upe hgx
+wdd: hkh
+zsb: boq hyw
+kbm: eda lvz
+osz: fox utq
+tof: mmb
+suk: lgn gbv qcy
+nji: dro onk
+qgn: sio qph rft
+sin: zmk djs
+bkp: sff ggp
+ixu: pfg vpy ohu
+tvq: out
+ixo: out
+orq: wnm wrc wcy
+upe: hkh hnd
+iox: icp
+hfm: juh
+czw: oao
+eju: hzl
+fft: eru gmo
+rjz: acp hfm blv
+vae: nze bbl
+ade: you rhu
+psd: daw
+njd: qbq
+rhu: bbx bsx utm hgx tof upe ieg pmq svm sin rlu xvy cxl doo jkl iph
+jqd: pdr olu see
+sue: lay hca
+fec: ggt
+ubz: fmj
+iad: hnj ybf uwc iet
+pcv: pdq
+ncd: fdh rdj oao
+rpq: zqk fdj
+hph: rzi tew
+wjm: ykx wqq cys
+kjy: bwi rss
+bwi: qrz
+hke: ohu
+jmw: adu
+wfp: igi wgb
+dil: oao
+rlz: met
+hsm: wfp xuf qqf crf
+sjn: uwc ybf
+muf: kvn uxr
+mgk: ejd cyg tdt
+gmo: qod iad auf
+xja: pmi
+pdj: ykn phr fcf
+gsu: vks qyl
+ykn: ych wdx
+ssj: uwc ybf cst
+xcy: ohd jet
+zld: bgu rrk epe
+myu: sfb beo
+rpf: qod opa
+sfb: jiq gfz
+igi: mtn
+tfg: ade
+nff: ety dro
+epe: ugx
+iut: nkj tdu tiw
+shp: zqk
+onk: qox kow fwg
+yso: ham
+wgz: iet cst hnj
+afp: gbv
+cyg: kvd edz
+ggt: out
+iya: out
+oam: vck
+tiw: out
+eyu: out
+sio: wyb cld tkt
+ssi: qhz mpe
+uho: xez fmx
+hwj: wnm mxe wcy
+sdy: csz
+uno: cst hnj iet uwc
+wrd: nng kbh vxy
+btv: ors
+miz: tew yso
+okh: kkc wsy
+yvt: ydz
+ych: zxb
+zbl: ejd cyg otj tdt
+csr: iet uwc cst
+jmz: onb ykx ccy
+tvb: fvc
+ypl: jmw sdy yby kgy erz syo pav gux oam hon clb oio lav yfa loh zxj rlz eji
+kgs: zqk
+mir: apr oaf yno
+woy: ihv dds mng
+ght: wnm mxe wrc
+ich: tzp hca
+onb: ogv mzt yfk
+syo: kgd vzx
+rdj: szl nji uou nsy yqo nff wjm zld gmu efg njd uho ckk wlp swt psd ghw kui hsd nka qga edv
+wxs: nky
+uyw: gar
+ygf: iet
+ydz: ggp yru uie
+amb: qgn avz szw npa hnb rgx tqc yiw jfl gfh efd piw rnh keu jyd usk rew spb btv fzn qpt fui hbz
+swf: mtn fdh
+fyb: gqx ala awn
+ywj: fdj
+ozg: rpq vug
+ulx: raj hza rqt
+tqc: eya jyp zvf uah
+nsy: xez
+jiq: ikw xuq qwn qjy csr
+yfa: ugd ezh
+eiq: ode fkj
+wrc: vvw cab vda ich gao sue sex amf iul zhx hjp zbl zzi wyl eiq rjz mgk dwe vsf bvo axx asm efw rqm
+yns: tzd
+wsy: gzu pbi fcw
+lmq: bon wew iox
+bvo: myu
+quj: rnk met
+krw: xuf wfp
+gbv: out
+qhz: rnb
+lym: wrc wnm
+jdc: rhu you
+axc: qhz mpe
+wnm: iul hjp rjz cab mgk eiq zzi wyl bvo ich asm axx
+mog: sau gbi
+krb: rpf
+eya: fsd cza
+fne: rhu you
+cka: ldk eyu ufk
+hhm: uie
+alk: trj
+ejd: gex
+bbl: uiv
+jah: wlo iox
\ No newline at end of file
diff --git a/src/day11/common.rs b/src/day11/common.rs
new file mode 100644
index 0000000..c72fe06
--- /dev/null
+++ b/src/day11/common.rs
@@ -0,0 +1,66 @@
+use std::collections::HashMap;
+use std::fmt;
+use std::sync::{Arc, Weak};
+use std::cell::RefCell;
+
+pub fn parse_node_graph(puzzle: &str) -> HashMap<u32, Arc<RefCell<TreeElement>>> {
+    let mut node_graph  = HashMap::new();
+
+    puzzle
+        .lines()
+        .map(|line| line.split_once(':').unwrap())
+        .map(|(node, child_str)| (node.chars().map(|c| c as u32).reduce(|a, b| a << 8 | b).unwrap(), child_str.split_whitespace()))
+        .for_each(|(node, childs)| {
+            let node = node_graph.entry(node).or_insert(Arc::new(RefCell::new(TreeElement::new(node)))).clone();
+            childs.for_each(|child| {
+                let child_id = child.chars().map(|c| c as u32).reduce(|a, b| a << 8 | b).unwrap();
+                let child = node_graph.entry(child_id).or_insert(Arc::new(RefCell::new(TreeElement::new(child_id))));
+                child.borrow_mut().add_parent(&node);
+                node.borrow_mut().add_child(&child);
+            });
+        });
+
+    node_graph
+}
+
+pub struct TreeElement {
+    name: u32,
+    parents: Vec<Weak<RefCell<Self>>>,
+    childs:  Vec<Weak<RefCell<Self>>>,
+}
+
+impl TreeElement {
+    pub fn new(name_hash: u32) -> Self {
+        TreeElement {
+            name: name_hash,
+            parents: Vec::new(),
+            childs: Vec::new(),
+        }
+    }
+
+    pub fn add_parent(&mut self, parent: &Arc<RefCell<Self>>) {
+        self.parents.push(Arc::downgrade(parent));
+    }
+
+    pub fn add_child(&mut self, child: &Arc<RefCell<Self>>) {
+        self.childs.push(Arc::downgrade(child));
+    }
+
+    pub fn find_route_to_cont(&self, name_hash: u32) -> usize {
+        if name_hash == self.name {
+            return 1;
+        }
+
+        self.childs.iter().map(|child| child.upgrade().unwrap().borrow().find_route_to_cont(name_hash)).sum()
+    }
+
+    pub fn get_name(&self) -> String {
+        format!("{}{}{}", char::from_u32((self.name & 0xFF0000) >> 16).unwrap(), char::from_u32((self.name & 0xFF00) >> 8).unwrap(), char::from_u32((self.name & 0xFF) >> 0).unwrap())
+    }
+}
+
+impl fmt::Display for TreeElement {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "TreeElement: {} [{:?}] [{:?}]", self.get_name(), self.parents.iter().map(|c| c.upgrade().unwrap().borrow().get_name()).collect::<Vec<_>>(), self.childs.iter().map(|c| c.upgrade().unwrap().borrow().get_name()).collect::<Vec<_>>())
+    }
+}
\ No newline at end of file
diff --git a/src/day11/mod.rs b/src/day11/mod.rs
new file mode 100644
index 0000000..7750407
--- /dev/null
+++ b/src/day11/mod.rs
@@ -0,0 +1,30 @@
+pub mod part11a;
+pub mod part11b;
+mod common;
+
+#[cfg(test)]
+mod tests {
+    use crate::day11::{part11a, part11b};
+
+    const PUZZLE: &str = "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";
+
+    #[test]
+    fn part11a() {
+        assert_eq!(part11a::solve(PUZZLE.to_string()), 5);
+    }
+
+    #[test]
+    #[ignore]
+    fn part11b() {
+        assert_eq!(part11b::solve(PUZZLE.to_string()), 0);
+    }
+}
\ No newline at end of file
diff --git a/src/day11/part11a.rs b/src/day11/part11a.rs
new file mode 100644
index 0000000..7d780e0
--- /dev/null
+++ b/src/day11/part11a.rs
@@ -0,0 +1,8 @@
+use crate::day11::common::{parse_node_graph};
+
+
+pub fn solve(puzzle: String) -> u64 {
+    let node_graph  = parse_node_graph(&puzzle);
+
+    node_graph.get(&"you".chars().map(|c| c as u32).reduce(|a, b| a << 8 | b).unwrap()).unwrap().borrow().find_route_to_cont("out".chars().map(|c| c as u32).reduce(|a, b| a << 8 | b).unwrap()) as u64
+}
diff --git a/src/day11/part11b.rs b/src/day11/part11b.rs
new file mode 100644
index 0000000..0641182
--- /dev/null
+++ b/src/day11/part11b.rs
@@ -0,0 +1,9 @@
+use crate::day11::common::{parse_node_graph};
+
+
+pub fn solve(puzzle: String) -> u64 {
+    let node_graph  = parse_node_graph(&puzzle);
+
+    node_graph.get(&"you".chars().map(|c| c as u32).reduce(|a, b| a << 8 | b).unwrap()).unwrap().borrow().find_route_to_cont("out".chars().map(|c| c as u32).reduce(|a, b| a << 8 | b).unwrap()) as u64
+
+}
diff --git a/src/main.rs b/src/main.rs
index b4ea594..f0fca35 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -8,6 +8,7 @@ mod day07;
 mod day08;
 mod day09;
 mod day10;
+mod day11;
 
 use std::time::Instant;
 
@@ -46,6 +47,8 @@ fn main() {
         ("day09:B", day09::part09b::solve, "puzzles/input09.txt"),
         ("day10:A", day10::part10a::solve, "puzzles/input10.txt"),
         ("day10:B", day10::part10b::solve, "puzzles/input10.txt"),
+        ("day11:A", day11::part11a::solve, "puzzles/input11.txt"),
+        ("day11:B", day11::part11b::solve, "puzzles/input11.txt"),
     ];
 
     let start: Instant = Instant::now();