2021: day08: part 1

aoc2021/input/day08.txt

@@ -0,0 +1,200 @@
+beacf afbd bcead cgefa ecdbga efb gbfdeac ecgfbd acbdfe fb | bf efb bgecdfa egcfa
+cbdgef cdfageb cegbd fecba edgf dcfbe dbcafg df fcd dbegca | bgcdef dgbec bfeac fdeg
+bgdcfa dgabf bfdec baefd abeg eda afcdge ea bfceadg dfegba | efbad fbdea dae fagbd
+cfdabe fcgbe gcdeb ecdfgb bdc cdgf cd cfageb bgdae daebfcg | decbaf cdfg deabg cd
+eacgdfb fdbeca agedc cbedf dcfgab bgef gdf fdgec fbcged gf | gf acegd fdeabgc gfd
+egcd aebdcf gbeca eg edfcbga gbe cfbag bdeca gadbec bdgefa | caegfbd dgcebfa eg bgdfae
+fcgab egafb gedbca gfc cf ceagdf cafbdeg gcafbd dbagc cfdb | dbecga dbgcefa cfg fcg
+geacd bg cbfead efgabcd fbace ceabg efbadg gfbc gab geabcf | cfbg fabce bg fdgeacb
+bfceg ca baefc caedfb acfedgb cfad edacbg eac debaf bdfage | geadbc bfgeacd efagcdb cefbg
+fd dcfbge fcad dfg bgaefc fdcgab fgdceab afdbg cbagf gdaeb | aecdgfb dbcfag cdaf gfecba
+dabce gceab fegcab fbdca adeg gcabdfe gedbac ed egdfbc deb | fdegcb acbdf ed gdae
+bgcea cbfdage egad ecadb beg befdcg fcgba aecbdf ge abedcg | geb gbe deag eg
+bfecag egbdfac abecg gcebf efdagc ca acbf cfbegd eac bgaed | bdcegfa gbfce dbgecaf ac
+fcbed dbfegca cdafbe edfgc abfde ebc egcfab dbca fdgbea cb | cb fgedc cb cdfeb
+fb fdeacb bfe bfdc ebcgda afdeb acbfge agedf ecbad fdagcbe | gfcdbae fb abcefgd bef
+egbca cfe eadbfg baedgfc cf bcfd afbde acebf fecdag edafbc | cfe caedfgb fc eadfgc
+gfabc fbcaeg bagd cgbfaed dfecb gfdcb fcedga dg dafbgc dgf | abgd bdgcf ebcdfga fcedbga
+cdb abce ebgfdc bfagdec abdcef dbfea gfdca facbd dfaebg cb | cdb cb dbc cdafbeg
+afdbe dcfegb gedca adcbe ecfgbad fcadge cb acgdeb cbe agcb | dcage bec cb cb
+gafdec cbdg fdgbce dce dfegb fceab becagdf dc dfbce agdefb | dgebf dc bfgde cde
+bagfc bdef cgeafd eagfbcd afceb fe cfabde agcdeb cef eabdc | fbdgaec ef ef cafbe
+fbage cgfba bdcage edagbf fe agcfdeb gfe adfe dgabe egbfdc | fe gfe geabf dgecab
+gdfec bgfc dbgafe gfdebc dbfeg fc fabdcge fcd gedac dcbfea | egadc cfd efbdg gcbf
+dacgf dfabc ebgcad daegfcb aedfbc dbgf agd aegfc cbfdag gd | agd gbdf bdafcge bcfegad
+gdbea ebacdf adebfgc dfb df fbdea gcfebd fceab bfcgea fdac | gfabecd efdgbc fcebgd fbd
+fba gbdcf cbae ebfgca fbcegda ab gbedfa gbacf gface gecdfa | ba bacgfde edfgac ab
+fgebda bfgae cfdgba agcbe dbaegcf gbfda ef bfe gcbdfe dfea | ebgfdc eagcb eafd bef
+agfecb cabef dafgec adfeb fbc gacb cb afbegdc cfaeg cbdefg | aegbfc fcb cgfdbe fcaged
+agf eadfc cegabfd eagdf efdgb cgfbde agbfed gfbcae ag abdg | abdegf gbad baecgf afdbeg
+gfbdac bd gcaefd bdcegfa gadbce dgb badf gbfdc fgecb cgadf | bgd fcbgd gdb dbfa
+cbgf efcgbd aefdcbg feabd dcf cdebf ebcgda cf egcbd fadceg | dcf cf gcedaf bgfc
+bacgfe fbc cgfe bcdagf gebfa cafeb bdcafge afdegb caedb cf | befga cbf gcfe bcf
+bgdf geacf acedgb gb aecbfd bdcfa abgcf bgc acgefdb cdgabf | cdbgea gcb fdbg adgefcb
+bdacgef fadeb abcg gfcebd gbf afbge egacf dgceaf bg aefgcb | gfb fbg dbgecfa bacg
+dcegf bg cdafegb cfdebg fagced bge ecfab dbgace cgbef bdgf | gb gbfd adgefc ebg
+gbf fbcdega egdafc bg aefgd gbecfd agbe abcdf edgafb fbdag | cgaefbd dfaeg dafgb dfeagc
+beaf aed aecdf aebcgd eafdcb cgfabd ea gfcde cbdfa ceagdfb | fabe bafecd fecgdab ae
+bdcfe gbdae bcgafd daegfb aecg cdagbe gfbadec gbc gc edcgb | cdbge efbgcda dagcbe agebdf
+ec fdcag aegcbf bagfcd cgfade adecg fdaebcg fecd degba egc | deagc ec ebagd cafgeb
+dcgaeb egadc agcfde efac beagdfc fcdagb dgcef gbfde dfc cf | cdf cf febadgc ecgfd
+afd df gdafecb bdcf fecba acged edcabf egdbfa egfabc acdfe | cgebaf dacge fdbc decga
+ga beafc cgbea dceagf feabdc bfagec abgf cga fdeagbc cebdg | cagbe bgfa gbced gabf
+edag cdafb ae efacd eacgbf cedgbf afe fbceadg cdgaef egcdf | eaf cdafb efa ae
+eagdbfc cagdf badcge fgec cg cdg bdfca feadg fecdga dfbega | abcfd dgc cgd gdc
+beadg ca cdeba gcda acfebg dfbce fcbadge dbafge gdabec cae | gcad eca agbced gdbace
+agfcde gdceab dbeaf agfed dg acfegb gaedbfc adg aegcf fgcd | bdefa cgebfad gdfc gd
+gafcdb bfgaec daecf bcfgdea bged be dcgfb cfebd fbe dfebgc | fcabge dbfagec gebdfca gbfcd
+dcaef agfbec gea ge bged cbdfag fgbade gbdefca abfgd faged | bfdcega aeg bdgaf bedg
+dcbfa ag fcaegb fcdaegb gebdf adeg bdfga dgfeba ebcdgf gaf | cbgedfa ag egda ga
+bcgdaef fcabde dbfage cfdgb daegf bfe dgefb gfadce egab eb | bfe gfeabd gdbef dagfbec
+be egb fgcbde agdbcf gcdfb edbf bagecf ecadg bdefgca bdegc | efcdgab edgbcf efabcg dgecb
+bcegfd ceafd gbefca eba dacebfg gebfd baegdf dabg dbfae ab | bae abcgef gbdcefa dbga
+dceagfb edac ecfba cbgadf dfbge bcdefa fdc cd fcaegb edcbf | bdface cgfabde cdf cdafeb
+cgaedbf acd afbdge afdcg bdcaeg gadfb ac gcbdfa abcf cdgef | gdfac cgdef cgfad cfbedga
+gaefdcb debga cd aebcd gceafb afdceb cfabe dfcb dca agdcef | dbcafeg dfecag dbfc efgdacb
+abdeg eaf cedfba aefdg gcadfe af gdfaecb gcfa gdfec cbgdef | fea cebfda dfceag fadcebg
+bcgdfe fbdce fcdbea bcead adc ca bdgcaf edcgbaf baged feac | ecbad bfdec acd ac
+bd aecfgb bfad gdb dgbace fbaegdc egbaf ecdgf egbdf fgadeb | fcageb dgb dgfeb bfad
+bfcea dfbcea badge bfegdca gac cafdgb gc aecbgf caebg gefc | fegc bcaeg beafc feadbc
+cagef fadgebc fd daf dcfbga ebdgfa cbeadg afdeg abegd ebdf | gbafedc daefg fd gbadec
+dfaebc bcgaf bcaeg abecgf eagf dgecb cae ae dcgbafe gbadcf | ea gdecb bfacge gbace
+dfbec gcbade fadb df badefcg dbeac cfgeb ebafcd fecdga edf | febcg cfadeg ebcgda dbfa
+cadgfe bdfea dgbfeca dab dgbaec afdegb fdgb gaefd db cbfae | dgbf edabf bd dfgb
+decbga ebfcgd gcebf cabfe aec cbfad ea eafg adbgcef cebfag | efga ea cgafbed acfdb
+dcgefb gafc bagfce ca fcaeb aec dfbae ebgcf bcfdega deacgb | begcdfa ace fdegbac ac
+gafc dgafecb cdgeba dbgafc fa bacdg fceabd fbgde afb fadgb | cafgdbe fbedagc adefbc gacefdb
+dgfe dfa fd agcfbd bedac gfaec bdfcgae ebgcaf edfac acegfd | adf degf fad fedacgb
+efgacdb gedfc eadbfg efd dcagf cfdage gdbacf gcbed fe fcae | eafdgb fdcge cafe dfe
+aebg gbfdac dcebfga bdcef ebcfag abcfg acfeb dfcaeg ea eca | bega ace bacfg bgadcf
+ceag caefgb agb fbgdc ag cafbg becfa cfeabd deafgb eafcgbd | cgadbef gba ag bag
+bdge agbec dgcfae agbedcf gdc gbecad dabgc gd fbadc abefcg | gfcbaed dbge dg acfbd
+dcef efb dbcfgae gbecfa fe ebcdag cafedb cadbe afdbe badfg | edcf ef fe fe
+cdagfeb fgabc cafd fcb bdagc dfcgeb gbfacd cf baefg bdegac | cf acgbd fdac cdbfega
+cefbdg debgca abfeg cebgf fdbgac adcgefb fcde cbe ce cdbgf | bgfae bec cfdebga cfegbd
+fcbag gcfbed adgbefc afbdeg adbgf dbea ad cefagd daf debfg | da afd baegdfc afd
+ba gbcda degcb bad adbegc fgcad eacb adgefb gdfaecb gcbedf | dgbaec gdbcfe dba ba
+cdabf cbdgae facgb fadg acg gfbce ag cgdafb edcfab dbcegfa | dafg bdafec cbfeg facbg
+edbaf cfebad aec cdaf ca gfabce cbeda afgebd fbdacge bcgde | ac afgbce dacf fcda
+egdba bafeg bd gdfeba bcedfa agcde bad fgdb fceabg gabdefc | fbgae efgacb cadfeb bgdf
+fdcgae dcefb cdb fecgabd afecb dbcfeg bgceda bd gfdb cdegf | dgabec cbdgae bcd aedcbgf
+beg eg bfcea cdfgeb baefg abgdf fgeabd gcfdba agde dgbaefc | cdabgf dbefgc bdgfa facgebd
+dbgef bfecgad egfcd agfbce agbde bf gcebdf dagfce cbdf feb | fbe ebfcdg bcfd fgcdabe
+abgdec fgd fcgeb gedabf gfbdc dgaecbf afdc dgcafb fd bgcad | fgd adcf bgfcd fdegba
+cafdb acdbge acedb dfbcg af ceadfbg adf adfgec faeb dcfeab | gdabfec bdgfc dcfba feab
+dbcgae bcdfeg bfceadg bafgcd dacgb dfac cfgba bfc aefgb cf | dcegbf fc becagd fc
+geacb gebfda gbcdafe efgc ge ecabd bcefag gfbcda age gafbc | adbfecg acbge cabedfg gea
+gabce feagdb dgb fceadb deagb edbfa gd cbfgde agdbfec afdg | gbd begdcf aegbd bgd
+afecbg fgeda dfeabgc cdafe adgb dg dbcegf fabged faebg egd | ged abfgced gd afcde
+ec badfec cfe befgd gdacfe bace fgedbac gbcadf fdcba cfedb | ecf ec ce efcdb
+dacfgb fd gfdbae ecbdgfa ecbdag cbfeg faed gdf aegbd egdfb | eacdbg gbfdea begfd becfdag
+faegbd fgdace acbfeg dfgecba ed dabge fdbe dae badcg eagbf | dfeb dfgabe adcgb de
+dbe gbcef acdebf defa geabdc de dfcbag dbgaecf cabfd becdf | eadf adcegb efcbg cfabdg
+gcaed adgbce abfeg cb egcba cdba cgadef cgbefda fdbegc ebc | gbeaf cb bcad fadcge
+cef fbacd gafedc ec gaecbdf bfedg gdcfeb bfdce cegb bfadeg | ec fbceagd fce fec
+gfdae adgb cabfde fgdceb dea gafec bdgafec agdebf ad degfb | bcedgf bedacgf cegfa bcfgead
+ec cge dagef eacgbf cdafegb cfgadb gbedca ecagd cdeb agcbd | cfagbd dcega gaecdb bgfaecd
+ebgac cegbad dfcegb abegdf gbdec bae dcae efabgdc ea cgfba | ea eba deca bea
+dcgfba adgbef feac afedgc dcegf egabfdc fc fdaeg bdceg dcf | beagcfd gdbcafe efac cf
+cadfg gb cedagf gbd abgcfd fdcebga acgb febgda fdbec bdgcf | cagb cfagd gbd fegcbad
+fgdca afcdeg bcdeagf gc fcaed defabc aedcbg bgfad cdg cfge | gc gdeacf agdbce fbacdge
+fea adgeb bgfe fe dcfeag bafegd badcf aedbfgc adefb bcdeag | eafbd abfged begf egfb
+gace dagcf fedac fbceagd defab cfe gdcfeb cdfgae ec gbfadc | ecf cagefbd befgdac acge
+afc gaedf dfecga bafcdge cf bgdac dafcg eacbfd gbdafe gcef | adbcg fca agdbfce acf
+cdfebg dcbe fgbdac bfegd be beagfc gfdea gacfbed fbe cgfbd | gedabfc eb eb aegcbfd
+afg dfgec gcfeab ebcfagd fa adfe bagcd gdcfa gfbedc gecdfa | fa eacgdbf fa defa
+bfdag gbecd cefg efcbdga fbc cf gbcfd badfec bedfcg egcbda | gadefcb bfc bacfde bgedc
+cafde dce dcbfa dgcefb cgea dgafceb fgcdae dagfe gfebad ec | fcdae dbgfec gfdea dfcgeba
+gcebad cfgdb cfgeab cdb cd egcdbf gbdaf fcde fgdbcae gfbec | cbd geacdb adbcge dc
+afegb adbfg becafdg dg bgd gaebfc fdge cdfba gbcead abfdeg | gd gbd dabfc defg
+fabeg gd dfebcg dgfae bfgeca fecad adgb efabgd ecfdbag deg | gd cfead dcfea cbefgda
+bfceag dafgb fdce fc cfg gcdebf becgfda dgbec aedcgb cbgdf | fc adfgb dgfab cgbedf
+bfeg decaf cegfa ecfgab gcf dbfeacg caedgb aegbc dbcafg fg | bgdcfea fg bfdaegc afgcdbe
+eac ae cbdfe cbaedf abcfedg bade aefcbg bdcgef cedaf gdfca | efcdbg ae bdfce cdefa
+gdebfca bfgca fda bcafd ad gcda cfgdab fadbeg edfcb gcbfae | cgafdb fad fda acdg
+gfbdcae afed gedac facegd bgeac de fgbecd cagfd ged bdgfca | bacge egbacfd adgfc deg
+gdafbe dbacgf cbefag cbfdg bfdag fcedg cdbgfae adbc cgb cb | bc gadefb bc acbd
+fa egcad acfed ebdcfa dgcbef daf bdecf fgadbc fbae gabdecf | cedfa egdcbfa fa afd
+cfd fd gbafc dcagf daecg dbfa cbfage egfdbc bfdgcae cbdfga | ecbdgf df dabf fd
+eafbdgc baegd fe bagfed aebfg cabedg efg facgb bdgfec fade | defa ef ef fdae
+cfdeagb bdeacf eac gcdbfa egab egacfb cdgfe ea ecfga cgfba | aecfg dfbacge cae ea
+aefcdgb bacfg cdg afecd gedbcf afgcbe abgd adbfcg fgdac dg | bagfc gbfcdea gfdac bgda
+becf baefgd dcafg cb cdbage dcgfb bcg gdbef edbfcg egbcafd | fbce cbg gcbfde gefabd
+gb bgedca fedga cfdeag fegb dcbfa gab afgdb acbgefd bdgaef | bga gb gb ebfg
+dca cedbf dcfebga ca egbcad cdaefb fedag efdac acbf cfgdbe | fbcade cebfdag adc acd
+bgdeafc gaefd fbeagc cdfa fgc degcf dgbafe gcedaf dgcbe fc | gfc egafd cf bcdeg
+dfaeb fae ebacfd egadb fe gadbfc febc gbfeacd fagcde dcabf | beadg adefb fcbe dagfcb
+fgaed gd dacgfb egcd gdf acfed adbfceg edbfca dcafeg baefg | decaf bacdgf fgd ebgaf
+bcfeadg dfagce fdcgba dfcab gabec gcf gf abgfc bacedf bdgf | bcgfeda bdgf fg gf
+ceab gafec cef fcdgba cbfeadg bcagf ce ceagbf agdfe degcbf | efgca efgca cef ebac
+abgef abf gbeac gabfcde degcfb efdbga aefd bgdcfa af befdg | afbcdg fa bdfgec dfbgae
+gdafce cfb agfbc ebaf fcebdg aegfc cbgfea egbfdca dbgac bf | fb abfe aebf dgecbf
+ceadf fecag dcgaeb dgbfcea edc bcafd cdabef ed befd gfcdab | badecf ed egfca edfb
+gecdbaf dbag bfade gabfed cedfba gfade cfaebg fgdce ag fga | bafgdce gacbef ga dagb
+defbcg gbfce beag gacdf cfbaeg dbcfea ea cefga ceafbgd ace | aefcg ae aegcbf ebga
+egbdac fgadb cefdbg aceg gc cedba dcbag ecafdb fgeacdb gcd | cg ecbad egdafbc cgd
+bdac ac fcdaebg afbdeg dbagf fbcge acf cadgbf afedgc bgfca | cdab fgceb ac fgbac
+ba eacfg cab aefcb cdeabgf ecgdbf dcbfe dbfeac acdbeg dfab | bacef adbf bfda cab
+gbfca ceafbd geda gcdfae efbcdg fgced da degbcfa adf cdagf | aegd ad da geabcfd
+fgdacb dg efagc gcd cgefab edcgfa cbedf gfdce eabgcfd daeg | dgc gdc cfedga cdg
+bcadeg fbgaec ecdag gbafced ba bca edab bgadc fdcgae gdbcf | bcadfge edgacf bac dabgce
+aedfb dbfcae caefbdg aefcdg gafcb dfcba bgfeda dc fdc edcb | bdfae cd eafdb cdf
+cga afdebc gc adcgefb adbgf acgfde gcabd gbedac ecgb acdeb | gbce ecadb daebcg gc
+cdf dcafg df cgade cebgad dcgfea fdacbeg dgbfec afbgc fade | bgeafdc feda edaf fbgac
+fagbc dbag feadgc gfa dcebfg gbdcf ag gecafbd ceafb bagcfd | fadegcb gacfed defcbg dgcbaef
+cadbfeg dbgace fcagd bedfca cfegd afgb bgdfca ga adg fdabc | dfcag gcedf cefabd fbadc
+fgeabd egbca dfage fdagec fb dacbfe badgecf baf gfaeb bdgf | bfdg fdbg ebagc beafg
+gbdaefc fa dgafb feda fegbdc dfbeg gaf cegfba gacdb badgfe | bagdf fa afg ebgcdf
+bedc fbagd bdage cgdeab eba gcabef afcdge edgca be cfbgeda | geadb be dceb ebdgca
+fe fceb acegdfb efg fdgce fagbed bedgc fedbgc dagbce agdfc | febcdg egdcfab dcebgf gef
+fagdc ebacgd ecgdb decafgb cefbda geba bagcd bad fbdgce ba | ecdbg abeg dfbeac fgdaceb
+decgaf cgab aedbc cbaegd ca bdegc fcegdab efabd cda cdbfeg | aedbf ebdaf cda dca
+gafbde ecfda afdegc ecdgb ba cbfa cfadeb edabc bea ecbdfga | eab ecdgb bea ab
+gbecaf dbgf facbgde cegabd gebdfa fdaec dfage egf adebg fg | gfe egf becafg abfgedc
+gfceabd adgcb bcdf afb gafbd becafg bf dagef agbdec fgcdba | cbagfd fdbga dcbega dfgecba
+ba afegdb cdab cfgeb facebdg fcabg cdagf fdgcab gab decgfa | cfbdega dacb agdcfb gabfdc
+adebgc bdefcga afegdb bcedf bfg fedbg fg efga dbgea facdbg | gf gf debafg fgb
+cegfda gfa ecgf gf ebgdac afcbd ecagd afebgd fcdag begcafd | fcabd dfacgbe fcabedg ceadfg
+febgcd fcbda cdgab fcgbad bf fdcea dfb egbadfc bgcdae fbag | cedfa fb fb gabf
+ebfag fcbade ad adec bgecdfa afd gebfcd bfdec fbade bgcdfa | adf ecad ebadf bdcgafe
+cafbgde bdace cefadg gefcbd ag egdcf gae bcfaeg gcdae adfg | egabcdf cedga cedag adgf
+agcef egcab fc dfeagb fce gbaefdc ebcadf aefdg adefcg gcfd | dfgc aebcg egdcfba agbec
+db fdbcge dgb gfaced bfacgde dfba egdfba cabge edgfa gebda | eafbgdc db db gdafcbe
+cad cdfgea caegbf agbd cbdef gbcdaf gadecbf ad bcafg dacbf | fgecba cgbfeda da dbecafg
+bdegaf gfde gf bcadeg dafgcb afg bgaef eagdb cfbeadg fbeac | ebgad gfed debfcag fdge
+bgac edgacbf dfbea cgebda gea cfedga agedb ag dcgeb fcedgb | dbage bdgacef cfagdeb deabg
+caebd edf edgfbc fe abfegdc cdfea gfdac eacfgd gfacbd gaef | fega fgae gafe cabde
+bfadegc dafec dbgaec abdcef fdaegc dag cagf ga aedgf fbedg | bcafedg ag ga adg
+dcgfa dgcafeb cfb bf cegafb begcda fdgbce dcebg bfed fcgdb | dgcebaf bedf fb bcged
+cbegd edfa fdc gadcfb gbcefad bgacef acfbe ebacfd bfecd fd | fdc dbgafc cefbd cdf
+fgd dgbfe gf gcef bdecf dgcfba acfbde gdefbc badge facbdeg | dcfaebg fg fgd fbgced
+abdeg adebcg ebafdc bgcadfe gedc ega bgdaf cabed efacbg ge | ge gae age afebgdc
+debfa dfbga fagdc fbg cadgfe acgfbd efgcab cgfeabd dbcg bg | fgdba bg gfacbed ecabgf
+bc egdba ebdacg cgba dabfec bec defcg cdbefga gbfead becdg | bcefagd bec cebfgda cb
+deagbfc agebdc fbedca fa edgafc bfac adcbe gfedb afd efdab | fad dbaef cbfdae af
+afgdeb beagd daecbfg gbfedc ecd becad egac agecbd ce fbcda | fbadge eacdbg cde ce
+fgabec gefb cdagefb fbacgd dgecba adecf eg cefga egc gcfba | dafgbc gec bfeg gefb
+gbcf fceag gb bag bdafge gbeac fdegca cfegdab egfacb daceb | bg cagfeb aedbc cbaeg
+gbac fedagb gaf adcbf ceabfd abecgfd bfcdga ga edgcf gfcda | badcf fcedg adbcfg agebfd
+gdbfc fbaecd gaef ef efb agebc gabdefc ebcgad facegb bgcfe | cfgdbae faeg efga cdegab
+fbacge decgba bcafd fedgab fageb ed efgd ebafd gedbcfa bed | de ed bdafe de
+bcgdf badgec de fecgd cfeag dfbe dcgafeb gdacfb ced fdbgce | de de edc gafbdc
+gebfa fd dgacb dfgba bfdeca daf becfga edfg afgebcd gfadbe | bdcfea bafecgd acdegfb fgbdea
+fgdcb efdcg gcfabd gcdbafe gbf acfb aegcdb edfabg fb gbcda | bgafde gfcbd fb cedbfga
+de fadcg befcdg fbeac adcef efd ebgfca cbefadg edba dbaecf | eagbfcd beagfc bcefgd beda
+ebcfad fbecgd edgba df adgfcbe dfe bcfaeg bedgf bcefg dgfc | df bcagef df aecfgb
+acgdb gdc gcebdaf abcge ecgdfa egbd cbaegf gdacbe fcdba dg | egcfda aebgfc aegcbdf cgd
+gc cge cgdb deafbgc dageb cbega agbcde cedgfa gbefad cefab | dabfeg gc eabcgdf gabde
+abegc agecf adfcbge bcdaeg fbadec bca cb bcgd egdba gbafde | gbdc begad bfecda cb
+daecgb abegd bagedf begfcd fe feag abefd bfe fbgceda fbdac | fbdac gcebdaf egfa fe
+eafcbdg abcdg acegf dfcga fgaebc defcbg aefd dfc dfgace df | df adef fd dfea
+fdecabg ba agebdc adb gcdea befdg gabc egdba badefc ecagdf | bda gcabde gdaec fgdcae
+cdfg dbecf dg caebdf gbd beafg cbegfd ebcgdfa gdfeb agdecb | cedfb gd cbgeafd debgacf
+bca cadbfeg gabfcd bcgafe caebg adgfec bc bcfe gefac beadg | cgefab cgfae befc acbegf
+cabgdef cgabde efcab degcf gcfdeb da fgda cda feagcd aedcf | adc da cgaedf cgdfbe
+dagfbe gaefb efcgadb fbcae fg gbf edbag cbgdae gadfbc gfde | bgf gf acgdfb cfgdba
+cbedag edgca bfcagde gfbae gfdea df adfc dafceg fedbcg gdf | adecg gbafe acdbfeg df
+ebfc ef gecfad gfdcb egbad gfabcd ecgdafb feg bfgdce dbefg | aegdb bfged ef bafdgc
+ce cefd cafdg cdgefa geacbd eca gcbfad gebfa afecg bfedcga | ecgfa cea defc ce
+ceb edbgafc fabec cb dfagec fgbea daefcb efdca cebgda bfdc | bec eadfgbc degabc adgfce
+cgf aefbdgc gf bagf gedacf ecgfb cdfeb acgbe ebcfga cedbga | gf fbgcade cbegfda acbdfeg

aoc2021/input/day08_provided.txt

@@ -0,0 +1,10 @@
+be cfbegad cbdgef fgaecd cgeb fdcge agebfd fecdb fabcd edb | fdgacbe cefdb cefbgd gcbe
+edbfga begcd cbg gc gcadebf fbgde acbgfd abcde gfcbed gfec | fcgedb cgb dgebacf gc
+fgaebd cg bdaec gdafb agbcfd gdcbef bgcad gfac gcb cdgabef | cg cg fdcagb cbg
+fbegcd cbd adcefb dageb afcb bc aefdc ecdab fgdeca fcdbega | efabcd cedba gadfec cb
+aecbfdg fbg gf bafeg dbefa fcge gcbea fcaegb dgceab fcbdga | gecf egdcabf bgf bfgea
+fgeab ca afcebg bdacfeg cfaedg gcfdb baec bfadeg bafgc acf | gebdcfa ecba ca fadegcb
+dbcfg fgd bdegcaf fgec aegbdf ecdfab fbedc dacgb gdcebf gf | cefg dcbef fcge gbcadfe
+bdfegc cbegaf gecbf dfcage bdacg ed bedf ced adcbefg gebcd | ed bcgafe cdgba cbgef
+egadfb cdbfeg cegd fecab cgb gbdefca cg fgcdab egfdb bfceg | gbdfcae bgc cg cgb
+gcafb gcf dcaebfg ecagb gf abcdeg gaef cafbge fdbac fegbdc | fgae cfgab fg bagce

aoc2021/src/day08.rs

@@ -0,0 +1,68 @@
+use std::fmt::Write;
+
+use anyhow::{Context, Result};
+
+const INPUT: &str = include_str!("../input/day08.txt");
+
+pub fn run() -> Result<String> {
+    let mut res = String::with_capacity(128);
+
+    writeln!(res, "part 1: {}", part1(INPUT)?)?;
+
+    Ok(res)
+}
+
+fn part1(input: &str) -> Result<usize> {
+    let entries = input
+        .lines()
+        .map(TryInto::try_into)
+        .collect::<Result<Vec<Entry>>>()?;
+
+    Ok(entries.iter().map(Entry::count_easy_digits_in_output).sum())
+}
+
+struct Entry<'a> {
+    four_digits_output: Vec<&'a str>,
+}
+
+impl<'a> Entry<'a> {
+    fn count_easy_digits_in_output(&self) -> usize {
+        self.four_digits_output
+            .iter()
+            .filter(|digit| Self::is_easy_digit(digit))
+            .count()
+    }
+
+    fn is_easy_digit(digit: &str) -> bool {
+        matches!(digit.len(), 2 | 3 | 4 | 7)
+    }
+}
+
+impl<'a> TryFrom<&'a str> for Entry<'a> {
+    type Error = anyhow::Error;
+
+    fn try_from(s: &'a str) -> Result<Self, Self::Error> {
+        let (_, output) = s.split_once(" | ").context("couldn't split on ` | `")?;
+
+        Ok(Self {
+            four_digits_output: output.trim().split(' ').collect(),
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    const PROVIDED: &str = include_str!("../input/day08_provided.txt");
+
+    #[test]
+    fn part1_provided() {
+        assert_eq!(part1(PROVIDED).unwrap(), 26);
+    }
+
+    #[test]
+    fn part1_real() {
+        assert_eq!(part1(INPUT).unwrap(), 488);
+    }
+}

aoc2021/src/lib.rs

@@ -7,3 +7,4 @@ pub mod day04;
 pub mod day05;
 pub mod day06;
 pub mod day07;
+pub mod day08;

aoc2021/src/main.rs

@@ -9,6 +9,7 @@ use aoc2021::day04;
 use aoc2021::day05;
 use aoc2021::day06;
 use aoc2021::day07;
+use aoc2021::day08;
 
 fn main() -> Result<()> {
     let days: &[DayFunc] = &[
@@ -19,6 +20,7 @@ fn main() -> Result<()> {
         day05::run,
         day06::run,
         day07::run,
+        day08::run,
     ];
 
     aoc::run(days)