Day08 2021

2021/src/main/kotlin/Day08.kt

@@ -0,0 +1,49 @@
+package be.vandewalleh.aoc.days
+
+import be.vandewalleh.aoc.utils.BaseDay
+import be.vandewalleh.aoc.utils.input.Day
+
+@Day
+class Day08 : BaseDay() {
+
+    override fun part1() = input.lines.value
+        .map { it.split(" | ")[1].split(" ") }
+        .sumOf { it.count { it.length in setOf(2, 3, 4, 7) } }
+
+    override fun part2() = input.lines.value
+        .map { it.split(" | ").map { it.split(" ") } }
+        .sumOf { (pattern, digits) ->
+            val patterns = decodePatterns(pattern)
+            digits.map { patterns[it.sortChars()] }.joinToString("").toInt()
+        }
+
+    private fun decodePatterns(patterns: List<String>): Map<String, Int> {
+        val result = Array(10) { "" }
+
+        result[1] = patterns.single { it.length == 2 }
+        result[7] = patterns.single { it.length == 3 }
+        result[4] = patterns.single { it.length == 4 }
+        result[8] = patterns.single { it.length == 7 }
+
+        val frequency = patterns.flatMap { it.toCharArray().toList() }.groupBy { it }.mapValues { it.value.size }
+        val a = (result.letters(7) - result.letters(1)).first()
+        val b = frequency.findKey { it.value == 6 }
+        val c = frequency.findKey { it.value == 8 && it.key != a }
+        val d = frequency.findKey { it.value == 7 && it.key in result.letters(4) }
+        val e = frequency.findKey { it.value == 4 }
+        val f = frequency.findKey { it.value == 9 }
+
+        result[0] = patterns.find { it.length == 6 && d !in it }!!
+        result[2] = patterns.find { it.length == 5 && b !in it && f !in it }!!
+        result[3] = patterns.find { it.length == 5 && b !in it && e !in it }!!
+        result[5] = patterns.find { it.length == 5 && c !in it && e !in it }!!
+        result[6] = patterns.find { it.length == 6 && c !in it }!!
+        result[9] = patterns.find { it.length == 6 && e !in it }!!
+
+        return result.mapIndexed { index, value -> value.sortChars() to index }.toMap()
+    }
+
+    private fun Array<String>.letters(number: Int) = this[number].toCharArray().toSet()
+    private fun <K, V> Map<K, V>.findKey(predicate: (Map.Entry<K, V>) -> Boolean) = entries.find(predicate)!!.key
+    private fun String.sortChars() = toCharArray().sorted().joinToString("")
+}

2021/src/main/resources/day08.txt

@@ -0,0 +1,200 @@
+ecfdbg decfba aegd fdcag fagecd gd gcafb efdac cbgeafd dfg | bgacf afdebc fceda cabfg
+cfdabeg cda bcgad bedfac aefbgd bfgcad dfbga egabc dgfc cd | gdbefac fgabcd dcbefag aedgfb
+aedbfgc gcaf ebgfca bca edgcfb adbge gebac fbegc ac afdcbe | ceafbg acb egbad gfaebc
+gaeb cafdbg aedfc ecfgdb ab cdaefgb cgbdae bdecg cba eacdb | gfacdeb gabdec begcd adbce
+fcbgea fbedg bc cbefg befgcda cfgdab gbc efdgca fecag aceb | faecg cb cb fecbga
+fdebcg bag gdefa ceadgb fcab ebagfc ab fbegc fcaedbg fbeag | cfegb bga edfga fgbec
+fg fcagb dfgceba edgacb fagd gfb dcgba agcfdb gecfbd ceafb | facgb fbdcge gf gfabc
+eabfd dfb gbcfad ebdag fagbce gefabdc edcf aecfb cbdafe df | egbcdfa afdebcg aecfbd acefb
+fbaec bfegad bga deacbg gb fbdg acgdef deagf fgabe gabecdf | fgdb gefba gcdafe bg
+bfdea agfbc gbd faecdbg gd efgd cdgeab efadbg faebcd fabdg | cdbgea fged cfabed bgd
+gfedac cgaef gab ceba ba afcdgb gdefbac fegbd bafeg abcgfe | gcbadf egafb ebafg ab
+bgda agfcdbe agfde faegb baedgf fcdaeg fdbeac ba bcegf bfa | bcefg eagdf ab bacefd
+dfgbac fdcaeb cbgeda bfdea dcabf ebadcfg gfbea dbe fecd ed | ebd cdfe bgeaf cdbfea
+efdba edb eagbcd bacef bd bcfd becfagd begcaf cbaefd aefdg | fdage edbgac cgaebd bed
+gfecbd gbadf fabged gbf cbdage fagcd feab edgcbaf fb aedbg | agdcf bgfda afdgc afdgb
+gfaedc caefb badcfge dgfe acdgbf eag eg fgacd gecfa ecbdag | acdbgf cbegad cgdaf eag
+gfebda fgacd dfbag bg geab gcbdeaf eacbdf cedbgf fbg abfed | aedfb gb eafdb dbafe
+ebadfc efdbga bega fdgcae dbgaefc edfab fag ag dagbf cfgbd | efacgd dbefag fadebg bgfad
+bf fbd cgbdaf dcfbae fgbcd gcbadef gafcde bfag cebgd dcafg | afbedc gcdeb fbgadc dbf
+gfecab fageb cgb acgeb gdfeab ecbafdg gfca aecbd gc edcgbf | afcg cedba aecdb cgeba
+cdge abfdge cgfeadb bdc gbacd cd cdaebf bgeda cgdaeb acfgb | baecdg fcbag dfeagb gcde
+efabdgc ecafg dacgbf ecgfd dfe gbfdec ed bedc cfdgb gedafb | egcaf cfgae efcgd de
+bfagdc dbagef gbedcf afdeb ab edgfb gdebfac fdeca baf eagb | bfa bgadfc adcef ab
+cfdbae dgefc fcaeg geafdc dfag fd cegbd daefbgc cfd cefbag | efgcd cgdfe cefdg cdf
+cbged feabc fdgb egf ecfdbg dfgcea gabfdce ebcdag bgefc fg | fbgec bgdf efgcbda cbedg
+ebcdfa ef cfe cadbfge becfd dgbeac dafe gbdfc cefgba ceabd | bfcaeg gfedcab acbfge fe
+fbdage bf acdgb cabf gcfed gdcfbea fgbdc fbd fcbadg bgedca | bcadeg bf facbdeg gdabef
+gfacdbe fga gbdaf gadbc dfeagc fg bcgf eacgbd acdgfb debfa | gdcab agcbd dafbecg gfa
+gadbcf badfe bae cfaed abfdg adfecbg eb bedgaf ecfagb egdb | bdaef egfdcab eb be
+dbgecaf gacd dfbac dbaefg dba bfgced cafbdg cbfgd faecb ad | degbcf baegdf gaedbf dfegbc
+afgcd dabgf gedfba agc bdfgac gdefc bcaf cfeadgb ac ecdbga | gfadbec fgcda edgbac fbagd
+acbegfd cgeb dagbef gbaed caebdg gc dafgec adcbg cdbfa gdc | bdaeg bdfac bdfac bcgad
+gfab agfbde fa edbgf cbedfa decga cdagefb degbfc egfda afd | daf fa afd efacbd
+caegdbf daefg fbgac be fgaeb cbea bge cdfagb dgecfb abecfg | gebaf aceb gfdecb befga
+efcgda bd efgdcab afbec bgcd fdagc dgabef dab dafbc cfdagb | dba dcgb ecbdfga abfcd
+abdge fd fda fecd bfcage fecdba fdgbcea afbde acdbfg cfbea | fedc fced adebf fbacde
+acfdbe egcadb gfbacd acfbd bagefcd bgfa cefgd gac cdagf ag | ag bcadeg dgcafb cefdg
+eabdfc fcaeg fecad bcfda dcfbge ebda de ced fdacbg dfbcega | gcebfda gdecfba dbgfec defca
+bfc gdfceb cf eafgbd edcab ebcfa gfeacb acgf adcbgef fabge | bafgecd fgabe aegbcf badec
+gfbc gaced fg bfcda fgd fcgad dgefbac bcafde dgcfab edgfba | bcgf bdceaf dbfaec bdacf
+acbdgf dfcgb dcfeg egbd aedfc fcebag ge gef cfegdba fgbdce | gcbfea fceda dcfgb dfgbc
+agcfd fga fecda gadebf dbgcfe fcbdga dcfgb ga gbac cbfgead | fdeca gbcdf cfdgb afg
+eba ebdc gbefda dcbegaf fbaced afgec be dcfba ebacf dfcagb | eb eab bea be
+bfcge bfead edgfacb edcfag abegfd becdf dacb cd cde bfdcea | adefgc cdab fbead dcba
+bacegd gafcbe begfa bcfad ed gedf ebgfda bdefa ead fegdbac | geafb fedba dbcage egdf
+df fbgdc fcd bfgce abfd cdfgba cgefad cgbad ecadgb egbfacd | bcdgaf cedfga dbgafc dgfbc
+dfabge bcfdg egfbca bdaefcg decbfg ebfgd fgdca cb cbde cbg | beadcgf dgacf adfgc bc
+fgda dafecgb egdbf gef dbgec agebcf gf edgafb fcaedb bafde | fg fecdab bdefg bgfde
+abfgecd eabgf fcdabe gbdafe acebg dfecgb gf gfb fgad dafeb | efdacb efadcgb dagf dfabe
+ceafbg dfcabe gcfea gbac fgead gc cbdgef egc aecfgbd cefba | badecf badefgc bfaec cbeaf
+cadfb caefbd cbfega fdbga cad dc edbc aefbc egbacfd dfgeca | cefdab cdfage bacdf dbafc
+gfcb cf ecafdg fcbed dfbagce fbgeda gdfbec cef eacbd ebdfg | gbdaef caedfg cf gbdefc
+gd cgd ebdafgc cfbega gcbfde bcfdg badfc bgaced bcefg gedf | gfed fcbgd cdgfbe cfbeg
+bfga dabge befacd agbdce fb aegfbd fcged dbegf ebf ebgdcaf | bagf ecfdg fbe bedagc
+beac ea ade gefcd ecgbad cbagd badgcfe ebfgad acgde gcfdab | ea gceadb gcbad cbdga
+cadfbg bcgafed cbedf afeg abegdc adf gedca efacd acdgfe fa | daecg fdecga edafc adbgce
+egd ed egacd cgabfed efcd degfca dagbfc dcagf bgfdea abecg | dge egcad ged cgdfa
+cgdeaf fcbdeg fgc dgcea cadgbe abdcfeg gf cafbe gadf cfega | aecgfd bfaec gf dceabg
+caegd cbfgae dafg egd gd ecafg gfabdec cafdge bacde bdfecg | gedfcb edcagfb cdega becgfd
+badgfe ed dcge fgdceb cebfd cbfedga dabcf efd ecgafb cgbef | dgec dfe ecbgfa cebgaf
+dgabcef bcd cfeadb degfca bgace gcebd cegfd gbdf bd begfdc | acbeg dbc gdfb gfdb
+edafgb bagf acedb dbg fcgdabe bcdgfe gb bgead dfaecg faged | gafb dgafeb gbaf fadegb
+bc abcegf bfcgd gdcbef dcbe gcb cafegbd aegdbf dfagc dbegf | cbg cbg cfedgba dgcfabe
+be ecgbf cbafg ebg bagedc fbae degfabc fgcdab dgfce cabfeg | gfcde dgfbca dcabgf bacegd
+af dbacge efa abegfdc gfdce begcfa aecfg afbced fgba ecabg | ecadfb gfeca efa gefdc
+acbedg edfacbg begd cdfabe dagcb eacdb gfeabc bg gba dfgac | cegbaf ecfdba cgbda dfebca
+dcbgaef bca abed cbgad gdaec fecbag edgbca geadfc ab cdgfb | beagcd dgbca eabd ceabgd
+cgabe gfcbe cfegba fdbgc fe fdgebca aedcbg gfea bfdcea fbe | feb gaef badgec ecgabf
+afecdg dfbc cd dcg aegcb baedgf becgd becfdg eacgbdf ebdgf | gbedf edgbf bcdeg gfadbe
+gfdba adbefc ebcdfag bcgaf bfdaeg dg adbfe egbacd bgd dfge | gbd bgd bcgfa fbgad
+dfaegb fe bcgde face afgbdc acgebdf agfcb cgbef fcgbea gfe | acef afedgb bgdfcea fgedab
+abdcef gdfea cbaef gaefb cagebf agfdbec agdbfc ecgb fbg bg | aebfc egcb acfgbe gebc
+bcf gbadec bf bgaf fcdea cgbda gebdfc dgefcab fcabd bdagcf | edacf bf cfb gadcb
+cdafgb bgdf gacefd cdb bd ecfadbg cdafg cdebag bfadc ecafb | bcefa cfdba agdfc fabdc
+egb dgbf bgdeca febag fbadge ebadf aecfg gb geacfdb fbacde | fdbg bg caegf egfab
+ac eagfbdc bgacf cbdgae gabdf acdf gdfaeb acg dbgafc gbfce | gdbeaf agbcf dcbagf fgadeb
+ef eagf bfegcd gbaefd fbe eafbd dagfb abced agcfbd abcefdg | ef ef ecdgfab deafb
+fdgbc efbgd aedbg dfce bcagdf fe fegcab cdgabef efg cgdfbe | efgcdb efg agcfeb dgfabc
+fe dbefgac baegc eagfc ebgf acdgf aedbfc bgafce cef bcgdea | agbdce aecbfg cdgaf ef
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+bac cdbeagf abfd bcfea edcfba abdcge edacf gcbfe gcdefa ba | cegfb cafde ba fegdcba
+gcabfd acdg cg gfdbcae ecbgfa cbg bfegd gdcfb cedafb fadcb | cgfbd cfgdb fdegb cg
+fcdaegb gdefcb dgfacb dcgea eb dgcbf afcegb bgced bdef bec | ecdag eb befd dabcfge
+defcb eabcf bca abfeg ac cafbge gfac dbaecg fcbegad bagedf | bfgae cfga ecabf aegbcf
+gdcfea adgcf cbged bgadfc gbf gfdbc cfegdba bcfa bf dgaefb | fgadc bfg fb bf
+bdgcaef adg egbca cdabg eadbcg eadc cgdfb efagbd ad ebfagc | da dace dga gedfab
+cade afgecd fgedc cbaegf efbgd gdfcabe ce fec cadgfb dcgaf | ce adefgc cdea fce
+efgcba ged gcdbea acgeb decag cdgaf egbcafd bdae fgcbed de | adeb edg cgadf agdec
+agfce af febgc ebgadc cadeg dafg faegcd bceadf bfaecgd efa | egbcf fbgec acedg af
+cbgdae debcfa becadfg agecb gcde cfgba ce begda bec fdaebg | bec eadgb eadbg badefgc
+bagedf ecf ec dbefc cbedfa edca dfbcg edbfa eabgfc aefgcdb | fec dafebc cfe aefdb
+aef bface dabefg ebfdgac caeg bgfac fcegba fcbed ae cfgbad | efcba baefc afbcg gbcfa
+dfeca fdagcb feagc adcbef fg gefd cabge fgdbace cegadf cgf | fg decfab cfdbga baecg
+gbaefd agedbcf cagbe fb cgbeaf baefc bfgc bgeacd efb dcfae | gcbaed fb bgfcae bcfg
+cegf bcedg bgacdef gbedf fg ebadf ebgdcf dgcfba debgac bfg | bdfgca bgf fgdbce becfadg
+decafgb acgbd fegdab cefag dfcga gdf fd aecfgb dfecga cefd | gcebfa fgacbe fgbdae fcde
+faebc acb bdfgca afgedcb ab daeb fcbge afcebd feacd cafedg | fbgdca ab afedgc ceafbd
+gfeb ebgcdfa dfgca abfdg agebd bf abf bceafd dabgce dbfgae | fgeb gadbf gcafd bf
+ecbdfg gecdfa efcadgb ebdac deabf fbga bf dbf efagbd dfgae | adfbe cfdage efdcga gfab
+fg cedbgaf feacbd dafgeb fag gfecba acgde febac cfega fcgb | decbgfa fg ecgad afdbgce
+cfbgde aegcdf daefbc dgceb fcged gafdecb cbfg bc ceb gebad | dafecbg eagdb bec begdc
+cdefga fbgcade fgdca cd bafdec adc dbgeaf cafgb efgda cegd | afcgb ecdg bcfag caedfg
+agfbc af deagfbc fecbg gfa fcegbd cfae bgafec edagbf bcadg | agf ecfa becfg af
+bdgf afceg adcfeb egbaf afgbde afb fb cegbfda daebg adgbec | fba ceadgbf bf fb
+efgb eg aecbd ecbdg daecgf dcgfb fbagdc egfadcb gce ecbgdf | afbegcd fegdac cebad bgafdc
+acgbd eb dbace bdafgc fabdge bceg gecdba edcaf aeb bagcdef | fdgabc fegadb dgbcfea egabfd
+cadfgb acefdg fcb fbea fb ebdfca ebcdf degcb dfaec cbdefga | aefcdbg cdegaf gdbec dcfae
+fcdab edc cfeb gdfcae dcaeb ec gdcbaf fdcabe debga efbgadc | fcbe gbaed fcaedb acedgf
+gb gefca acbfge bdgaecf bfcag bdfca abg aedfgb gebc agfecd | cgafb ebcg aecfg efgbac
+dgabcef fbdgea fb cdbf cebfg bdaegc dgceb egcdfb bfg acgef | cbgde faegc befgdca cbdf
+cfaebdg fg fgcead agedb fge ebcdf gebdf dfeagb dbgace fgab | gfba eagdfcb dcabeg cegafd
+fbe egcba bgefdca bgdafe afdgb fdbgac dgcbfe fbega defa fe | ebf egafb fbgdac egafb
+gdc acfdeg geabc dbfg dabcfe dbeafcg dg bedcf edcgb efcbdg | agcefd cbdfe dg bcedf
+bafgcd febdgca abgcf bcgea be edgac aeb cbef afebgd ecgbfa | bea eb ecfbag abfcg
+cdae cbd gacbe fcbdge cefbag bagcde gcabd bdafg dc fdgebca | cegdfb gbeacd cd cabdge
+dac dfgae fcdabg agbc dcfbg gfedbc fadcg bfaegcd ca eadbcf | cfabged ac cbag dfceab
+egbdcf bdeagfc aegcb bafec fdceb edgafc caebfd aef fbad af | efa adfcbge dfba ebgac
+ebadg fcaeb dc acdg becgfd adecgbf dbc dbeafg dbaec bedagc | cdb bdc dc aecbd
+cfaegbd agbdce edca badgf edgfbc ebagd ed gde aebfgc ebcag | cbeag edca gdbea fbedgc
+fgb dfagceb cabgdf gf afge ecbaf deabcf cbdeg bgefc gfceba | bgecd gf bacef fg
+abd fgcdaeb gfeabc gdfacb fcbea faebcd dcbeg badce ad dafe | adecb gfaebc fdcbga aecdb
+fcgdeab eabgf feagd dge dg cdaefb acedbg cdfg gcaedf efadc | cfade cbeadg bgfea dg
+fegcb fcedag badgce fcbdgea afg gafeb af dbgefa degba fadb | fbegc fabge af dcgabe
+abcdfg dcbfea bagd cegfb bd dbf cgafde edgcbfa fgdca bcdfg | fdabce gbcfd cbefda ecabdf
+afgbd fbgde dcfageb ag gba gfdcab eadgcb cfag daebfc cdbfa | ga ag bdaefc ga
+egf ecabfd fg ecdfb cfgb cbegadf dgbfae begcfd agcde cgdfe | gbdefa fedgc cafedb cfdge
+bafcdge dgbace cgbad cdafe bedcfg be abge cebad dcfabg bed | dbe gabfced cgbedf cbadg
+becagf fdec debafc afedb adbgc bgdfea dabcf cf cabegfd afc | bagdc decf fca dfbae
+dcagb gfcade cgdebf fdbeag gdfeabc efdcg ecfb deb egbcd eb | eb edagbf ebfc eagdcf
+ebcdaf fgdc gbeac dgfae efadbg cd gcefda dgace fbgedac cda | aegdc dfabge gcade daceg
+fgdcb adceb fcgeabd acedbg af fba aebgdf efac dcabfe adbcf | cdbaf cgeadb bdcae bfgaed
+fcb fc fcdgb dabfg eabcfdg cbged cefg begdca gcdbfe efdacb | ecfg fabgcde gdecbaf bacged
+gfdabc ad bdfgea fegbdac gbaecf bfega adg adbe afged egdcf | dcfgab bgcefa gad gafcbd
+bgdcfea afb gabfcd adbfeg efdba bgdfe dfgbce eafdc bage ab | ab dgefb baf bgaedcf
+geabd adecfgb cg ebcdfa agfbdc fdcg dabcf dcbag faebcg cbg | dagbe fgdbeca cbagdfe fcbeda
+bdfa dafbge fgedb bfceg bdg afdebgc bd bdaecg defcga gfdea | bagfdce dcgafe fegbc dbegca
+aedcgb fb gdbaf dgabe acdfg fabgde fadecgb gbf edfb facegb | agdcf badeg fb fabcge
+dfbce gafed ba eagb gfdbca aefdb fecdag fagbedc abf egadfb | eafdb edfcbag dcfbe ba
+afdec fcegda edgabc bgdfc faebdc ba bac dcfebag fadbc fbae | deafc acb fbgaecd cfdea
+gecd dgf eabdf gd gfdeb fgcadb gcbfae cefbg cedfbg cfeabdg | gd edfba fgbce fbgec
+adfge bcgfde baecg dcfgaeb bafdge gdeac dagcef dc cdg acdf | cgd dgcae gcead cd
+efgac agbfedc aecbfd agbfde dcbg fdbag gacdfb bc fgbac fbc | bc afdegb bgdc edbafg
+be cbfgad acegdb agefd dabgc cebfgad gbce bdega dfbace bed | bagde eb egcb edfbac
+gf fag afgbe ecbaf geadb eabgdf egdf dagbfc ecagdb cbgdeaf | cbefa fg bdega gfacbed
+bag defba gcfdae cgbd gb eabgfc gcfabd dfagb gcdfa ecbgfda | begacf agb cgfade fcdga
+adgfcbe egd fgadeb cgbdae acdgb cgedb deca de efcbg acbdgf | cfbdag dcgba geabdf eadc
+cagdebf dgebcf edc abecfd egfadb fabed ec gadbc efca dabce | dec fbadec debac edc
+fcedg dfgbae eg deg egcb fgcebd efacd gfdcb gbfecda gdafbc | efacd ge cfgabde fagecdb
+dbag aefcbd gbc gcdbf bdcfa bg dfabcg ebadgcf cfgeba dgecf | bfaced gedcf dbag cgbdaf
+cdgfbea gd bdag gebca bdcgfe dgc fcagbe gabedc afcde cdaeg | abgcde ebcga dagb bgcefa
+cedgbfa ecabgd cdafeb bafcg cegdbf cae gdae gabce ae edcgb | aec cageb ecdgfb egda
+eacgbf afbdg gdecaf gafbcde gfc baefc bcge fcabg fdcbea cg | agfdb cgfba bgafc eacgdf
+fgebd fed bfea cbdeg decfga fe cfdgba defbgac dfgba afdbeg | fgdba abegdfc bcadgf fbegd
+adbfcg fagdbe bagec dc fbaedcg bdfag gbdca fcgedb dcfa cgd | fcad bfdgae dgc eagbc
+fgbaecd fgecd cafeg feacbg fdgcb fgaecd acdbge ed adfe dge | cfgdb gcedf deaf cfdbg
+gedab afdcbeg decabg bfedcg dgefab ef aedf cfgab gbaef efb | abcgf cabgf feagdcb cdbaefg
+fdb ebdgfc bd adefgcb efgad gbcd dfbge afcgeb fecgb dbeacf | bfd cgfdeba cafdeb gedfa
+abgde bdefa fagdbe fbadceg dgecab dfe ef edfgca bfdac fbge | fegb cagdeb ecdgab bdagefc
+febad bacged fge cdbeg cfebdag fgdc gf debcgf bdefg cfebga | fg egf beafd efg
+agdcbf bdefcga cbgefd dcagb gbedac faedc gfc bfag gfcad gf | bgfa dbagc bfgdca bcgad
+bdce gafbed gaecf bcefdag gbc dacbeg fcbgad egdab cb cegba | eadbgc cb ebadgf debc
+ac afgceb eagbf befcagd abcg degcf aefbdg ceagf edbacf acf | abecgf bgac gacb ceadbf
+abcg fcaeb gfdcabe ab befdc cfage gdbfea gecdaf efcgba bfa | bgac bcga cagb efgbda
+fbdeg gb fcdeb dfecbg eafgdbc edgfa eagbdc baedfc cbfg beg | adbgce dfcaeb bgfc abcged
+afg afdbec cbdgaf afcgedb bedgf cdagef ga afcdb gbca gfbda | cfagdb edcafg cbfgda bgfed
+edgafcb fdeab dgabcf cbgf gdfeac dgfab gdeacb acgbd gfa gf | gaf bcgf ecbagd agf
+dcbfa gfbace ebfca efcg bgfeadc abgce gbafde ef beadcg fbe | egcf fabdc adebgf bdcage
+gc cfdbe fgcebd bcgef ceg fdagceb ecadbg fgdc fageb bedcfa | adgcbe aefgdcb gabfe gc
+fgead bcdafg ba bcae edafb bcefad dbcfe cafbgde gbcdef adb | dcfeb gecdfb caeb bacdfe
+gfeab abc bc ecbf gdebaf gebac gdcea gecdfba acdfbg fbgcae | cbdagf gbcae bc edgbaf
+aecgf acbf cgadef fecbg bc ebc dcegba befdg aebgcf afdebgc | ecb bcgfe bgedf abcf
+fg facg efcagd eadfg cebfda feg daegb bdfcge afced cfeadgb | acdfe fgeda fg cdbegf
+gefda fed edfbgc fgeab cfad cdeag fd cebgad dcefabg fagdce | faegdc eafdg fd cgbfdea
+ebfad cf befca gabedc fac cabeg dcaefg abfecg fbacged gcbf | bfade fcbg fc cgbf
+aegbf cbdfega adbfg ef cebdgf dfcbga gebca fadgbe afde gfe | fdae afcbgd bgcedaf gef
+cdgab cg edgbac gbedfa gebcdaf dcebfg gcd degba aceg dacfb | gdc cgdba cdg gbadc
+daebfg fcebgad db gacbf feacdg gafdb eafdbc dgaef dfb bedg | cefdbag gedfca gafdeb befcda
+ecfd fcdgba cebgf fge bgafed febdcg cbfegad cabeg fe gfdbc | ecgdfb edfc gebdaf fecd
+fac gbeaf bcdga adgbcef febcda cfgba gefbda bagcfe cfge fc | gcfe gbcaf acfbeg acdgb
+afegdcb fdgba bfgacd fdcg fd cbfga adf ebcagf dcfabe gbdae | df bcaefd cfagb df
+cdbgef bgef ge ged badec agfdcb adgecf cgdeb cbgdf fdbceag | dcfgb gcebd egbf dcegb
+dfbea gb cfgea bag fgbc debcga acdbgef afcgbe gfeba cfdaeg | beafd bag cbgf gba
+fdgcab cd ebdaf baecdgf cda bcgaf cfebga acebgd cbdaf cfgd | aegcfb cdgf cdgf afegbdc
+fcbga cbeagf dcabg da dfabcg bdaf begcd dca fdagce bcgfdae | acgbd dbceg acd cfbga
+degacbf cf dcgfba adegbf efgab gfce acfeb dbeca caf gcebaf | bacfe abfecg ebafc debac
+bcaefd gbce dcegfb gcbadf dgfaecb fbdce dgcfe cg agfed fcg | dbgfec gc acdgfb efbcd
+cdfag dgebacf bdfagc fba acdgef fcdab bfdg baedc gbfaec fb | cedbafg fb dgfeac cadbf
+bcdgf eafcbgd bd adfb dcabeg gebfac gcfba gfdacb fdgce bgd | cfbga fgcab db fcegd
+cdgafe deg bedfc dfgb cgdbe dg dcefba efdgbc cagbefd cegab | bgdf abfdec egd gedbfc
+bg febdca edgcb cdeab gbc edgbca gdab beagcf cdegf debacfg | bcaedf dgcef badg fecadbg
+dbca cgaedb gcfbe cea fadbeg gabce ca edcafg degab abfedgc | fdebag beacg abcd adcegb
+gcdfe adbfgec cbafge dgbaf ebf gfbced eb adcgfe becd fgebd | ecgfba gcbfde dbec cdafge
+dbgeafc dacbg badfge abfce ed eda dcfe decba dcfeab gfbeca | febcda defc beacf fdgabe
+efcd bfcadge fcdba egabf bfdcag dcefba deagbc fabed ed edb | gbeacd fdeab ebcfad fageb
+dcgf fegdab bcaeg dcegaf dga gd dcfbea fcdea aedcg bdefgca | cbegdfa eabcfd adfce cbefda
+bf edfbgc cegbf bcadefg ebf acbfde gcedf feadgc gbcae gfbd | feb dfgb egbcdfa dfegc
+efgba eacd efadcg dcgefb gacdf dbcfgae efd bgcdaf edfga ed | cfbgda dgcfa gcfead eadfg
+afgdc fbg cdgaef fagbdc bgcefa cdbf bgdaf bdaeg fb dgabcfe | dagfc cefagb egcabf fcbd
+cadgfe acbed cfabgde fdbcge cfga fad fdeabg fa dcaef dcfge | fad bafgecd cfegad adbfcge
+agdefc cfad bdgecfa gadfe aefgc ad ceadgb gbafce bfedg agd | dag ad fcage cgbafe

2021/src/test/kotlin/Day08Test.kt

@@ -0,0 +1,22 @@
+package be.vandewalleh.aoc.days
+
+class Day08Test : BaseDayTest(8) {
+    override val example = """
+        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
+    """.trimIndent()
+
+    override val part1Example = 26
+    override val part1Answer = 303
+
+    override val part2Example = 61229
+    override val part2Answer = 961734
+}

utils/src/main/kotlin/be/vandewalleh/aoc/utils/input/Input.kt

@@ -8,7 +8,7 @@ class Input(private val value: String) {
 
     class Mapper(val value: List<String>) {
         val ints get() = value.map { it.toInt() }
-        val longs get() = value.map { it.toInt() }
+        val longs get() = value.map { it.toLong() }
     }
 
 }