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authorjacopograndi <jacopo.grandi@outlook.it>2022-01-06 18:33:02 +0100
committerjacopograndi <jacopo.grandi@outlook.it>2022-01-06 18:33:11 +0100
commit72a3388c042f4812e2db33f6d6a1b757392a18a6 (patch)
treec3d56aad98eefd7114809c969e1e3613f4604d12
parent25d2986b09bd348d58da878f0da8151b3363b534 (diff)
day08
-rwxr-xr-xday08/day08bin0 -> 84872 bytes
-rw-r--r--day08/day08.cpp72
-rw-r--r--day08/day08_input.txt200
-rw-r--r--day08/day08_input_ez.txt10
-rw-r--r--day08/makefile2
-rw-r--r--utils.h14
6 files changed, 298 insertions, 0 deletions
diff --git a/day08/day08 b/day08/day08
new file mode 100755
index 0000000..7f591be
--- /dev/null
+++ b/day08/day08
Binary files differ
diff --git a/day08/day08.cpp b/day08/day08.cpp
new file mode 100644
index 0000000..30b818b
--- /dev/null
+++ b/day08/day08.cpp
@@ -0,0 +1,72 @@
+#include <iostream>
+#include <fstream>
+#include <vector>
+#include <string>
+
+#include "../utils.h"
+
+int distance (std::string a, std::string b) {
+ int d = 0;
+ for (auto k : b) {
+ if (a.find(k) == std::string::npos) d++;
+ } return d;
+}
+
+int map (std::vector<std::string> tries, std::string dig) {
+ if (dig.size() == 2) return 1;
+ if (dig.size() == 3) return 7;
+ if (dig.size() == 4) return 4;
+ if (dig.size() == 7) return 8;
+ if (dig.size() == 4) return 8;
+
+ std::string one = *std::find_if(std::begin(tries), std::end(tries),
+ [](std::string &str){ return str.size() == 2; });
+ std::string four = *std::find_if(std::begin(tries), std::end(tries),
+ [](std::string &str){ return str.size() == 4; });
+ if (dig.size() == 5) {
+ if (distance(dig, one) == 0) return 3;
+ if (distance(dig, four) == 1) return 5;
+ return 2;
+ }
+ if (dig.size() == 6) {
+ if (distance(dig, one) == 1) return 6;
+ if (distance(dig, four) == 0) return 9;
+ }
+ return 0;
+}
+
+int main (int argc, char *argv[]) {
+ std::string raw;
+ std::getline(std::ifstream(argv[1]), raw, '\0');
+ std::vector<std::string> lines, parts;
+ split(lines, raw, "\n");
+
+ std::vector<int> count;
+ for (int i=0; i<8; i++) count.push_back(0);
+
+ int sum = 0;
+ for (auto line : lines) {
+ if (line.size() == 0) continue;
+ parts.clear();
+ split(parts, line, " | ");
+
+ std::vector<std::string> tries, digits;
+ split(tries, parts[0], " ");
+ split(digits, parts[1], " ");
+
+ int i = 1000;
+ int num = 0;
+ for (auto dig : digits) {
+ count[dig.size()]++;
+ num += i*map(tries, dig);
+ i/=10;
+ }
+ sum += num;
+ }
+
+ std::cout << "digits: " << count[2] + count[3] + count[4] + count[7]
+ << std::endl;
+ std::cout << "sum: " << sum << std::endl;
+
+ return 0;
+}
diff --git a/day08/day08_input.txt b/day08/day08_input.txt
new file mode 100644
index 0000000..cf25f77
--- /dev/null
+++ b/day08/day08_input.txt
@@ -0,0 +1,200 @@
+bfdcga cgdfe egfda cbfeda ec efc gcfbd ebcg gdfbec adcgfeb | bgdfc ec dfgae gefcd
+cafgbd bc gfdbae eacfb cbf debaf cdgefba fecag fbcdae ecbd | cdfabg cb adgfcb bface
+afg daecgf aefbgdc fbge fg dabfg efabgd cbadge abcfd gbaed | acbdf egbda adbge fg
+cbeafg fadce cdeabfg gbdefc ged ebcgf bfgd dg ecdgf bgedac | fgdb afcbeg gcfeba edg
+efd aegdb efgdcb bafcd acef dfaeb ef fgbadec cadfgb bfecda | fedgcb begcfd def gfdbac
+badce gbcda gad fgdc acbgf cfbage gcfbad gd dbafeg afcbged | ebdfag dfcbag gd fdeagb
+gdbcaf da dcbeg cad edcbfg gdea baedc afbec baegdc gbfaedc | gbdcaf dbgec da gaed
+bedga agbefd dbgfca gcafdbe begcdf gdabf abegc deb ed adef | bgade gacbe ebd cbefdg
+eg edfcab gfde abedf fbgdea bgcad gefcba agbed ebg eafbcgd | ge fbdeca bdcfega cgadb
+dgbaecf fegbd de fbgade fde gecfb ebda dbgfa dfegca dfagbc | afcegd fgdabce de efgdac
+dgafe deafbg gdecbfa fgcad beagd gfbcae efa dbfe ef dcgeba | gafedb debacg ef dfbe
+gbadcf bcade efdgbac bcf acebf bf egcfa ebdf acbgde cdabfe | fbcea eafcg fcbea dcbafge
+dcfbge ecdabg gfbdae afecb cbg cbgae gacedbf gadc cg bedag | bgdae becga bdcgfe ebcgda
+bde eb cgbfade cdgbef beag gabdf dafeb cadfe agdfcb eadgfb | begfdc dfbcga abfdg edagbf
+dcbgea fced cgeaf cfaged gdeac dgbfca fc badgfce cfg egbfa | fbcdag feagb cdef fcg
+gfdbc adebcg cbg dfcaeb cg bcaefdg bdgfec bdagf dcfeb egcf | fbgda aedfcb cfgbde defgcb
+daf cagfeb adeg dcbef cdgbaf da efcag fbdegca ecafd dcaegf | da bgeafc bgdfac ecgdaf
+gfdaeb gfde agebf bgf fg bgcfad afbde fdaecb dbeacfg eabcg | gecab baedf eadfb gcbdfa
+bagcfed eafb acfgd cebdfg ead agbdef baedcg egfbd agefd ea | gacfd bgfed fgdae bfdeg
+cgfab adcfebg cgdef eabc feagbd ebcfg feb eb bdfcga gbcfae | defgc bdcafg fgdec cegbf
+cdfab gdf cfebg decbaf gd dcgbaf gcbfd cgad egdbaf badcfeg | gfcbd gd cbgfe ecbafd
+faebd ba efacgd baedcf adcef abf dcfbgae dbac gdbfe begcaf | dcab dafec fecadg ebdfa
+dfceab egbadcf ba fdcbg feba cgdfae dbegac abdfc cba ecfad | defacg dgbcf gbdcf efcdbga
+cadgb bedg fgaceb eacbgd egbac cefadg gd cafdb eabgdfc gad | afgdce adcgb gbacd adg
+acb adcgf adcfeb baedg cb becagd bfcadge abcdg ebgc gfdeba | gdafc acfdeb cb aebgd
+fabcgd fcdgae facde bcafeg da geda gcebadf befcd eagfc adf | cfage fgeac fgdbaec fgeac
+bafeg fabcdg efdgabc fgdbea gdae ae dgafb bae ebgcf fcadbe | begcf abgfe aegbf efbadc
+fdeca cadegbf gce bafdge abcdeg dcgb ebcfga cg deagb dagce | bdeag aebdgf gce dbage
+fcgbde cdgaebf dgbaef fed bade ed adfgb efdag fdabcg agefc | gfdab adbcfg gcfae dfagb
+ebdgfc febad adbfc fc bdfcea badfge cfb eafc acdgb egcfdba | acbgd bgfead dfabc fcea
+eb ebaf cbdgef gaedb afgebdc febdag dgefac agbcd beg deagf | dgfcea efabdg egabd geafd
+cedfba efgbd gfbdac gfaecd bfa gdfba bcag ab cgdfa begdafc | dfbace dfgeb eafcdbg dfcag
+cfdbge gdbefac dabf dgbcfa gacdf gebca fb agefdc bcgaf fbc | afbd gbcafed acgeb ebgfdc
+fgbec fbgcd fdbaceg gafedc bfacge fge eafb agbced cbgea fe | abgce fadegc ebacg fagecd
+bdgec bgecfa fcbed debfcg acebfd gcb adbecgf gb aegcd gbdf | ebgfdc geacbfd gcb gb
+fbea bdfcag dceabg egfcd edcfbga abdge af adf dfbage egfad | fa deacgb agfdbce ebdag
+abdecfg gbacf fdbcge gfd dg gdafbc adgb acfde fadgc fbeagc | dcgebf dacgf agfbc cdagbf
+agcefd ged bdfagc ed ebdgf fcdbge dgfbc abegf cdfegab debc | cagdfe ged cgdafb bafdcg
+cebgad fdgea abgf fdbcae af baedg dgfeba dfbagce edgfc fea | dabegcf agdbe afe acfedb
+agdfe fedbcga gfedbc agcbe edb db fdba edbgaf gedafc abdeg | cdgabfe afegbd fegbcd eafgd
+dea abgdfe edgfbac egdab de cadbef adfbg gbcea gfde dabgfc | cdafeb ed bafgde ed
+adgfb cdgefa ea fea bcdef cfagbd fgecabd febda agbe fgabed | cdefb gbea bdacfg dcbef
+cadbg ea fdgeab afcedg dae ebcfdga cdfge afec dbfgce ceagd | fbeacdg dgcab bgdca dae
+ecdbfg caebd fcgde fgda aefbcg afedc fcabegd aef gcdaef af | ecdfa bdecfg fea dgcfbea
+dbcagf afgec fcadb ead daefc dbcgae edfb cagbdfe fcdbae de | egdabc fdagbc cgafbd afdec
+dgfabe egdcbfa beacdg dbcfg aefc cdbaf fbadec fa aedbc fab | eacf bcdfg efca ecbad
+defbgc gbdef cg edgc egbadfc cbgef gafdeb gcf eacbf gbfdca | fbedg decg cgf egfcb
+cfdgae abdgf gbcd cfdaeb afebcgd cafgd bdf bcfgad db gefba | egfba decgfa abfeg eafdcg
+dfagb gdbface adefbc gbfae gae begc acebgf fdgeca ge cefba | cgefab dfgace fecagd beadfc
+fedacgb ed cabdfg bfgade dbaefc gdfba def gead bgcfe bdfeg | adcefb gdbaf egad caebdf
+agfbed ecfbg cdge cgb fcgbde ebcaf adfbcg dcegabf cg efdgb | bdfcga bfeadg ecgfb cg
+bec becfdag bgcaf eb debf adcef cefba fbcade acbged fcadge | edacfb fdeca fgabc cgafb
+bfcae gabc fegcdb adefgbc bcgfae gfb fbgea fdabec adgfe bg | dfcgeb fgbae fgb bedgfc
+afedcbg ed dfagc gefcd dec agbdec bfecg gfedca efad dfabcg | edaf dec begadc dfagbc
+cgebd befcadg ecg ec fcde dbfgc fgdabc becfga aegbd bfcged | cbgafd bcgfd fedc gfdbec
+dfabeg acfebd bgfcde begfd bcagd cdafgbe gabed aeb fgae ea | gbedf gdebfa bfegcd bgefd
+gdf dagec gf cfdbega cfdba edbcga ceadfg fcdag aegf cdbfge | eafg fgd dfg bdegcf
+bcfae fabge cdegabf cdae ebc dfcba ecbdfg ce dagcfb fbedca | fdagcb bcedfa fceabdg adce
+cgbaf ad fgcadeb cbfdae fbgdac bgda egdfc cefbag adc fcadg | cfdgbae adc ecafgb dgabfc
+bafdc cfb cf abcfged acdbge dbgca aefdb afcg afcdgb gbefdc | dabfc cagf efbcgd abecdgf
+de abgefdc fbed adbcgf gaecf eda aebdgf adbecg fegda bfagd | feagbd dbgfac ade adgfe
+gacefb faebcgd decfgb fa abdgfe afb fdbge dacbg adfgb edfa | dgbac abcgd gbadc adbgf
+fbadg fgbde fagebd agbcf gad gfcbed abde da cbdfaeg afegdc | ecfbdg agd efdgcba aefbdg
+cbdge gfecd cfe cafgd dbfe fe bgefdca gedfcb gebfac dgbcea | dgecb bagcfde gecbaf gacbef
+dfgecb agbfe dbeacf ebcdf cbad cadfbeg ca cfa abcef edfcga | afgdbce cabd fcbdae becaf
+abcd fbade befdcag da fecdag ecfdab bgfced bfedc dae gbaef | da ebfdc cabd cfedbg
+ecdab cfaged cbfd cfebad begda agbfce fecba cd acd fedcbga | cfdage daecb febca ebacf
+fcdageb beadf dag dacfbg bacge deabg dfcabe gdbaef degf gd | bafcdg dgafbc bdaef gd
+febcg cefbagd fegdbc bfeac ab gcba bfa fdbega cedfa cgfeab | eagbcf cbgef afb fcgbae
+egfac acbdge fadcbg bgcedfa bdcafe bf ecadb fdeb fecba bfc | fgdcabe dcbfga aegcf fbcadeg
+gcfebd acdgb faedcb gcdfb fd gdfe fcgbe fgacdeb baefcg dbf | cgfdb bgdcf gabcd edcbgf
+aced fbacg adbcf cd fbade cdb decfbg faegdcb gedabf ecdfba | bdfae fdgcbae fdbgec fdecgb
+gdbeac dfcaeb afbgecd dbcgf af fbacg cegbfa fba cagbe geaf | fgbdcae eabcg caebg afeg
+ebfda dgfbe ae fcbgead deafgc fdbac eaf gaeb ecdbgf ebfgad | baedf debgfca efcbdg ea
+dgcfe acbef cgaef fbdgace ecafbd gcebfa ga age gdfeba bgac | adfbce ga cegfa abcg
+abcgd facd fag eacfbg gafdb fa bgfacd dcgeba befgd efgacbd | bdcegfa gbdaf cbgda egabcfd
+bdefcga aecbg cgde agbed ecabfg dgb befda gcadbe gdbcfa dg | acgdeb dgb bfaed adbeg
+cefgb bde adgceb dafgebc aefd debgaf gfedb agfdb de cgdfba | defa edbgf afbdg bgfad
+fa caefg egcab fca gdbcea abef bceagdf dcfge acgfdb afbgec | abfe faebcg acgef geacf
+cbfed egacdb eabfgd gdbac deacgfb aeb eacdb gacfbd ea cage | dbegacf aecdbg cage dcgbae
+efgad agedcbf bcea ba ebdcfg efbcag bgaef gfabcd bga gfbce | fgdae ba fedgbc egfba
+dbcfa bcagd gdbfae cdfg fecab bcfadg dcbgae dfb fd bcadfeg | daegbc befca cbfae dbgcae
+egfa bcgdafe dcfea dcfeba cafgbd gf edgbc gfd egfdc edcgaf | gf dgafce fdg efcbda
+fgecd afgcde gfcadeb dbcg dcfbeg facbe gbf gfbec gdeafb gb | abdgfe cegdf bgf ecgfbad
+gdcbafe gaf agcfe bafc gfdcbe gbfdea cfegb gaedc gfbace fa | bfeacg acgfe bcaf gcade
+egbcf fgcea decbf dgabef gb fabedc fbecdag fgdbec bcdg beg | bgdfaec acgdbfe defbca fcdeb
+bdeafc cabegd acdbe fdba cfb bf edcfagb fecag cbafe bcfgde | bfda fdgaebc dbaec fb
+bc ebdcg agcfebd cadeg ecb fdbaec befgd cbdgfe gabfed bgfc | dagbef bcgdfe bgedaf gdace
+eb ebf gaedfc fagdb cabe fabecg bagef bdgafce cgdefb efcga | beacfgd efgbca efbgca ebfgac
+cagdf gdacef fcdbga cb gcadb bgc fcab dbfcage baged gbdecf | aefcdg cb agdfc bdgfec
+dfbaec abegdf daf edbgcaf bgfd eafgc gafed fd bedag gebdca | ecfgbda beafdgc facebd bdeag
+bfaegd dbecga fcadbg dcfg dabcg gf acbfe fgbca fga aegdfcb | cegbda ecabdgf egcafdb fgcd
+dbgcea agc aegbc fgceda abdfce cbdg begaf adbcefg cbade gc | dfecba gbedac cdfeab abecg
+cfdeab fgbec eadg bga ga dcebagf beadgc gaebc bgfdca bcead | bgaced bdeacg cbgea beacgdf
+bagfce ebcdfg fa cgade cfa bfcgeda ecbdf adfb fecbad efadc | ecdbf cfa bfceag bdfeac
+af egdaf aef eacdg fdgeca cafg cdgfabe baedgc edfbg acbdef | edfga decagb bdecfa dacfge
+dab gfbed bfdage ebdcgf baecg da dfacbeg eagbd beacfd gadf | egbda cbdfae cfadeb egabfd
+bcgfaed bfgade bd gfcda acgedb bacefg caebg cbed abdcg bdg | cebag fcebag dbcaeg gbd
+dgcfb begdf def fbaegd fegab ed cebagf cefdgab cebdfa gade | ebgdacf aefbgd de gfdbae
+ab abdf agbcde aegfb eafgc fgcdeb fbged bea bgafced efdbga | gbafe gbafed gaefdcb gdfbec
+eafbg abgdf eg aceg gabfce fge fcbedg ecfabd bafdceg caebf | cedbfa gbface eg fagbe
+face bfe adgfeb acebg cdbfg fe gacbdfe gcaedb cgebf cgaefb | aefc gdbcf gecab gfcbd
+agfecd fa gbfa fbdce gdfeacb dabfe fbadeg bgdaec begad afd | fda bdefc egadbf fa
+ab bfedcg gfdcb deacg abdfce gcabd adcgfb eabfcdg abc abgf | decga debfac fcbdg gecdbaf
+gfadcb dcgab abfgde fdcega acd adbgf cgdeb ac acfb befdcag | dbagf ca gdcfab gaebcdf
+efcagd dbcef bgda gbf dfaegb cfegab bfged bg agcfbde afegd | bfagce cefdb fgeda aegfcd
+cedafgb cbfeda bcegf gdbe gb fcgbad cedbgf gcaef bgf cefdb | ceagf dbfcge afdcbe ebdfgc
+cgfed acfge bdecaf fdag fecgad fedgbc bacge af efa afegcbd | cgadbef gbdecf fgced fa
+abegf fagcde ceb feabc ecfda cb acdb efcgdab cbgdfe ecadbf | eafcb ceb cadb bdeafc
+fbgae begd abcfegd bfeda efd eagfdb de fgaecb acgdef dacbf | dagfce adefb bdfac dfegab
+fd fed fgad dfecag gaedbfc gecafb bdceg cbdafe efcgd fcega | agfd dgaf gdafce eafcdb
+befagd dfeb bf caebdg ebgda egfcba bgf gcadf gafbd fabgdec | agdefb eagcfb edacbg badfg
+eagcd bdacgf gfeb fdgba be deb cefagdb afcdbe bdgae aegbfd | cfbgad dbage eb bgeadf
+eacbfg debgac dbfcage dc eagbc cda cabdfe dfgea bgdc adegc | becag efbacg caebg cdgae
+fed fcbagd acdebf gaef ef fgdec fecbagd dcegaf cbdeg agcfd | bdeacfg ef cadgf dcbeg
+efc becdag afedc edgaf fc badgcfe fcdbge adfcbe cafb eabdc | dfebca acbed fc efacd
+abfed dc fdcegb cgbfe cagfeb fdecb gbcadfe bgadcf gcde cdf | gecafb fbegdc febcdg cegafb
+feagc daecfbg gdca dg fgd fdgec cebdf eagcfb efcgda fbdeag | defagb aedbfg gfd faegbc
+cagdf ce bcegdf dbafeg cbeadf gbdaefc caeb cfe feadb efadc | ecba dcfae ec ce
+fgabd abgdc dbcae cfadge cag cbge cg ebcadg cgfdeba fcbeda | dgabce dacegf baecd cfabed
+efagc fdcgea geb bfdgec cgba fdcbgae adbfe bg bfcaeg fgeba | afegb daebf ceagdf agbc
+ecgfbad ceg deca gbfed bagfdc cegfba cabdg ec agcdbe bdegc | agbcd ecbdg bcadg dcagb
+aedbg bedca efbdag dgcb bfeac efgadc abegdc bfdegca cd edc | cbdae edcgfba ecd fdagbe
+cfeagbd cfab bgc fbgdae fgdce gfadb bc ecadgb bcdfga gdbcf | cbfa cbadgf bfcdg abcf
+edacg cdfbag fbeagdc cdgaef fc bagfe fac edabgc defc gcefa | dagcfb aegcf fc fegac
+gfdabc dbgaef agbe cegadfb bdgaf gedafc fbced ge gfe befdg | dfcbga adbfge bdfeg cfadge
+bcafge gbcd bc bfgdea cafdb fabdg acfdbg acefdgb acfde bfc | bfdac cbf fdabc edfca
+gdcab cegd ebdcfga egb eg afceb cdgbfa acbge gdebaf bgcdea | agbce fceab dagfbe acebg
+bagc cgf bacfd begfdc afdge bcagdf bcedfa cg becgafd dgfac | bdacf cfedab abcefd cafbd
+ca cag gbfdc cadfbg eafcdg afcb edgab dgcbef cbgad abfdgce | cdbga bacf fgdace dcfgb
+dcebf aefcbd gdcf fcbgde cbgef beacg gfebda gf fcdbgae feg | bfcadge cfbeg fg becgf
+dcabfeg fbc cfgba dfabgc becadg fc dgebcf cfad cbagd gbeaf | ecadbg degabc aecbgd cf
+cba efabd ebdcga cgeafbd cdabf fbce dbfcae bc cgdfa egbafd | abedf facdg ebcf cb
+db efdcag dabf cagfdbe caegb decba bfcdeg fcabed fedca bde | edfacb adefc dbe dbe
+fdabg efca bac ca fdacb becafdg fcdbe bcegad begdfc afbdce | gecdbf faec fadcb dbcaf
+eg egad egfbadc bdecf feg agfcbe decfag dfceg cfgda cfbadg | fcabdg gef eg fecadg
+fgad bgfde afe acebd dgfcbe af beadf ecabgf fbcedga abefgd | cbdegf edfab fegacb fa
+efcgb beacfg gbecfda bfac afg dbfgce bfgdea fagce caedg af | gcebf aedfbg eafcbg fabecgd
+bfdecga gaedfc ecga begcfd cfdab gbfade efa caedf ae defcg | daecf egca afcdeg caefd
+decab efa dagefbc dagbce fcadg abdegf fe eafdc ebcf dcfabe | ebcf fe ebcf fae
+begfd agedfc dabfce eadgf adf eacgfb afecbdg da feacg dcag | abcdfe daf debgf dbfeac
+gbdfca gbefca cba cb ebcfagd gbafd fdacb fdgeab bcdg cadef | afbdc efdgabc dbagf gfdab
+efdagb dae fcabedg caedb fdaecb ad ebdfc cdgfeb dfca eacbg | bedfgc fecdb edgfba cedfab
+cd afdc cdg cbdgaf eagbd gacfb befdcga bdacg cbeafg ecfbgd | bdgacf dcfbeg dacgbf dagcb
+begdaf gedbcfa dafc fea dfgce dgacfe gbedfc cfeag cbgea af | gecba agfbedc cbage egfdc
+dc fgcd baefcg afbgecd bgeda ced baedfc cdeag gdafec efgca | bacfge bgdae abegfc afgbced
+fc afcbgd bcf afebcgd bgdcf acdf bdfeg ecbagf cbdega adcgb | ceagbf befdcga edfagcb acdf
+dbcgf degc bfgad bcfed gcb fceabdg gbfcde gc fbdaec afgebc | fecbdag fadgecb afbdg dgecfb
+abcfg cfb eafgb bc cgbfda adfcge afdcg cfbgde cadb efgbcda | acgfb cb dfcag gdecfb
+cdefb cfga edcgbfa cab abfge acfbe ca bcgaed bcaefg bdegaf | dbfce gdfcaeb fedabg fbcea
+fgcae gafd eacdfgb baceg cadebf cfbged daefcg fge fg fceda | gceadbf dcbfage cafed ebacdf
+fabdceg abcgde acebdf cfaeb fa egfcb dbfa fac abecd agefcd | cfeab edcbag acf dcabefg
+dgbecfa abdfe acegd fdgabc gadef gfce ecbagd edagcf fg dfg | gdf fcegbda agcde fgd
+dagf bcdaef ad acd cbeag febagdc dgbfac dgcab fcdbge bdgcf | fdbeac gcbda bcfdg bfcgd
+fgdc gc gefdcab bdgec dbcefa gce bfgdec gcefab degab cebfd | bdfce gbecfd gadbe ebcadgf
+fagc bdcfag fdacb agbedf daf aedgbc dbcga ebdgcfa cbdfe fa | febdc cfag af cadbg
+bcd bfec dagbcf egcbfd bc edfgc bdecg edabg dcgeabf gdefca | bedag dbc fgcdbe ebdfcg
+gedafcb dbagcf bcadeg fc gfc cebf edgfc cgdbe bcfdge egdfa | fc dabgec bdcge ebfc
+gafbd ef becga ebgcaf agbef gfe gebcda gbfdce afce dbcgefa | ef gfe cabfeg gabecf
+deab fbedgc eb bdacg dagcfbe abecg cfdagb beg baedcg gacfe | gacdb dbfgace dbea cadbg
+badceg ced fecba fbdc adfec ebfcgad gecafb faedcb gfeda cd | fcead fbcaged adebgc ceabgd
+bd bdcg fgcab abd cfaebd baecgf fecbgad agdfb efdga gfdacb | afebcd bfadg egbfca cgbfea
+da decbf afdec begcad dcgefb gcafe edbfca dca fdab begdfca | efadc abdf ebcdfa fegac
+gcbeaf geadbc fdbeagc bfdec cdbae ea agfdcb dabcg eac adeg | gcdba cebdf abecd gedcab
+bcdae abedg ebg bfadec eg dbgaf egafcb gcadeb egdc abedfcg | dagfb ebg gebcaf eg
+afb abgfed caegfd cfbd becag dcbgfea bf decaf faecb bedfac | daegfb dbaefc gacedf bfa
+bgecf becfad ea adebgc cfdbgea dabcg eca eagd acbeg adfcgb | agdbc bagcd bgcda aedg
+bf fagcde cfdb acfgd gfdaeb acdfegb gfacb bfg bgeca bcgafd | gfb gfacd agfdeb abcge
+aegfd efcd bedfagc bacdgf gecadf aed egbdac fcagd ed afbeg | daefg dagfc acdbfg gbacfd
+decga efbcd badcgf cfgdbe agefcbd fa ebcdaf fcdea eafb fda | dcfea fad ebadgfc afedcb
+bf gebfcd bagfed bdagcfe cegbd fgbdc gfb ecgbad gdafc befc | fadbeg bcgde gbf bfg
+df cbfged fgbca fbd bcafge bdeac agbfecd adcbf gdaf dabgfc | bcdea cafbd afdg gacfb
+ecdbfa fadgce aceb fgebd bfcgad cdfae afgbced dfebc cfb cb | cfead fcb bc bedcf
+fdbega cfegd cdbgae cdfebga fecadb aeg cbag ag adceb dcage | ebcagd gcead egdfc dagecb
+cdbfeag gfdeba edfgca cead geadf gac fcbdg afgcd cabegf ca | fecgad gefda dafcg fdgca
+cfgbae cgefb egdbfc dcg dfcbg ecbgfda badcf gfed edcgba gd | gd cbefdg adbceg badcf
+bf bgf debfg bgade egbfcd cebdafg agdfce fgced dcbfag fcbe | adcgfe fdgeac fb ebfc
+gefdc fdagcb gfdac bdafce caf ac daegcbf febgda cbga dbafg | dagbf ac faedcgb dfagb
+ecfgadb dbgacf abfegc gd cefad fcgde cefdgb fcbge gdeb dgf | efacd bcegdaf bdgacf gd
+cdfgb bdf fdcag bd cdba gbecf dfecga cfgebda gdefab dcbagf | begfc bcgfd gfbce afbgcd
+fbe facb decgaf afdce fb bcdeaf bagdfe ecdbg dfbce bgedcfa | abdgfe eafdc efdbca acfgde
+bgdcf cbaegd eabfdcg ceg eg aedcb deabfc dgea gfcaeb gecdb | eacgdb ge daebcf eg
+egbdcaf gd cefabg dfge bcfagd afdegc caedg baecd gad caefg | gcedaf efgabc dag deagc
+cdabf bgcfde afedgc fcb gcba gfacd bdaef bdegfac cb bdfagc | bcf bcedfg gaecdf cdgeabf
+gf dcbfeg fcgdbea fge gedacb aefbg bgead gfad dfegba aebfc | aedgfb gf egf dfag
+gbeacfd gacbd dcgfbe fg fgd dbacge bdagcf dfcea gafb fgadc | deagcb gf degfbc edcgbaf
+ce gdbcae debcf cfdabe eacfbdg acef fgdbc begadf ecd afdbe | dbefa abegdc cbdfg acfbed
+begdfc gbdc gedaf dc edgfc cdf fgbec ecdafb ebgafc degcbfa | egdfa edgbfca cbefg fagcbe
+efcab dgbfc ag agdc cfagbde fbgeda fag acgdfb fcbga gbefcd | gacd gdac dcag gdac
+bdage bdaefg gbe eb edfb bgafec dgbecaf egadf fdaecg dbacg | geb afgdbe dfbegac efgcba
+ecgfa bec be ebfgc dgbcea adefgc egafbc egbafcd bafe gbfdc | aefb bce befa gfecab
+ebgdc cbe ecdgab gacb gfced dbgea edbcfa fagcdeb gabfde bc | dgfec aebdgf abcdfeg fbaedc
+daegbf adef dgcabe cafdgbe adcgfb dbegf ebgcf dbf ebadg fd | fcbge bgcef acfgdb efbgd
+cdbge cfe adbcef fedgcb gfebcda cedgf edagf gdbcae cf gcfb | cdbeg gcdfe fabgdce aecbfd
+beacg dafge gbeadc fcba bgdeafc begfa bf eabcfg ebgcdf bfg | gaefb bcfged degcab egdaf
+acgefbd feb bf cdaef beadf gbaed abgced gabdef abfg gbfedc | begfda efcda bfe dgacbe
+eacfgd fbdgce abfcge bcfea cafeg cagdbfe ebf debca bf fgba | fb fb acdbe cfdage
+bfec cedagf aef ef degba bagcef dgcfab fgeab fecdgba bacfg | cbgaef efacgd aegfb aef
+dbacfe edfc ec caebd agfebc cbe cbdag gfcbead bgfead bafde | deabc dfagbe cgbfea ec
+ed dfgbec dfabg fbaec feacbg edafb aedc eadfcgb ebdacf dbe | deac bgeafc cebfdg fcdegb
diff --git a/day08/day08_input_ez.txt b/day08/day08_input_ez.txt
new file mode 100644
index 0000000..c9f629b
--- /dev/null
+++ b/day08/day08_input_ez.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
diff --git a/day08/makefile b/day08/makefile
new file mode 100644
index 0000000..5c81ee3
--- /dev/null
+++ b/day08/makefile
@@ -0,0 +1,2 @@
+all day08.cpp:
+ g++ -std=c++20 -o day08 day08.cpp
diff --git a/utils.h b/utils.h
index f713da8..b96f570 100644
--- a/utils.h
+++ b/utils.h
@@ -9,4 +9,18 @@ void split (std::vector<std::string> &vec, std::string str, std::string del) {
} else { vec.push_back(str); }
}
+// trim
+static inline void ltrim(std::string &s) {
+ s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](unsigned char ch) {
+ return !std::isspace(ch);
+ }));
+}
+static inline void rtrim(std::string &s) {
+ s.erase(std::find_if(s.rbegin(), s.rend(), [](unsigned char ch) {
+ return !std::isspace(ch);
+ }).base(), s.end());
+}
+static inline void trim(std::string &s) { ltrim(s); rtrim(s); }
+
+
#endif