commit 3242b5e61240e528891c546de4d860133caf7d9d parent 28bc5515d589db4d76490959f10e62829500a151 Author: bsandro <brian.drosan@gmail.com> Date: Wed, 8 Dec 2021 08:54:48 +0200 Day 08, puzzle 1 (zero brain cells edition) Diffstat:
| A | day08/Makefile | | | 26 | ++++++++++++++++++++++++++ |
| A | day08/input.txt | | | 200 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | day08/main.c | | | 34 | ++++++++++++++++++++++++++++++++++ |
| A | day08/puzzle.c | | | 54 | ++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | day08/test.txt | | | 10 | ++++++++++ |
5 files changed, 324 insertions(+), 0 deletions(-)
diff --git a/day08/Makefile b/day08/Makefile @@ -0,0 +1,26 @@ +NAME=$(shell basename ${PWD}) +CC=cc +SRC=$(wildcard *.c) +DEPS:=$(wildcard *.h ../common/*.h) +OBJ:=$(SRC:.c=.o) +CFLAGS=-O2 -std=c99 -Werror -Wall -Wextra -I. -I../common +LDFLAGS=-lc + +all: $(NAME) + +.PHONY: clean run + +clean: + rm -f $(OBJ) $(NAME) + +%.o : %.c $(DEPS) + $(CC) $(CFLAGS) -c $< -o $@ + +$(NAME): $(OBJ) + $(CC) $(OBJ) -o $@ $(LDFLAGS) + +run: $(NAME) + ./$(NAME) input.txt + +test: $(NAME) + ./$(NAME) test.txt diff --git a/day08/input.txt b/day08/input.txt @@ -0,0 +1,200 @@ +ec cabfe afebd dbagef afbcg feabcd cdef eafdcbg ecb caegdb | ceb ecb febac ec +acfdg ea baec dgbafec cfebg efa cfebgd dfbaeg egcaf abecfg | bgcdfe ebac cadgf dceagfb +gfed caefd dcegaf ge daegc bcdag dfagbce cfbead gce afbegc | ceadg edfg gdbca fcead +ea dgfcae feba cae efbcagd cagfb gedcb gbfcad gebca afbceg | facbgde cegdbaf cgabe degcb +gcbfed bdf cbdfgea fgeabc dcfab caefb db caebdf abde fgdca | fdb fabce dbacf afceb +bacf afg egfab dcbgef bcegdaf efgbac efcgda fa gbfce gebad | edgba bfacged af fdacbeg +adgef bagcf cdea adfebg dfgca adfgec cd fcdgbe cdf cdfegab | afgdbe facdg gdfbeac dcea +cdgeb cd cdb gfecbda adgcbe bcdfag aecd bfceg edbfga agdbe | bdc dbeacg dceabg gcedb +ae cdbeg gefcdb eca ebgfac dcbafeg deag abcde facbd becadg | aec cbaedg aec deag +gabfc cdfbe ea dbcfeag aebfgc befagd ebfac aeb gaec bagdfc | ea gbadfc dgbfca decbf +bcad cd cfbge cegabdf fcdeb defabc gebadf fdc adfbe ecadfg | dc fcd egdcfa dc +begcda cbf egacb fc ebcaf baefd gabdfc gfce gaecfb acgdfeb | bdegfca cf fc acbdeg +fbgce dagcbe eafcbg bcgdfe geacdfb efdb dcgaf dge de gfdec | cgbfe bagced daecbgf bfde +fdgae fce cdeab gcfd fc efdca eadfgb fcgdae efdcbag gaefcb | efbdag fgeda adbfeg befagc +cfag cadgfb cf cfd cdbgf gaebdc bgfde cgbfead befacd cadbg | gcbda fcd bfged dcf +gebf edbcga edcabgf cfabed aeg agcfeb fgaec ge cgadf ebafc | abcgdfe gafbce cfagbe bgfe +aegbfcd gbacef bfea bfg efcag cfbge bf fcdega bedgc gbacfd | bcagedf bfea acdbefg faceg +dcf df aedf ebacf egabfcd fcdbge acfbd adbgc dfabec afgceb | caebf dcf dcf ebcagf +bgad abcge dbcfgae bcfae gecdab eagcfd ag cgdbe gae bcedfg | adbg gdba ga aeg +cega begfdca bdcfea febcg bec fbadcg fgbeac ec bfgac fgbed | ec gadbfc cbgfa bgcadef +fegbac debg bgc cadbg gdefca efbagcd dbgcea dfbca caegd bg | gb edgbcaf gbc cbg +gbefc badecfg acgeb ecfgba cfbgd bef ef acbged caebdf afeg | gefa ecdbafg gbdfc cegfb +gbefca gcdba dbfeag ec gbfae becf gdafce fegadcb aegcb aec | gebafc befcga gfadbe cgeab +cegadf cafg gdeca fdbcae fadcgbe gdc gc cbefdg ebgad fcdea | acdef gbcdef agcf cgbdaef +gcdbef eagdbc ecbdg afecgb bfc fbecd geabfdc fb fbgd fdcae | bcf cfdegba fb dfcbe +gafed badfce db dcgb dab dbaeg dgafceb acegb cabedg aebgcf | afdge db bcgaed cbaefd +bgcda gdfb fecbda gb cbg bafcgd gacbdef bfeagc cbafd dagce | gadec cgb efgdacb gdacb +cbefd dfegba bcfead db aebcfdg deacf bdf dbac fcbeg geadcf | gbefda efacd bd dfb +agdfbe gfcbeda egcad cegbd bgafce gcfead gfade acfd ac cea | afdge eac gaefd cdega +ebfad fde edbca gbfdce feag gaebfd ef adgfb bgcfad cbdfgae | gfabdc edf fage cdabe +bdce cefabdg bafdge afced cd cad badfce gdbfac aefcg ebdaf | ecagf bedc dac dc +cgebf gba ecadb ebcdfa gcad adgcbfe dbecga ga gbeca eagbdf | ag bfgec ag cdbeaf +dbcf dgecf ebcgd gbcea gebdcf bed dfacbge gceadf ebafgd bd | db dbe faecdbg dbe +gdea fed aedbf efadgb de fbega bgaecf gaecbdf egbcdf cdfab | ed cfeabg aged dgecabf +afebc fdeacb egf cfgb daceg egbcaf cafge gf ebadcfg egfbda | fge afceb eacfg agecd +ecfad deabcf cagfe gc degfca dgcf dabcge gac gabcefd ebfag | cga afgce gdfc agc +eac gbaec cfeb acefgb afebg ce dacbg bdegaf egafdc bgceafd | eadcfgb aec ace aec +gefba afb af gacbe ecbgaf dagfcb feca deabgc fbdceag dfbge | befdcga aegfbc efbcag baf +bdg ecdgf fbagc ebdafg db cbgfd cebd baegcfd fedcag dcegbf | db eacfdbg bdce bd +cfeab ebdgca agb ga aecbg cgda eafgdb ebcgdf cbfaegd dgbce | cbdfega ecafb gdac bga +caed gcdfa ac bfcedg edagfc eabcfg caf dagcfbe gbfda dfcge | degfacb fbcaged cfa dgafbce +bgcefda eagdbf acdbe gdfbe abgf aedcfg cedfbg fea fdeab fa | aef bcead fgbdae abfdeg +cbd cgdaeb gaebd dfceg cgbde cbefgda bfcgda eafbgd cbae bc | baegd bc aceb gbdeca +fbaegc dcbaf dbcae abcfg adbcegf bcdfga dfa cdfg fgdaeb df | fcgaedb fd fd begcaf +bcdeg ea fbaegdc eag eafgbc dgaeb bgafdc feda adbfg gdabfe | gdbea eag ea aeg +beacfd bead dafce cea edfagcb ea gadfc bfecd aecfgb fcdbeg | ae cgefab adcef aebd +dcefgb agfdce bgdfe agfdbe fad bdafe ceadb fa fbag dgcafbe | abefd ebfdgac fa dbgef +cbdfg cgeabfd fe fge bfgdca gfacde becgdf bdef ebcga egbfc | ef bgfcaed egbfc gaebcfd +adcge fcad bagced cf cef fegcd edacgbf cafegd febgd aecgbf | fec agefdc dacf egcabdf +fagbd bgec fdcbea be eacgf eba dceafg faebg adbecfg baefgc | gfcaedb ebfga bea fabgd +dbecfa bfcga begdfa cgdebf ge fge gbcef cegd dcfeabg fdceb | cbegfad eg gdec bgacf +cae ebcf ce gcfad bdefag fcaeg cgfdbae abdegc acbgef faegb | fegac ec cdgaf bcaedgf +bcfae cbgedf agdfcbe gdca fgc gcdfba 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| adb bgceadf dfaeg cgaefbd +ebgca ecdbfa bcafg ge cgbefad agde edbca geb ebdcgf dgabce | bdcfgae ebg ge bge +gcadbef fgbd gcd gd aecgb bcdefg afdebc cbfde afcdeg dcebg | gcd dgc gdc befacd +fdabge ab gdeca fagcbed gba dgbefc eafb bgcfda gdbae fgdeb | adceg abef efab eafb +cfgdba cd abecd cfbadge dcb adbfe agfbde bcafde egabc dcfe | aecdb defbag eadfbc dc +dgcaeb acfdbg ge dgecfb gdbecaf gace aedbf adbcg dge gbdea | edabf cgdfbe eg dgaeb +egbfac ceg geacd ecbda ebgd dbceag dbgcfea dbacef gadfc ge | egc dcbaegf acfgd aegbdc +gd fcgbad abegdf gbed feabcd acdfgbe efacg gfead feadb fdg | dg egcfa aedgf ebdcaf +gf defcg gefb gfecdb fgc ebacgfd gbdcfa facedb ebfcd degca | efbg eadbfgc fgc fgecbd +acgfb febgda dgfabec fa fab gdeacb eafc cbgdf fbegac ebgca | af acef beagfc fcbga +fb fbec dgacbef fagecd fabdeg fbdcg dgecf fegbdc bdf bagcd | cebf fb efcb fb +ebgfc cbefdg adgfbc edbfg gadfbce fbd adebg fd gbfeac efcd | fd dfegbca bgecfa df +ceafd abdfc dbgcf gdaecb eabcdf cegfda abfe abd ba 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bdceafg gbfdeac afdgb +ed dgeb dfacbg dbcgf gbdcfae efbdgc dec deafcg bfaec efdbc | fbgdce gadbfec fdgcbe gadfce +dgec gafbcde bcgdfa dacefg efcda cegaf acd cegafb cd eafdb | gaecdfb fcdgae dc gdcebaf +fdbgca abfc cbadg cf fcg edfgb cdgbae cgaedf abcefgd dcgfb | badegc cf adgceb fc +eb fgcde bafcgd cbfeda cegdba becgd bce baeg dagcb ceabfgd | adgceb debgafc be gacdb +ebcafd dgfeb befdgca gce egabdc adecb egdcb cbegaf gc cgda | bfaedc gbecaf egc dgbecfa +gafdbc cfaeg aecbd efbd fcegadb fcb bacfe cagebd bf fcbade | fb bcf bdef gdeacb +ce gedc afbdgce abdfc dcbgea cae abcde afgbec edgbfa bgade | dfaegb baced cfadebg cea +bagf bge dfgce fdbae egadbf dgbcae fdgbe fabcgde gb facbed | bfga gfab bg gbe +cb fabc cfedb fdcge fdbeca gedbca bce abgfdce adfeb ebfagd | cabfde abfc ebc ebcfd +edbf bafeg cadfgb cgeab fba bf agfed cgbfaed fgacde gfbaed | cedbagf bf bf fba +bceadgf begfac gfedab gabdcf cegf caf efgab bcade cbaef fc | efgc fbcgdae gbcfda bdgafe +bafdg agedf dbgecaf fge dcefa bafcge ge eafbcd gcdaef egdc | eg fdcebga ecgd egf +afbdeg abfceg ecg afgeb bfce fgcae fcadg gcdebaf ce dbcega | befag dabcgfe eagbdc egc +fbga dabeg debcf dgafbe fea bfdea gdbfcea agcfde fa egbacd | edgfac eaf fa fae +bafec cf cfadgb faebd bcf beacg eadgbf bdceafg cdfe dfabec | fcb afcdgb cfb bfcae +ebfacd geafbc cgdfbe gabfd ceag cg cabfe bgcfa bgc fdeagcb | febdgc gbc gc dcefgab +egacf cadb efdcab cfedb gfabde dea feadc decbgf fbadecg da | gcfbed acbgdfe bcedf becfad +bfgcad cebaf fabgc afgbec egfb fe abdce efc fdagce baedcfg | fec gbfca fe bdefacg +gbfedca bega bcdef fgeadc bgcad ea bcfgda gdcabe acdeb ace | ea dgbcae afbdcge ae +fcadebg gbecd adc fdbag bdagc aedbfc ecgfbd ac bdceag geca | eacg cgae adc ca +afdgec cfgdab fbedag eabcf agb cgfdeba dgeb gb afged abegf | bg fbgea badfge gdeb +edgab adfcg cedabgf ce edbgcf daecbg ecd dgcae ebac fbgaed | ec ec ecba eagbd +cebf eadbg bc degfbca cbg gcfbda agfce bgcae cbgfae efcdga | cbef badcfg gcb bcfe +cafbde cbfg abgef gacedf gf edbag faedgcb bfeac gbefca fga | gcfb fceab gaf beadg +edfab feag dag bgdfc adgbf gbfaed ga egdcabf cadgbe bacdef | gefabcd aegf afge eagf +cdfeab cdg efdbc fcbdga dcgaebf dbge eagfc debfcg gd cgfde | fabcgde dgc egbd cgd +cagbef gcb fbgead cfdg cbdea bdegc cg ebgdfc fgedacb bdgef | bfegda gc gc cfegdab +edcgf be feagcd dbcfa ecbagdf bfgcea cbfged fedcb feb gbed | bef fdceg egbd bfe +egbf fdgcab dbage edafc degabf fgd gaefd cbdage afedbcg fg | gdf acebdgf gdf gafdeb +acfegb cabed fbdacg afb gafec gadecbf cbfae efbg bf egdfac | fegb abf cebda egfb +caegfd faebcgd dfeag cg cafbge fbdega gca ceadg caebd fgcd | gc agc gafebc fdega +fbgda dfebg bde eb fgdce dfegabc edcfba egbc cdbgfe faegcd | be eb dcbgfae gadbecf +fbgadc efac ce caedb badfce bce ebadg bdgfce cdbfa fbcagde | ec ebc efac ecb +edagcf ecdga facbeg fcdge ca begad gca bdgfcea cgdebf afdc | adcf fdgaec edcgf acg +feacg cdfb eadfbg adcbfg bf bfg aecgdb fdgceab gcdab bcafg | gfb bcfag fb afceg +fbdgea fcae abgecdf deafg gfceda gec cgdef gbdfc ec aecgbd | caef afec dfcgae ecaf +geadfc afbcegd eadc abdfeg ac agdfe cgefa gac gfebc cgbfad | faedg gabfde ca eadc +dcaeg afc ecgf edbcag fcdeba gcfdea abgfd adgcf cf dcebfga | dfegac fceg facdg afc +fbacged egc ecfgb cegadb efdg eg efbdc bcfga deabfc bfcegd | ceg fgedbca fged eg +bfceag egbcad debgaf dbegf febga edfgabc cdfeb gd fdag gde | egfdcba gaecfb ecdfb dagfbe +eadfgc gc bgdfcae bgcdf fbdeac cadgbf cgd gebfd badfc cagb | gc agcfed efdcga gefadbc +gcbe feagb caegf adfce agc cg egfbca dafbeg acfdgb acdfbge | beagf gcdafb egabf abfegd +abfce dafcbe eg gbe fecgab agec eacgbdf gcbdf fcegb gdbaef | bgedfa geca eg bgfec +bfadg befdgc defgb cafgeb de fced edg adgceb gacedbf bfcge | efcd bgceda de de +efdcba efgcdb efcbd ba bae cbaf geadc afgbde decab bgecdaf | cfba daegbcf dbafec bcedgaf +dfeab eb cgfbaed aecfgd efadgb gcdefb agbe cdbaf bfe edfag | dgeacfb cgdebf be bgae +dcfbea dagfeb dfgceba agfdc gcef gecfad abgcd deafc gdf gf | bgacd cefg efcg dfaceg +egfdb ecbgd fade cdfbega bfaeg gfbacd gdf df becfag dfabge | dgf geadbcf gacefdb df +fcdbga egdabf ca bcdfa cdbef befdgac gfbda acgf adc bdgeac | aebdgc gadbfce cda dagfb +dgce adfbecg eafcdb cfgda cfage gbafd ceafgb fcd dc aedcgf | egdcfba fcd fcadg gdbcfae +dae dacgfe fceab fcabge cbdeg daecb ad bcadef dbfa gefcdab | geacdfb egacfb fdab da +gcebf cdebaf gafc agbecf daebgc gcfabde cg ecg efacb edbgf | cgafdeb cegbda cg dcgeba +befcag cefdga ebaf ba bgfcdae fcaeg ecbdg cab fdbacg aecgb | bafe cfgbda geacb acebg diff --git a/day08/main.c b/day08/main.c @@ -0,0 +1,34 @@ +#include <stdio.h> +#include <time.h> +#include <string.h> + +void puzzle(const char *filename, long long *res1, long long *res2); + +int main(int argc, char *argv[]) { + printf("Advent of Code: day 08\n"); + double time_start = clock(); + + if (argc <= 0) { + return -1; + } + + if (argc == 1) { + printf("Usage: %s inputfile.txt\n", argv[0]); + return -1; + } + + const char *filename = argv[1]; + + long long counter1 = -1; + long long counter2 = -1; + + puzzle(filename, &counter1, &counter2); + + printf("Puzzle #1: %lld\n", counter1); + printf("Puzzle #2: %lld\n", counter2); + + double elapsed = clock() - time_start; + printf("Elapsed: %f\n", elapsed / CLOCKS_PER_SEC); + + return 0; +} diff --git a/day08/puzzle.c b/day08/puzzle.c @@ -0,0 +1,54 @@ +#define _DEFAULT_SOURCE + +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> +#include <string.h> +#include <strings.h> +#include <stdbool.h> +#include <assert.h> +#include <time.h> + +#define STR_LEN 16384 + +void puzzle(const char *filename, long long *result1, long long *result2) { + FILE *infile = fopen(filename, "r"); + if (infile == NULL) { + fprintf(stderr, "fopen() error: %s\n", strerror(errno)); + return; + } + + char buf[STR_LEN] = {0}; + unsigned int line_num = 0; + + *result1 = 0; + *result2 = 0; + + // dirty hacky straightforward stuff, probably won't work on part2 in any shape + while (fgets(buf, STR_LEN, infile) != NULL) { + char *tmp = strndup(buf, STR_LEN); + char *token = NULL; + assert(tmp != NULL); + int counter = 42; + while ((token = strsep(&tmp, " \n")) != NULL) { + if (*token == '|') { + counter = 0; + } else if (counter < 4) { + counter++; + size_t len = strlen(token); + + if (len == 2 || len == 3 || len == 4 || len == 7) { + (*result1)++; + } + } + } + + free(tmp); + + ++line_num; + bzero(buf, STR_LEN); + } + + // mutiny! ignoring feof/ferror. + fclose(infile); +} diff --git a/day08/test.txt b/day08/test.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