Day 1

5 files changed, 1156 insertions, 0 deletions

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..8cd3aca
--- /dev/null
+++ b/README.md
@@ -0,0 +1,6 @@
+aoc2023
+=======
+
+[Advent of code](https://adventofcode.com) 2023 edition
+
+solutions in [zig](https://ziglang.org)
diff --git a/day1.in b/day1.in
new file mode 100644
index 0000000..f7f14b0
--- /dev/null
+++ b/day1.in
@@ -0,0 +1,1000 @@
+two65eightbkgqcsn91qxkfvg
+neightwompstbkqv1fourfthdcfgtrkqzgrbfrczxbdn
+43qsrrlxxq
+898dbpjmdqjgtrvdvlxxdnvlfhncdzrt
+jninedsrvftdlcg4hhztwofourskrjhcjvthree
+five562
+bpnjmtmeightninesix2391
+rftqshh47n
+ctpkqsdqz97zqptzjlfbtwo
+sjtwonesix6cqbv4
+9zclhrrssvzpcfpqlshfsxs
+ninemcctrb5glhmctwol7
+eight5fourtwotwo
+18frdsvjxdpxf8dxsevenm
+five55foureight
+dbqeightwo4sxzsix
+ftjjqbgphtmhthreesix1six
+8sczkklgr5ncxkhkq
+126dzbvg6two4oneightntd
+fiveqcplndmmcsixksmmpdqgttwosixnine7eight
+eightseven5threesevennine
+nmxmcvrzbcppktgbznz2
+five83
+57rqxmvf12
+4nklcvfsix1jvsvxh8nine
+tpjppv6seven4sixsevenvnhcxonefjztthdcv
+dfkcrcfxkmxccpf7sixkzlgf
+ninetwo6hfg
+9sfiveffxqthreeqlvhbvrpbd
+gtcmqsheightthree51eight
+lhszhqvtn12three8xvfglffivekc
+hntwone2cmgppck5oneonesevenone3three
+8414onehlxjfqghrklv
+cdtlrnine2onexfspkgltjrbone8
+tsjvxqljbfivefive11fourfour1st
+dhhrftncnttrqz21fbdkkcdbndmdrp
+jsfcqhzstnxxlchnxlztwonine5
+twothree2nhjzlhqdlgnplkjts7
+7zndkjxcp4xvqmqlgrhg
+446sixqtk5fiveoneeight
+3hdqtn2kjdkbzxx
+onethree8ninelggjk38xt
+2bdnkxoneeightonetskninefive
+xcxfqtnpnmdmtrfivefour1seven
+1cf
+onefive5
+t5dnseventhreehbvkqzhbbttvd
+49kdxj
+s743dflzcsfninefour8
+eighteightfive7
+2zjsxntjfbkc15vtfkltb7
+knkmdgggk95two2
+dvjdztx6kfzzsscfcj6zz
+xvcnqppc4five7threethreeckhtmfeight
+4eightthree9onexmrhrfzjjjmfm94
+threebr7
+four188nine856
+szseven9269
+rppvmpprsgqbvbskg8fivedgpv5
+992one
+fxthfh9twothree
+jldmzlktzbhlsrndvn398five
+vdzhddpsix6sixsixvbqmf8mrgnqxsxvxvdcdzmkc
+7tv9
+37seventwofour
+seven1six723
+nxjlgr64tjlqzphzjdvgb1nd
+zmxldpjdsixvzcmrxxzl6
+91cgn9eightzxdzfmj
+skhtxclf2ninemqct
+foursixn8two7srvbbdldpbtwo
+two5gpnnhtseven
+onepqmzphpgfive2three
+5vrgsfbj
+5xmqhfbdt965
+263nzqjrklqkgtcgjcnprgtfj
+78qrpdzmczxj7fourone2
+6threed
+eight2twogr
+96five
+2ndkfivetwo6
+41fourckqxpdxdctnqmljkrl
+68fzpjjvfhjv4fourhsvqtwo
+ffqnvbxdzxhsxg9sevenkhpmnflbgfqsvfzfmxnlfcq
+eight1six38one8g
+5xhdtqshnc9foureightwog
+two9llmcgxhjdghbv
+9twoeightsix
+f4qmsfgvzxfvxgq33twocmfnd
+vqq8two8nhsqpgqnzrsixsix
+dbxfbl98nllgpsix7
+svzgxfspxjfbcvonefour4
+eightonefour3nine8
+tqhgbkzmhseven656tczxkfkztwo
+pckdctnzvxdgz4
+5pg
+7two7vqtqxmddlbhppmpx8kldcgcfeight
+gdbmfmppzl96452
+rpnmhfzclkmftsjkpone4sixmjhbjprx
+16ljkbvbbc77sixvjlcpdqkvkcrfqslfzvtrqf
+4threetwonedrd
+seven5mqgztxfqdfdssbc
+6eightsixpb
+7jqktjqrthoneeightthreeqpssplvh669
+fivekjfktwo21jgtjdxeightseven
+cjfvqzvtsstsvqsdgzlcrqnmmkgtvlclhfddeight6
+8247819snr
+684
+threedqsvxzfmgrbrtjmjtzjeight57
+1three1233tvbpqrlrpz
+bxlljzgmc4twothreenldkshgt
+eight9dmzftbzmsgmxvhx7khsgvgmbgg
+threehbvlqone9sevenxbccbppjxj
+jthreesixqlxlvtwo8
+cg5nineonejtmpthkqncdmcrjztml
+six69sixone5fourvhnzkxqrkm2
+mkpqfbjrninemvngbxl1nine5seven
+qgxhthreetphvh4fh
+four84
+8cdhf9fivexqsxljf
+eighthmfq788eight
+sevenktvsvvxj8fourgdbnpnthreethreenine1
+zlcmzfsxdvthree6
+mscdeight3
+lhzcxzthree8seven87
+rnrldrcponeqfdlxgz1lpxtf23sixkdqz
+6fiveeightsixthreefour
+onetwo1nine5gsvbzlsfrp4
+fivefivesix82qhdhnxbgmbttgdqq92
+jk886lfour
+kcqmt6qk7gcdzzzzdljdmh3nineshcfnbnnd
+sevenfour2krdvsfour
+kbvlbhfbjqnr9three
+two17
+dlvndnhdbjgtp57
+pqvxgonesix8k72pfmsjl
+eight7xq3
+xgzxgtfqvsvvtfr23fzkvphdjmm
+8hbkggrpxq8two3fivefour8six
+tcxntnppqtbflnzfour6zzgrpvxjtf
+2sevenninefive5
+sdvxrpt5lhzmkknseven2one9
+7pcpmgghrbt1zpllhshcsnine
+cf8
+mfxnmj2ninesix58eight58
+8hfnnclmmsg64scdrtdkfivetwo
+9four1sixj1three
+7nrcxngrxxsixmccsb4rhztxmklmccpttwo
+jgtdvpseven7two59
+369seven
+onegdlthd9one8sixseventhree
+6eight9seven
+94five
+6one282three9one
+7rgxznfbf
+zrtoneight9sfnsixninesevenzvqdxqjrcdm
+five6sixkxksxone3six
+qjqrjkjvplkxqvthree58ktgq
+7kkc
+hr54pmdtnpvzrlskpqrrqhbrnzz
+99sixfgnfour389one
+ltteightwothreefourfivenine7
+kzpzschjsptdpd6fiveninemxfxlkbmfl
+eight7dqpvvplkjxgrxxtvt
+41nine
+61
+5qfneight7bhhnine8eightoneightfrx
+34cjbcqzeighttwoqfdtqtqbl1
+twofivehbxftnsixhtffgqksdseven6
+84mnkvppxk18
+62four6rsph
+8fourctcnnzfz
+5jngcrllpnonefive
+grmspdlkv42tdzctls
+67sixeight1
+ninetwo52
+9jdvzhzflgxmsixzklv4cldfivetdmhrlm
+eight7twoghldrbzhleightjs
+ninenp8
+jxqjeight48qljhkkbfctonethreejfqlr
+z9lxzgzkbmr7jtgpczmvblfour1
+545two
+56tkxjhndzmtwofour
+1ninesixpxxxlfnfn
+6threesix9twojrmtl4
+6rjzjlxh5tdfkbjzvm
+g8one7ccsix
+4jxhxrgrhxv6threegkdsgvzxpzzrjclzrn5
+qhdjbsh5
+8mmngf4lpngqnbtxz
+zstqrl5sevengcndbztdcr
+mmdsseveneightfdbthreezbqkdbb3
+kkntgp94937
+2zrzntn8three
+klklfnxcnmczrjlprktwo55
+7ninecqjtkjsdkqgqvcxtcone6
+bgjjheight5txcsjbvv1
+rqbk4
+soneight2qxbfdkdn51ttfourfiveninesix
+czxhmh73llnlspseven8hfqzdpdqmg
+26zmphsljkkddzbkninesixnine7
+45six
+9f
+6five6nine2sevenzzzmvzlh
+hfnfour8blpsixvhdz26twotwoneft
+87twofive
+6one92six34vfive
+nine82nine5dbmjmsixseven2
+6rmgq8eightqxrj3tkljktsjxz
+onefour49sevenfour5
+sevenftckbsfivegfbgmpcvvvtqdhmbfive8
+hqrdprfhxpfjnlqvx2fivethree9onevxbqtpg6
+clz76eight
+seven6fourjvxzrfivethree7cgtvmsfzb
+4sixseven7jktrblrk7five
+tqlgpnp682qnhpspbfm
+mtfive4
+6ninexkds1slbdnlfp66nine
+9sevencdqf
+jcqccfzmgffrxjcvhpzonerlzkpvk71four38
+fourtwofourfivetjzpqmzvmmcseven3
+zqoneight9
+4twotwo
+eightgfqzzcs8eightkkklhsvkmsseven
+twosix4
+eightfkthjb83
+8gmqlpdbftwo15sevenjllkpnp
+378onefourlqcq
+rxlnmcphmzckgz9bpzonezcjcgvdteight
+sevenfive2rmzbpmfvplxdvvldnghmfive
+tvbctwo1twofoursevenkjbjd
+veightbkkp9vntmeightjdrc
+ltdmmnlsjzzxqtvnghxjnvg48bqvvvcj
+seven4frssnmkjhf
+nine975
+zcpdghhlhrvcmxftoneeight4
+rgkxgfkx6cqdxjhdqdf2eight2vzkbbpklqnine
+one6six5
+six5seveneight
+23krkcf
+sdpthreetwo3
+eight28
+3twomdpsvbpvhthreegfrdfqtnttk
+9sixsixcqbdd94bzxmjn
+6fbbbrvzkzbhhlgthree
+hgrnflhgqhd6628three
+58tfxks
+rfcmcfive51nine
+3eight9
+6threecktkhlvcdkmcxdflsdrcfmkpxrmq
+fourssvlkcsninesix38fourkfrgbdxlhx
+mbhqsceightnine5bzxfnrzdgcvsg
+gfjlsvmkfourhf9qfpxmlqkninecrbnjrfpninejdntmjglk
+fiveonesix58onefourdnl
+hkd33lgcjrpf6four
+ftsbbgmv3fourrmctcsxrfv
+rkmgfour58841
+gmgskgrfhc54cvpgkkhdhfseventhreefour
+three9onegjdmsfthreelrpqfj1hdmbd5
+mkjbxcc9375
+onejxpczj2twofive5one7
+vhclzbp77
+8onesevenseven1
+3seventhfivefiveseven
+bpnrkxlnxrq4dzjljgjg2five4three
+fivekpxonegm76jqtjrlrns
+pmmqkgdmljhdvsixsix6gdrrx
+6rzjmrhlr
+sixqnblcchkfnstwo9two4xdjns
+twolmffnfmdfptjcdtwogqzhtbvph18six
+5threefivefive2czfcvqrjcmlcctgninefour
+9cvntxx
+4sevengzlzjnntxz9ghcpcgvbm9three
+2qcck3one
+sixqxqnjxk6ls1rdtxkb31
+8onefiveeightljp2
+six7one85ptxktrlbtfdtz
+ltgnfzcjblvrdclkonesqgbgplqm3threeeighttwo
+1xmnr
+pcxkjdtcmnineeight1rl8four5eightwoqvc
+twovlhtdxctsnsixfourvsixsqfhbjzklsix2
+6hcdhsgzv
+1six8qjdsfbnlzj93gpj
+twoxfktts2xmjvcxkjjf
+gkgqmdxcfkb6fjjzfsqbhnzxjzsvzkfv
+6oneonefourxrnpf19
+qqgsckgrrh5svt2vsd6
+sixtns37
+jqgfcbrd7eightsixrgkqtkf
+4bkfpntttsjonemhtcgsnzvjxcftzssdlntlv7
+9jvjqzgrzxslffdfhmcfournhqfckgmfnone
+dgeightwothree2zhzfb2
+tldpeight77mh88two
+49fiveeightfiveseven4
+three3rpbrvnp2rgnppsctpcqqfd
+1one2sixfleightwokhz
+7cnnnp6lzcjxfsqbbfqgvnqhklcktrvrlmfszmqchfnine
+one9sdqnzhhnine5pkqthqsskrfourgkxbqpzkrxpkrvnk
+gbhvg145twohnqfqnj2mxg9
+2sevenoneqfzbfqpcfour
+pgcxrr3qhvngreight3four7
+vvbfrnqvgmq3eight3sevenllllfn
+twonineqtklzqnd7fourjpqthree
+82sixtwonez
+nfmjv8pgqtqnkpmb83
+seventwontjbdcs8mthreeqdgfg1
+2fiveqeight
+3ninexqt6fourfourone
+9ninesevenzmhskrfour2qpqzhqpbgrfiveeight
+twofxmpt7fvxkqbht
+xmtgrngscqninesix5twotwo7
+onetwo8nvhckltwo
+686one1seven
+986l
+4ninepxhzxmhgsixjncqfhqlnb
+5tkvsnpp
+njfqd5eighthgzsixnhxgt
+seven3seven8seven
+zceightsixninetwo9vxmfscp
+threemgb77nineg1vzlbvhgrms
+5onelfpdchkrqpshsixtwofiveseven
+6zmjpkzxttksevenpkbdvksphjseven
+smeightwo993
+one987cckfncdctz15sevenkdtrzkkmdz
+8rhbpeightseventhree9
+nrnxccfzhrrxhsjhlthreethreenk1nine73
+nineone5threekxv2
+fivertwotwonnrlhqzfpbntdjhv5k
+ppqtrhfkdbpkflpnlx85nddjxdctf4fx
+lmtwone472
+3vcpbonejmtssvkn3one
+8twoninembzfkjdtvdnd1three
+eightsixzrrv35hmcpmgjkchfourrg
+h87lhbgmzg48twoonenine
+six1289src
+5fiveqrmscnnqn21
+ninefourfiveninexlcpxt1
+onesix181onesixjds7
+4zvqzgvcd9dzhjzkcgflnhhfive
+6threefive7dlvgpzh
+3xtvthree
+one3cjckmone1six
+sixsdtgjtxhsh4qmkqgsp
+bznsevenfive6seven6eight7
+7ninetwo4scmttkmkmhjgz1
+32fiveffxpvvfive
+8twotwosglcjkxtfour
+8ninetwo6fivetwo
+ninevjfqnbqshgcnznb2two4
+1btbsqfgxz7
+37skthonehgnine
+qprsldzcbzcskqpgpnvjt4fivegpqllvq52
+qnqpzpkmfj5ninejsix6bpcn2
+28jmvbtljsldltwo68fssrjvqtwonev
+fourthreefivepxqrrjm7threezjsdhfs
+7kmhsdlrsqlonegbr7
+onesixfourbdcgeight53lzpgjlsz
+qgpgg377
+five17
+zpmslnjkqc3
+fourvmqhvhdgseven7jtpttjlzvsbfkdrj
+bdgcfcsevenfive8527
+1ninesevennine
+4sixfour4nh7sixnlkdk
+shjz737
+7onecrhjhbqqnn2sixqqgseven
+6six1kxpczbxoneone
+512vnxncqgtsevenfivesnc
+sevenrrdrzlht5
+6ltsix
+87sixfourgjh
+ngtzsrpxsfpmjzk2
+onefour462ql5mcfqrglrp
+l88oneninetbh5nine2
+scgzzmeightqrltnkbjxrglbvsrpd2
+7krheightjlzzmthdrqsnkdqqlkone2
+three4fivexn2nine
+sixseven8one6
+seven46five8
+bmbfd8
+one99xgk2
+fivetxfjpmnhdl7
+gktgcbronefiver2d
+444six6
+dpdbxrtnnlsfkh694xnqhszfbvcc2
+53mznqnine4dpkkx82
+6sixldcgszrhhvrbhdnc
+djfpppftbx6three9ncfour5two
+eightljcvn565fivethreegsjbfsjsc
+grdtdczfm5krxslvfk
+1threekpnhkjbgch2
+four37
+ctlxgcgzj57gmninethree75three
+lffrgk4
+one256jxbthjxhtj989kfqnrdhhxz
+three3ddsxpt1lgkzlpxfiveninebsnbntpnnine
+qxskrjjvtp1chgksksxksg79
+8zjvmfkpnrc32twotqdc6vshzv
+8hgdrds54zk
+twokr6vkbflkfrcjxvmninenineeight
+grjxdtngmrthreerqjvmxbrdvlmqninegslrzfgmcpdhmg8
+5tkdszfcjdm
+7jbzvrdprgdx7npn
+ctwoneqcmffptjzpone3brdtb4bjnzqx
+eight4tjfvrvlcfgdtk61fouroneightjvf
+eightsix9four7
+827
+8pgcksninemrt
+bggbhgh8
+fiveqsqvlsxc9jnhfdtqvsq71zvlh2
+3z1mrzxfdkqsixseven
+kbrtclpktwo6btgpxnbrz8
+5ninefour6three
+8ninefxfivekrkklfvnr6
+ftkndksixznvhxrdmj414seven
+fourdjjxhb3
+four82
+277leightsixseven91
+4czktzmzctsdqgpqthreekjfm4
+78onezmcxjbrheightfourtltlrnjpg
+zvclmdhrrbmslgfmrgtvzpnvqmth1one281
+dnkf3seventwo
+sdtpcdc5
+rtn6vfmtvg
+gkeightworqtjvmc3fqpzqsevenfivecxff
+four49gxrkmfdl5three
+9nine3326bcxnclqgsgbng
+mjrvfrz7frq2sixfour
+twosix3
+j7
+four73zfrdrns
+st14pjnfgqpj
+dlceightwo53dcjzxft9
+333mzmtlrhkjgsixcjzdrshhpv
+vp6stsvtntboneseventwokmdvgthnine
+92v2thc
+seveneightfivetwofour6
+three76jfx3ninekndxqschpfive
+fivefxgbhfour58n
+nineninezgn6kbblgf
+rjvrx4four71one51
+4mvmdqjfxhzpddseven7nine76
+86mbxjvs
+3twosevenfiveh8fiveseven
+54bczbfjq9cseven5
+nvghzbcjxn57nineldlklgb5fdkqvbzftl
+97mtvstpkrzkrg46four
+tp8
+four8sixphlcct5
+2pkccvfmp
+ninevmvlmvqqnone69foureight9
+four2xlqrmlp48vdzsevenhtrcjbpc
+ffvhhtgz78threeone
+bfjnjxr342555
+4czvdggxlbzcthreerjfshqhmj7
+6three24khccsqcnddq
+659
+five3lxchdtfvlnjn9mcs9jlsvzbcgvk
+mfnonefivetwon2mrbsc
+hvxv9three5
+75ninektwoseventhreefour
+zvjrcxchzrz7seven
+jhmbsknfm5498qtwo
+scjnfvnld72gvtzd
+8fivesixtwo
+tdjkrtrdj7twoneg
+8one3five
+2nncbsevenseven
+fourtfqfnsixfourtwo9threerblgths
+twoninebgxnphjsixseven4
+threesevenxjgbpl321
+fourtwopjzfourqvnknmmdlsrhnkonefour1
+six9ninevkxnpmnpjrmnptwo
+eightseven4fivethree8
+nine6nineonezdbrz621
+4fivezhvzlvrblm3mgzhf56
+dfkdbtreightfhrp1
+oneeightonecpnkkhpcpqt73
+nine9fdgbzxhvbslzlhkpone78five
+two74
+5three36rl7vnk6one
+onetj152twoqtjgvsnjpd
+6ninefive
+fourszvmjknhhvmznine73eightklhbbnrljk4
+89eightjcdftnine
+gn7oneeightzcshvfttpnvxrxjdc
+four78five44
+tnqmjzd2fivehqpkrkdrkqr
+eight6eightfhbqqsqqs1twolhbfsjxfxj
+4two4xhppfx
+gnfqgghz4xnlcxqpccktwofivextpskbcnn7six
+seven133bpthreeone5x
+3five55four
+6pgmbbbnmrrpdqzjkbsrpfhstwo
+556vfzmcbxsqg8
+59fiveflckfmthdd3nine
+2nine5six2twosevenqrdp
+qsghpdqfivethreefive8
+ninesevennine1
+onevkqcgdc6
+bcdspxmhzsqfhhlghmqh5794blxm
+8eight2twomd9gvtd7
+gfjxcczktc8
+ccpgbl3zqtmqjztwox
+jvkvvklb5nine2dfsmkljl4hpjbhlpdmt
+3rxzrnkdrnltzd
+fivetwoone6
+zcsf5rnxgckhktworqsqngvk8xdgtfcdseven9
+rsbfcsix3jbqnqeightsixonelrhfhlldhhfg
+njpnzndmdfzkpdseven5rvcsxheightthree
+ninethree6zplfz1seven
+7dknfz
+ninebkhfqdsrone2two5six4
+1x
+mhrzpkcmf5three
+9vzrqrmtzqnkdhrhv
+g3
+sixthreefourtwonln9fourvqgbbht
+vfvzttx86db
+cpcrxvp5eightfourseven5fivetqnine
+7fsfmgbntxrmjmpmmkcnbx
+sevenrkmm6threeseven
+fivefivebgdssdxqfnthreethreelvln5eight
+vxrxtzmtmtssjsevenfourmnhtzdthree4fivesrpcrb
+t8fxpzbnfivesix6fhrcklhvfive
+6threetzjvzkbdp
+gflz6nine5
+ldnn7qjz1lcgsmvjpbtplztmvseven3
+threefourtwoeightdfpbjbggx3m
+4nineonenine6kkzsmfdrl
+lmmpsdmnnsrgkbzcdfive5
+4onethreejcrgddkxthree
+9twonexr
+pvjdlxv1xlgkdsixsixone1four
+fourtwofivenine2
+xl8
+tfmfive7
+9q8svkhxgvbmhseven
+fournmtqnnphzckqsnpqddlvgff1ninetfhdknbnl
+6fivetwo59gxbzxrkdvhfive3
+ndbrshkmc9
+4fourseven
+lkdcxdkkxthq5
+ftwo2pgpljh11fpbgl2
+hhjrfcchcjlhninexmv6
+9bpzdrrfqcs7eightwob
+8eightfive
+57nnbqt5eightzvfblxstz9scfnnv
+92three7xkkdskhvseven
+ghlbrzxhlkh63three
+5nine7fourtwo78
+3dvxdphhxgrbfrlq4qxzslfng8rrfjnpjdnxc
+brq68eightoneightvrx
+four7twooneeighttwo
+onenine2nineninesixfive
+slltwone8kngkhvgkkphrmgprnm9
+twonhsxggcslm3zqmsixfive
+pzgpspbfivetwosix9btjbdfbdeightj
+fivezpdk34ninephlzvddrmzvkztwo
+sevenfour223qvxrdrvqgkqpctbrzeightqtxjnhgz
+7373sevenrrsfzsfour
+rttwovggcqtzx2993
+twonineonegpcpdqrpd284
+2fourfrzkbkhninegseven83one
+1pjqvdntbseventhree
+eight19tszhr
+hngn5fqfcfxrnfs
+6xsxcgkdstncdl19c1two
+cvrdkrqrmssevenfivecjblqxjbzqtvkqhmcm18
+zqtblgtqttwo9gmkcfkdcgbq83
+bdrmrsrdfponeeight3fvvsrfbshbzbqztmhbbzpkxxnb9eight
+4trjldtsjdc8vkgvseven
+37fourfive9three7nine
+fourseveneighteight7fiveonexxmmjzlbhk
+fivetwothree8seveneighttwo5nine
+mqmeightwo3
+8cjkdcdk
+6cjnjht51knzzcsqkvtwo
+5dshlzzxxggninesix1two
+9seven1eightonef7
+two75sixfivesixhthreethree
+1fntfzqrjcxlfprglcsix7
+4lgcgkseven
+r15two
+eightdsxsnqgfnbntvnqtsfpr1
+sddbms6nine6
+7tpdrfpbd
+flmztqone7sixzdqlxhfiveoneone
+jzpvdcvnzmmgzhxlcsevennine2
+nineseven3cqktfscgtf
+rdhrxhfn8hbhctkkxz3
+7cjzxmlvq48kvmxgmcd
+twoeightlqpfv5fourdfv77
+8sixfivegnsevenlgdkfcfznine
+fk8hcndpfflmsbjlseven
+1onesscdrlztwoonezfm
+n8xdcmfxvvgm1b
+psix3
+gmpnine5ninekfmmhbrnq
+713six
+gqplptccrthreethree3jdgbtx
+1onergncpbv
+5fivetwo7two6nine
+4sixqrrtqjnv7
+onetwo7364fqrjghsbzp
+five7shstn
+5sixkcspphnsxndzfdghh
+jhxpxxpfz4sfkpgeight9ninedclxgv3
+fourqfzqsgpt4ljtrrxn2
+8seveneight6fhnf9onethree
+bjgdq8two8m6bnnbdtqvlf
+eightgjrvdjhz6
+rdkvkqhfourdpn7tkjbflm7
+1ptthreeeightonetwogbh95
+92four96
+2sevenpkfgj75
+lpfnmmp2eightmbrzxdskx7ninetwo
+gjmxfive7qqrbsr
+qxprvlrhxlj1threethreevrvvc2eighttwo
+vdqmnccqsplkpmspqcggvllsxvh1
+fvdhvmgzseven2fnrrslbdtwo6
+fivefive9smbxkkp192
+vbsdstvbknldcgkzkgqjln7
+mklnltnfsixphfgfzseven8fivenine
+jbshrqn2three844
+6nspp1one7three5
+six3four571
+nqjssphmsbhbfhp822one
+9kffmtffiveeight3
+sbfbphdgjh4sixbfcrzmnlhxcsksctb5tdtm
+7bfzk7mvrglxjfour2tzrkz4
+onethree36
+zdtcr45four2tpgqsix
+sevenmqgjhcjpnine63zllrtnm1
+jnccdbplkfq6oneightd
+one8flhbdbl93
+rrmd34
+six1lkthggkbtwo5onesixthree
+eightl294eightlb
+eightzngvqdmfgvfvhlrxnfourcfggfgp9
+dkmzgc73l
+839fourone5
+xfklsdj6three22
+soneight6cvgndhbtttlbpqktwo
+5nine1four471pnnvsix
+zqrfmnpgzkqrshrpktfbndvfmrcjhfqlhcbn9rrffzngrhnthreedbgcm
+xcmt2fournine
+seventfgnkd87sixthree
+77fktkx
+3mdzzsvdmltl7jeightfivenine
+seven988five
+9975
+eight4sbc5eight9
+mxj53bsh8fourzv4
+817
+99ninevnonecfcbsjgnrzrdffll
+twofftvkshm4
+one221jjbtlgdtt
+68sevenfive2lhrblxpkdq8nine3
+39cjrgljlvxdfivenhptwoccjbhtnmqreighteight
+sixfoursix74fzdtnx92
+rhpktnqsvqxn51
+35nine1
+43gqzppsnktxm2
+5five566dtbppfp
+nine7one23sixsix
+93fourbqmsspdhr
+cm5qcfxfcsg3qcvstwozhsnspg
+227two
+qfrtvpnh8
+one4jzmmmjjk
+4vxvngmtjxldcn2
+bjgb2kvrlshdvfj1hnpfbtxkp
+7eightpzmxcmcnsmtkxjt
+hzhjbddqj961zkxgmhxdthreetwo3
+7fivetwo5dvpplrmxqrzxtwofive
+717mfszgrbt
+chqhsqt7hcmbjqstfive
+threesevenkknvhhtt7399k
+7n
+6twohzlngv
+eightthreekkgt9mqzvkql9txh4
+8fcsndmltseven
+twodjscb5sxfourtwod
+5ssbz
+onedvpnnfvqxvfour1jggdsxfdgrqfrgvssix
+sevenk94mthklgmsxhxdjxslvfive
+bjqshcpk26
+nine7sixzx7
+9threexsfqxqhvvbsjzrbmxcfssix
+geightwonineqp7twoeight79
+8b8dllrmvgnmhshvkhm
+7grpghbfourlsixthree7
+1xzrhgxsh7threetrqqvsl1hcmmk
+fivetwoppnseven9sltkmcsntzldvqzfour
+6flgcsj
+nine44onedninesix7
+hrlfdsmjqtbpfpxljhjrrxrrdnrlzf34eight
+sevenrzgsvq6
+39sixjshdjrfmstwo2tzmzhgggdqgflp
+tcrvlffrmqrcx6bqbvhlcbgtwo351
+9281qzt35jmtpjgqq
+qpdtvpmfbqrmthreetvlsr2fzbzkthreerhqvqbcnj
+two3fgrnggpcl
+7onexrnvssfjczlmkzgprnone2khmhntg
+6lzggxthreefour26tnxfcqbl37
+8rgnffphzgponejfive
+bmpsevennhrkphhbfz8nine
+5mkbbjdcqninenine9
+zrfvhcreightone9five
+19chrfkm6gqlfcfhmslmcmr
+dzrt197twonine
+vmrlbm5five
+pthree3six417frljvddzjtgdvmmh
+fournine7lmzdrxvjsixlmfsgtwonesn
+ngt8fdcsgmbbvrone3
+3hfhppzdfp
+sevenqvrlkpgxnqfivexnzpxcnine99
+38oneightg
+4fivezjzsstlfxp1pdjmmnvjvtthree
+xfngrdrfseven5rcsqtflhsqz
+three3jtndtxpx
+eightfour8xxtkjsjlrsmg6
+1qnjttkhzltvj2xtlts6lqlxrf
+eight817two52sixgmhsrnlzm
+fourgxbk81
+eight6eight
+4pllfiveeightsixonekhxvhvx1
+41twothree
+9pcdldnine
+vkkncnrblg2x36
+sevenzrqsix3
+ccpnk5threeeight1
+rj69
+ninedzgnsvrjbg4eight
+nine3onesevenxvpmmt5eight
+drcbrg9eighttvdqgrchlqnineseven
+five6two3bgzgtvxmj8
+sixfive9
+7txddsmg2hzhz1fourkkthree1
+3pvgxxxmpt5eighttwocnvnine
+cdnbkl3
+twosix9sixninevftwo1
+392
+427twozqp79sixtwo
+2jpkrm16
+threelbspfkeighthxmmcpprmeightthree3
+bvtfzpr36nine
+qdzfdzbvnk47twofive4two5
+ninethreedfzrphlvkpbvtvmzjxgmrh6five
+cjnq7gnpnpt
+six8nine2
+chsdgnlrzqnddfjthreebhfdvlgfpfshkeightseven6
+nmlqvslhk6fourninexpzlf9pfnbrnhphxzxh
+eight9nfgtsjxnteight8pfpfctjxxbffxsmjtwonegcd
+nine8m1
+9sixseven
+218
+6brzzmkxsm
+ftxrrhzz1five98kninepc
+3kkmbvvvtwoksspmqksevenoneplone
+eight3sevenfour7two8md4
+jvtk22472
+threetmpkcsjsixfour6twoseven4
+kclmjgdplc23ninekmqbrkxrkdhsnnhmthreecfive
+xkzbzkszml641one54phdfghtbdd
+3442four8vr7
+6lthree
+lfrlxpczfiveseven2
+fhjjlb1fiveninempnvlzbkhsvqf6
+fiveone66onesix6dtwo
+91bgqfz1four8
+7two8sevencvfjhqmdtfone
+889two3db36
+sevenhlljx5qoneeightfivemvsmbzdbznine
+one45sixft6eight6rbf
+gdsevenknlfourkmzlpvv3flsfvnmfseveneight
+3qbs622fivemzqpxdfkssix
+275fr2eightoneone
+lktbgbhngfbrzdponerqstslfourhjxgmv1qcj
+two9fivelsxpd2six
+9eightnine
+qmteightwosixseventznkgmnhjvdfxvqv8
+ninenine9jdgndgnfour3pgb4gdpjnt
+three3sevenzcbllclmseven1threeeight
+xzbkxnttninexsj2
+ngrgdonefive94fivehgnt7
+3nineqnvhsninetfeight22eightwoqf
+phrzskrhbd9five8nine
+dqqnfive1
+hsjrhjvmlqxltxxgqx6qbfsnrhgbkl
+four5hrpnq
+vfsqhhgb6eightgtjlvnxnqsrjn3pg
+71fiveknrgx7
+dpeightdbvpnfour1
+two59blldsls85
+three22nfvmtd77mbjnvxqbdxkxvp
+five56five22
+jtqeighttnkzkbbtwoninepzxphtlbzsv8
+1zhktrqsklfivegxdhrqt
+three422
+8sqlrqn9
+zh8
+1fourone8
+94kkqb9four9
+6sixkbvxf
+rbvxqgztwopcbhhgzthl6xsix1qjrvfive
+two29one594brhbpnine
+7fivebczzcfeightfour
+bxqrdcx7sixthree
+xjqchs31twoeightthreesevennine
+83five8qvnrcllfhddhltsevenone
+gsjjxtvtck7six
+cxsbtkzcgjbgninehhmzzfnine3bpzg7
+six7threedbhtvcvjtmeightz
+pdfmjbqgvkr5t
+cqbkrkfivexkmvgqfbfsg5zmfhbqkdcq1
+6ptrseven65tvbjkqlhjhjq26oneighthsp
+39eighttwoninetwomnszqrmtvj
+hfpcgzrp8pmmvonevtnfpfltmgxqzntwo
+seven6cd8eightr
+1vbpfiveseven5gsqdpchrjzfour
+7zlxvvjmlnonesix67two2sfggmgbmm
+rmgvfvdhhgztrrn966six9oneone
+6nkvznctwoone
+eightthreeg9nine7six
+shthreethree1
+tm1eight8rone575
+nv6
+tpkgndlhdzlfour1fouronethreenhmgtjzn3
+9onetwol2qmltninehtrmfxcsbfghk
+2vbqxkgp5two89one
+428ninefcskeight
+g3fournine55eight
+hmnvcgtqsixfivebone6
+mpcp55xdfive33mdbsc
+bfpfrrlqsixfq9cnzvffncbn
+hmpvxz3fiveklnnjcvgxtplhhzdrn8seven
+gqr6fiveltkqqfvkhconeseven4rlqnvmmkgcx
+two2eightwokcr
+eight1zmqpcjbbxkkcnk8
+pq6qhfnm
+sevenseventwo5three7
+7eight1mkpmsvpmqfjnvqzgbjkmpc2
+gtwoflpblvv6xzpblmfcbx
+32five
+four3two843nlxxhktmcdoneightjh
+89gjs7eightnineonethree4
+4rfcbkgrcfb6three7jblgcrrxp5
+mhs47tqvkt31twofive
+pspptsbp55
+fourfour5twogdvjvskqx8foursix
+eightxfvnrpcvjtfkvlng91eightcdgzhxzcm
+nine5psngtrxms5vnrbjjrpgt
+5xnlqscssbfiveeighteight14
+svzlbtdkhs5eightfourgzhsix944
+fourbphkpbkcfss5l
+4four6
+onetwo99
+nzhlddbkgcbxvpfour1twofiveseventhree3
+2one2txrzz8fivethree
+seven86
+two3tznttbfkzzbthreexqhxqmbj
+dskppdthree2
+seven4lfive
+hnftvrk8fhhzrqzxxqzbhvjhflv2nine
+eightsix2zbsgtdvrone
+rmssljck3sixfivehvsvtwo9ctrbfvhpxfrr
+3nphszlp7ktrtzflbvxnfive
+cfrrckdlfmjkmvjbtxnsdq613hxlsix6
+spljfjrlrsix2fsl
+threeonezdbmxps9
+two2lnbvmmpnqq8ssonethree
+vvpjpvm6two7
+424
+threek811nine1five2
+82mfsgmh
+ninerrjtnkm4nine
+sevenonenine7
+nine16698llgxbbglggone
+knhnxtj6ntkxnine2eight7
+286nx
+twocbxfonenineonerxvdjzjzcp2
+2one5
+ninethree25sevenfour69
+chthreeone9eightoneshlgndnrjoneightcs
+2onenvfszxbphone
+9threefour
+eightonenine28one
+3bshksixrlncdqtk3foureighthjcmmktsvx
+prlsj7seven
+gqxoneightzmcsqsbvhbthreefive16
+3kbqbzm2sixnine52onekrtoneighttq
+hqnfive2one
+jfive17onemzd
+6one2eighttnjzjk
+vtmcxnttlxltcmseven2svp2pnzkbgzzzj2one
+54mhqbcpzgsd2ld
+3fvbnineeight
+fivejrxqnqp11cxeighttwojqbqnhmeight
+twoonetwo49sixxjbkdoneseven
+7qnqpfb9xrhtxkfz9three
+one8four1
+2r3lrgjltxxlrhrvfltwoonevq
+jkptfcvdtwo347mjrqd
+eight9cxstff
+7nqqbkcsftknhqffjvr2sevenpkjvtc
+seven5sevenrsthreefiveone
+8mmvdqhone584eighteightfive
+7sevenjjgvr4
+465nineninesqnslzrfpl
+ljqnr737gvfmpjztrsbns8two
+hkmdgbbrzpjczpqkhzkdmndlftxgtwoeight26
+nhskzhxfk26lpklkkkdnxeight
+sixrqcjqseven7sbqlnpqvshxninebxmkxfrznine
+xlrrfnt7jjhfqzr
+one9six3
+sevensevenpsbgtgqpmbsbbpldvbz2qsstxlcgkd
+5qpmvbnpfiveoneeightsevenone78
+four69seven
+2nv
+1twovfmvk33gcrsfgdbms
+fivetwoone93
+g4sixjbcqttbhnp6fourfplmzdtnltnjqdsthree
+f3
+one3ninefiveone3hlsthrp7
+lmdgzgkrq747nine
+fourtwo7
+7353bdninesixxtc
+njnsprmjxcjn42sixp1
+92onefour
+5eighthkdf
+263fiveeight
+four96one52fivendcnqcl
+rcntpkdtjlcxkdg8
+nt7g55ninetfzrjmhrv33
+two19
+ninefive5threetwo73pxjfive
+onethree42
+9dctnplfgkeight9
+xpjtknfive6five
+q1ninefour7
+twohfdckgcddpmjbpmgbxnineeightxcxkhssjt1
+8hgcs3onemnrcfbgsh9fdc
+7zmgns94ninenmm
+3four3
+hrrt3nine292fourfour
+ljsbmrfmnpgg799twosixfoursix
+sixjj6
+gqmvmmjsjrgn7fiveninetwovnjbs
+m2
+525onefive
+ninesixlm7fiveeight
+fourfour6eight5gpkpjdxqvrsp
+two5sixkrmxnszf1eight6seven
+1bbmmf
+26two
+9eighteightfivesix7
+mcjcdnhlxv92qfbfbdpxfnxgbqsnxkonethreeseven7
+9qlvlrfivefzdxpmttsllhntpxpfthree
+djdjgxdpnd82five
+fiveonenine19four4two
+five69two7sfj
+twoonelvmdbdq2two
+qxeight6trprdmgqzj4
+eightfourdvmbvnjthreetwormzfr4qgdctg
+fournngpdffcxt1six
+seveneight6zeight9
+fkkmfbd7nineseven
+twobtkvbzgplfpjfiveseven5
+9jsjkjhgtghbqltldlcpqtvgpmhsixsix1four2
+kxcgkvkmnblfive438
+six6lbbqlttnvfiverxceightwobx
+8sevenseven6three9ptfggzkhm
+one7ninemdjznbqhfkckpjkxtwo12
+1bvjgdjlll
+43kjdtwofiveseventhree9
+fourlgzcrldtwoseven9xndlqvbrtonennvlvzplrt
+8twohzmcknlmqd
+gshhvf5twodqgdseven8fourfoursix
+nineone47sixeightrp
+4stonekdgdhxrtqv9sixonevhhmhqzp
+8lmpppc
+4five8ffive
+fivefivesmmkh6jhtggr4
+tjrr9ninenine
+six6fiverqdlm67hztn2five
+six3278xsddmnz
+8qlhdpxn645nhrjm
+xlfttcfs6jgtbeight6sixdvpl22
+87tcj6gkjfrrmdjbgh4
+6eightsevennmdpkkmkqrffgshrfhml7two1
+ninemglsrmvqrk5six
+9nfgt1rntwo1826
+three2fiveonexrllxsvfive
+9zjfkmdfbfqqf2mxpnqsmsthjzzszdxl
+43eightnvdrthree1eightoneggrdmnp
+pffldcmnlpsevensixqxhdncrclbc51five
+5bqnlphone6
+195one
\ No newline at end of file
diff --git a/day1.zig b/day1.zig
new file mode 100644
index 0000000..ed6d7e9
--- /dev/null
+++ b/day1.zig
@@ -0,0 +1,139 @@
+const std = @import("std");
+const digits = "0123456789";
+
+const words = [_][]const u8{
+    "0",
+    "1",
+    "2",
+    "3",
+    "4",
+    "5",
+    "6",
+    "7",
+    "8",
+    "9",
+    "zero",
+    "one",
+    "two",
+    "three",
+    "four",
+    "five",
+    "six",
+    "seven",
+    "eight",
+    "nine",
+    "ten",
+};
+const w2d = std.comptime_string_map.ComptimeStringMap(u8, .{
+    .{ "0", 0 },
+    .{ "1", 1 },
+    .{ "2", 2 },
+    .{ "3", 3 },
+    .{ "4", 4 },
+    .{ "5", 5 },
+    .{ "6", 6 },
+    .{ "7", 7 },
+    .{ "8", 8 },
+    .{ "9", 9 },
+    .{ "zero", 0 },
+    .{ "one", 1 },
+    .{ "two", 2 },
+    .{ "three", 3 },
+    .{ "four", 4 },
+    .{ "five", 5 },
+    .{ "six", 6 },
+    .{ "seven", 7 },
+    .{ "eight", 8 },
+    .{ "nine", 9 },
+});
+
+const Input = struct {
+    const Part = enum { pt1, pt2 };
+    file: []const u8,
+    part: Part,
+};
+
+pub fn getInput() !Input {
+    var p = std.process.args();
+    var in: Input = .{
+        .file = "",
+        .part = .pt1,
+    };
+    if (!p.skip()) return error.NoProgramName;
+    if (p.next()) |pp| {
+        if (std.mem.eql(u8, pp, "pt1")) {
+            in.part = .pt1;
+        } else if (std.mem.eql(u8, pp, "pt2")) {
+            in.part = .pt2;
+        } else {
+            return error.BadPartSpecified;
+        }
+    } else {
+        return error.NoPartSpecified;
+    }
+    if (p.next()) |pp| {
+        in.file = pp;
+    } else {
+        return error.NoPartSpecified;
+    }
+    return in;
+}
+
+pub fn main() !void {
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    defer _ = gpa.deinit();
+    const a = gpa.allocator();
+    const in = try getInput();
+    var f = try std.fs.cwd().openFile(in.file, .{});
+    defer f.close();
+    var c = try f.readToEndAlloc(a, std.math.maxInt(u32));
+    defer a.free(c);
+    var l = std.mem.splitScalar(u8, c, '\n');
+    var t: u64 = 0;
+    while (l.next()) |n| {
+        switch (in.part) {
+            .pt1 => {
+                const ix1 = std.mem.indexOfAny(u8, n, digits) orelse return error.NoDigits;
+                const ix2 = std.mem.lastIndexOfAny(u8, n, digits) orelse return error.NoDigits;
+                const v1 = n[ix1] - '0'; // ascii -> number
+                const v2 = n[ix2] - '0';
+                const x = 10 * v1 + v2;
+                t += x;
+            },
+            .pt2 => {
+                var ix1: ?usize = null;
+                var v1: u8 = 0;
+                var ix2: ?usize = null;
+                var v2: u8 = 0;
+                for (words) |word| {
+                    if (std.mem.indexOf(u8, n, word)) |mix1| {
+                        if (ix1) |rix1| {
+                            if (mix1 < rix1) {
+                                ix1 = mix1;
+                                v1 = w2d.get(word) orelse return error.Wtf;
+                            }
+                        } else {
+                            ix1 = mix1;
+                            v1 = w2d.get(word) orelse return error.Wtf;
+                        }
+                    }
+                    if (std.mem.lastIndexOf(u8, n, word)) |mix2| {
+                        if (ix2) |rix2| {
+                            if (mix2 > rix2) {
+                                ix2 = mix2;
+                                v2 = w2d.get(word) orelse return error.Wtf;
+                            }
+                        } else {
+                            ix2 = mix2;
+                            v2 = w2d.get(word) orelse return error.Wtf;
+                        }
+                    }
+                }
+                //std.log.warn("n {s} v1 {} v2 {}", .{ n, v1, v2 });
+                if (ix1 == null or ix2 == null) return error.NoDigits;
+                t += (10 * v1) + v2;
+            },
+        }
+    }
+    try std.fmt.format(std.io.getStdOut().writer(), "sum of calibration values: {}\n", .{t});
+}
diff --git a/day1_sample.in b/day1_sample.in
new file mode 100644
index 0000000..1ba8437
--- /dev/null
+++ b/day1_sample.in
@@ -0,0 +1,4 @@
+1abc2
+pqr3stu8vwx
+a1b2c3d4e5f
+treb7uchet
\ No newline at end of file
diff --git a/day1_sample2.in b/day1_sample2.in
new file mode 100644
index 0000000..4316a6b
--- /dev/null
+++ b/day1_sample2.in
@@ -0,0 +1,7 @@
+two1nine
+eightwothree
+abcone2threexyz
+xtwone3four
+4nineeightseven2
+zoneight234
+7pqrstsixteen
\ No newline at end of file