diff --git a/data/day-004 b/data/day-004
new file mode 100644
index 0000000..12d430c
--- /dev/null
+++ b/data/day-004
@@ -0,0 +1,1000 @@
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diff --git a/data/day-005 b/data/day-005
new file mode 100644
index 0000000..fc23021
--- /dev/null
+++ b/data/day-005
@@ -0,0 +1,511 @@
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diff --git a/data/day-006 b/data/day-006
new file mode 100644
index 0000000..13a015a
--- /dev/null
+++ b/data/day-006
@@ -0,0 +1 @@
+stftmtvvtvqqczqqnjnwwlqqdzdnnsvnsswbbwsstvvssfjsjbjfjmjpjzpplpppjzjqqdzzhqqqqtcccbzzzwzrrrdqdldpdsppmqmmnwwjddnqqscclncllvhllqpllchhbccfcbcgbcgcfcncsnstsddldzldlmljjfbjbzbccmrmrppqmqsswbwqwdwwcnwwhrhppfsfvsvrrfllhglhlggjpggzjgzggnvvqfvvhffpwpmwpmmwvmvrmrbmbzmzbbvgbbcfbcfbfppnzpzrrszzqgzgjgddmdwmwrmwmzznqzqhqhvvsslppsrrljjfpfcpfpbbrjjwjmjpmpfmfzfvzfftptzzbmzmddpvdddqmmzjzbbhmmwqmmmbgmmttrhrqrvqvzvdvzdvvmsvmmqlmmtddvlvttrtvtvcttvssnwwbccqmmgbbqrqlqjllmslsmslltrtffzfpfzpffvwvffsllgvgtgwtwnttfzznzqzztfzfvzznnwzzcvcqvvdwwsnsvnnthhnphpssmjmfmhfmhmgmllmsmrsrrmmhsswjwqqdbbghhpsptsswvsvfvcffqcchlhfhvhjhdjhddvjjpmmsrsqrrngrrmvmsvsllrmlrlprpggqzqmmvlvvwrwnrwwzztrzrbrdbrdbbhlhchjchhtthpthphplhhlphpjjsddtppvbpbbmnmgnmmqbbrhhfrfpfjpjgjljcctwtmwtwvvvmsvmmnjmnjmnmqmvvggtzzctzttszsvvjwjqjmjbjvbbshbhghlghhpvpnvvqmmgjmmggqvqtvqtvqtvvmlljbbhdhshnnwqwbbrnnwswmwfmfttjztjzjsjzjdjbdjjzfzdzgzhghgpgqqdzdhhnwnjnnhrnrqqjsqsllbzzzcnzzmjmvmrvrgrfgrrqmrmpmpzmzqqfwqfwfjjhphgpptzzwmmfjjvbjvbbqsbsbcbppjzpjjzpjpvjjzdjjgcgppvrvjrjpjspjppntpnnjlnlrnrdndjnnsbnnppvspprbrddjrdrmrfmmtmtbtntftjjsscvcbvvcnccnbnrbbmlmddhpdptddmrmmjddnjjtztctqqhhttqctqtbbnfnwnmndnzzljlgltgltljtjllwjjbrjbrbpbgppmzpmpggdnnmznnhhmfhhssgtgvvlsljltlppdqqbtbvbsvsswbsbhsbsmmwswbbbbhvbvcbvvsvcsvvmfmlmgmjgmmbqbrbsrrgrsggldlmlttpbpmmtptctqcqvccnhnmnssmvsmmddlclpccfwfdfqfvqfvfqqwmmwrmmbzznpnllfttgcttnbtnnsswttfppnddpdpsphhpttnrtrlrsrmrnmmzhmhnmnwwddmhdhqqhbqqdcclnlfnnzfnzzqfqddczcqcrrjsrrswslltfltffjhhqqfcchqcqpplbltbblbcbncnpccdffcwwqzwqqlwwtjjpbbjvvljvjgvvrsszfsfcssqsvvwsvvdfvdfdpffztzrtzthzhhmwmzwzssjlsldsldsldlvvjdvvnbvnvmvmccvfcvcfcbchhzqqhgqqcbbhdbdpddwcdwwzszsfszzgbgdgzgvgsgnssfqsqjssrppsgppmmpzmppglgqlqqpzpqqfzzzrnzrnrqqzzfwzzffjfzzmnznpznpprhhvcvvvfddcrdrsscnnsznzszbznntwntnrnbnzzrnnlwlggnzzwppmbmrrncnlclzltlblhhlvhvphhsdhsdsqddgzgvvshvvzzbvbrrlplqpptplljcljlvjlvlqvvndnsdddmvddzhzjjgpjpddppzllwtwfwgfgpffmhhzllsttmqqhjhhpvpgpfjsgscnwjmwmtmptwlpfjljwgpgntrlpjfgbjqmcpzgfhrwmznqnsbpptbdrzmdtvvtdqjgrjzlphndhmlchvddglqnqsjqrfqslprsvlqjwqnsmsznptsstpvdntpttslpmqqbsdlqwpjqnzmpblgqmjrvqwsncnzdszgfsghddlnwhwzpgtddgstttvrjfjwwfrgsdjjngljqlqcrzlgsmwngbzvmjwtnqdqcgwmfhsztgrtvvfzbtstmdbqpntdpsszjthqvpbdwswfzvmrcpbgbgdmldfhvdpfsmdzfhwsrpcglsztdwqgbqszcqtqjhgntzvttldqsffftzmllptzhmhpmfsgcchfrnrchnsgcfjbgrqmvrmmhnmlnwtgwhznqfgwnlrqlpjrvfrgzcjwncvlwhpclfzngbgvmrmlzngmqlvvwhbpjzlclgrcnnvnlppqhvlrnpzvmtsbdpfbwgffgzfwvltcfvfdcnfhwvcvclwwbmshhmpgrzgltwjmqczpqzdwfjpqhmwqhvvgnpgtwrjrgwvhthtdrdpnwpbmwstgblwmbfvlwflqmfbcsgwstwvncwfcsmrpcfrrvmlbqhdtdswswfnzhgzlngwsrtlzfcgdppmjnghfrgbdqhqmslhcqddjvsslsjwqqznttqjzdlghnsvqqtwrpfbzjgwnrhhvlnbqmnvcpblzgbzltnrhzpdwvbqbtmctbzgsdjfzswrbqbzgvwjlwtmgcllnmnwcljbhbplpvtgpgjftfrbgpgmhghnjcgjfqmsbqhbgtzbfzgwmfdsgfgmgzsbgdrszfhjttbvcqjzjgbqfgswlmrrhnmnfrptvjtlnvplgznsljzfzmhghlsccnqzflfnmbhshfprhclmtfptcmtnhrjgnngnqnczvcgzzlntftjsbgpgwzbnrhzzfqmznqnzfrvjzsmtpjbswzjlbgpfftzrzbfgdblpwscbqjfrfmfnhhlhjprtlzzvwnwzsnqhnmgwsdprnrblgbclzhthftqzdljspwdzwmwhfmdzmlvqsngppdfsjdprbrhffcvcvzztjjqcffwbrvpzvzfzhjvsfvsnrmjvqmjtrjbmbqsdtjgvtbbzzfmnmrrflgcdtljpmpvqvdbzgbmhjgccgdtplllctzqpfqnsztbwdbmqgfzrcddtmwrgmwsghcfpgqssdjrtqhtjfbpjvjdnzgvpzrhbrhrhcmpbglbbrvdltdpsrwjbjzftccwgnqmnlqlpjwrfdvmlgvgqznlvsmpzsmgjstvqbqpprzlsdndpfbmqcrfgvcfvlfhmpfnnqlcqlnbbgcrrrhbtzwnwmfrnrzvgmqlmqnmnzbwflwzcmncphjqztlrzvpztqhptmfsrppvvlzcfnlrwptgccsjjjscjcwnzssmbcvtzhnscgsbrchbqbrtdzllfvmqfwznfzpzmbfwcdsfhdlddnfbdgqbqjqzdtppshwcvvcjqstdgtgbhmlqlrfrhbvfsszsmbldmwfnfgnjptdslnzwcjgmvbnqcfzjmrslrlllplbhpjcnvzmvrfzwqhmbnrvpqnvcfncgfwqlvcwpwwljssfmswctcmhgtphvjdpfnnzznfbdjcsndrczlgdjhrnrltsgbtqmqcbwlthwcgsbvqbnntcznczpmlmblwdrlmzqdztwsgjthjwtfcpgwbczmdmhttzcwvdzhdfldmwnbnfdcjgvjhrfltjnjhqhzmzrlbncwdnlgshmqhpgsdwbvmvjsfgvgqzqjqdzqzmfmrncfdgrqfrnstvpqwtltnhgrmhgmmnwvlnsfmmbjrdmrnlgfgpqncdpqgvjltpghbgffdppdcfhdqhtvrdnfvcttlrqppfnqtmzpfgsnmjqfrgtbbdzzrccsrzgfjndlrnzqmjjtgldglcpzcrhwfplvdndjtzbpfbbbpfljqnlvrdzbrvczzwdrvzlmslbjsqgqdrltmhwcdpldqldlpctcbjmsvdwlfspzlpgrhdrvjtprcwrmszvzwmmjgvsbfcztmrdgrgshgtggpzszgqhwmhdzjmzsgqsfmqvcgqqwgprgvvqlbfhpwsfbjdqtcfnfhsgzthzhbpwggbnscqbnvcdprsbgllsrdcclqggfgfdrpqlqljfwpmzdhthpczcsqrrm
diff --git a/data/day-007 b/data/day-007
new file mode 100644
index 0000000..da00a68
--- /dev/null
+++ b/data/day-007
@@ -0,0 +1,934 @@
+$ cd /
+$ ls
+dir bgmjrlz
+dir bhp
+dir cbcwz
+169838 fddw.bgw
+dir fvhmzqc
+dir hqmlnpn
+248637 jtwpn.lnr
+319470 lnmrrht.zbn
+99548 pqpslbtn
+dir rbztmqjn
+102720 rqpt
+dir vfrtt
+$ cd bgmjrlz
+$ ls
+dir dhqzgdl
+dir djtchhmw
+dir tvq
+$ cd dhqzgdl
+$ ls
+dir jjshzrhd
+dir jlfz
+dir vqvvwgt
+dir zcqbt
+$ cd jjshzrhd
+$ ls
+dir jjshzrhd
+$ cd jjshzrhd
+$ ls
+81645 gfhfplmm
+$ cd ..
+$ cd ..
+$ cd jlfz
+$ ls
+dir hgzg
+189290 wgdffcr
+$ cd hgzg
+$ ls
+121740 vmmcdr
+$ cd ..
+$ cd ..
+$ cd vqvvwgt
+$ ls
+142209 djtchhmw.tgr
+$ cd ..
+$ cd zcqbt
+$ ls
+204760 mlsfnt
+$ cd ..
+$ cd ..
+$ cd djtchhmw
+$ ls
+287664 cgjmd.vrb
+307590 ghrntg.zsw
+$ cd ..
+$ cd tvq
+$ ls
+270869 jjshzrhd.lzb
+$ cd ..
+$ cd ..
+$ cd bhp
+$ ls
+231648 gmj.srn
+260008 hrtbfww.gts
+287048 jgqjszsr
+dir mps
+dir sjt
+dir zvbwsw
+$ cd mps
+$ ls
+dir djtchhmw
+153066 dnpv.vff
+185096 slpz.phm
+$ cd djtchhmw
+$ ls
+310736 ddhfvv.lzl
+234532 hghrcqfd.hpn
+276144 hrtbfww.gts
+$ cd ..
+$ cd ..
+$ cd sjt
+$ ls
+dir btgrv
+dir csn
+dir ddhfvv
+dir dfbjz
+dir djtchhmw
+dir qdms
+45629 qgj.jjs
+dir rdqbdtdh
+235189 wcrsz.ccc
+$ cd btgrv
+$ ls
+dir rnhq
+$ cd rnhq
+$ ls
+205285 vmmcdr
+$ cd ..
+$ cd ..
+$ cd csn
+$ ls
+234221 nhw.rml
+$ cd ..
+$ cd ddhfvv
+$ ls
+dir glbf
+56038 gvbzwds.cff
+dir qtc
+308363 rdzj.sqr
+dir vlrs
+dir vzhm
+dir wwghpsds
+287177 zznmdh.nhn
+$ cd glbf
+$ ls
+128210 btgrv.zqp
+205284 dnt.jrd
+135774 pmnbbb
+$ cd ..
+$ cd qtc
+$ ls
+292185 zsqz
+$ cd ..
+$ cd vlrs
+$ ls
+dir btgrv
+dir jlbjlzzs
+dir lnqcr
+$ cd btgrv
+$ ls
+277089 bcpdvwqs.dmw
+262922 hghrcqfd.hpn
+$ cd ..
+$ cd jlbjlzzs
+$ ls
+95245 vmmcdr
+$ cd ..
+$ cd lnqcr
+$ ls
+172326 qsrcb.fpd
+$ cd ..
+$ cd ..
+$ cd vzhm
+$ ls
+203623 fvhmzqc.dmm
+$ cd ..
+$ cd wwghpsds
+$ ls
+60280 vmmcdr
+$ cd ..
+$ cd ..
+$ cd dfbjz
+$ ls
+262505 blc.lhp
+24423 ddhfvv
+296606 fvhmzqc.ptz
+98808 hghrcqfd.hpn
+$ cd ..
+$ cd djtchhmw
+$ ls
+278654 hghrcqfd.hpn
+$ cd ..
+$ cd qdms
+$ ls
+dir djtchhmw
+154536 jjshzrhd.stf
+dir sgh
+$ cd djtchhmw
+$ ls
+246903 hghrcqfd.hpn
+$ cd ..
+$ cd sgh
+$ ls
+265535 btgrv.frs
+299957 hffpl.qzw
+$ cd ..
+$ cd ..
+$ cd rdqbdtdh
+$ ls
+dir btgrv
+dir djtchhmw
+182591 jjshzrhd
+22987 jjshzrhd.qwp
+dir jmc
+185957 mthrpb.qmm
+$ cd btgrv
+$ ls
+dir btgrv
+9328 ddhfvv
+7652 hghrcqfd.hpn
+53498 wgdffcr
+$ cd btgrv
+$ ls
+dir czgrcv
+171099 hrtbfww.gts
+22232 lqwvnz
+dir mfhbd
+193089 scld.jpg
+75876 vmmcdr
+226425 wgdffcr
+$ cd czgrcv
+$ ls
+276374 lfctmv.dbp
+268014 mpvb.rfg
+180548 wgdffcr
+$ cd ..
+$ cd mfhbd
+$ ls
+67713 fvhmzqc.llz
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd djtchhmw
+$ ls
+3290 ddhfvv.vsl
+dir fvhmzqc
+168684 hghrcqfd.hpn
+dir jmqwll
+80802 qmfhm.gtf
+282318 rzn.chg
+148018 wgdffcr
+$ cd fvhmzqc
+$ ls
+dir bjpvn
+87780 hghrcqfd.hpn
+209282 vtv.wbt
+$ cd bjpvn
+$ ls
+126911 rcq
+$ cd ..
+$ cd ..
+$ cd jmqwll
+$ ls
+240811 vmmcdr
+$ cd ..
+$ cd ..
+$ cd jmc
+$ ls
+320199 btgrv.ntz
+11100 jwcvvfnb.grd
+145758 wgdffcr
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd zvbwsw
+$ ls
+dir fvhmzqc
+$ cd fvhmzqc
+$ ls
+169680 rlnvr.bwd
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd cbcwz
+$ ls
+82379 hrtbfww.gts
+$ cd ..
+$ cd fvhmzqc
+$ ls
+140571 hrtbfww.gts
+dir hvnt
+dir jbc
+dir mzzfssn
+dir npdccs
+dir wrzzq
+$ cd hvnt
+$ ls
+102394 hrtbfww.gts
+29683 hsgstppl
+dir rmrc
+134244 rsjrj.gbr
+231284 wqhndr.hlr
+207733 wtjz
+$ cd rmrc
+$ ls
+dir btgrv
+259148 hrjqjdqq.tvm
+$ cd btgrv
+$ ls
+240410 tqv
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd jbc
+$ ls
+140479 fvhmzqc.pvm
+$ cd ..
+$ cd mzzfssn
+$ ls
+78226 brtbv.gtp
+61906 btgrv
+168944 nqll
+111153 qmrsgwh
+$ cd ..
+$ cd npdccs
+$ ls
+65889 wfpvp.wsg
+$ cd ..
+$ cd wrzzq
+$ ls
+dir btgrv
+82867 djtchhmw
+dir dzzv
+dir lpz
+dir mqqlhnvh
+$ cd btgrv
+$ ls
+dir dppvz
+dir glmtpswv
+dir qfgqfzm
+dir qhb
+$ cd dppvz
+$ ls
+296857 hrtbfww.gts
+11272 jjshzrhd
+$ cd ..
+$ cd glmtpswv
+$ ls
+268244 cgntm.tcf
+dir jjshzrhd
+dir lqnb
+128070 tzctcnq.gwr
+110659 wnrblpbs.wqf
+$ cd jjshzrhd
+$ ls
+dir cwdwh
+173945 fzstdt.pdn
+224834 nnvnqrh.zld
+dir tfzp
+$ cd cwdwh
+$ ls
+dir btgrv
+315172 ddhfvv.vdc
+109603 dsqjgv
+dir hnp
+284882 mnsb.cdh
+247067 qtntt.jhn
+200809 tvtbfn
+$ cd btgrv
+$ ls
+74389 ndfzlfzf.lth
+$ cd ..
+$ cd hnp
+$ ls
+242535 ddhfvv
+256542 nslg.qcc
+143475 wbzjdrhd.gbr
+$ cd ..
+$ cd ..
+$ cd tfzp
+$ ls
+46652 djtchhmw
+167857 rtqcpsd
+$ cd ..
+$ cd ..
+$ cd lqnb
+$ ls
+186160 ddhfvv
+287136 wgdffcr
+$ cd ..
+$ cd ..
+$ cd qfgqfzm
+$ ls
+212359 btgrv.hjj
+$ cd ..
+$ cd qhb
+$ ls
+15584 djtchhmw
+$ cd ..
+$ cd ..
+$ cd dzzv
+$ ls
+141830 hrtbfww.gts
+$ cd ..
+$ cd lpz
+$ ls
+dir djtchhmw
+14679 jjshzrhd
+dir pbcrz
+$ cd djtchhmw
+$ ls
+dir fvhmzqc
+250329 hnhzlwrm.bqp
+dir jjshzrhd
+262196 jjshzrhd.gnz
+dir qpc
+dir svmmjlr
+dir tddmdzd
+236002 vmmcdr
+101814 vwpnztc
+$ cd fvhmzqc
+$ ls
+44990 fvhmzqc.ngb
+235856 hlbhsz
+219184 hrtbfww.gts
+$ cd ..
+$ cd jjshzrhd
+$ ls
+190311 clbzz
+$ cd ..
+$ cd qpc
+$ ls
+217404 jjshzrhd.nwv
+142286 pgjgsh.sdd
+$ cd ..
+$ cd svmmjlr
+$ ls
+82636 cvbhsch
+287045 fvhmzqc.rjh
+48607 vmmcdr
+$ cd ..
+$ cd tddmdzd
+$ ls
+dir cjfjmjnh
+dir fjwwn
+7777 hghrcqfd.hpn
+220410 tgfqgcc.ngd
+$ cd cjfjmjnh
+$ ls
+dir gcs
+$ cd gcs
+$ ls
+210998 nzzjl
+79843 zltwtmnv
+$ cd ..
+$ cd ..
+$ cd fjwwn
+$ ls
+17068 rht.hhw
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd pbcrz
+$ ls
+41401 tzqjl.bhn
+144639 zqght
+$ cd ..
+$ cd ..
+$ cd mqqlhnvh
+$ ls
+dir bmcqbq
+dir cqh
+dir jjshzrhd
+dir lbvrm
+dir lwmbvsjj
+dir rrcnhbn
+67325 tfcl.npl
+$ cd bmcqbq
+$ ls
+dir bwjhtvcm
+dir wzmg
+$ cd bwjhtvcm
+$ ls
+156583 qdjmmdq
+$ cd ..
+$ cd wzmg
+$ ls
+dir ddhfvv
+dir tlhc
+$ cd ddhfvv
+$ ls
+dir jjshzrhd
+$ cd jjshzrhd
+$ ls
+202499 ddhfvv
+$ cd ..
+$ cd ..
+$ cd tlhc
+$ ls
+dir lbpmtft
+$ cd lbpmtft
+$ ls
+43196 lthlvv
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd cqh
+$ ls
+dir btgrv
+35483 djtchhmw
+318895 sfqdbd
+62778 twdpcn.rzg
+dir vwdqmtwf
+$ cd btgrv
+$ ls
+dir hrbjmbf
+dir npffrswd
+$ cd hrbjmbf
+$ ls
+196766 crw.dht
+$ cd ..
+$ cd npffrswd
+$ ls
+dir jjshzrhd
+$ cd jjshzrhd
+$ ls
+161401 dsqqh.pqg
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd vwdqmtwf
+$ ls
+299604 qrdcnbt.wmh
+$ cd ..
+$ cd ..
+$ cd jjshzrhd
+$ ls
+62584 dzfvzrf.tmc
+255105 hwfh.tfd
+$ cd ..
+$ cd lbvrm
+$ ls
+dir btgrv
+dir pvnbdwjj
+21599 tjfd.jzf
+315782 wgdffcr
+dir znz
+$ cd btgrv
+$ ls
+dir qjbhvdm
+$ cd qjbhvdm
+$ ls
+115711 mjhcwn
+$ cd ..
+$ cd ..
+$ cd pvnbdwjj
+$ ls
+156828 hrtbfww.gts
+dir jjshzrhd
+208415 vmmcdr
+$ cd jjshzrhd
+$ ls
+131751 hwfh.tfd
+$ cd ..
+$ cd ..
+$ cd znz
+$ ls
+dir ddhfvv
+150828 gpcpnwj.fzv
+119331 hrtbfww.gts
+263285 nntqssp.hqg
+dir pwtbr
+236806 vmmcdr
+$ cd ddhfvv
+$ ls
+265355 ddhfvv.bpb
+$ cd ..
+$ cd pwtbr
+$ ls
+212361 jjshzrhd.nmh
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd lwmbvsjj
+$ ls
+275264 bvbq.rdf
+dir ddhfvv
+257257 fsql
+210469 jmvchpn
+57627 lrnhn
+270278 vmmcdr
+dir vrqmtl
+$ cd ddhfvv
+$ ls
+244640 nhdztzsg
+$ cd ..
+$ cd vrqmtl
+$ ls
+123207 btgrv.qsg
+152242 qsqt
+259711 scvzvns.vvh
+$ cd ..
+$ cd ..
+$ cd rrcnhbn
+$ ls
+dir jjshzrhd
+$ cd jjshzrhd
+$ ls
+63581 btgrv.pbj
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd hqmlnpn
+$ ls
+dir djtchhmw
+dir dlqjbqbr
+240226 fdmchrth
+dir fvhmzqc
+39519 hvtvcdv
+140559 hwfh.tfd
+243880 lvcwjnzb.ptf
+dir nppp
+162576 rmqmd.wdt
+dir rscgvrdt
+dir sdcbr
+$ cd djtchhmw
+$ ls
+33004 ddhfvv.ghw
+$ cd ..
+$ cd dlqjbqbr
+$ ls
+dir fvhmzqc
+dir jjshzrhd
+dir ncwldt
+dir wfw
+$ cd fvhmzqc
+$ ls
+dir brfl
+dir ccnlzrb
+dir cjtl
+dir dfvt
+123279 fvhmzqc.qfp
+dir ppshjv
+dir smprwhmg
+$ cd brfl
+$ ls
+291222 djtchhmw.grj
+102020 hghrcqfd.hpn
+197538 hwfh.tfd
+82351 qqq.cqf
+254314 ztthgs
+$ cd ..
+$ cd ccnlzrb
+$ ls
+dir rzmdmq
+$ cd rzmdmq
+$ ls
+265088 rqtm.zmv
+$ cd ..
+$ cd ..
+$ cd cjtl
+$ ls
+107485 djtchhmw.phc
+$ cd ..
+$ cd dfvt
+$ ls
+114165 dts.rlc
+201057 frljlqzr.clp
+$ cd ..
+$ cd ppshjv
+$ ls
+305733 djtchhmw.ntn
+$ cd ..
+$ cd smprwhmg
+$ ls
+76792 ddhfvv
+$ cd ..
+$ cd ..
+$ cd jjshzrhd
+$ ls
+19740 fvhmzqc
+dir lqgsw
+dir lsmccpj
+17490 mlzznrc.mst
+$ cd lqgsw
+$ ls
+297439 crqjmhrb.grs
+$ cd ..
+$ cd lsmccpj
+$ ls
+89758 btgrv.cpt
+49280 ddhfvv.drt
+dir gclrgz
+dir gnrztgj
+275064 jjshzrhd.jzv
+98597 nbscl.wvs
+225844 vmmcdr
+$ cd gclrgz
+$ ls
+63611 djtchhmw.vfn
+156340 gbhsz
+$ cd ..
+$ cd gnrztgj
+$ ls
+23195 btgrv
+287815 fhthsd
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ncwldt
+$ ls
+70881 vmwllc.fbf
+$ cd ..
+$ cd wfw
+$ ls
+309325 ddhfvv.pqm
+201372 fvhmzqc.rfl
+143184 hghrcqfd.hpn
+51325 vlq.wgr
+$ cd ..
+$ cd ..
+$ cd fvhmzqc
+$ ls
+234497 ddhfvv.wlg
+dir fvhmzqc
+197961 fzbsr
+dir jsfbvwb
+$ cd fvhmzqc
+$ ls
+208299 bgpncvh.jhl
+$ cd ..
+$ cd jsfbvwb
+$ ls
+175184 ddhfvv.tpq
+85214 djtchhmw.btf
+2012 ttbpmsg.mlb
+$ cd ..
+$ cd ..
+$ cd nppp
+$ ls
+223933 wgdffcr
+$ cd ..
+$ cd rscgvrdt
+$ ls
+207388 glgbngv.lcd
+$ cd ..
+$ cd sdcbr
+$ ls
+277288 btgrv.phv
+49684 ddhfvv
+195222 dntzwh
+dir frcj
+206408 gfttdcnq
+147023 hrtbfww.gts
+dir tcwpvrr
+$ cd frcj
+$ ls
+37309 ctpjbmh
+54747 hwfh.tfd
+151065 phvllpq.gvh
+$ cd ..
+$ cd tcwpvrr
+$ ls
+63500 chsgcw.frm
+dir ltwvvrv
+113779 mgdqjg
+177222 vzgpfpq.qln
+$ cd ltwvvrv
+$ ls
+102472 vmmcdr
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd rbztmqjn
+$ ls
+216106 fnzwzdb.wrc
+$ cd ..
+$ cd vfrtt
+$ ls
+dir ddhfvv
+dir ftrqt
+dir fvhmzqc
+186081 hwfh.tfd
+dir jjshzrhd
+dir mzfq
+dir nhzz
+dir zblsznh
+$ cd ddhfvv
+$ ls
+28659 glfpm.hnp
+274896 hrtbfww.gts
+dir lwblgr
+dir qmc
+dir thwccb
+dir tmlwvtmc
+228636 zrn.ftn
+$ cd lwblgr
+$ ls
+237410 djtchhmw.fjz
+209100 hghrcqfd.hpn
+317411 nsgtmddt.jvj
+30033 pbhc.blz
+8818 pwf.vjv
+$ cd ..
+$ cd qmc
+$ ls
+249328 cwftvdws
+41124 pwmzz
+99884 qbvpslt
+$ cd ..
+$ cd thwccb
+$ ls
+dir ddhfvv
+$ cd ddhfvv
+$ ls
+49107 fvhmzqc.slp
+$ cd ..
+$ cd ..
+$ cd tmlwvtmc
+$ ls
+dir djtchhmw
+115288 gfdzqrb
+248419 hrtbfww.gts
+$ cd djtchhmw
+$ ls
+14211 qffwlmvm.fhp
+dir tzbd
+67495 wwttgflg.rcl
+$ cd tzbd
+$ ls
+278463 btgrv.ldc
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ftrqt
+$ ls
+95545 ddhfvv
+180375 hwfh.tfd
+$ cd ..
+$ cd fvhmzqc
+$ ls
+161318 gtwj
+$ cd ..
+$ cd jjshzrhd
+$ ls
+91626 prmznc.gwp
+dir wltvrv
+$ cd wltvrv
+$ ls
+299813 hrtbfww.gts
+$ cd ..
+$ cd ..
+$ cd mzfq
+$ ls
+101218 jjshzrhd.nwz
+200289 njwfbc.bhb
+$ cd ..
+$ cd nhzz
+$ ls
+225881 hwfh.tfd
+210133 mlb.wrt
+$ cd ..
+$ cd zblsznh
+$ ls
+dir fvhmzqc
+214252 hrtbfww.gts
+250855 qbjphgwn.vvj
+dir tdpv
+173807 wgdffcr
+$ cd fvhmzqc
+$ ls
+dir djtchhmw
+dir fsqdcwr
+dir jjshzrhd
+dir zljhz
+$ cd djtchhmw
+$ ls
+dir sdrjlqqm
+$ cd sdrjlqqm
+$ ls
+91244 fvhmzqc
+$ cd ..
+$ cd ..
+$ cd fsqdcwr
+$ ls
+dir ddhfvv
+dir nhmhgzt
+dir pdhbd
+$ cd ddhfvv
+$ ls
+199548 qwc
+$ cd ..
+$ cd nhmhgzt
+$ ls
+106393 ddhfvv.sjg
+$ cd ..
+$ cd pdhbd
+$ ls
+207023 hngmj.qls
+$ cd ..
+$ cd ..
+$ cd jjshzrhd
+$ ls
+84955 vmmcdr
+$ cd ..
+$ cd zljhz
+$ ls
+dir dmqmc
+dir jnlgsgn
+dir mhtmt
+dir mqtmpht
+$ cd dmqmc
+$ ls
+dir djtchhmw
+$ cd djtchhmw
+$ ls
+166369 hrtbfww.gts
+$ cd ..
+$ cd ..
+$ cd jnlgsgn
+$ ls
+289581 vrbqvt.bgn
+$ cd ..
+$ cd mhtmt
+$ ls
+182104 hrtbfww.gts
+285446 spgtjm.lhj
+$ cd ..
+$ cd mqtmpht
+$ ls
+179017 bgfgtqr.snr
+dir czqj
+dir gdc
+104624 jjshzrhd
+314246 mhvzncnt.vjd
+$ cd czqj
+$ ls
+69494 hft.fsp
+$ cd ..
+$ cd gdc
+$ ls
+84423 bhqnfj.cts
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd tdpv
+$ ls
+dir frgfgd
+dir sggm
+274423 zzfsmdf
+$ cd frgfgd
+$ ls
+205662 vmmcdr
+$ cd ..
+$ cd sggm
+$ ls
+260269 wzpjsjnq.nvt
diff --git a/src/cli/commands/day001.rs b/src/cli/commands/day001.rs
index 991b5b5..5e7959f 100644
--- a/src/cli/commands/day001.rs
+++ b/src/cli/commands/day001.rs
@@ -1,4 +1,4 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
 use crate::util::read_lines;
 
 pub fn subcmd_day001(file: &Option<PathBuf>, top: &i32, total: &bool) {
diff --git a/src/cli/commands/day002.rs b/src/cli/commands/day002.rs
index 0506888..24a1ef5 100644
--- a/src/cli/commands/day002.rs
+++ b/src/cli/commands/day002.rs
@@ -1,4 +1,4 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
 use crate::util::read_lines;
 
 #[derive(Debug)]
diff --git a/src/cli/commands/day003.rs b/src/cli/commands/day003.rs
index 394bf0e..9df6dee 100644
--- a/src/cli/commands/day003.rs
+++ b/src/cli/commands/day003.rs
@@ -1,4 +1,4 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
 use crate::util::read_lines;
 
 #[derive(Debug,Clone)]
diff --git a/src/cli/commands/day005.rs b/src/cli/commands/day005.rs
index 99e11ae..16794e1 100644
--- a/src/cli/commands/day005.rs
+++ b/src/cli/commands/day005.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day005(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day006.rs b/src/cli/commands/day006.rs
index 18923be..d21cb9a 100644
--- a/src/cli/commands/day006.rs
+++ b/src/cli/commands/day006.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day006(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day007.rs b/src/cli/commands/day007.rs
index 21a9f06..d3a26ec 100644
--- a/src/cli/commands/day007.rs
+++ b/src/cli/commands/day007.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day007(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day008.rs b/src/cli/commands/day008.rs
index cffcef2..108524c 100644
--- a/src/cli/commands/day008.rs
+++ b/src/cli/commands/day008.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day008(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day009.rs b/src/cli/commands/day009.rs
index 71b54e1..ef19ffe 100644
--- a/src/cli/commands/day009.rs
+++ b/src/cli/commands/day009.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day009(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day010.rs b/src/cli/commands/day010.rs
index 00c7d54..074f7c8 100644
--- a/src/cli/commands/day010.rs
+++ b/src/cli/commands/day010.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day010(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day011.rs b/src/cli/commands/day011.rs
index 92b7741..5894a9b 100644
--- a/src/cli/commands/day011.rs
+++ b/src/cli/commands/day011.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day011(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day012.rs b/src/cli/commands/day012.rs
index 6a88711..8f6afbf 100644
--- a/src/cli/commands/day012.rs
+++ b/src/cli/commands/day012.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day012(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day013.rs b/src/cli/commands/day013.rs
index 62ca037..6ed5fa5 100644
--- a/src/cli/commands/day013.rs
+++ b/src/cli/commands/day013.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day013(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day014.rs b/src/cli/commands/day014.rs
index fa807d2..e0079f0 100644
--- a/src/cli/commands/day014.rs
+++ b/src/cli/commands/day014.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day014(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day015.rs b/src/cli/commands/day015.rs
index 7032f2b..62c35a9 100644
--- a/src/cli/commands/day015.rs
+++ b/src/cli/commands/day015.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day015(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day016.rs b/src/cli/commands/day016.rs
index 4384145..31ff19f 100644
--- a/src/cli/commands/day016.rs
+++ b/src/cli/commands/day016.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day016(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day017.rs b/src/cli/commands/day017.rs
index e1ebc60..3462d7c 100644
--- a/src/cli/commands/day017.rs
+++ b/src/cli/commands/day017.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day017(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day018.rs b/src/cli/commands/day018.rs
index d4bce8d..0320b66 100644
--- a/src/cli/commands/day018.rs
+++ b/src/cli/commands/day018.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day018(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day019.rs b/src/cli/commands/day019.rs
index 599aa5c..c5d2db4 100644
--- a/src/cli/commands/day019.rs
+++ b/src/cli/commands/day019.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day019(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day020.rs b/src/cli/commands/day020.rs
index e946dd1..f2a491e 100644
--- a/src/cli/commands/day020.rs
+++ b/src/cli/commands/day020.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day020(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day021.rs b/src/cli/commands/day021.rs
index 9083a33..1f7d36c 100644
--- a/src/cli/commands/day021.rs
+++ b/src/cli/commands/day021.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day021(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day022.rs b/src/cli/commands/day022.rs
index 8dcd9d5..ae04709 100644
--- a/src/cli/commands/day022.rs
+++ b/src/cli/commands/day022.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day022(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day023.rs b/src/cli/commands/day023.rs
index 7274cd7..ebea5a4 100644
--- a/src/cli/commands/day023.rs
+++ b/src/cli/commands/day023.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day023(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day024.rs b/src/cli/commands/day024.rs
index 4be87f6..46cb853 100644
--- a/src/cli/commands/day024.rs
+++ b/src/cli/commands/day024.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day024(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/day025.rs b/src/cli/commands/day025.rs
index e543a08..0537f88 100644
--- a/src/cli/commands/day025.rs
+++ b/src/cli/commands/day025.rs
@@ -1,6 +1,12 @@
-use crate::cli::PathBuf;
+use std::path::PathBuf;
+use std::fs::File;
+use std::io::{BufReader,Lines};
 use crate::util::read_lines;
 
+fn part1(lines: Lines<BufReader<File>>) {
+
+}
+
 pub fn subcmd_day025(file: &Option<PathBuf>, alt: &bool) {
     if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
 
diff --git a/src/cli/commands/mod.rs b/src/cli/commands/mod.rs
index 08d41ed..15d7614 100644
--- a/src/cli/commands/mod.rs
+++ b/src/cli/commands/mod.rs
@@ -1,3 +1,25 @@
 pub mod day001;
 pub mod day002;
 pub mod day003;
+pub mod day004;
+pub mod day005;
+pub mod day006;
+pub mod day007;
+pub mod day008;
+pub mod day009;
+pub mod day010;
+pub mod day011;
+pub mod day012;
+pub mod day013;
+pub mod day014;
+pub mod day015;
+pub mod day016;
+pub mod day017;
+pub mod day018;
+pub mod day019;
+pub mod day020;
+pub mod day021;
+pub mod day022;
+pub mod day023;
+pub mod day024;
+pub mod day025;
\ No newline at end of file
diff --git a/src/cli/mod.rs b/src/cli/mod.rs
index 2dee40f..be32135 100644
--- a/src/cli/mod.rs
+++ b/src/cli/mod.rs
@@ -3,6 +3,11 @@ use clap::{arg, Parser, Subcommand};
 use commands::day001::*;
 use commands::day002::*;
 use commands::day003::*;
+use commands::day004::*;
+use commands::day005::*;
+use commands::day006::*;
+use commands::day007::*;
+use commands::day008::*;
 //use std::ffi::OsString;
 use std::path::PathBuf;
 
@@ -44,6 +49,36 @@ pub enum Commands {
         #[arg(long)]
         alt: bool,
     },
+    /// Solution for day 04
+    Day004 {
+        file: Option<PathBuf>,
+        #[arg(long)]
+        alt: bool,
+    },
+    /// Solution for day 05
+    Day005 {
+        file: Option<PathBuf>,
+        #[arg(long)]
+        alt: bool,
+    },
+    /// Solution for day 06
+    Day006 {
+        file: Option<PathBuf>,
+        #[arg(long)]
+        alt: bool,
+    },
+    /// Solution for day 07
+    Day007 {
+        file: Option<PathBuf>,
+        #[arg(long)]
+        alt: bool,
+    },
+    /// Solution for day 08
+    Day008 {
+        file: Option<PathBuf>,
+        #[arg(long)]
+        alt: bool,
+    },
 }
 
 pub fn execute_cli() {
@@ -57,5 +92,10 @@ pub fn execute_cli() {
             _ => panic!(),
         },
         Commands::Day003 { file, alt } => subcmd_day003(&file, &alt),
+        Commands::Day004 { file, alt } => subcmd_day004(&file, &alt),
+        Commands::Day005 { file, alt } => subcmd_day005(&file, &alt),
+        Commands::Day006 { file, alt } => subcmd_day006(&file, &alt),
+        Commands::Day007 { file, alt } => subcmd_day007(&file, &alt),
+        Commands::Day008 { file, alt } => subcmd_day008(&file, &alt)
     }
 }
diff --git a/src/util.rs b/src/util.rs
index b9e4782..1a004ff 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -1,11 +1,11 @@
 use std::fs::File;
-use std::io::{self, BufRead};
+use std::io::{Result, BufRead, BufReader,Lines};
 use std::path::Path;
 
-pub fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
+pub fn read_lines<P>(filename: P) -> Result<Lines<BufReader<File>>>
 where
 P: AsRef<Path>,
 {
     let file = File::open(filename)?;
-    Ok(io::BufReader::new(file).lines())
+    Ok(BufReader::new(file).lines())
 }