From e7892906d678209484d1169f7ee07b0d01452740 Mon Sep 17 00:00:00 2001
From: Brian Buller <brian@bullercodeworks.com>
Date: Wed, 7 Dec 2022 07:51:21 -0600
Subject: [PATCH] 2022 Day 7 Complete!

---
 2022/day07/input     | 1091 ++++++++++++++++++++++++++++++++++++++++++
 2022/day07/main.go   |  212 ++++++++
 2022/day07/problem   |  151 ++++++
 2022/day07/testinput |   23 +
 4 files changed, 1477 insertions(+)
 create mode 100644 2022/day07/input
 create mode 100644 2022/day07/main.go
 create mode 100644 2022/day07/problem
 create mode 100644 2022/day07/testinput

diff --git a/2022/day07/input b/2022/day07/input
new file mode 100644
index 0000000..3a8fce3
--- /dev/null
+++ b/2022/day07/input
@@ -0,0 +1,1091 @@
+$ cd /
+$ ls
+dir fts
+dir jnwr
+dir lrvl
+dir nzgprvw
+dir snwqjgj
+16394 tllvcdr.sjl
+195891 zbdp.gqb
+dir zddrb
+$ cd fts
+$ ls
+dir dlqtffw
+dir rbfmmjvd
+254713 wvwhrb.dhh
+$ cd dlqtffw
+$ ls
+73533 nqbvg.fgd
+$ cd ..
+$ cd rbfmmjvd
+$ ls
+290697 zcgrgff.fnf
+$ cd ..
+$ cd ..
+$ cd jnwr
+$ ls
+323577 ghmtnzr
+57588 tdcbdpnr
+dir wbv
+dir zzbvdcf
+$ cd wbv
+$ ls
+dir nmdwbnnr
+253584 slzdbm.ncn
+$ cd nmdwbnnr
+$ ls
+208370 scbcsb.pjg
+$ cd ..
+$ cd ..
+$ cd zzbvdcf
+$ ls
+8052 ssssrhwz
+$ cd ..
+$ cd ..
+$ cd lrvl
+$ ls
+dir bqqltcg
+189288 cwpwh
+90813 jhnddzml.lww
+dir pwc
+dir rjl
+dir rzvqvv
+dir slzdbm
+dir tcbjmq
+140665 zbdp.gqb
+dir zhbpqlnd
+$ cd bqqltcg
+$ ls
+dir dlbjblbf
+dir fdlw
+dir jnwr
+dir slzdbm
+dir zcgrgff
+$ cd dlbjblbf
+$ ls
+11732 rnsrrf.rtv
+$ cd ..
+$ cd fdlw
+$ ls
+dir hlvpfw
+228436 mzsfcvgv.pqw
+$ cd hlvpfw
+$ ls
+dir dhwq
+$ cd dhwq
+$ ls
+127459 cgdpqh.tct
+58310 jnwr.nqt
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd jnwr
+$ ls
+305998 ssssrhwz
+129135 vrt.qdt
+86204 wnvm.bld
+$ cd ..
+$ cd slzdbm
+$ ls
+40915 zbdp.gqb
+120991 zsvffwlt.rbp
+$ cd ..
+$ cd zcgrgff
+$ ls
+94614 jnwr.mqm
+191626 zbdp.gqb
+dir ztrslh
+$ cd ztrslh
+$ ls
+dir bhzn
+201167 dvcjtzvs.rvd
+dir slzdbm
+dir szrth
+dir zcp
+$ cd bhzn
+$ ls
+119164 qbgmrqw
+102090 zbdp.gqb
+$ cd ..
+$ cd slzdbm
+$ ls
+124928 gtdq
+$ cd ..
+$ cd szrth
+$ ls
+dir hpbbsq
+dir vlwlsdjp
+dir zcgrgff
+$ cd hpbbsq
+$ ls
+151717 qsdhff.jsv
+$ cd ..
+$ cd vlwlsdjp
+$ ls
+15049 glpdjtq.mwm
+302526 jnwr.tds
+9550 lhwtbh
+22857 ssssrhwz
+$ cd ..
+$ cd zcgrgff
+$ ls
+73640 mpq.cdn
+dir zcgrgff
+$ cd zcgrgff
+$ ls
+115955 rssmrfbq.trs
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd zcp
+$ ls
+dir qdjtmwrr
+dir wpdjttm
+$ cd qdjtmwrr
+$ ls
+138185 jnwr
+$ cd ..
+$ cd wpdjttm
+$ ls
+207755 vvwtghjb
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd pwc
+$ ls
+15911 fqw
+$ cd ..
+$ cd rjl
+$ ls
+119274 ssssrhwz
+$ cd ..
+$ cd rzvqvv
+$ ls
+273935 ssssrhwz
+$ cd ..
+$ cd slzdbm
+$ ls
+dir hlvpfw
+290414 lgzbzjvd.glj
+dir ljpmphn
+316440 slzdbm.tsj
+$ cd hlvpfw
+$ ls
+dir mhvmszgh
+107004 slzdbm
+$ cd mhvmszgh
+$ ls
+dir tftstdp
+$ cd tftstdp
+$ ls
+176794 mpq.cdn
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ljpmphn
+$ ls
+37528 slfdb.bqt
+$ cd ..
+$ cd ..
+$ cd tcbjmq
+$ ls
+96506 lrz.nhb
+$ cd ..
+$ cd zhbpqlnd
+$ ls
+14027 ccswrthv.pfd
+dir clnqtjz
+dir fdsqmnn
+dir fwdt
+dir nljb
+dir npmsdrgp
+57812 slfdb.bqt
+184299 wmlmg
+241025 zcgrgff.wbh
+dir zggqfj
+$ cd clnqtjz
+$ ls
+62391 cbhw.wgr
+309318 jlm.lfq
+dir mzsfcvgv
+dir rrn
+307583 ssssrhwz
+$ cd mzsfcvgv
+$ ls
+1356 hrbh.wpz
+dir vnwqstw
+$ cd vnwqstw
+$ ls
+184434 hnhzdshl.lrl
+150624 wsrnprdb.pjf
+$ cd ..
+$ cd ..
+$ cd rrn
+$ ls
+105792 dzprqqc.rbh
+107482 ffdjdbc
+dir hnr
+dir rdmgtf
+dir rgrwp
+325147 shqr.pdj
+43186 slfdb.bqt
+236667 zcgrgff
+$ cd hnr
+$ ls
+dir gljrlhjm
+250526 mzsfcvgv.nsb
+43164 ssssrhwz
+$ cd gljrlhjm
+$ ls
+dir wjwqrnj
+$ cd wjwqrnj
+$ ls
+142366 gshl.qfc
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd rdmgtf
+$ ls
+193562 gdrdnc.vml
+123723 hmqfdht
+dir lzfntb
+dir mjfwsmgd
+208819 nqbgcn.qfq
+dir tqh
+$ cd lzfntb
+$ ls
+dir gwnpsvw
+dir rsgwzhp
+103487 scvllbjh.pnw
+$ cd gwnpsvw
+$ ls
+dir lqnz
+81937 zbdp.gqb
+$ cd lqnz
+$ ls
+27250 zcgrgff
+$ cd ..
+$ cd ..
+$ cd rsgwzhp
+$ ls
+dir hhz
+$ cd hhz
+$ ls
+46435 djvfz
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd mjfwsmgd
+$ ls
+25726 clcvm
+170085 zbdp.gqb
+$ cd ..
+$ cd tqh
+$ ls
+111272 gdq.llg
+3215 hdghs
+dir lpdcdr
+dir vhfr
+$ cd lpdcdr
+$ ls
+203902 hmqfdht
+$ cd ..
+$ cd vhfr
+$ ls
+91584 hmqfdht
+dir stmvj
+$ cd stmvj
+$ ls
+315660 wwpq.ffq
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd rgrwp
+$ ls
+dir dhwtfld
+187439 hmqfdht
+dir jnwr
+dir npr
+dir sdsppq
+228581 twd.nnc
+42349 wbf.cwb
+194162 zbdp.gqb
+224441 zcgrgff.qpg
+$ cd dhwtfld
+$ ls
+152381 dqdrd
+$ cd ..
+$ cd jnwr
+$ ls
+229758 hmvw.gdz
+92710 mzsfcvgv.cdd
+79954 stjtn.gft
+89831 zbdp.gqb
+$ cd ..
+$ cd npr
+$ ls
+52767 hlvpfw.rqb
+dir nrbjzvgq
+270579 pbsq.msg
+240181 slfdb.bqt
+dir znbwnh
+$ cd nrbjzvgq
+$ ls
+295237 bwqqvn
+229608 dhrjnvtt.lvm
+55391 nlvn
+dir zcgrgff
+$ cd zcgrgff
+$ ls
+124604 hlvpfw.mlw
+$ cd ..
+$ cd ..
+$ cd znbwnh
+$ ls
+228293 zcgrgff
+$ cd ..
+$ cd ..
+$ cd sdsppq
+$ ls
+235741 bcsdzpfj.lvd
+dir jnwr
+dir njtrhrfm
+dir tvq
+dir wshgn
+$ cd jnwr
+$ ls
+273541 brcps
+dir gjt
+dir hlvpfw
+dir nbsdvpnj
+dir zcgrgff
+$ cd gjt
+$ ls
+184707 zbdp.gqb
+$ cd ..
+$ cd hlvpfw
+$ ls
+242810 zcgrgff
+$ cd ..
+$ cd nbsdvpnj
+$ ls
+181797 hlvpfw.gsd
+294284 hmqfdht
+215098 mqbclwwq
+$ cd ..
+$ cd zcgrgff
+$ ls
+188814 hmqfdht
+$ cd ..
+$ cd ..
+$ cd njtrhrfm
+$ ls
+dir dqpjdztt
+$ cd dqpjdztt
+$ ls
+178036 vwg
+$ cd ..
+$ cd ..
+$ cd tvq
+$ ls
+233085 rmq.zgq
+215613 slzdbm.wvf
+$ cd ..
+$ cd wshgn
+$ ls
+209007 jnwr.hsr
+dir ntrlll
+$ cd ntrlll
+$ ls
+245558 jnwr.tbr
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd fdsqmnn
+$ ls
+dir dfl
+dir hqffnmq
+268076 zcgrgff.cfm
+dir ztc
+$ cd dfl
+$ ls
+5553 bbvqpgf
+128390 lqtvvc.tdj
+190189 vnmfcdws
+$ cd ..
+$ cd hqffnmq
+$ ls
+28438 ssssrhwz
+$ cd ..
+$ cd ztc
+$ ls
+247470 slfdb.bqt
+$ cd ..
+$ cd ..
+$ cd fwdt
+$ ls
+60342 bdwbzpzz
+dir cdcc
+dir jldlzttm
+261042 ssssrhwz
+dir sws
+293090 zbdp.gqb
+93624 zcgrgff.vgh
+$ cd cdcc
+$ ls
+dir cwpfczr
+dir lsrgfml
+$ cd cwpfczr
+$ ls
+303853 wzz.chs
+$ cd ..
+$ cd lsrgfml
+$ ls
+63205 hmqfdht
+$ cd ..
+$ cd ..
+$ cd jldlzttm
+$ ls
+184715 brclwptp
+309967 gdbfh.vhn
+5460 hlvpfw.fwb
+46159 jnwr.ggw
+173896 zbdp.gqb
+$ cd ..
+$ cd sws
+$ ls
+dir hlvpfw
+75133 nqrp.jdg
+$ cd hlvpfw
+$ ls
+71403 cvdd.whl
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd nljb
+$ ls
+105380 lrhmdl
+$ cd ..
+$ cd npmsdrgp
+$ ls
+176062 bhm.gfd
+dir dgdl
+24535 fdfmntpt.qvp
+dir jnwr
+279503 ssssrhwz
+4671 zbdp.gqb
+$ cd dgdl
+$ ls
+4624 qqcp.rcg
+$ cd ..
+$ cd jnwr
+$ ls
+dir cvw
+122648 hmqfdht
+26565 jnwr.fst
+271544 jnwr.tqb
+170968 mpq.cdn
+dir ncqflwrb
+103826 qgzlff.frl
+dir wclwg
+dir wtcfswt
+$ cd cvw
+$ ls
+58583 pjthqdbr.zzh
+398 ssssrhwz
+$ cd ..
+$ cd ncqflwrb
+$ ls
+105747 wwstfng.cdl
+$ cd ..
+$ cd wclwg
+$ ls
+75020 wbq
+$ cd ..
+$ cd wtcfswt
+$ ls
+182813 dnln
+255923 hmqfdht
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd zggqfj
+$ ls
+dir gpnfpv
+dir gzfsnbv
+186684 jnwr
+dir msrz
+$ cd gpnfpv
+$ ls
+dir hlvpfw
+$ cd hlvpfw
+$ ls
+186814 bgqpn
+41444 mzsfcvgv.qpp
+292879 zcgrgff
+$ cd ..
+$ cd ..
+$ cd gzfsnbv
+$ ls
+321796 jnwr.ghb
+dir sdgwjtf
+$ cd sdgwjtf
+$ ls
+127216 mzsfcvgv.qlv
+$ cd ..
+$ cd ..
+$ cd msrz
+$ ls
+dir fzl
+32371 jqtgpzw.thg
+271389 slfdb.bqt
+270845 tchtnp.rsw
+146371 zmwbmj
+$ cd fzl
+$ ls
+140610 ssssrhwz
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd nzgprvw
+$ ls
+dir hgfdbf
+218138 mpq.cdn
+73419 slfdb.bqt
+dir vfztvnjm
+269866 wldptfv.bbb
+dir zgdsgh
+$ cd hgfdbf
+$ ls
+163792 ssssrhwz
+262305 zcgrgff
+$ cd ..
+$ cd vfztvnjm
+$ ls
+139863 hlvpfw
+138410 hmqfdht
+$ cd ..
+$ cd zgdsgh
+$ ls
+194820 dhp.tgt
+dir hlvpfw
+dir sdllphqd
+dir zcgrgff
+$ cd hlvpfw
+$ ls
+44509 hmqfdht
+$ cd ..
+$ cd sdllphqd
+$ ls
+47133 mpq.cdn
+$ cd ..
+$ cd zcgrgff
+$ ls
+186613 jrrpljrc
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd snwqjgj
+$ ls
+dir slzdbm
+dir zcgrgff
+dir zldscsc
+$ cd slzdbm
+$ ls
+21422 dplgjzvs.nrn
+175310 zcgrgff.dfq
+$ cd ..
+$ cd zcgrgff
+$ ls
+dir rrfhvjf
+275455 vwnvj.nhb
+dir zcgrgff
+$ cd rrfhvjf
+$ ls
+69149 mqmwv.jmr
+$ cd ..
+$ cd zcgrgff
+$ ls
+dir zcgrgff
+$ cd zcgrgff
+$ ls
+183398 hmqfdht
+93968 sdhmwd
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd zldscsc
+$ ls
+dir fmzvccvg
+299187 mpq.cdn
+324288 mzsfcvgv.srz
+dir prdfldrf
+dir sgpdqw
+289150 ssssrhwz
+3330 vwwj
+133537 wbb.fdl
+dir wjdpws
+$ cd fmzvccvg
+$ ls
+dir brrlg
+dir crm
+dir mzsfcvgv
+$ cd brrlg
+$ ls
+17776 jnwr.qqz
+$ cd ..
+$ cd crm
+$ ls
+220545 mltrj
+177044 mzsfcvgv.thj
+$ cd ..
+$ cd mzsfcvgv
+$ ls
+51223 pdnbml.qpg
+$ cd ..
+$ cd ..
+$ cd prdfldrf
+$ ls
+213872 ftw
+$ cd ..
+$ cd sgpdqw
+$ ls
+205684 whrfvw.dph
+$ cd ..
+$ cd wjdpws
+$ ls
+dir hlvpfw
+$ cd hlvpfw
+$ ls
+324522 zbdp.gqb
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd zddrb
+$ ls
+238213 dhrdjfzl.npj
+28938 hlvpfw
+313900 hlvpfw.bwd
+dir pgbgpn
+132967 rrhsr
+dir slzdbm
+142210 wlvpwjjz
+dir zdhcp
+$ cd pgbgpn
+$ ls
+dir jpmvrvt
+154268 mpq.cdn
+dir mzsfcvgv
+dir vvmwgngv
+$ cd jpmvrvt
+$ ls
+150157 ghcvqm
+$ cd ..
+$ cd mzsfcvgv
+$ ls
+93810 mjglpwbc.tvt
+dir slzdbm
+$ cd slzdbm
+$ ls
+dir jnwr
+174522 slzdbm.ncl
+$ cd jnwr
+$ ls
+183686 rpwjvc
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd vvmwgngv
+$ ls
+dir bqc
+dir mzsfcvgv
+dir qgj
+dir wfjzls
+$ cd bqc
+$ ls
+191442 bqsn
+dir lmnvtg
+278861 mpq.cdn
+191779 mthgd.mjp
+dir mzsfcvgv
+dir twzq
+$ cd lmnvtg
+$ ls
+dir dzdd
+7920 hmqfdht
+dir rnlctfm
+dir slzdbm
+213184 zcgrgff.vln
+$ cd dzdd
+$ ls
+dir jnwr
+$ cd jnwr
+$ ls
+71772 hlvpfw
+$ cd ..
+$ cd ..
+$ cd rnlctfm
+$ ls
+282289 jvnmblr.mdc
+24454 ssssrhwz
+$ cd ..
+$ cd slzdbm
+$ ls
+316131 mzsfcvgv.czz
+$ cd ..
+$ cd ..
+$ cd mzsfcvgv
+$ ls
+dir nsvn
+dir plj
+dir tvmv
+$ cd nsvn
+$ ls
+dir bcmd
+dir jcjsp
+dir jnwr
+$ cd bcmd
+$ ls
+206778 cpljbvm.vws
+86096 lfgjnzhw.rtm
+$ cd ..
+$ cd jcjsp
+$ ls
+188389 zbdp.gqb
+$ cd ..
+$ cd jnwr
+$ ls
+293633 jhh.wtj
+$ cd ..
+$ cd ..
+$ cd plj
+$ ls
+323119 qgs
+221100 ssssrhwz
+264549 zbdp.gqb
+$ cd ..
+$ cd tvmv
+$ ls
+198197 mpq.cdn
+$ cd ..
+$ cd ..
+$ cd twzq
+$ ls
+dir hwgndwpj
+$ cd hwgndwpj
+$ ls
+dir srdzqqf
+$ cd srdzqqf
+$ ls
+101738 slzdbm
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd mzsfcvgv
+$ ls
+dir hlvpfw
+dir vbdw
+$ cd hlvpfw
+$ ls
+270309 wncrt
+$ cd ..
+$ cd vbdw
+$ ls
+dir csw
+$ cd csw
+$ ls
+231750 dcjr.jgb
+297504 mpq.cdn
+215564 plm.rtl
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd qgj
+$ ls
+192181 hmqfdht
+dir lmp
+250495 mpq.cdn
+dir slzdbm
+253262 ssssrhwz
+dir tzth
+$ cd lmp
+$ ls
+dir jnwr
+$ cd jnwr
+$ ls
+284951 zcgrgff.slq
+$ cd ..
+$ cd ..
+$ cd slzdbm
+$ ls
+266715 hzbq.plc
+dir jnwr
+11379 mzsfcvgv.rbw
+dir slzdbm
+$ cd jnwr
+$ ls
+108636 mpq.cdn
+324035 zzvmlrj.rrl
+$ cd ..
+$ cd slzdbm
+$ ls
+68393 zbdp.gqb
+$ cd ..
+$ cd ..
+$ cd tzth
+$ ls
+12884 hlvpfw.gwl
+146470 jnwr
+$ cd ..
+$ cd ..
+$ cd wfjzls
+$ ls
+191088 hlvpfw.prw
+64712 mpq.cdn
+103828 pjhg.qmc
+dir qvmdt
+$ cd qvmdt
+$ ls
+244001 ssssrhwz
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd slzdbm
+$ ls
+dir hsvbbbp
+dir jdtrdgqs
+dir lrldsqcr
+194137 mzsfcvgv.hnv
+dir nzcbqzdz
+$ cd hsvbbbp
+$ ls
+104752 rcfpnh.vlr
+185473 slzdbm.dbr
+dir vpwf
+dir zhngz
+$ cd vpwf
+$ ls
+266988 frhvp.ltf
+82931 mpq.cdn
+$ cd ..
+$ cd zhngz
+$ ls
+181282 drtfhrhp
+$ cd ..
+$ cd ..
+$ cd jdtrdgqs
+$ ls
+37106 hdjl.rrr
+$ cd ..
+$ cd lrldsqcr
+$ ls
+dir brwcprn
+dir hlvpfw
+dir jnwr
+dir slzdbm
+dir wrmr
+dir zjrdgf
+dir zrpqf
+$ cd brwcprn
+$ ls
+dir bmjwts
+$ cd bmjwts
+$ ls
+157148 jwbd
+251396 qtgc
+$ cd ..
+$ cd ..
+$ cd hlvpfw
+$ ls
+121723 zbdp.gqb
+$ cd ..
+$ cd jnwr
+$ ls
+240747 gfrrtdh
+$ cd ..
+$ cd slzdbm
+$ ls
+176832 jnwr
+36125 ltwmzw.fdl
+132059 plqmwhr.hhv
+85540 slzdbm.wzm
+23459 zhbwh.cds
+$ cd ..
+$ cd wrmr
+$ ls
+90357 zbdp.gqb
+$ cd ..
+$ cd zjrdgf
+$ ls
+301679 qbmt.vhh
+12942 slfdb.bqt
+$ cd ..
+$ cd zrpqf
+$ ls
+241851 pnsdlbs.brw
+$ cd ..
+$ cd ..
+$ cd nzcbqzdz
+$ ls
+182963 qgg.zsc
+dir qwjgb
+301344 slfdb.bqt
+299029 zbdp.gqb
+$ cd qwjgb
+$ ls
+223978 rprrjp.hfd
+164106 wlq.rcq
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd zdhcp
+$ ls
+dir hbggp
+dir mzsfcvgv
+dir zdsvth
+$ cd hbggp
+$ ls
+302339 qcmfdhvm
+112806 rpb.vfl
+$ cd ..
+$ cd mzsfcvgv
+$ ls
+dir gpz
+dir slzdbm
+dir zvjv
+$ cd gpz
+$ ls
+290264 fdl
+158548 slfdb.bqt
+$ cd ..
+$ cd slzdbm
+$ ls
+dir hlvpfw
+dir mzsfcvgv
+dir zdcthssc
+$ cd hlvpfw
+$ ls
+49287 zbdp.gqb
+$ cd ..
+$ cd mzsfcvgv
+$ ls
+dir gnmtggs
+103244 jnwr.gtn
+263736 slfdb.bqt
+$ cd gnmtggs
+$ ls
+31665 qhthp.lfh
+$ cd ..
+$ cd ..
+$ cd zdcthssc
+$ ls
+64408 cgbnzc.cgn
+$ cd ..
+$ cd ..
+$ cd zvjv
+$ ls
+6088 gnpsb.dml
+145405 llp.cbm
+dir mgcg
+dir nwl
+dir rqznjmt
+128194 zbdp.gqb
+$ cd mgcg
+$ ls
+dir ngwvm
+dir slzdbm
+dir smd
+dir smr
+dir zcgrgff
+$ cd ngwvm
+$ ls
+49186 hmqfdht
+$ cd ..
+$ cd slzdbm
+$ ls
+44434 rdcb
+$ cd ..
+$ cd smd
+$ ls
+dir fjd
+dir rscdvnwt
+dir wbhp
+318166 zbdp.gqb
+$ cd fjd
+$ ls
+14084 hlvpfw.ghn
+$ cd ..
+$ cd rscdvnwt
+$ ls
+6432 fzwpmjm.ntl
+$ cd ..
+$ cd wbhp
+$ ls
+dir czv
+217474 dnq.cpq
+36009 jnwr.zdv
+32123 mpq.cdn
+27607 mrm.sgs
+107593 zbdp.gqb
+$ cd czv
+$ ls
+60750 zcgrgff.mnr
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd smr
+$ ls
+47204 zcgrgff.vsl
+$ cd ..
+$ cd zcgrgff
+$ ls
+317050 hjtfb
+110272 jrbcbvjw
+290867 ltfj.dvl
+dir mzsfcvgv
+130694 wnc.rnr
+206448 zbdp.gqb
+$ cd mzsfcvgv
+$ ls
+dir jnwr
+$ cd jnwr
+$ ls
+20405 bjpvssjt
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd nwl
+$ ls
+254439 dlv
+193910 hlvpfw
+13603 hnsdntn.trz
+2990 mpq.cdn
+$ cd ..
+$ cd rqznjmt
+$ ls
+250114 hlvpfw
+189732 mzsfcvgv.vqv
+144688 zcgrgff
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd zdsvth
+$ ls
+150609 jnwr.rtr
+173402 nftm.nwd
+dir njhjrgmf
+$ cd njhjrgmf
+$ ls
+295762 nchztlh.lcs
diff --git a/2022/day07/main.go b/2022/day07/main.go
new file mode 100644
index 0000000..7262d50
--- /dev/null
+++ b/2022/day07/main.go
@@ -0,0 +1,212 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"sort"
+	"strings"
+
+	h "git.bullercodeworks.com/brian/adventofcode/helpers"
+)
+
+func main() {
+	inp := h.StdinToStringSlice()
+	part1(inp)
+	fmt.Println("")
+	part2(inp)
+}
+
+func buildFileSystem(inp []string) *dir {
+	root := NewDir(nil, []string{}, "/")
+	cwd := root
+	for i := range inp {
+		if i == 0 {
+			// We've already done this
+			continue
+		}
+		pts := strings.Fields(inp[i])
+		switch pts[0] {
+		case "$":
+			if pts[1] == "cd" {
+				if pts[2] == ".." {
+					cwd = cwd.Parent()
+				} else {
+					ch, err := cwd.ChangeDir(pts[2])
+					if err != nil {
+						log.Fatalf("Failed to change directories: %s/%s, %s", strings.Join(cwd.Path(), "/"), pts[2], err.Error())
+					}
+					cwd = ch
+				}
+			}
+		case "dir":
+			cwd.AddDir(pts[1])
+		default:
+			cwd.AddFile(pts[1], h.Atoi(pts[0]))
+		}
+	}
+	return root
+}
+
+func part1(inp []string) {
+	fmt.Println("# Part 1")
+	root := buildFileSystem(inp)
+	smallDirs := root.FindDirectoriesMaxSize(100000)
+	var sum int
+	for i := range smallDirs {
+		sum += smallDirs[i].Size()
+	}
+	fmt.Printf("Naive Size of Small Dirs: %d\n", sum)
+}
+
+func part2(inp []string) {
+	fmt.Println("# Part 2")
+	root := buildFileSystem(inp)
+	total := 70000000
+	required := 30000000
+	used := root.Size()
+	needed := required - (total - used)
+	dir := root.FindSmallestDirectoryAtLeast(needed)
+	if dir == nil {
+		log.Fatal("No suitable directories found")
+	}
+	fmt.Printf("Disk Space %d / %d. Need %d more for update.\n", (total - used), total, needed)
+	fmt.Println("Auto-deleting smallest directory that will permit update... Don't panic.")
+	fmt.Printf("Freed space by deleting %s: %d\n", dir.FullPath(), dir.Size())
+}
+
+const (
+	TpFile = iota
+	TpDir
+)
+
+type node interface {
+	Parent() *dir
+	Path() []string
+	Name() string
+	Type() int
+	Size() int
+	FullPath() []string
+	Print(depth int)
+}
+
+type file struct {
+	parent *dir
+	path   []string
+	name   string
+	size   int
+}
+
+func NewFile(parent *dir, path []string, nm string, size int) *file {
+	return &file{
+		parent: parent,
+		path:   path,
+		name:   nm,
+		size:   size,
+	}
+}
+func (f file) Parent() *dir       { return f.parent }
+func (f file) Path() []string     { return f.path }
+func (f file) Name() string       { return f.name }
+func (f file) Type() int          { return TpFile }
+func (f file) Size() int          { return f.size }
+func (f file) FullPath() []string { return append(f.path, f.name) }
+func (f file) Print(depth int) {
+	fmt.Printf("%s- %s (file, size=%d)\n", strings.Repeat("  ", depth), f.Name(), f.Size())
+}
+
+type dir struct {
+	parent       *dir
+	path         []string
+	name         string
+	contents     map[string]node
+	contentsList []string
+}
+
+func NewDir(parent *dir, path []string, name string) *dir {
+	return &dir{
+		parent:   parent,
+		path:     path,
+		name:     name,
+		contents: make(map[string]node),
+	}
+}
+func (d dir) Parent() *dir   { return d.parent }
+func (d dir) Path() []string { return d.path }
+func (d dir) Name() string   { return d.name }
+func (d dir) Type() int      { return TpDir }
+func (d dir) Size() int {
+	var size int
+	for i := range d.contents {
+		size += d.contents[i].Size()
+	}
+	return size
+}
+func (d dir) FullPath() []string { return append(d.path, d.name) }
+func (d *dir) ChangeDir(to string) (*dir, error) {
+	if v, ok := d.contents[to]; !ok {
+		return nil, errors.New("Directory not found")
+	} else {
+		switch d := v.(type) {
+		case *dir:
+			return d, nil
+		default:
+			return nil, errors.New("Not a directory")
+		}
+	}
+}
+func (d *dir) AddFile(nm string, size int) {
+	d.contents[nm] = NewFile(d, d.FullPath(), nm, size)
+	d.contentsList = append(d.contentsList, nm)
+	sort.Strings(d.contentsList)
+}
+func (d *dir) AddDir(nm string) {
+	d.contents[nm] = NewDir(d, d.FullPath(), nm)
+	d.contentsList = append(d.contentsList, nm)
+	sort.Strings(d.contentsList)
+}
+func (d dir) Print(depth int) {
+	fmt.Printf("%s- %s (dir)\n", strings.Repeat("  ", depth), d.Name())
+	for _, nm := range d.contentsList {
+		n, ok := d.contents[nm]
+		if !ok {
+			log.Fatalf("Error printing directory %s: %s not found.", d.FullPath(), nm)
+		}
+		n.Print(depth + 1)
+	}
+}
+func (d *dir) FreeSpace(driveSize int) int { return driveSize - d.Size() }
+
+func (d *dir) FindDirectoriesMaxSize(size int) []*dir {
+	var ret []*dir
+	for _, node := range d.contents {
+		switch child := node.(type) {
+		case *dir:
+			if child.Size() <= size {
+				ret = append(ret, child)
+			}
+			ret = append(ret, child.FindDirectoriesMaxSize(size)...)
+		}
+	}
+	return ret
+}
+func (d *dir) FindSmallestDirectoryAtLeast(needed int) *dir {
+	var ret *dir
+	retSize := d.Size()
+	for _, node := range d.contents {
+		switch child := node.(type) {
+		case *dir:
+			sz := child.Size()
+			if sz >= needed && sz < retSize {
+				ret = child
+				retSize = sz
+				rec := child.FindSmallestDirectoryAtLeast(needed)
+				if rec != nil {
+					ret = rec
+					retSize = rec.Size()
+				}
+			}
+		}
+	}
+	return ret
+}
diff --git a/2022/day07/problem b/2022/day07/problem
new file mode 100644
index 0000000..cb4a255
--- /dev/null
+++ b/2022/day07/problem
@@ -0,0 +1,151 @@
+Advent of Code
+br0xen (AoC++) 14*
+
+--- Day 7: No Space Left On Device ---
+
+   You can hear birds chirping and raindrops hitting leaves as the expedition proceeds. Occasionally, you can even hear
+   much louder sounds in the distance; how big do the animals get out here, anyway?
+
+   The device the Elves gave you has problems with more than just its communication system. You try to run a system update:
+
+ $ system-update --please --pretty-please-with-sugar-on-top
+ Error: No space left on device
+
+   Perhaps you can delete some files to make space for the update?
+
+   You browse around the filesystem to assess the situation and save the resulting terminal output (your puzzle input). For
+   example:
+
+ $ cd /
+ $ ls
+ dir a
+ 14848514 b.txt
+ 8504156 c.dat
+ dir d
+ $ cd a
+ $ ls
+ dir e
+ 29116 f
+ 2557 g
+ 62596 h.lst
+ $ cd e
+ $ ls
+ 584 i
+ $ cd ..
+ $ cd ..
+ $ cd d
+ $ ls
+ 4060174 j
+ 8033020 d.log
+ 5626152 d.ext
+ 7214296 k
+
+   The filesystem consists of a tree of files (plain data) and directories (which can contain other directories or files).
+   The outermost directory is called /. You can navigate around the filesystem, moving into or out of directories and
+   listing the contents of the directory you're currently in.
+
+   Within the terminal output, lines that begin with $ are commands you executed, very much like some modern computers:
+
+     • cd means change directory. This changes which directory is the current directory, but the specific result depends on
+       the argument:
+
+          • cd x moves in one level: it looks in the current directory for the directory named x and makes it the current
+            directory.
+          • cd .. moves out one level: it finds the directory that contains the current directory, then makes that
+            directory the current directory.
+          • cd / switches the current directory to the outermost directory, /.
+
+     • ls means list. It prints out all of the files and directories immediately contained by the current directory:
+
+          • 123 abc means that the current directory contains a file named abc with size 123.
+          • dir xyz means that the current directory contains a directory named xyz.
+
+   Given the commands and output in the example above, you can determine that the filesystem looks visually like this:
+
+ - / (dir)
+   - a (dir)
+     - e (dir)
+       - i (file, size=584)
+     - f (file, size=29116)
+     - g (file, size=2557)
+     - h.lst (file, size=62596)
+   - b.txt (file, size=14848514)
+   - c.dat (file, size=8504156)
+   - d (dir)
+     - j (file, size=4060174)
+     - d.log (file, size=8033020)
+     - d.ext (file, size=5626152)
+     - k (file, size=7214296)
+
+   Here, there are four directories: / (the outermost directory), a and d (which are in /), and e (which is in a). These
+   directories also contain files of various sizes.
+
+   Since the disk is full, your first step should probably be to find directories that are good candidates for deletion. To
+   do this, you need to determine the total size of each directory. The total size of a directory is the sum of the sizes
+   of the files it contains, directly or indirectly. (Directories themselves do not count as having any intrinsic size.)
+
+   The total sizes of the directories above can be found as follows:
+
+     • The total size of directory e is 584 because it contains a single file i of size 584 and no other directories.
+     • The directory a has total size 94853 because it contains files f (size 29116), g (size 2557), and h.lst (size
+       62596), plus file i indirectly (a contains e which contains i).
+     • Directory d has total size 24933642.
+     • As the outermost directory, / contains every file. Its total size is 48381165, the sum of the size of every file.
+
+   To begin, find all of the directories with a total size of at most 100000, then calculate the sum of their total sizes.
+   In the example above, these directories are a and e; the sum of their total sizes is 95437 (94853 + 584). (As in this
+   example, this process can count files more than once!)
+
+   Find all of the directories with a total size of at most 100000. What is the sum of the total sizes of those
+   directories?
+
+   Your puzzle answer was 1642503.
+
+--- Part Two ---
+
+   Now, you're ready to choose a directory to delete.
+
+   The total disk space available to the filesystem is 70000000. To run the update, you need unused space of at least
+   30000000. You need to find a directory you can delete that will free up enough space to run the update.
+
+   In the example above, the total size of the outermost directory (and thus the total amount of used space) is 48381165;
+   this means that the size of the unused space must currently be 21618835, which isn't quite the 30000000 required by the
+   update. Therefore, the update still requires a directory with total size of at least 8381165 to be deleted before it can
+   run.
+
+   To achieve this, you have the following options:
+
+     • Delete directory e, which would increase unused space by 584.
+     • Delete directory a, which would increase unused space by 94853.
+     • Delete directory d, which would increase unused space by 24933642.
+     • Delete directory /, which would increase unused space by 48381165.
+
+   Directories e and a are both too small; deleting them would not free up enough space. However, directories d and / are
+   both big enough! Between these, choose the smallest: d, increasing unused space by 24933642.
+
+   Find the smallest directory that, if deleted, would free up enough space on the filesystem to run the update. What is
+   the total size of that directory?
+
+   Your puzzle answer was 6999588.
+
+   Both parts of this puzzle are complete! They provide two gold stars: **
+
+References
+
+   Visible links
+   . https://adventofcode.com/
+   . https://adventofcode.com/2022/about
+   . https://adventofcode.com/2022/events
+   . https://adventofcode.com/2022/settings
+   . https://adventofcode.com/2022/auth/logout
+   . Advent of Code Supporter
+	https://adventofcode.com/2022/support
+   . https://adventofcode.com/2022
+   . https://adventofcode.com/2022
+   . https://adventofcode.com/2022/support
+   . https://adventofcode.com/2022/sponsors
+   . https://adventofcode.com/2022/leaderboard
+   . https://adventofcode.com/2022/stats
+   . https://adventofcode.com/2022/sponsors
+   . https://adventofcode.com/2022
+   . https://adventofcode.com/2022/day/7/input
diff --git a/2022/day07/testinput b/2022/day07/testinput
new file mode 100644
index 0000000..09a921e
--- /dev/null
+++ b/2022/day07/testinput
@@ -0,0 +1,23 @@
+$ cd /
+$ ls
+dir a
+14848514 b.txt
+8504156 c.dat
+dir d
+$ cd a
+$ ls
+dir e
+29116 f
+2557 g
+62596 h.lst
+$ cd e
+$ ls
+584 i
+$ cd ..
+$ cd ..
+$ cd d
+$ ls
+4060174 j
+8033020 d.log
+5626152 d.ext
+7214296 k