day 03
This commit is contained in:
Moritz Hölting
parent
2132ceceb6
commit
48a4498492
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@ -16,6 +16,13 @@ dependencies = [
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"nom",
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]
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[[package]]
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name = "day-03"
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version = "0.0.0"
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dependencies = [
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"nom",
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]
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[[package]]
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name = "memchr"
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version = "2.6.4"
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@ -2,7 +2,8 @@
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resolver = "2"
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members = [
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"day-01",
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"day-02"
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"day-02",
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"day-03"
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]
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[workspace.dependencies]
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@ -0,0 +1,9 @@
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[package]
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name = "day-03"
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version = "0.0.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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nom.workspace = true
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File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,140 @@
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..224.....487...................718.....................378............................................284........310......313..........311.
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....*..............................*744....486*485......*......741......@...359.#666...439................*925....*......$..+........@......
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.235................758..440...........................251....*......262.....*..........*......................752......774.......515.......
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.........705%..@746........+..942*591.347.470...#..257.........637...........793.......299..../.....813....509......464......&.........688..
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.....82................................*.../..901.....*..................836.....&............814...*........*..............80...17*....*...
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.../...*...679.661.....299...........222.............875.....213...161............964...894.........998.....310....258.85...........735.586.
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.650..23..#......*.......................................760*........@./........................202...................*.....339.............
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..............598......#.....536....702*.........705..........793......957............./........*...935...........965.......................
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..................*.357...+.....@.......242.......*......283..*...=956.......118.......959...184...*..............*....401*527.....348...161
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.63=...955.523..77......978.846....849..........699..........790........=911.*.....87...............486.........914..............=..........
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.........*.........842......*.......*..................*127....................844...*....946.......................235...209@...710.735....
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...........@.........*.....144....226....298........560.....253.........431......*...586.......723..../...482.......&...................*...
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...........871../918........................+....................329*......%.....906.............*...350.....@...............365.......361..
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......................536............................+..793..........664.....739................507......289.....256%...73..*...............
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.356..834..............*.........96.939..............28.+....=..............*...........................*................$.553..........526.
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...*...*.............501..746....*..-.......=.................890.....+...701..............807........447......97$..%...........58......$...
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.891....346...699...........*.421......+....666......198*791......340.433............#...%...*.......................316........*.....%.....
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..............%........81.984...........462....................../..........116...711....963...$................380.......745...85....224...
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.........370......923..@.....................563...........188+.........326*...................67.815..............*582.....................
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.........*........-........#530.........489........59...................................................#.....57.........100.*.......441*161
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.637*....961...........118...........21*...........@..216+.........................+....432*.*309..64....992.......81......=.781.644........
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.....324.........126......*166...............&...................385*..............233............*................*..436...........*517....
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.88*.........390*................355..335...372....+254..............294...$589........&..803/.....38..-...........56..$....................
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....235.-.........+196...948....*........-................359.........................398.............608..../.................145..346.....
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........915.................-.485.945.................936*................114.............118...............490.536..............*.%........
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.663........61.......856..........+....343....859...............*345.......*...=862............711.............................313.....606..
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........23...$.....@..................*......................316.....529.362.............49......................307*791....................
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225...............281...#..222.....@..283..............675............*.........911*90..-.....914..%39....509...............................
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.......797*....$........23..../...895.............67.......164.896.....554.....................*............=..............460........181...
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...........211.474...............................@...........*....*201..........911.717.#....192.75..679...........$.........*.........=....
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....355.........................&.....................678.650......................*.....128.....*.....*.........925..230...105.............
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....*.......409#.......*897.....698....427.........+....*.......*...............................313...670..521.......*....&.............*308
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...838..335.................367........-..........325....233...224...950......688.....199.774.........................793.108........501....
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...........*..102..924.349...+..595....................................*................&..............395+.....................753.........
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.........318...*......*........*....676...759.154...................524...........908.........694.211................173...........*214..424
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....458........403...........958.98....*........*..............688......957...488..+...........*.../....................................*...
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.......*.............591...............218.....203.....196$.......+....*........*......................765......971......./....927*741..227.
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......592..%60.$.....*.....885/....287...............................474.........409......226.174.......@........*.....230..................
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...............162.169.................510..962..............17......................32@..*...*.................225....................-....
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.....880...................201.....823*........*...914.724.........89...&.......267=.....717.54.436..........60...............&.........69..
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710........601....306.287.....+.........65...308....&...=.../......*.....926..................................*........278.415......-.......
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..............*..*......&..........241.%...................827../.265.............662.678......@...#......@.....$......-............734.144.
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.............424..434.....701.....*........380*731.............24.................*...&........973..741....728..357.........................
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........304.................*...881................238.....740.........947........587...22...........................271*........603....@...
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...................266.....918....................*..........+.519.617..*...826..........*............./268..974.........486.376....*.295...
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...939.........363.*...............378..........302....586........*....740...=..........380........931...........................12.........
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...*..........-.....387...............*..588..............*..../...............315...................-...712..491.........956.....#.........
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.180.454...................104..661...91...*.............811....370......471...-....419....804..........*...................*...............
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.....*.......@../464........%..*............243.....578...................&..........*...........604..250.....784....750....998.............
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.....245....165.................771...................&.......#.691...768....654....261.........................*.......*............566....
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441..................91.....194.......643...932*............379.#....$.......*.................86.............940..263.638...........*......
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...+.............%.../.......#.........*........344...795..................991..........544....*..................*..........767...266......
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.......-..708..727.....191$......*.....698....=...................990................+.....*....308.......@......325.........*.........44...
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...18.397....=.....93.........649.900.........62....-........322.....*.......@......339....619..........404..........540........./....*.....
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..../...............%............................742............*...........196................874.205........96#..............203.224......
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.........704...727.................496.......*........135....769........./.................%....&....*.../..=.........757...................
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........*........*..424..........&........714.5........*...........@....884...............114.......674.144..83..........*302...........%...
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........29....179..*............104..................531....629.455..................473......300....................254..............640...
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..................296.......................................................1........*.......%..............548........*.....103............
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....381...........................365#..713.282.......%744....................../....709...#...=...431...$.*......*.....837.....*9.....*....
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......*.90.....347.179#...................%.......359..........92............304...*.....923.446.......385.699.....749..............193.206.
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....922.+.......*.......-197.....................*.......128........273....@.....758..............439...................650*54.736#.........
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................817..-..........152..594..949..807.......$...224...*.....124............889.......=...................................625...
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....139....667......239........*...........*.......387........%..806........../...........*..788....632...........=8......584-......*.%.....
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...........*.................280...........11.........*726............181......761..-....66.....%....-................64...........14.......
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............742.736.725..........708.667..........332.......828*750......-.........425.......................944.....*...................926
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.719...110...........*.....348...=..........121......*........................................*.......961.....*.......971...........+.......
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..../.....*629........830..*............91....&..241..491...930............561................889....*....710.333..............163...311....
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......%...................252.../..................*...........*270.......................165.....208.......*..................../.......694
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...914...126...267.183........952..$645......414.822................................69.......-..........=..112.464..267....359..........*...
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.............7*..........................806.../.....931.....*.....355..............*....928...........854.........-..............*993...101
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439.897...........%...........8......381...*........*....748..987....*............437.......*....954.......................*................
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.......*595....783........49.....110.$...675...8...60.....=........981........&..........730....*.............336.......120.790..........386
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............90..............*212...*..........*.......985.....153........*..12...912*383......665.....754.....-.....................950.....
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......790#.*........896@.........773....777..581..514*....910.....5.....579.............................=.......#.....................*.....
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...&.......496...........347..............*...............*...................../............................790..............334......912..
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692............609....&.......694..........693...213....620......695......871..385.......82..........785.......................*..163.......
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.........#....*......984.........*.................=............*.......................................*.545...-............978.....*......
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......971...477.............465......196*313..........447.......766......49.......126*480.............798......792..359*193...........837...
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................157...........+..................773.=..............752$....................447*565..........................*53............
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.384%..........@.........449............470..749...@.........@792..............138..527.......................339.....299.505...........287.
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......691........700........@......96..........*........721*.....................@....*...942......845........*......-.........713..........
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.....*......260/...*...........................491..452.....336.......................73....+..960..........238...........163$..&...=.@.....
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....689.............831...282....709.960.............=.............204............................#..............59...97..........199..111..
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........................$........../........-....498......................557....&...........972............450.............................
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.............653........476...398.........619...*.....*280..923..............*31..691.........*........=...*.....67......782................
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..............*....%..........*.........+......268...........&........428....................408....740....576....*.......*.........$.......
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....-../...734......317.114.332...795...743.........................-..=..908...........381.......................914...420.*647....528.....
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..284.825...............*......................721/.=929.........324.....*....167.561...*.....815*466.......................................
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..............389..304.480.......851..@....585..............942%......#.496....*....-.53................170....938*..........518............
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........368..*.....@..............*....941..+.......*...............930.........364.......522......................59.........+....$....652.
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...........+.963...................949...........828.784......860............*......420.....*..................*......548...........310.*...
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.....476...............*...............=...94.+..................&........589.833....*..426.940.....&.....959.993.&88....................398
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.......*................624....917...838..*...664.......721........................833...$.......672......$............19...................
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....350.......................&....=..............333.................707....................................240..336....=...746.263..$463..
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.........................-.........220.....663...../.............*849..#..631.....712....=.../...308.580.............*..........*...........
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.78@......../..........422....444.............*...............281............*...*....447..37.......*................814....................
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........./...788...810.........&..............369..985....-................92................................684...............74...........
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......279.........*......128/....464........#...../......944........978...............163..984*5.@............+.......165......*....285.....
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..................889.............*.......969........................%.......5......&....$........272....................*......374.........
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.........&..............@948..*..13.358........796.............632............*....789........91*..............*66........152...............
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........508...+..............3...........544.....$.517.....703....*774.......434............/....794........932.............................
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...../.............263.312....+..767..............#.........................*...&95..838.162=.....+....130.........583..544.......176.......
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............................936......826.......421.......-139.......982...893.......................*..................*........./..........
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.284.....=724...................661.$....694........85..........438.............51...............616.698.*36.....262......357+........224...
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....@..........491........+........................@......193......*596...........%../844...387.................$.....132.........%.........
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.......84..............362.................................*..98..........&................*....14....394..........$..............56........
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..............723*.........568........*..108........672......55.172...217.........................289.427........................*..........
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.........#795.........214....*.336...94....*....988................%..&.............*86......*...............838&.......540.......902.......
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...407................886...................................84......................933...101....58........839..425.........................
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@ -0,0 +1,62 @@
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use nom::{branch::alt, bytes::complete::is_not, character::complete::digit1, multi::many1};
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use std::collections::HashSet;
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fn main() {
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println!("{}", part1(include_str!("./input.txt")));
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}
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fn part1(input: &str) -> u32 {
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let mut symbols = HashSet::new();
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input
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.lines()
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.enumerate()
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.flat_map(|l| l.1.chars().enumerate().map(move |c| (l.0, c.0, c.1)))
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.filter(|(_, _, c)| !c.is_ascii_digit() && *c != '.')
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.for_each(|(y, x, _)| {
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symbols.insert((x, y));
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});
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input
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.lines()
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.enumerate()
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.map(|(y, l)| line(l, y, &symbols))
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.sum()
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}
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fn line(i: &str, y: usize, symbols: &HashSet<(usize, usize)>) -> u32 {
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many1(alt((
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is_not("0123456789"),
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digit1::<&str, nom::error::Error<&str>>,
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)))(i)
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.unwrap()
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.1
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.into_iter()
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.fold((0, 0), |(pos, sum), cur| {
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if let Ok(num) = cur.parse::<u32>() {
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let y_minus_1 = y.checked_sub(1).unwrap_or(y + 1);
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let pos_minus_1 = usize::checked_sub(pos, 1).unwrap_or(pos);
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let symbol_y = (pos_minus_1..=pos + cur.len())
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.any(|x| symbols.contains(&(x, y + 1)) || symbols.contains(&(x, y_minus_1)));
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let symbol_x =
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symbols.contains(&(pos_minus_1, y)) || symbols.contains(&(pos + cur.len(), y));
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let value = if symbol_y || symbol_x { num } else { 0 };
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(pos + cur.len(), sum + value)
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} else {
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(pos + cur.len(), sum)
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}
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})
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.1
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_part1() {
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assert_eq!(part1("467..114..\n...*......\n..35..633.\n......#...\n617*......\n.....+.58.\n..592.....\n......755.\n...$.*....\n.664.598.."), 4361);
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}
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}
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@ -0,0 +1,80 @@
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use nom::{branch::alt, bytes::complete::is_not, character::complete::digit1, multi::many1};
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use std::{collections::HashMap, sync::Mutex};
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fn main() {
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println!("{}", part2(include_str!("./input.txt")));
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}
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fn part2(input: &str) -> u32 {
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let mut gears = HashMap::new();
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input
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.lines()
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.enumerate()
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.flat_map(|l| l.1.chars().enumerate().map(move |c| (l.0, c.0, c.1)))
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.filter(|(_, _, c)| *c == '*')
|
||||
.for_each(|(y, x, _)| {
|
||||
gears.insert((x, y), Mutex::new(Vec::new()));
|
||||
});
|
||||
|
||||
input
|
||||
.lines()
|
||||
.enumerate()
|
||||
.for_each(|(y, l)| line(l, y, &gears));
|
||||
|
||||
gears
|
||||
.values()
|
||||
.map(|nums_mutex| {
|
||||
let mut nums = nums_mutex.lock().unwrap();
|
||||
nums.sort();
|
||||
nums.dedup();
|
||||
if nums.len() == 2 {
|
||||
nums[0] * nums[1]
|
||||
} else {
|
||||
0
|
||||
}
|
||||
})
|
||||
.sum()
|
||||
}
|
||||
|
||||
fn line(i: &str, y: usize, gears: &HashMap<(usize, usize), Mutex<Vec<u32>>>) {
|
||||
many1(alt((
|
||||
is_not("0123456789"),
|
||||
digit1::<&str, nom::error::Error<&str>>,
|
||||
)))(i)
|
||||
.unwrap()
|
||||
.1
|
||||
.into_iter()
|
||||
.fold(0, |pos, cur| {
|
||||
if let Ok(num) = cur.parse::<u32>() {
|
||||
let y_minus_1 = y.checked_sub(1).unwrap_or(y + 1);
|
||||
let pos_minus_1 = usize::checked_sub(pos, 1).unwrap_or(pos);
|
||||
|
||||
(pos_minus_1..=pos + cur.len()).for_each(|x| {
|
||||
if let Some(v) = gears.get(&(x, y + 1)) {
|
||||
v.lock().unwrap().push(num)
|
||||
}
|
||||
if let Some(v) = gears.get(&(x, y_minus_1)) {
|
||||
v.lock().unwrap().push(num)
|
||||
}
|
||||
});
|
||||
|
||||
if let Some(v) = gears.get(&(pos_minus_1, y)) {
|
||||
v.lock().unwrap().push(num)
|
||||
}
|
||||
if let Some(v) = gears.get(&(pos + cur.len(), y)) {
|
||||
v.lock().unwrap().push(num)
|
||||
}
|
||||
}
|
||||
pos + cur.len()
|
||||
});
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn test_part2() {
|
||||
assert_eq!(part2("467..114..\n...*......\n..35..633.\n......#...\n617*......\n.....+.58.\n..592.....\n......755.\n...$.*....\n.664.598.."), 467835);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue