Day 3 initial solution
This commit is contained in:
parent
16888bf459
commit
9437441dc7
GPG Key ID:
7B5F6AFBEC7EE78E
@ -9,3 +9,4 @@ edition = "2021"
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aoc-runner = "0.3.0"
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aoc-runner-derive = "0.3.0"
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nom = "7.1.3"
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simple-grid = "2.2.1"
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140
input/2023/day3.txt
Normal file
140
input/2023/day3.txt
Normal file
@ -0,0 +1,140 @@
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...................305.124................................432..............................................576..313.....514.................
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.............113...-......&....................&...819...........654..../..........................&901................*....869.257.........
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...377..&783../.................................9...........855*......940..463................-.........................844.*....@......679.
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......*...........197.261.....817..336.759............&742......548.......&........748......844.............#.......&........254...169..*...
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.......36....368.*...............*....*.........*..88......%866.......135.........*..................515.682.....114...%...........*.....768
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...233......*....909..698.........427..........127.*...................*...........450.........482..../.................312.....621.........
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.../.......882...............776...................555......180.........971....217.......857.../........212....674.917......736.....441*760.
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............................*.....@....907....%940.....%.......+.#..........45*...........$............#..........*...............=.........
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..................370.225.425..211...................932..........381..267.............45.....=....549....238........367..&.....488.........
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.468.............*.......................761...677.......&.................929..907.....%....79...*.......*....324..*....515................
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....-.#103.504...388...........$..........*.....@........766.%................*....*623.........532..881...573....*..840..............497...
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...........*.........305....412..687.......971................676....@640....657........709......................807............98.....+....
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....279...502...62...*.............*..............................................838%.....$.........585..........................*.........
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....=...=......*....209.825.482.993..........972............620*664..-759............................*.......184.........952....160.....156.
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.......814.....931......*...*............551..*....711...65.................224*115...851.772..104..505.....=........796*...................
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....................723.103..275........*......564..*.........830........................*...../..............................232...........
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.............$......&....................951........703......=............160+.....138......*........257*809.............$298........284....
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.....684....464.333..................827.....*211..................................#.....855.86.....................$913............*.......
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.......*...........*..*......917.163....*.409......294.......................#..39.......................511....358.......$671.......237....
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.......663.......311..163....*...%...158........*....-.442.........958....108.....#.....941*837.........*..........*........................
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............865=..........409....................128...*.......283....................................680.........730.935@........768.......
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....../................=.............54.....857.........418.....*..911.......610..643............381...............................@........
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.......925............984...........-...800*.................194.../.........*.......*.........../.....................................@....
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.................................@...............................&......615...16....695.....-..........................*750.............855.
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....611..136...................108.540.........362..711......*....420.....................190.......................213.............86......
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204*....@.........288..825..+........&...........*....*......733.........................................7..387.......................*.....
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...........795..../.......+.505.834.....228....192...619..........886......467.....942.............................%838.........512...340...
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.......957.........................*...*..................962........................*..............211...$..............624................
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.......*....................349....144......./786..350.......*.......................541..21.......$.....284..190*......*............518....
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....484...@....17..........*..../........309..........*....530...118..........208..............253................489.828...........*.......
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..........309...........715.....531........+.516#...645.........$........369....*.......*185...@............=.#...........@............&....
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491*192..............................................................233.........711.948.........572.....869..289......932...........149....
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........274.....511.....425..........421.288*965...652=.919........./....*.786...........676.....*..................+.........=.............
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.........*.........@......$...*.........................*........*....791...+..113......*....527..897..499+.904...166........580.........389
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.......306.....................353.497..929/.......=....553......495.................884.....&........................794........774........
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...................../...........................582....................................................489..........*...............&......
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.605......537.....247.....................479................74................227*995.761.....@...........+.......958...87.....547.795.....
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...*.....*....................289+.....*.....%........967..............*...............*........611.....28....367.................*.........
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..690....916.497....................894.440......547$.............596.492......23...............................*...............237.221..786
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.........................681.....=..........580+.................+...............+.......696............@..542..56..........................
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...936..639*947.............+...48.*709..................307.257...-248.697.553.............+.........146.....#.......*241..................
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...*................568....................=378....41.......*............*...%..11......*..........................982.............#........
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..323..704.+724..*....*..195*....812..879...........*.....*....508@.....852....$.....664.......317....*......332..............326.158.......
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.......*........610..767.....936...#...&..744.290..839.382.543....................................&.827...../.............323*.........884..
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...........962...............................*...................46....502.265.150...................................639...............*....
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955*818.......*...@...124*512..256...................+....&..............*....*.......170....996...#........................786.......4.....
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..............284.697...........*......172...........398.435.......-.....380..........+..........698....428...361................206........
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.822...#..............936$...745..........*..%59..................726...........+.........249......../...*.....*..................%.........
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.....870................................978.......761=.......179.............692.........*..........477..550.....676..281.............507...
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..............913.................215.........................*..745...#.............882..130..569....................&..........*472..*....
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...27..710.....*.....................*.205*403..............59....+..172................=.............................................697...
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....*....*....731.......865.......155..........849*....#..............................................679...854....................&........
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.985..%.............599....#..........191..520.......473..#........./...........708....406..677+...=............................599.....133.
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......501...........*........@.........*...*..............446....767...*444........@......&.........49......#...311*413.....................
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..................157.......830..13.90.398.945.978............................950.................%.......88................$...............
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.............297........618.......+.*............%............317.............../.........709..481............503.........570...305*845.....
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......661....*....632.....@..+......524......../.....+...........*...590..............944....*...............*................+..........681
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.......*.....820...@..........829...........671.......206.......239.+......................339..#............106......415..213..........-...
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........114........................903.669=............................764...319....373........642...................................-......
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.................*...........................*.......121.......898&.....$......*...*.....................................211#.......579.....
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........*.......362......787.440..........842.825.....*......................590...357..........949......523....470..292....................
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.....594.459........98.....*....*.......................355&..*..................*..........554..*.......*.......*....*..222...243..........
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.........................535.....674.........804....#..........455.............847............=.32...23..951.....217.346....+.*....+272.....
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..183...........443..........119.......833....#..693......818#........................@..699..............................*....678..........
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...*......455/...%..826.............#.....*.........................$...........868.739....=..753...181....773.........323.508..............
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...382................*...169..510..590.295....212.767....*970......711.........*........#.......*..*............651...........36..766*.....
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............&..61..697.....*................46.*....*..691......970............786....953.....775...235..................*550....*.....417..
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..........45.....*........689...645.....549*...821.601.............*......................952..............#..........464.....609...........
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.....657.........48...888.......*...................................305......+47..........................254.27......................123...
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818......388............*....412....../491.........#336...506..422.................989....15...70..............*..354............@.....*....
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..............506........11......./...........643..........#..=..........703...963*........@.........613.....413....%...485.......265...33..
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....589.......*................207..............%...............................................+................*......*.....94............
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...*.........663...413+....................................819...........655.%...648..823.......770....385......457..150...#.../............
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515.......................475....825......33../350.....459...%..........*....681...*...*..............%..................437.......689......
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....$993..897@..............*.......*837...-...........*..............726........372....922......&198................................*......
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180............*..........679.................71.629=.796......109...........................527..................682.....558.....798.......
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........437.742.46.................@.......&...................*......498.......@.............*............./......$........*...............
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..761..$...........148.......856....701.377..536*510...604...540.....&........929........172.799.............310.....700...........440.%....
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.....*........808*....=.........@......................*.........577.....................*................&...........$...417.39.....&.229..
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........794.......446..............................214.543...%...*..........935......865..445...../....%.615................=..*............
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..572..+...............................419....932@.........924..72.902.......-..579.-...........997.203................873......945..567....
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.....*.................273.............*...........................*...142............688................755.850...........846.........=....
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...880................*..............883.698.....$.......=........197.*...........316*.........365.........$...*............*............904
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.........385..977..179....+...................652......875.............350...863............73......464.........214.852..478................
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......22....*..@.........93............*682..................*137..309.........*....557.....*........................=.......698.....+.218..
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......*...645......163...............89......*853..................*...386..341.......*...228............718*492...............*..153..*....
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.....576......................857.........513....................509......*.....322.710.........615.......................613.165.......292.
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................................@.....370.......598......487...........503..*.....................*...738#..#..$901...$.....#.......648.....
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..19*454.............78................/..876..#..........*......+..........937.......383........523........69......326.678.....212....*....
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.....................*.....436.@...646...*..........100....367..325.....361.......207*....50............621...............*..........237....
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757.........714......502...%...54......909.411.....*.....................*..........................=..$................415.................
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...$.......&.................................*...471..985...508.472....891.842..$.................418.........&.....&.......................
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.................$........906..........*215.338...............*..............*..606.#235......................813..259........229...........
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........472...222.........*.....245.572.......................927...769....344.............291.239.....................94....*..............
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...818...$.............291..............288...........163.734......+...........699............*.......981&...514*.............224.....=.....
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.....*..................................*.........................................+..189..........452............644...................669..
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....850................326$..............869..&985......784..../..............592.......*..153.....*....887..493.....211........%...........
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.............................457....834.....................94..564..........&.........498....*...304....../...*.....*..........845.....&...
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.......12*48.753...244..196....=......$..721....90*29.........*.................+.522.......487...............317.....531..311........20....
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.177...............*.....*.................*.............*969.611.......*565..338...*.............712..922$.......770......*....522.........
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....*..459......149......165...=........879...........103............497..........258.931..75....*..........400*.....*......972.............
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.269...*............#........715.............................*475..........................*....145.............414.....228........893......
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........209......508...................../331......469....894............347.890$..541.....56...............#........#..*...................
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......................=...........37................*...........................................$...........197...119.....=...........756...
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...........&.......850.....367.34...*............517........178*716..........=...................892......-............883...755............
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.....@496.125.................*......965.....428.....908..................405.....650...................=..493..89..........................
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..............581........396.............596.........*....964........672......159.%....463............768......./.............391...........
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.............*...........*.....871.660..*......577.73......@.....932....#....*............*574...186........154......996........*......720..
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............914..132..137......=.......746......*..................*......376.......&661............*560.%.......%....*...264....511........
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...%...151................*851...................................*..284.........754..........190.19.......611...326.841...............89....
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644.....*...797........133.....476..............................810.............*.....866......+.*..............................#903..*.....
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........839..*..478...........*........372.#.....744.....227*............477.3.253.%....&..746.....289.&860.....720*708.....................
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............443...%.....68*....283.......%..900...%....%..........584......*.$......308....*......*......................592................
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...239................@....250........50........&...%...192.$111.*........74............831....914...#.....886*492..........=...............
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492..........*.....$.............302...789.................861.......................290.......452........83....626....*.....76.......*.....
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......178...528..........*739...@..........................*......804....320....#.........&878.*.....746........./..&...148...$......741....
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...&....*.............262..............325...........599..592.579.....%...+..808...............386..*...............761.....................
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663..462...........*..........109..706*.................=.............553........712......*971......674.396...635*..........................
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........../...728.952...413......*......744.......%..........................300..*....782................*.......742..&424........41+...564
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........375...%.........*......450.456.$.........714........851.327..#...+......*...+.......179.630....854..................................
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..251................195...887.....*........*209.......430.*......-.83.596....956..966.274.%.....*........................83.359........411.
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....%.......................*..........89.........194..+...491.........................&.....*.762..+741..........598.......*.....910..*....
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..........618+..............677........*..598........+..........-.....58....290...........795...........................*.....580.&....559..
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...................561..............910......-..321....834....602.752*....=..+........191..............463....@..........792..*.............
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............216.......%...722*668.....................$..................109............*....222...195*.......689....380.......637..........
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.127*.......757.....&......./954...................965..664........./......716*.+...........266....781.........989..........844...$.........
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................57.....................&118......=...........385.623...245..............345........*.....615-.....*..........*...768........
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....*..#620../.........*..........578..54...*..........780..251...634..946....*........................./....702........................*...
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..202.......815........724....#..............822..972...................$..........*.....#....@........27.....*...........268.....347.......
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.................+..........98.....703..............&....*52.....320.............670...318....734.............47..................+....239..
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..........905./50.........@...................971..................762.*..................169........915.682..........=......533.......502..
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.....884.................24...........262.........@.....531..698.......234.................................................%.......149..*...
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....................834.....994.......*........266.....*......*............................................/.....941.434...812.......*..211.
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.............133......*......*.....613...85..........871.......497..346...737....88.....176.....192$........128.*.......&......./163.26.....
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....734..543....*.....656....461........*......531..................*........../...*..&................$971.....931.........................
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................606....................506............................779.......30...211.....243..........................153...504.........
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92
src/day03.rs
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92
src/day03.rs
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use std::collections::{HashMap, HashSet};
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use aoc_runner_derive::{aoc, aoc_generator};
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use nom::{Finish, IResult};
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use simple_grid::GridIndex;
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fn parse_num(input: &str) -> IResult<&str, u32> {
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nom::character::complete::u32(input)
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}
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#[aoc_generator(day3)]
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fn input_generator(input: &str) -> Vec<String> {
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input.split('\n').map(|line| line.to_string()).collect()
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}
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#[aoc(day3, part1)]
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fn part1(input: &[String]) -> u32 {
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let mut symbol_neighbors = HashSet::new();
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for (row, line) in input.iter().enumerate() {
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for (col, ch) in line.chars().enumerate() {
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if !ch.is_ascii_digit() && ch != '.' {
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symbol_neighbors.extend(GridIndex::new(col, row).neighbors());
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}
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}
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}
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let mut part_sum = 0;
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for (row, line) in input.iter().enumerate() {
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let mut col: usize = 0;
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while col < line.len() {
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let ch = line.chars().nth(col).unwrap();
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if ch.is_ascii_digit() {
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let rest = &line[col..];
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let (rem, num) = parse_num(rest).finish().unwrap();
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let num_len = rest.len() - rem.len();
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for i in 0..num_len {
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if symbol_neighbors.contains(&GridIndex::new(col + i, row)) {
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part_sum += num;
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break;
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}
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}
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col += num_len;
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} else {
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col += 1;
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}
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}
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}
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part_sum
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}
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#[aoc(day3, part2)]
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fn part2(input: &[String]) -> u32 {
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let mut gear_locs = Vec::new();
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for (row, line) in input.iter().enumerate() {
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for (col, ch) in line.chars().enumerate() {
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if ch == '*' {
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gear_locs.push(GridIndex::new(col, row));
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}
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}
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}
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let mut gear_neighbor_numbers = HashMap::<usize, Vec<u32>>::new();
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for (row, line) in input.iter().enumerate() {
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let mut col: usize = 0;
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while col < line.len() {
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let ch = line.chars().nth(col).unwrap();
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if ch.is_ascii_digit() {
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let rest = &line[col..];
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let (rem, num) = parse_num(rest).finish().unwrap();
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let num_len = rest.len() - rem.len();
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for (gear_num, gear_loc) in gear_locs.iter().enumerate() {
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let neighbors = gear_loc.neighbors().collect::<Vec<_>>();
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for col in col..(col + num_len) {
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if neighbors.contains(&GridIndex::new(col, row)) {
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gear_neighbor_numbers.entry(gear_num).or_default().push(num);
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break;
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}
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}
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}
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col += num_len;
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} else {
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col += 1;
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}
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}
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}
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let mut gear_ratio_sum = 0;
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for (_, number_neighbors) in gear_neighbor_numbers.iter() {
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if number_neighbors.len() != 2 {
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continue;
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}
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gear_ratio_sum += number_neighbors[0] * number_neighbors[1];
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}
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gear_ratio_sum
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}
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@ -2,5 +2,6 @@ use aoc_runner_derive::aoc_lib;
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mod day01;
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mod day02;
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mod day03;
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aoc_lib! { year = 2023 }
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Block a user