2023 day 3.
This commit is contained in:
Mikaël Capelle
parent
53f05058f3
commit
d3eacd48aa
49
2023/day3.py
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49
2023/day3.py
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import string
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import sys
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from collections import defaultdict
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lines = list(filter(bool, sys.stdin.read().split("\n")))
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values: list[int] = []
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gears: dict[tuple[int, int], list[int]] = defaultdict(list)
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for i, line in enumerate(lines):
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j = 0
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while j < len(line):
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# skip everything until a digit is found (start of a number)
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if line[j] not in string.digits:
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j += 1
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continue
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# extract the range of the number and its value
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k = j + 1
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while k < len(line) and line[k] in string.digits:
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k += 1
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value = int(line[j:k])
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# lookup around the number if there is a symbol - we go through the number
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# itself but that should not matter since it only contains digits
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found = False
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for i2 in range(max(0, i - 1), min(i + 1, len(lines) - 1) + 1):
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for j2 in range(max(0, j - 1), min(k, len(line) - 1) + 1):
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assert i2 >= 0 and i2 < len(lines)
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assert j2 >= 0 and j2 < len(line)
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if lines[i2][j2] != "." and lines[i2][j2] not in string.digits:
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found = True
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if lines[i2][j2] == "*":
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gears[i2, j2].append(value)
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if found:
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values.append(value)
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# continue starting from the end of the number
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j = k
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answer_1 = sum(values)
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answer_2 = sum(v1 * v2 for v1, v2 in filter(lambda vs: len(vs) == 2, gears.values()))
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print(f"answer 1 is {answer_1}")
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print(f"answer 2 is {answer_2}")
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140
2023/inputs/day3.txt
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140
2023/inputs/day3.txt
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......124..................418.......587......770...........672.................564............................438..........512......653....
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665/...*......................*599.....*.983......794*..140..*...........@..963*....................445........*......*.........709.....*...
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.......246.....581......701..........108....%.532........../.73..699...927............................*....579.354.464..............298..86.
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........................*.....@...............%........$............+.........167..................408............................$..*......
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....914......335.......513..245....106=...............974................749.....*.702.......589........803........*176..386.....631..340...
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....*.......*...........................48...203@.............767......*..../.362...$......................*159.381.........................
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..620.....430.....612.507.........365.....................335../........938.................154.........@....................682............
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.....................*...........*..................470.........................889...........*.....@.489.....453$.329..334............86...
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..........324...............431..58..533-../..-...../......*405.................$.............47..474..............*......*.......930.*.....
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............/.....*350....................400.502...............$...........168.......855.635....................258.......794...+.....846..
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........................560...72.945..............866..........783..328....*....116......*...........179..904........682$..........333......
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.....674...........152....*....*....*815.........*........$609.............737../................583*........*.84..............767*.........
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..../......55@....+........645.914................987..................*..........972.........#.......80..750........588................=260
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.....................349&...................../.................754.407..203*720./.......207...14...............=88...+...767...............
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.........*824.............890.......269....893..271*139..645....*...................233...%................428...........*.........79.......
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..........................#............*.................@.../...316...844.............*........@439...287*......*974.....182...............
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....*.....50.......671+.................267........634*....417............-.598.....531....891................331................358.....341
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.883.561..*....428.........../14...742...........@.....654.....809../716.......*456.....=....*........$..............................607....
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...........835..*..796*............*..............321......612*.......................299..203....962..431..........277.......40......$.....
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......+591.....916.....294.........446..111......................237*77.....&........................-................*...150*....*......873
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....%..................................*.....................819............522.................922................738.........214.595..&...
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...552.........*...............+545.....627...........601......*..801..............867.....954....*.984.....752..........*830...............
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............276...939.............................979....*.........*........866*.....*.......*..963.-.................172...................
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278................*......@..........52........51*....851..766@..515.949=.......736...456...107............796.@668..................#......
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...*...431.................616..............................................79..................651.806.....%.............554.........740...
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.969...-............................-..........721.......555.657....+.........*....#....704........*.................556...*....196.........
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................*228..........312.201.....490...%.........*..#...815........896..417.....=....890.....274....884.683*.......327...*.........
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......@......742.............*........393*....=........715..............535...................*.........................529.....741.....#...
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.......386........244......196...............815...........869....+580...*...................71........654...454..346=.$.............909....
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....................................................265...$.............738..401...984...........265.....*......*...............-...........
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.......=.....184....148....14.........685...990..................80..=....../........$.......511....%.....424..400......184..551............
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.....71......*.......@............812.........&..$.....573*613.....*.677.......#.......299..&.......................933.....................
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...=.......142...917...-989....76*....230...*....105.............920.....+......371.......*............660..692.........553*........%.......
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341................&.....................=.29.............643.82......*...714............222....934......*....@.............178..581..+.....
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...............874...129.......................739*971.......*.......176.............3.@...........*..219..40..........#.............168....
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.....179..............*...741.......524...................................757.=633..*...136......63........*..........399...................
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.......*....315....307....*.....%..*.............718......371....=....654*..........89...................194........................+.23....
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.....737.........&........540.253...80...273......*.........&...773............492.................722........113....970..=195....702.......
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..............869..........................*.539...434...............393*933......*........679.874..%......=....*...........................
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............................$....148......43...*............@....................67.876........=......./..388..920......423.........-.......
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..118*773.142....%565.......397....*.........352..#..........217......................*....865......257..................*........421.415...
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............&.........898.............607..........897...631.................787...840.......*..............684.........34.359.........*....
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........995....235.....@.........#.......*.932*.............*73...940..997..#..........&.&...942...$.727..........115.........*122....380...
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................-................131...........265...827...........*....*............797.490.....845..*..........#....+823..................
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............96.......................383.......................53.292....19...536......................42..668..................579......666
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...-..487............680..&...*45...&........801.............*.*.................-........374.....................128..109.......%....*.....
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.611.+..............*.....151................=......739....622..572................103...........683.....245..748*....*............298.67...
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........*735......911...................562........@.........................458.....*...753........................275.362*................
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.....683......702.....736.230.....457.........................13................*..126...........458........................890.........992.
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...............*......*..........*.......499........10.........+...227.227...542..........................167....661....................*...
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.............691.7....135.62..157..570..*....304......*...........*......*................$589....#946....*.........*............132....190.
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........687.......*.........*............768..-...453..643.........844....706...%......................509........767......*................
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...........*....485......859...........*.........................................92...268.........193.....................385.....991*722...
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...-.....18..................217......853................................28..............*........@.......+......302........................
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...103......60=..*352...........*916........351.....347..=..452.810....................304..........539.346.......*....................*....
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......................610..........................=....990.....=...819....*496..797.................*........946..44..................261..
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.......630.............*........882.........................173....*...............*....903....44.....318.212.@.......-.....................
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.......-......-...........@..=.....*841.....812.......515......*....713....+.....566....*...................*......344..297....356.430..%...
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.........*482..453.......279.554./............#..320..*.....................671......873........&...637$.....413........@.........*.....906.
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....263...........................861......*....*.....908......365....123.......494.............134.................808.......*.....*.......
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..........465.....520%.....................432.76..........160........*......................26.......218....14.......*......598.874.844....
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...417......%.............138.....................$..............84..............272...573.....*.296.*................585...................
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...*................596...&......................783.....992..........*....982.....*.........857..*...314...797..265........*....*..547.#...
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....260........75....*...........389....616=.........5.....*.....695..427..*....780....-425......872..........*...*.......49....599.....19..
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..............+.......389...........*33.........596.......600......*......67......................................567.......................
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...802............................$.....302....*.....-93........434............$........554../339..............................277..........
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.....*....................$.....822.....*.....89...........233..........602.....911.....#..........958............475......773*.........%989
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..849.............228..868..217......679.......................99*...../............................*.......................................
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.........253.........*......*....................643..............796......-200...355..469.........174......=........174....279.638.........
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295*22..*............664...462.-238...................&765.........................*........................241..............$.......%......
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.......937.....25....................422.264.................244...........628...340..................106.........................551.....82
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897*.........../..60.......361.......*......#.....164.........*.......804*....%..........670*194........#.......#..........83...............
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....754............*.................51..47.......*.........487...585.....202........838..................28...734...*457..............427..
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............155...705......................*....912.....887..........................*....*875...........*........................&.........
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..952.621......*.............+983...........832.....783....@.......432#...+........530.223.............456......462...257*100......763......
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..........=..905........................892...............................262..85..........#..................-../.....................671..
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.........994...............476.............%.665...524...53*........939*........*..........703..497.........186............=.567........*...
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154...............$412......&..........-.....&.....-........41.109......282......676...........%....&80.@...............439...*.....@...997.
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........+130..................296.....308................@.....*...902..................................77....833.....%.....932.102.48......
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................407%.%685......*..........927.=222........426.450...*........12.....82...../..570................*...798..........*.........
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..825.....................923.429......#..*........#630...........409..314*..........*...569.....*....273..648...961.............279........
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...=..827=..........293.....#.........875.401.............457.433..........690.....600............929......*..............*245.......93..94.
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.............557.......*.......................52........@..........284.......................450......................986..........*.......
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........................463.....583..708...........................+........101....834.445.......*.....336...................694...333......
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....556....923................./......*..433.....182....181.........................*..*......492..598.*............260.....*...............
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......*.....*....430...............960....*...+..&.......*..=96.....628.282...@355.833.883...........*..468...420...........288.............
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...140...682......*..945...150............7.654....+83.941...........*......@................#....7.780.......*......922.........334........
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.............365..49.......$...590............................608.........503......./......36.....*.......74...340.....*....................
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..........@..*.......870.-.....*...284*556................288..*...@.............$.526............587....*...........387....................
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.......188....626.$......372.733.............................*..97.466.....776.541......................413.950..........696.162............
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...../.............755...........62......99...............224...............-.........333......................*..337.....*....#......%233..
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442..7.......=...................#...........875*705.548..............963...............*......180.....581...350.....*....513...............
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..............377....................................*.........#......*.........291......981..*...........*..........74..............&......
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......895.........644...................613.......540...........756.............%............390.263....754........#.....713-.....450.......
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...85*....$.............297......%.........*..........156............974./870....................*...........12....426.................483..
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.......774............#..*.....872.............361......-...196..................849...........419............*.........221....667..........
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...................961....604...........644....*...............*........../927......*......503................124........-......../...238...
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....370.............................531*......174.693.........349..................495.......*....925.......................................
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.....+...104....582...602*604...123..................*..896..........71@.....................767...............573@....656......%...........
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140........*...@...............*.........-........592..*....................806..692.....511...............755..........*......917...636....
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..........905.......462.....+...655......860..150.....800..903.......8*920..........*867.@...................=..........269.................
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....582..................217........842.........*...........*..................912...............551...615.......-..........343*129....+....
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....*........................./.....................752..347...275...127.@........*.....804.....#....+.#.........252...845............671...
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..862..........38..........293....429...@............*.......*...#.....*..245....330.......*18.....182.....$538..........&..725.............
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.................=.............46*....696.............581.664.........608...........................................%.......=...............
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...*724.....977.............................../................565...............#15...............................782.........359....$.....
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529.....373.*............198.983.....980..559..592...100.579......*889..145..839..............790.....496....193......................545...
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.........*..560..769.......*.....775...*.............*....@..104................*...%..820.....*......*.....*.............245...160.........
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.....338............@......28.......*...725.687....761......%...............%..423.773..*.....315....765..69.................*...*..........
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.851*.....619...333..............907..........*.........512....536..........98.........434....................48.613.973..941...554..751....
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....................*564....122.............608........$.........-.........................48.........435.......*.......*............&......
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...........165*967...........-..799.186.938......@.615...317........................630...........551*................345...................
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....968............281.546.......*.....*.......225.......*...162....372.........&85...+...177@...........719..55................360*........
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.......*.......%.......#.......226....................341.....*......*.............................341.........*...........989&.....321..618
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....884..554.163...%...............*423.233.................653...557....$....910...................*...........109....772..................
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..................854......167..560......@.....311...958..............492.....*.....*877.........@...911..797%...........*..................
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....852.815.....9.................................*....#...../..941.........960..494........56.375.....................50..+......=...106...
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....*......*461.&.......739....$..........=.$562.276.......408.....=.....................=...%.................769.........893..463..*......
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.133..................-........797.....313...........................................20.214.....357..776.471......*687.@.............527....
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.......14........899...845..........*..........+.....46........634........914.....84../...............*.....*780.......878..%36.435.........
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542.....*...........$........*833...257..329-.147...........+........150..*......*.......907...........429.........................*....#...
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.....517..799.44@.........230..........................477.579...........836......839.....-.....................964.704.............194..310
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298.......*....................307..800......346.65.....*..........414........@.......619........&442.............*..*......................
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...........510...+.....837.237*.........../.....*.....270.....818$..+..........27....*.................163.....140....647....764.163........
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................181...*..........536#....335......................................610..170...............*.-....................*.......&...
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.......................832........................#........&........611.........................&55...428..472....586......111........768...
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.......763.....................................461.........381......-............566..814.....*.....................*........./............8
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.............+.......................318............695............................=..%....323.756............711..663............827.......
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...........526....=....675...353&.....@..982#......*..................+.62...880+..................631.......$......................-.118...
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..................655....*....................795..30...922*.......978...+.&.........539...........-....719.................599.............
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......2...574%..................#.698...475.....*...........652./...........464.163$...*..338*966.........................../.....534..386..
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......*.......................404..#............747...703........231...-...............................................................*....
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.......906.................................&575.........&....457.......633...395..761...355.#780....3+......799+...............496...264....
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311............967.682............%.838...........253..........@..551.......@....*.....*.............................487.........*..........
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..........@.......*......925....376....&...419......=.............*..............20..952.111/....648.&........748................834..706...
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..443....940.............*....................*..........................820.684...................@.755........*........106.283............
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..............397.........803...84............627..........704.983..........*................522............................*....541........
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.....32....$.....#...643*..............116........./905......*..../...........311......811$.*........*890..........924..670........=....882.
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......*.....81.....*.....636.......317...*...................899.............*....*698............626....................-..+..@.......*....
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.......877......256.714...................825.........458....................869..............................54............28.823..110.....
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10
2023/tests/day3.txt
Normal file
10
2023/tests/day3.txt
Normal file
@ -0,0 +1,10 @@
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467..114..
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...*......
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617*......
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.....+.58.
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..592.....
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......755.
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...$.*....
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.664.598..
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Block a user