diff options
-rw-r--r-- | 2023/day3/solve2.py | 0 | ||||
-rw-r--r-- | 2024/day2/input | 1000 | ||||
-rw-r--r-- | 2024/day2/input_test | 6 | ||||
-rw-r--r-- | 2024/day2/solve.py | 31 | ||||
-rw-r--r-- | 2024/day2/solve2.py | 42 | ||||
-rw-r--r-- | 2024/day3/input | 6 | ||||
-rw-r--r-- | 2024/day3/input_test | 1 | ||||
-rw-r--r-- | 2024/day3/input_test2 | 1 | ||||
-rw-r--r-- | 2024/day3/solve.py | 12 | ||||
-rw-r--r-- | 2024/day3/solve2.py | 38 | ||||
-rw-r--r-- | 2024/day4/input | 140 | ||||
-rw-r--r-- | 2024/day4/input_test | 10 | ||||
-rw-r--r-- | 2024/day4/solve.py | 43 | ||||
-rw-r--r-- | 2024/day4/solve2.py | 33 |
14 files changed, 1363 insertions, 0 deletions
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\ No newline at end of file diff --git a/2024/day2/input_test b/2024/day2/input_test new file mode 100644 index 0000000..2d6faf5 --- /dev/null +++ b/2024/day2/input_test @@ -0,0 +1,6 @@ +7 6 4 2 1
+1 2 7 8 9
+9 7 6 2 1
+1 3 2 4 5
+8 6 4 4 1
+1 3 6 7 9
\ No newline at end of file diff --git a/2024/day2/solve.py b/2024/day2/solve.py new file mode 100644 index 0000000..3ec9967 --- /dev/null +++ b/2024/day2/solve.py @@ -0,0 +1,31 @@ +safe = unsafe = 0
+
+
+def is_safe(report: str) -> bool:
+ last_num = 0
+ increase = True
+ for ii, num in enumerate((int(elem) for elem in report.split())):
+ if ii != 0:
+ if ii == 1:
+ increase = num > last_num
+
+ if (num > last_num) != increase:
+ return False
+
+ diff = abs(num - last_num)
+ if diff < 1 or diff > 3:
+ return False
+
+ last_num = num
+
+ return True
+
+
+with open("input") as f:
+ for report in f.readlines():
+ if is_safe(report):
+ safe += 1
+ else:
+ unsafe += 1
+
+print(f"safe: {safe}\nunsafe: {unsafe}")
diff --git a/2024/day2/solve2.py b/2024/day2/solve2.py new file mode 100644 index 0000000..8e2f8e7 --- /dev/null +++ b/2024/day2/solve2.py @@ -0,0 +1,42 @@ +from typing import Generator
+
+safe = unsafe = 0
+
+
+def is_safe_with_dampening(report: str) -> bool:
+ numbers = [int(elem) for elem in report.split()]
+ for ii in range(len(numbers)):
+ if is_safe((elem for idx, elem in enumerate(numbers) if idx != ii)):
+ return True
+
+ return False
+
+
+def is_safe(numbers: Generator[int, None, None]) -> bool:
+ last_num = 0
+ increase = True
+ for ii, num in enumerate(numbers):
+ if ii != 0:
+ if ii == 1:
+ increase = num > last_num
+
+ if (num > last_num) != increase:
+ return False
+
+ diff = abs(num - last_num)
+ if diff < 1 or diff > 3:
+ return False
+
+ last_num = num
+
+ return True
+
+
+with open("input") as f:
+ for report in f.readlines():
+ if is_safe_with_dampening(report):
+ safe += 1
+ else:
+ unsafe += 1
+
+print(f"safe: {safe}\nunsafe: {unsafe}")
\ No newline at end of file diff --git a/2024/day3/input b/2024/day3/input new file mode 100644 index 0000000..64eaed9 --- /dev/null +++ b/2024/day3/input @@ -0,0 +1,6 @@ +from()$&mul(602,165)why()mul(305,64)?(where()-:mul(80,703);)why()*from()%select()mul(290,957)}/?%'from()]mul(851,335)mul(844,49)what()]![from(667,522)]}how()how()mul(938,695)#/)*?@~?@select()mul(706,392)^mul(242,513)who()@]mul(871,132)( ] from()$mul(41,656)^{(&how()from()[when()-when()mul(628,478)mul(287,621)why():'mul(127,825)# ]mul(360,578)select()?^^select() @:why()mul(136,849);{how()%*@%+how()[mul(544,891)mul(436,21)from()}mul(184,294)+/from(81,871) how()&?]mul(297,492)select()/}%;$$~{*mul(161,703)when():+(,mul(335,695) ()&where()?who();'mul(689,420)^how()from()how()what()>]where()don't()}%mul(78,176)~$where():@,>%mul(62,695)@{#how()mul(742,538)who(){$$who()@{+(mul(282,209)%mul(428,514)/+from()}>@<mul(131,844)mul(431,946)&mul(171,87)+mul(164,733)mul(760,223)/^$*@?[mul(485,824)! *(^-^;mul(465,327)@}when()+~&$?[%don't()$:/!]mul(249,931)mul(963,891)}$%>mul(665,815),mul(762,48)[+/mul(591,445)~?who()#mul(36,3)select()~$ [<}*/do()''>~'$mul(109,905)}how(){!@where()%/mul(380,929)*){~:where()mul(547,552)$:*mul(58,881)where(145,89)[why(634,213)mul(699,443)mul(826,660)what()from()-how()}'from()what()<;mul(700,665)] #(*?how()<+mul(507,719))~*/-^(%mul(941,551)$;don't()#;:when()+#>mul(87,663)who()/how()mul(332,238)~mul(290,235)',why()mul(950,204);where(),(when()mul(233,633)-^}@who()^mul(289,147)$>-'$select(736,261)*~]mul(899,836)'why()do()@when()why()from()mul(975,883);select()who()mul(165,847)why();^/{^mul(31,153)?;'don't()( <!from()from()~'(&mul(352,285)mul(912,583)<mul(192,230)/+~}<!mul(710,930)-how(461,167)][^why()do()*#mul(543,422)^*from()/^#~do()mul(832,873)]#when(455,108)^}who()/]mul(448,716)why()#/&mul(319,598)when()]{/ /'why()mul(865,894): +what()>from()+})what()mul(262,509)!*where()}/-#~/mul(308,953);*!]mul(741,76)[mul(256,536)[)>%-who()<^[$mul(382,338)where()[ when():select()<>mul(993,630)@$mul(411,640)/+where(623,926)/~mul(807,676)+*],mul(579,979who()what()from()when()how()what(),mul(882,434)&who()'mul(154,824)from()#<<,,{where()$mul(259,438)from()}?:;mul(641,967?from())<,>~mul(325,912)%select()mul where()do()where()where();(!,[$why()mul(131,307)mul(323,794)mul(570,548+!$from()!}what(588,195)<select()select()mul(622,782)why()mul(304,116)${(mul(942,260why()[?<$mul(420,225);~,>-from()mul(319,524)!/why()mul(737,137)+^&]/mul(228,919)@mul(672,604)+when(773,127)select()+why(941,245)mul(121!<[?$?;from(987,370):mul(904,487)#^what()from()({?mul(791,791)!,::)@^(mul(517,686)what()*how(),why()&mul(218,978)#,who()&$who()how(205,211)where()[mul(70,357)^$[?^$^what()mul(245,237)where()why()?{/mul$when()+},why()mul(264,30)@*:when(628,215):+&why()[mul(346,794){:}~-,select(),mul(115,926)~mul(140,56)[/:#~don't()@</mul(750,438)}::]!*!mul(64,9)}# ^mul(827,948)where(885,400)&mul(795,610)@mul(302,983)>:mul(889,788);;*!<$[when(),%mul(177,883)[mul(815,344)when()@$+ @)where(935,128)}{mul(638,520)why()-] when()] mul(639,171)!>[mulwho()~^:what()why()] <what() mul(595,754);mul(85,286)%<:mul(945,972)-mul(964,104)mul(163,666)don't()how()select(6,421),what()]mul(94,79)select()~[),-?mul(669,316)what()mul(452,152*~@]~why()how()when()mul(33,805)[how()select()[@]>mul(560,354)from()where()/];,how()} mul(980,896)
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+select()$how()]%]{~mul(183,456)::,+;![when()>mul(513,696)mul(835,886) from()##* select()%{mul(820,742)don't()why()mul(295,615)^]what()how()-what()*who()why(931,57)when()mul(688,219)!@mul(191,470)how()>?from()from(764,712):where(){:mul(951,673)!mul(536,960)[>?':]mul(353,508)!*how(977,514){)'mul(135,970)}>%select()select()::where()mul(580,976)'^when()mul(144,491)what()%&]mul(360,420(who()how() :@mul(925,707)mul(723,986){mul(465,348) mul(153,323)#~when();from()@}-;<mul(579,823)select())-?$&{select()?~mul(957,611%?from()what()select()('?mul(87,471)#select()-who()@mul(885,437)>] how()[^ :what()mul(990,144)}mul(567,848)select();@where()'(^@mul(620,639))how(711,187)how()select()+?)+^don't()mul(776who()$mul(592,515)what(),who(),mul(870,763)where():when()^>{}mul(503,440)mul(524,563)why(112,173)how()(,[;mul(235,893)how()*?/]mul(524,355%/],^]*^!%where()mul(464,297)select()from()who()};%what();{mul(289,689)#<mul(159,534)-[<why()%~?$<mul(789,482)-{$select()&{how()mul(220,671))!mul(122,701)mul(747,45)#(mul(249,127)~%'#~-where()how(),mul(83,660)}how()!who(882,504)from()where(){{mulwho()<+when(132,720){(from()how()@,mul(829,58):}[mul+)don't()#$?(@'{%where()how()mul(155,396)how()who()];-mul(454,202)mul(733,864))+]<mul(735,897)/ <;mul(80,402))mul(730,574)([*{who(){*who():what()mul(832,674))select()}+(who()-'mul(427,836)mul(79,877)mul(436,288)what(),:,*from()who()how()(mul(327,609)why()!)% &when()mul(372,811)where(623,779)where()@]when()don't()[{from(){mul(842,562)~who()]mul(814,697)']why()mul^*-where()from()>who()[&[mul(604,447)select()~#<;(~^mul(807,738)[~/from()mul(477,588) ^-]-mul(820,399)@-when()>%mul(580,918)mul(401why()*;],why()]]+!mul(343,445)*<+why()$mul(830~@who(),;from()#mul(776,674)?$who(){+mul(295,290){where()when()mul(321,389)&{'@<mul(338,854)*$do()()why()where()select()#where()what()$mul&'$mul(438,58)+mul(176,945)!$<&;do()when())select()}mul]!*why()where()from(),^^(,mul(765,384)@from()why(111,662) }(mul(496,9)*<#mul(391,60)!:;?!]:from()~mul(494,14)(mul(390,353)}@:why()@]where()&mul(885,604)+%@/?mul(254,601)@&:,mul(100,15)%select(301,302)*mul(71,315)(select()mul(871,371)mul(870,594);*#{>$}who()mul(879,995)*{from()/(;)mul(569,107)mul(223,576)~~>*@when()]]mul(624,981)?{^'$>(mul(812,37)what()-?:>&{+mul(731 < %-who()select()mul(656,82)how()'from()mul(446,744)'<;~why()}^:,]mul(461,437)when(245,888);$[%when(896,829)who()>{mul(791,568),-%$! ?#*mul(134,101),~<-'}how(672,596)?/mul(641,129) :from()#?mul(414 )]-%from(),@)(mul(53,315):@& ,who()where(734,227)^mul(271,699)from()>how():when(595,247)'}%',mul(730,933)from()',]why()+ how()where()mul(231,37)~<+&[$:}!:mulwhen(572,105)}who()mul(374,347)/-<mul(660,713)++when()?;who() mul(885,672)>why()*what()how()#!@}mul(230,754)-what()-</# ]don't()~+-:}+why()how()>:mul(759,756)select() $what()]^select()#how()?mul(567,572)mul(757,309)'[mul(530when()+/(*{mul(736,155)+*where(960,885)%: {:mul(713,672)!$*{#%mul(17,60)&what(966,667)what()why(): select(428,568)*!&mul(228,28)where()where()@/])do()}!/{^?{[why()mul(218,633)mul(156,644)>{~^[?mul(377,886) where()%who(159,149));how(909,452)-mul(869,404)>:mul(920,501){what())+how()mul(545,793)~-mul(74,347)where()!-;how()when()>)%mul(647,960})>;&why()mul(767,582)~^+;who()<)<)mul(494,399/;-from()^don't()why()mul(215,704)%%from()mul(392,808)-who()+where()[{-*/mul(869,412)from()mul(501,148)?'don't()from():}select()mul(796,221)select()mul<)@ ,when()}[:[what(96,456)mul(651,592)when()';$ (*why()mul(134,209);select())[mul(434,869)@{+'$mul(292,419)mul(175,874),from()select()$?[{^mul(866,742)
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+<mul(299,165) -mul(606,634)&select() /@who()<when()^mul(773,105)when(140,544)mul(565,610)>/why()[*>when())from()mul(163,222)who();select()@?select()mul(631,370)where()^%mul(48,604)%where()select()]%:!{mul(492,16):?select(566,72)'@+when()})mul(277,631)when()when()+%#mul(356,136)mul^who() from()!from()~[don't()?:#!mul(536,636){how()why(167,58){from()$;&mul(170,241)-~$mulwho(),mul(295,979)^when()$}mul(872,817)'^+ %%%@%;mul(796,401){@$from():%(@who()where()do()how();,>where()*how()mul(562,34)mul(851,857)([how()mul(870)do()^#]what()mul(855,774)>from()mul(19,63)<mul(20,808)what()when()}mul(9,565)')#where(){;/mul(485,358){?~#),{when()mul(760,344)where()~#what()from()}}{*'mul(76,561) }why();;what()select()where()#?mul(202,590)#{do();mul(537,456)#^'mul(231,127)when()(%],(}[-^mul(928!how()<when()+(mul(278,743)where()$mul(138#{{mul(612,612){select()@what(186,303),mul(577,261)/{*why()mul(739,172)$@-*;~mul(217,239)(-~;%who()why(681,472)where()who()mul(2%mul(30,720)'what()(~~mul(414,37)/when()%*}}%why()^mul(293,928)%,$#when()/^'don't()&from()mul(662,652why()when()mul(134,920)what()*?!;!how()@from()do()*!~~mul(472,62)])mul:*?@<$when()mul(403,2)mul(682,860):,when(198,260)?:[}[,&mul(940,144<+]*#:mul(274,552)*select()#}<mul(721,529),:who()mul(938,454)[where()mul(816,770)$#^*what()select()'~{select()mul(201,567where(223,485)^]from(721,470)why()>)from()/'#mul(502,592)$(mul(330,265)-*'why()/<@mul(919,336)'when()when()(~ mul(222,37)mul}*?mul(716,440);how(254,405)#mul(938,798)]why()+mul(370,761);+select())mul(308,872):!who()%mul(376,736)when()[don't()$;#~,how():select()~what()mul(793,522)){?who()/mul(812,372)<;@mul(627,289)[!don't()^+)how()$from()##mul(500,501)#{why(120,25)mul(571,651):&{?mul(792,25))@$(@>don't()who()?^')' from()[mul(323,38)when()where()*/who()%mul(623,356)?mul(629,625))}+how()mul(950,826)(+,#mul(947,453)why();'how()&]from()mul(510,94)-?[from(){mul(34,148){when()mul(661,839)do()/}who()mul(597,740)^;mul(6,887)~#how(287,928) $>?}:don't()/-%(,;/))mul(910,743)!:%,%}/mul(626,661)((&([mul(320,446){what()'~<-@mul(573,309)^:?why(352,585)how(328,377)(@mul(996,815),~don't()mul(558,873), what()?>]^$mul(647,533);$@]!when();;when()mul(508,819)&select()( select()mul(823,518)/<when():when()~why(744,571){mul(405,772):;where();(mul(132,162)] !how(74,640):select()/mul(721,482)$why(),*{mul(925,155)*!!<-!}don't(){)+#^mul(990,837)?,mul(867,142)mul(764,232)mul(754,292)$#,select()>-how(),]mul(584,720)mul(127,993)''why()'/![where()mul(130,642)*what()<?where()mul(325,585)select()when()>when()mul(648,223)#}])don't() !when(647,635)+&$ mul(154,204)@~~?mul(90,691)when()]^&from()'[mul(236,768)~where())^~->(&mul(378,233)<?mul(366,515)how()},don't()*what()what()~/select()mul(507,554)<+<mul(145,19)mul(444,536)%!%mul(861,889)#where()}-:{:^ mul(790,870)!from()why(343,804){*-how()from()mul(989,194)<!!when(586,215)where(238,474)}mul(430,90){+who(308,211),mul(365,640)mul(684,600)$^:}from()'&mul(745,81)how()select()who(897,36)]$+?&^don't()what()who(){from()}('$mul(782,153)mul(270,449)#*mul(371,710)]&what()*!{?mul(487,920)(mul(474,993)@%mul(70,96)what()?<@~*mul(639,92)<?%-(mul(154,267));mul(588,135)*$*: [where()mul(2,108)who()/~(why()~/,^mul(364,558)who()#'do()[select()(: when()mul(324,801)where())'#,mul(696,843)*,[mul(946,677)}[how(532,32)[when()'-where(){mul(254,222){select()
diff --git a/2024/day3/input_test b/2024/day3/input_test new file mode 100644 index 0000000..2e1a90a --- /dev/null +++ b/2024/day3/input_test @@ -0,0 +1 @@ +xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))
\ No newline at end of file diff --git a/2024/day3/input_test2 b/2024/day3/input_test2 new file mode 100644 index 0000000..b774ec9 --- /dev/null +++ b/2024/day3/input_test2 @@ -0,0 +1 @@ +xmul(2,4)&mul[3,7]!^don't()_mul(5,5)+mul(32,64](mul(11,8)undo()?mul(8,5))
\ No newline at end of file diff --git a/2024/day3/solve.py b/2024/day3/solve.py new file mode 100644 index 0000000..a651ff3 --- /dev/null +++ b/2024/day3/solve.py @@ -0,0 +1,12 @@ +import re
+
+pattern = re.compile('mul\\(([0-9]{1,3}),([0-9]{1,3})\\)')
+
+with open("input") as f:
+ data = f.read()
+
+result = 0
+for match in pattern.findall(data):
+ result += int(match[0]) * int(match[1])
+
+print(result)
diff --git a/2024/day3/solve2.py b/2024/day3/solve2.py new file mode 100644 index 0000000..3564eca --- /dev/null +++ b/2024/day3/solve2.py @@ -0,0 +1,38 @@ +import re
+
+pattern = re.compile('mul\\(([0-9]{1,3}),([0-9]{1,3})\\)')
+do_pattern = re.compile('do\\(\\)')
+dont_pattern = re.compile("don't\\(\\)")
+
+with open("input") as f:
+ data = f.read()
+
+do_dont_intervals = []
+
+for match in do_pattern.finditer(data):
+ do_dont_intervals.append((match.start(), True))
+
+for match in dont_pattern.finditer(data):
+ do_dont_intervals.append((match.start(), False))
+
+do_dont_intervals.sort(key=lambda elem: elem[0])
+
+
+def get_do_state(intervals: list[tuple[int, bool]], pos: int):
+ current_state = True
+ for elem in intervals:
+ if elem[0] > pos:
+ break
+ else:
+ current_state = elem[1]
+
+ return current_state
+
+
+result = 0
+for match in pattern.finditer(data):
+ if get_do_state(do_dont_intervals, match.start()):
+ result += int(match.group(1)) * int(match.group(2))
+
+
+print(result)
diff --git a/2024/day4/input b/2024/day4/input new file mode 100644 index 0000000..ea53c2c --- /dev/null +++ b/2024/day4/input @@ -0,0 +1,140 @@ +MMSSMSMXAMXMSSSSMMXSSMSAMASASXXAAXMAXXAMXAXSXMAMXMMMMSSMXMAAAMXMMMXXAMMAMSAMXXAMMMAAMMMSMMMMMXXSAMXMASXMXSMSXMXMMMSMSAMXSSMMXMMASMSMSMMMAMMS +AASAAAXMSMMAMAXAASMMAAMASXMMSASMSSXASAMXXAXMASAXXMMMAAAXMAMXMSAMSMSSMSMAMMMMSMAMASMMSXMAXXAASXAXAMXMASAMMSAMXMXMAAAXMASXMAMSAXXMSAAAAAASASXS +MXSMMMMAAMAAMXMSMMASMMMAMAAAMAMAAMMAXAMXSSXSAMSMSAMMMSSSMSXMAMAMXMAAXXMMSMAAASAMXSXASMSMSXSMSAMSXMAXASAMAMAMXMASMSXXSAMMSSMSAMSASMMSMSMSASAS +MMMASXSSMXSASXAXASMMAXMMSSMMMXMMMMSSSMSMMAAXXMAXXAMXMMXAAXAXASXMAMSXMSAMXMMSXSXSXMMXMAMXMAMMXAMAMMSMASMMASXMSSXSAMAAMAMMAMXMAAMAMMXXXXXMAMAX +SASXMAAXXMMAMXMMAMXSXMMMXASMMMMXSAAAAAAXMMMMMMXXMAMXMMSMMMSMXAXXXMAASAMXASXMAXXAMXASMSMAMXMASMMXSAAMXMASASAMAMAMAMMXAAMMAMXMMMMMXSAMASMMXMXM +SXSAMXMXMSMAMAMSAMXMXXAASAMXXASAMMSMMXMSMAMAMMASXSSMAAAAAAXMMMMXSMMMSAMMMMAMAMSMSMMSAMMMSSMAMXAXMMMSMSXMASXMASAMAXXAXAXSASAXAXXAAXAMAMAMAMAA +SASXSASAAASMSMMAAMXMSXMMXASXSSMXXAMXSMMXMASMXMXSAAMMMXXSMSXSAASMMSMASAMAAXMMAXXXAAXMXMASAAMAXMMSAMMAAXAMXMMSAXXXSXSAMSMSASXSASMMSSXMASAMAXXX +MAMXSASMSMSMAXMSSMXXMASMSXMASXMSMXSAXAAMMXSXXSMMMMMSMSAMXMASMXMAAXXAMAMSMSXSMSMSSSMSMSXSSSMXSASMASMSMSSMXMAMMSXMXAMXXMASMMAMAXXXAMXXXSXSSSSS +MAMMMAMXAXXMAXXAMXMASAMAASMSMAXXAAMMMMMSMAMXAMAXMMAAAMAMAMAMMSSMMMMSMSMAMSAMAAAXAMXAASAMAXXMAXXMAMXAMAAAMAXXMAXAMXMASMAMMMAMMMSMMSSSXXAXXAAA +SASXMAMSASAMXSMMXSMAMAMXMAXMSAMMMMMSASAMMAMSASXMSSMMMMAMXMSXAXXMASMXAMSSSMAMXMSMSMSMSMAMAMXAXMXMMSSMMSXMASXSSSMXSXXXXMAMXXAXAMXASAAMAMSMMMMM +SXXMMSMMASMMAMASAAMXXMMMXMAMAMXXMAASAXAXMAXAAAAAAAASMSSXSXXMSSMSXSAMMMAXAMXMSAMXAAXMMMAMMSMSASXSXAMXAAMSXXAMAAXAMMMMSSSSMSMSSXSMMMSMAAAXMASX +XMSSXMAMAMAXASAMSSMSXXSAAMXXAXXSXMMMASXMMSSMMMMMSSMMAXMASXMAMAAAXMAMXMASXMAMAMXXMSMAASASXAXMAXXMMMMMMXMXAMAMSMMXSAMAXAAXAAMMMASMXXMXXSSSMASM +MMAMASAMXSXMMMMXXXAMAASMXMMMMAMSAMXMMXMAXAMXXXXXMXAMXMMAMAMMMMAMSXASASASMSSSMMXSAXXSMSMMXSSMSSXSAXAASXMMXXAMMAMXAXSMMMMMMMSAMAMXMASXXMXAMASM 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\ No newline at end of file diff --git a/2024/day4/input_test b/2024/day4/input_test new file mode 100644 index 0000000..c41c5ea --- /dev/null +++ b/2024/day4/input_test @@ -0,0 +1,10 @@ +MMMSXXMASM +MSAMXMSMSA +AMXSXMAAMM +MSAMASMSMX +XMASAMXAMM +XXAMMXXAMA +SMSMSASXSS +SAXAMASAAA +MAMMMXMMMM +MXMXAXMASX
\ No newline at end of file diff --git a/2024/day4/solve.py b/2024/day4/solve.py new file mode 100644 index 0000000..da301c9 --- /dev/null +++ b/2024/day4/solve.py @@ -0,0 +1,43 @@ +def check_direction(lines: list[str], row_idx: int, col_idx: int, row_step: int, column_step: int) -> bool: + column_count = len(lines[0]) + row_count = len(lines) + for step, letter in enumerate("MAS"): + current_row = row_idx + (step + 1) * row_step + current_col = col_idx + (step + 1) * column_step + if current_row >= row_count or current_row < 0: + return False + + if current_col >= column_count or current_col < 0: + return False + + if lines[current_row][current_col] != letter: + return False + + return True + +def get_current_pos_words(lines: list[str], row_idx: int, col_idx: int) -> int: + if lines[row_idx][col_idx] != 'X': + return 0 + + count = 0 + for row_step in range(-1, 2): + for column_step in range(-1, 2): + if row_step == 0 and column_step == 0: + continue + + if check_direction(lines, row_idx, col_idx, row_step, column_step): + count += 1 + + return count + +data = [] +with open("input") as f: + for line in f: + data.append(line.strip()) + +result = 0 +for row, line in enumerate(data): + for col in range(len(line)): + result += get_current_pos_words(data, row, col) + +print(result)
\ No newline at end of file diff --git a/2024/day4/solve2.py b/2024/day4/solve2.py new file mode 100644 index 0000000..8866fc0 --- /dev/null +++ b/2024/day4/solve2.py @@ -0,0 +1,33 @@ +def is_xmas(lines: list[str], row_idx: int, col_idx: int) -> bool: + if lines[row_idx][col_idx] != 'A': + return False + + if row_idx == 0 or col_idx == 0 or row_idx == len(lines) - 1 or col_idx == len(lines[0]) - 1: + return False + + found_mas_count = 0 + for row_step in range(-1, 2, 2): + for column_step in range(-1, 2, 2): + current_corner = lines[row_idx + row_step][col_idx + column_step] + if current_corner == 'M': + if lines[row_idx - row_step][col_idx - column_step] == 'S': + found_mas_count += 1 + else: + return False + elif current_corner != 'S': + return False + + return found_mas_count == 2 + +data = [] +with open("input") as f: + for line in f: + data.append(line.strip()) + +result = 0 +for row, line in enumerate(data): + for col in range(len(line)): + if is_xmas(data, row, col): + result += 1 + +print(result)
\ No newline at end of file |