diff --git a/2024/03/Cargo.toml b/2024/03/Cargo.toml
new file mode 100644
index 0000000..5fb957a
--- /dev/null
+++ b/2024/03/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "aoc-2024-03"
+version = "0.1.0"
+authors = ["Mårten Kongstad <marten.kongstad@gmail.com>"]
+edition = "2021"
+
+[dependencies]
+anyhow = "1.0"
+aoc = { path = "../../aoc" }
+regex = "1.11.1"
diff --git a/2024/03/src/input.txt b/2024/03/src/input.txt
new file mode 100644
index 0000000..a1d15f0
--- /dev/null
+++ b/2024/03/src/input.txt
@@ -0,0 +1,6 @@
+why()$mul(735,469)^?!what()don't()~~('mul(982,758)what()^-^who()mul(294,364)&#/ )&%)[~mul(285,81)what()[{where()+ mul(129,761)^]why()>$^<>who()mul(53,344)select()%mul(567,352),mul(915,20)/#(>+^how()'mul(141,658){&~!how()from()?~?who()mul(830,116)#%;mul(139,634)?,#+who()@mul(169,719)[)?'-who();mul(18,751)},when(){;/mul(691,391)mul(856,314)^mul(558,88)]('/>how()@where()(,mul(274,100)%who()#~*mul(220,748)@how(){$how()/*%$when()mul(718,754)[!when(617,291)!{(what()+*do()[;<+ /from()[mul(840,803)}?mul(429,848)?select()how()^why()],&#select()mul(519,894){ !>:^@+mul(522,225)@!^^/'[>select(118,66)>mul(847,195)when(585,749)]mul(641,667):>mul(317,349) +:/^*what()mul(352,440)select()mul(349,981))@mul(450,917)why()how()mul(471,401)?where():}select():mul(632,956))mul(727,370)!}$~*%+$don't()why()select()^]who():mul(276,773)*^^mul(757,668):}mul(232,346)%[*@$ where()mul(898,992)who()why()~+['mul(43,434),where()who()>what()mul(908,953)select();do()}!select()when()!mul(676,368)how()from(966,785)@:$+)how()mul(414,120)mul(108,395) +~{#!@select(),mul(483,964)&do()?>mul(963,893)$,,/%'mul(318,508)?,{mul(390,813)select()>(select()mul(792,357)!{where();mul(717,18)why()$#]why()$^?mul(948,239)how()&>$from()]:>?select()mul(453,180)&&]&,[how()mul(674,281);*how()mul(548,919)how()]{{who()~+where()where()&mul(962,14)/why(),%>when()mul(31,451)/)&:,>}mul(225,266)-*)where()who()]#mul(224,69)#&-+~mul(309,393)@#;%!(][select()mul(389,558)+*how()*^+when()]when()mul(995,181);(mul(5,74)&(#^from()$~&don't()}? ,($ when()mul(216,767)>()!<mul(608,375),*mul(504,987)(/mul(398,418)][mul(39,637)mul(708,979)-]>,/how():@mul(425,905):]>>from()mul(93,831)}select()(mul(70,72)mul(137,510)[]{where()mul(477,400)&?/who()who(335,756){/mul(364,311),$select()what()mul(710,251){mul(351,763)+-}mul(517,661)mul!}?how()where()mul(948,407)-{<]*^from()who()from()mul(979,180)/,:#mul(602,496)%'what(),#}what()~how()mul(343,710))'when()from()#mul(314,877)(+,[?mul(480,685),;do()%<from()}where()]%{#:mul(256,15)]^]mul[$%;where()where()mul(134,380);^where();*mul(505,185)how()what()mul(684,993)%/from(){select()why()mul(265,113)who()@,mul(739,805)what()<}[$$:,mul(570,375))[mul(677,326)-{why()?<how()% mul(186,317)>*<^)from()what()#@what()mul(502,65)where()why()(!*where()from(){/mul(847,541)mul(116,490)]';how(612,404))when()who()&; don't()mul(446,220)(%'?;{^?mul(784,876);)]mul(959,402)%]];mul(362,432)mul(330,805)where()mul(142,473)~don't()-who()mul(965,688)when()[]):-}from()%mul(949,478)why()>~+,!&~,select()mul(633,237!-who()>where()]mul(809,464){@'/when()when()mul(720,462)&select()select() )@}'~how()mul(518,133)mul(512,118)/}what()*][++mul(56,978when(),where()&don't()who()}where()mul(329,879))&$,:when()#when()@what()mul)~who()(;mul(141,130)'?^}#+#from()'-mul(237,78)&what();];%where(614,809){:mul(391,45)mul(787,970)from()-?&~when()mul(59,790) what()where()~?what()mul(399,503)^from()where()when()mul(190,97);why()who() ,select(){mul(428,654)mul(350,302)?{mul(592,241)when()how()mul(705,191)who() !who()mul(50,6)~'from()% &]mul(902,106),select();/ why()from()>mul(800,867)select(659,586)~ )when()}~&'mul(709,298)-:'do()[who()what() mul(31,997)$%(where(309,559)%: mul(177,184)@mul(58,102)
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++when()mul(957,88){mul(446,234),(%[mul(225,735)mul(616,489)<[]~+@why(274,559)-why(45,518)mul(841,337)@mul(826,883)-(where()don't();@'+~/from()mul(829,811)(what()how()how()#mul(435,969)mul(743,179)from()/'[/,];mul(797,84)[from()>:~&$} mul(934,535)@?<?'select(),,<)mul(281,662)when()why()$>})%mul(630,155)]mul(81,271)why();@;%]who()mul(616,154)^do()^)-*;/mul(562,475)select()(select())$mul(119,594)what()<when()mul(738,534)where())(?($-)>?mul(103,712)why()(what()mul(358,496),why()~+<!when(324,160)[~%mul(48,331)?* select()/$;[?where()mul(56,877)$where()why()~'#mul(66,22)}where(),]mul(543,366)mul(510$@who(626,85)mul(481,102)%do()why()what()mul(92,160)mul(716,567);[>select()what()~select()from()mul(316,752):+^mul(851,254)select()from(){</how() /+don't()from()}?>when(216,975):*mul(776,658)from()from()?!mul(724,606)from()mul(878what()^%'why()>]mul(920,733)mul(500,262)when()why()do()]!who(333,560)]why()^ ,}mul(594,767)~':}!mul(69,623)})where()where()@-^mul(510,559)from()where()mul(990,412)%)[ how()mul(627,280)@mul(314,481)- from()how()who()}'<^*mul(515,459)$how()do()]mul(307,482)@~( $(@-%:mul(460,946)<how()what()what()when(609,900)*,<mul(500,943)+how(611,604)mul(851,219) [why()where()]>%mul(942,646) {>mul(160,832)where()when()what()~{where()&@mul(24,840)^#[mul(344,387)#how();mul(525,285)mul(221,638)-!/?#-$^don't()mul(91,395)select(43,376)what()]~mul(677,682)from()$ mul(358,545)$+%mul(697,89):how()who()^mul(599,952)?where()#mul(752,46)where()* ?},#'mul(803,569)select()+()-when()*mul(5,223)'<])#~*^[mul(360,79)<who()!*&where(75,589)^-!;mul(657,581)}-$mul(677,274):*mul(416,377)when(),$><$+mul(784,713)-%when();from()why()<]mul(288,526)';^~do()[;where()}%?<^<how()mul(674,809)/-(mul(93,723)$why()+;how()~)mul(588,165)mul(597,872)[%+)+from()when()why()<<mul(484,118):where()@:<,how()mul(824why()^?*^-}mul(805,860)#mul(54,678)~where()* >+<<mul(536,459)select(),select()^*{%mul(364,110)+-*$who()mul(996,17)*<how()^^',who()%mul(595,489)-#)]];mul(672,920)when()<*>mul(25,575)#^;mul(169,580)when() ^where();]mul(575,888)'who() &::,mul(172,538)@when()*!mul(718,235)%+/mul(281,117)who(),don't();what()how()select(126,34);why(460,565)mul(153,278)~when()*]mul(284,592)what()#@mul(416,344)+how()from(472,343)+]+*? mul(218,315)who()#:$@{}mul(415,704)mul(367,153)*where()!'do()what()[mul(298,416)<'*$:} !mul(8,562 ~#/[{~-$what()&mul(312,424) '??mul-$ -mul(49,590)>[+{how(472,207)]^mul(482,423)&why()(#^' mul(178,565)~^&>from()!#?don't()why()who(596,596))who()from()>how():{@mul(385,718) ~?@//*<mul(875,98)select()($?mul(427,44)],select()how()mul(942,194)how()~select()]/mul(558,119)select()&how()where():mul(858,264)&mul(400,374({}&&>*mul(783,105)~why(22,278):#how()do(),from()!:mul(40,924){[when(),/*mul(694~+mul(311,607)who()[/'mul(744,908)%>: ]~,:mul(310,993)from()%:-(+where()when()[mul(455,786)from()~]?from()^where()mul(460,406)how()when(831,855)'where()>[,:mul(250,253)~:select()){#)[[[mul(825!<{from()mul(205,719))why()@?%mul(729,531):where(); $~ mul(547,617)when()/mul(791,433)from()%select()what()%how()%}}mul(616,548)?%:',when()where()who(),mul(417,691)mul(548,124)<-%mul(459,792)mul(93,742)&from()who()select()mul(38,516)why()$ ; -how();mul(682,71);*why(603,344)mul(588,565)*#:do()'from()!who()-mul(564,344)mul(58,41)mul(881,91) when();/#!/usr/bin/perl!+'mul(791,572)
+%mul(264,168)mul(409,229)[#what()mul(393,212)$-from()'*do()mul(274,560)-{+::&>,mul(778,511)when()[;why()'how(701,98)%}mul(630,304){%{>*why(52,488)?}[(mul(149,108&'why(222,790)[mul(8,101)}>;why())what()mul$-%^why()mul(823,831)'*+mul(2,756)>, *don't();/}~&mul(602,479)~%)from()*}-when()%^mul(849,417)$>!-+from() +mul(280,463)'select(),@how(637,7)+&?mulhow(771,951)$mul(373,910)what()when()from()-]:why()mul(835,707):<]&when(915,675)~mul(628,69)&^@&#)mul(419,539):%:mul(534,992)'mul(987,602}why() when()]mul(438,915)~}$why()@!'#>don't()^)}?-select(355,550)},,(mul(649,262)^ *[&}<what()mul(504,106<(where()}!>/%mul(867,47)mul(104,808):@why()'@'($$mul(74,805)what(597,630)}(;]>~mul(217,927)>what()mul(669,965)>from()mul(647,126)->mul(52,497) select()<mul(168,794)!from() ^when()what(89,684)from()mul(516from();where()^%?{mul(154,856)?#!@*mul(197,299)#$where()select()+;when()>mul(22,612from()why()'mul(277,463)!mul(473,104)[!:;mul(655,992)how()>%(what()-mul'why()!&where(11,929)+mul(314,422)$how()what(610,732):&{~}#select()mul(517,349)why()!mul(815,441)#why(349,312)))<who()}%@who()mul(581,636)why()<mulwho()[ $%!)?~-mul(90,929)how()+mul(465,47)^!<>how()['$where()[mul(593,303)]#$^;mul(901,6)<-}:,who()mul(254,964)select()@['mul(297,705) who()#^mul(794,226)when()who()who(562,667)>}[mul(265,242$'from()@}mul(724,493)mul(313,610)*->%,mul(83,839)^)%mul(149,753)&when()select()from() 'mul(3,784)select()select(715,428)mul(502,975)how()who() !when();{[mul(106,800)<<do()<)when()@+select()(mul(330,370)(;how()#from(){from(147,942)$'/mul(465,263)(where()mul(793,96<:where()don't()^select()*mul(445,72)<$ <~#:[;mul(550,104)select()(mul(623,888)do()&)-who():~when()-}mul(876when()?+<what()(mul(89,377)mul(197,130)how()#??{!)(mul(627,592)*mul(417,712-~<mul(755,450)%][mul(94,330)mul(440,265)mul(462,481)+!&&))$<%,mul(667,710)^,mul(676,29)} {@:$where()@/mul(249,944)select()}mul(144,151)how()]#{@who(280,893)>;mul(513,728)select()select()}@;':from():mul(259,697}'$]&':<mul(468,141){:mul(603,934)?$mul(70,510)']?/mul(26,892) when()what()mul(783,778)^how()<]({mul(775,826)when()[^[?'(mul(883,142)where()what()]who() mul(286,488){'~:% ^},mul(207,126)&#select();~from()#mul(88,811)'}mul(828,951)~[<why()+%{select()how()mul(281,855)mul(553,325)where()*'select(343,389)+when()from();mul(133,474what()%&mul(930,882)-@mul(410,901)),$^~,when()!{who()do()who()select()where(811,718):^-from()mul(714,179)^what()who()?-what();:mul(668,570)+how()>+mul(998,295)how()@who();!mul(947,199)?/what()where()where()]mul(415,221)select(487,105)^mul(688,128)#&mul(394,445)mul(384,810) @!why()do();&!where(424,549)why()mul(934,449)%()-^from()?who()<(do()when()'what()#mul(424select(76,581):<+}from()#>+mul(616,317)#$what()@-select(425,315)mul(146,882)mul(509,291/#from()mul(152,967)why()how()mul(348,501)<[<who()mul(736select()+&[(@;?mul(658,85))*:where()$+!when(557,300)how()where()mul(801,846)-@{^+:-)(mul(201,50)how(980,573)~mul(447,803)*}mul(423,648)mul(666,375)how()&when()(;^:<what()mul(102,960)who()<~-+select()mul(503,58)what()where()?mul(280,485!who()where()@^mul(810,988)how()}:,{don't()+what()/!-where()select())*mul(762,285)*{[where()-;/+#mul(268,605) where()+{/?select();mul(596,753),select()why()@what(){what()mul(758,730)%mul(276,709)$:;mul(307,778#^who()select()where()&from();mul(397,362)!when()}}[mul(635,662)why()'<who(403,889)mul(609,78)select())how()where()^?mul(9,351)/who()}*!why()-mul(77,125)$select() what()/mul(614,43)+&][]{<mul(893,290)-?-^mul(590,17)!where():mul(931,59)/+how()from(610,234)why()mul(50,444)'mul)from()^*mul(401,587)%}[?when()~?)~#mul(872,883)+^when()! &),,+do()] >&^who()why():+mul(36/mul(856,681)!mul(46,203)
+mul(315,935)mul(451,658)when()when(353,392)<<select())$,mul(842,863,who()?}<mul(673,921)!$/mul(185,371){select()from()?from()&mul(412,471)' mul(566,75)%+()don't()~[<what()mul(923,512)>why()]*')mul(21,640)from()mul(755,282)>^why()from()mul(442,981)!when()^why()why()(/mul(876,31),who()/[mul(740,627)]<when()mul(616,896)]~){,,:{mul(475,422),%}&'}mul(153,843)+}?@,]&@*?mul(348,553)*$mul(542,601)$)mul(567,799)?}from()how(585,456)from() 'from()?mul(961,457)@;when()]why()<:?(mul(337,246)%where()+ #+how()mul(602,592),]@,^$mul(271,610)select()+why(34,14),//{^$+mul(183,953)who()when(290,111),]>who()/+[mul:+<?when()mul(346,464)*'@from()-where()][&mul(533,382) mul(253,576)!;)#<@from(260,939),mul(903,385)mul(389,764)^%who()why()where()what()mul(445,854)(who()^)?mul(714,731)!}how(100,829)];?where()?do()//<@mul(180,318)/)what(),;]mul(130,856)mul(796,929)mul(564]{how())[~'#>mul(557,285)!(&how()mul(538,865)select()what()~$from()([+when()/mul(826,278):@select(546,967)!?&select()what()mul(847,194)#<who()select()?why())@mul(997,603)]mul$&do()mul(434,51)}how()]^*$mul(18,446)~mul(540,181)]*]?select()when()<[mul(636,536))mulwhy(496,145)^)+>{mul(468,530)*![%where()^<<from(535,872)~mul(276,519)why(120,307):>what()?&mul(277^ mul(780,751)^what()~!#mul(635,606)?*when(): }who()]-don't()<from()&what()#@$mul(491,700)mul(887,685) +#how()}who()+mul(17,441)who(969,103)who()(why()mul(525,434){@]@~mul(760,445)mul(759,803)how()~ *when()mul(584,425)[;why())when(){(why()/how()mul(386,687);*-}]~who(224,978))mul(564,88)!;<-:),@%mul(309where()/;^-*?select() ]from()mul(504,612)*<,@*select(),'@mul(21,237)- when()<>mul(42,308)+,(how()how()$-!~mul(29,791)%)mul(248,71)#when()-)]mul(670when():from(505,247)who()>select()what()'(mul(327,578)from()from(){who()who()from()^/mulwhen(801,176)what()};}<don't(){what()([){]?%-mul(808,60)mul(207,689)mul?-who()~}~where()when()*,mul(81,901)>! :#-:who():/mul(466,327)#~'!),&>mul(776,335where()]why()&]?]:how()how(),do()mul(442,378)when()/^^mul(407,519)'-mul(157,451)+]from()when()when()/mul(689,597#{mul(387,624)><]&$!from()%[-don't()what()why(801,120)how():%select())(mul(847,645)where();&'}#how(698,791)!don't(){)<^mul(694,504)](/*{$who()+mul(480,559)where()#>'who()[}select()!@mul(225,926)when()?%>+mul(631,126)}#@how()mul(712,802)-select()why()~'mul(748,579)from()<who() )don't()how()from()# mul(48,962) @&;!where()/why()$mul(952,98)why()#*where()where()mul(850,784);[$#),;select()mul(420,384)why(),{<%#[mul(667,514)&*'don't(),<mul(401,476)~[how()<mul(441,886)mul(509,477how()~do()when()$?~mul(297,954]when(){from(423,995)@from()(<mul(167,382)&+how(){who():{mul(881,865)who()what():what();mul(335,170)**((mul(158,919)@+~from()'<^ -<mul(497,843)@mul(407,637);*{-#mul(377,786)select()-/,do()mul(63,526) ~why()select()what()mul(499,65)*@-where()!from()/where()mul(830,277)+mul(975,180)@-mul(366,372)(*:}when(623,620);)mul(109,618)-];from()$~what()}+mul(959,532)from();mul(660,115)- mul(48,647)<who()/what()%#{~why()@mul(78,243)where()$from()*+%/&{!mul(798,985)how()(%why()~ [,$!mul(20,376){when(741,432)^,+'who()'?mul#[}from()where()when()[}why()'-mul(905,28)(mul(713,649)<:<mul(357,904)/*/)(]mul(850,489),% *}mul(509,713)mul(321,759){mul(631,140)why()mul(757,485)>{%mul(649,879){:select()~&!,[ !mul(147,693)<+}mul(87,949)-{where(345,734)/ mul(351,115)></who()]$mul(548,692)how()#>mul(52,566)&mul(427,269)}mul(901,457)when()&mul(600,957)mul(734,851)!why()/[$/how();mul(383,59)'why(802,790)(;%'from()who()mul(904how()<;select()@{,who()>[don't()why()}[&[!mul(859,668)what()^mul(483,700)
+]where()>>>&^@what()mul(320,309)[#<#:]~/mul(497,511)mul(95,653)how():mul(572,330)&mul(809,308)*(&:mul(29,810)who()how():mul(915,147)when()^#mul(849,988);who()?,(/*mul(129,470)select())$select()-&/why()where():do()mul(590,753),@;'/mul(396,339)>%mul(613,991) '{,(mul(899,674))/$}from(656,762)'select()(';do()+-(@mul(502,495)]{$>@)+do()'why()select(),when()mul(454,97)')'where(326,126) select()mul(334,130who(494,552)%@*$who(979,600)mul(876,925)^&^mul(975,151))who()who()&mul(136,404);%!';#mul(450,492[}+[&[$}%//mul(487,75)%mul(870,786),when()why()+~>mul(316,132)-from()who()when()'@who()mul(169,959)~~when()]how()+from()*^mul?&why()how()mul(641,834)^:!(-#mul(197,843why()?}[-mul(479,27)#,/when()when(284,485)from()(mul{)from()+'$~from()*<mul(133,617)mul(211,614)?&#select()++}@mul(454,721)do()&mul(818,834)when();where()mul(863,7)? ;@<]mul(318,778),@@([(^$mul(572,286),:where(706,609)what()-!^how()~mul(532,946)mul(318,32)%mul(883,395)what() where())#mul#-#when()%mul(295,998)]why()&mul(459,716)~who()?#who()<how()-(mul(723,19), ,mul(25,912)where()what()mul(220,998),<){{'mul(537,203)how()what()$mul(179,953)+ &where(134,23)#?mul(654,670)]mul(120,530)#when()>mul(555,485)mul(37,175what()why()who()mul(849,203)who(607,487)how()select():&&;mul(874,736)when()/from(626,997)mul(482,451))who()[};mul(186,966)select()when()*mul(918,369)~who()](%mul(452,814)/&&^-!<what()what()mul(983,42)?;$[(+*what()don't()who()!)who()>&$<<{mul(161,632)]mul(434,106):){select()mul(137,656)why()*when()^mul(198,859):mul(589,609) @-mul(79,388)/+}~]}from()how(),do()@<#])-mul(673,936)!mul(999,158)%mul(600,817)%~!#<mul(503,532) )$why()&mul(157,960)*:when()(^mul(190,111) #mul(298,41)!)how()why()~;mul(467,828)%#*-#mul(745,381)mul(716,679)mul(901,414)#'->?@<^mul(948,543)$),'mul(108,479)]&mul(359,23)~@{+when()&%^!{mul(186,477)who()from()select()*{where()how()%%/mul(714,701)select()what()why()<mul(449,342)/#(mul(757,350)]/<+mul(765,807)-)])why():from()&{mul(239,945){+])mul(50,44)>from(138,787)<mul(808,115)*,why()why()mul(282,601)from()select()}!' mul(429,560)mul(495,752),who()];->from()'$ mul(589,314)&what()}]**where()don't()@'?<!mul(11,30)#{what():mul(62,714):from()where():@what()how():mul(770,297)$from(35,334)why()^)%where(775,186)mul(470,300)where()when()%select()#^mul(565,583)where()%):mul(188,39)-/mul(502,616)}{when()@/]&/mul(24,160)* ~&&-[,~,mul(132,324)who()[$}what()mul(756,950)/]*/'where()@~->mul(905,694)%~mul(52,222),?]mul(726,995):where()^'[/mul(948,887)how()mul(396,68)what(){;select()$[% (mul(939,722)why()from()$who() &,$]mul(917,716)how()where()']~%'mul(174,257)/how()why()@select()mul(673,441)-<)'?select()do()how():what()]{}?-mul(202,788)[mul(842,734)who(980,842)/?/{+how()select()&how(149,196)mul(533,78),@#select()don't();when()mul(595,87)[(how()-;do()@>what()mul(543,798)/&mul(118,844)who(520,900)>!mul(615,214)'-/select(){where()@do()*#{%/mul(254,489)$@*,who()^mul(209,427)<%how()'^!^{how()mul(112,898)where()-/what()% ^'mul(400,703)mul(347,239)+:who()select()'<,mul(695,520)mul(595,418)why()?!#&^,;,:mul(128,623)$:/@why()$,!$where()mul(489,451):]}mul(426,973)/)don't()-<]what()what()!how()mul(384,927)?select()~:]*])-#mul(210,978)why()-/
diff --git a/2024/03/src/main.rs b/2024/03/src/main.rs
new file mode 100644
index 0000000..659fb21
--- /dev/null
+++ b/2024/03/src/main.rs
@@ -0,0 +1,70 @@
+use anyhow::Result;
+use regex::Regex;
+
+fn main() -> Result<()> {
+    let input = include_str!("input.txt");
+    aoc::run!(part_one(input), 173517243)?;
+    aoc::run!(part_two(input), 100450138)?;
+    Ok(())
+}
+
+fn parse(input: &str, support_toggle_instr: bool) -> Result<Vec<(usize, usize)>> {
+    let re = if support_toggle_instr {
+        Regex::new(r#"do\(\)|don't\(\)|mul\((\d+),(\d+)\)"#).unwrap()
+    } else {
+        Regex::new(r#"mul\((\d+),(\d+)\)"#).unwrap()
+    };
+    let mut enabled = true;
+    let mut out = vec![];
+    for caps in re.captures_iter(input) {
+        if caps[0].starts_with("mul(") {
+            if enabled {
+                let a = caps[1].parse::<usize>()?;
+                let b = caps[2].parse::<usize>()?;
+                out.push((a, b));
+            }
+        } else if caps[0] == *"don't()" {
+            enabled = false;
+        } else if caps[0] == *"do()" {
+            enabled = true;
+        };
+    }
+    Ok(out)
+}
+
+fn part_one(input: &str) -> Result<usize> {
+    let pairs = parse(input, false)?;
+    Ok(pairs.into_iter().map(|(a, b)| a * b).sum())
+}
+
+fn part_two(input: &str) -> Result<usize> {
+    let pairs = parse(input, true)?;
+    Ok(pairs.into_iter().map(|(a, b)| a * b).sum())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    const INPUT_PART_ONE: &str = include_str!("test-input-part-one.txt");
+    const INPUT_PART_TWO: &str = include_str!("test-input-part-two.txt");
+
+    #[test]
+    fn test_parse() {
+        assert_eq!(
+            parse(INPUT_PART_ONE, false).unwrap(),
+            vec![(2, 4), (5, 5), (11, 8), (8, 5)]
+        );
+        assert_eq!(parse(INPUT_PART_TWO, true).unwrap(), vec![(2, 4), (8, 5)]);
+    }
+
+    #[test]
+    fn test_part_one() {
+        assert_eq!(part_one(INPUT_PART_ONE).unwrap(), 161);
+    }
+
+    #[test]
+    fn test_part_two() {
+        assert_eq!(part_two(INPUT_PART_TWO).unwrap(), 48);
+    }
+}
diff --git a/2024/03/src/test-input-part-one.txt b/2024/03/src/test-input-part-one.txt
new file mode 100644
index 0000000..f274bda
--- /dev/null
+++ b/2024/03/src/test-input-part-one.txt
@@ -0,0 +1 @@
+xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))
diff --git a/2024/03/src/test-input-part-two.txt b/2024/03/src/test-input-part-two.txt
new file mode 100644
index 0000000..30032cb
--- /dev/null
+++ b/2024/03/src/test-input-part-two.txt
@@ -0,0 +1 @@
+xmul(2,4)&mul[3,7]!^don't()_mul(5,5)+mul(32,64](mul(11,8)undo()?mul(8,5))
diff --git a/Cargo.lock b/Cargo.lock
index 7f1492a..c500de7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -835,6 +835,15 @@ dependencies = [
  "itertools 0.13.0",
 ]
 
+[[package]]
+name = "aoc-2024-03"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "aoc",
+ "regex",
+]
+
 [[package]]
 name = "ascii"
 version = "1.1.0"