diff --git a/data/day_10.txt b/data/day_10.txt
new file mode 100644
index 0000000..8914aed
--- /dev/null
+++ b/data/day_10.txt
@@ -0,0 +1,102 @@
+([({<(({<[(<([{}<>])<(()<>){<>[]}>>[[{<>{}}[<>{}]][(<>[])<{}<>>]]){[{{[][]}[[]{}]}({{}[]}[{}<>])]({({}{})
+([{{[(<{[{{<[{{}[]}{(){}}]{[{}{})([]())}>}(({{{}}{<>{}}}{(()[])(()<>)}){<<{}()><[][]>>})}(<<<(<
+((<[[<([[({{[([]{})([][])]{({}())(()}}}({[[][]](()<>)}(<[]{}>[[]{}]))}<[[{()<>}<[][]>]]{{{
+{{[{{<[{[[(<((<>())(<><>))<<()[]>>>)<<<(<><>)[()()]><([])<[]>>>{{({}()){[][]}}<[[]]>}>]]<[
+[<{(<{<<[[[[(<{}()>{{}()})[[()()]<{}()>]]{{<<><>>({}<>)}(([]{})[{}<>]}}]{{({[]<>}{[][]})<[<>[]]<{}()>>}[{
+<<{<{<<{<<[(([<>()][<>{}])[<()<>>{()[]}])[<({})<<>[]>><<[][]>[[]<>]>]]>>((<<<(<>[])[{}{}]>[<[]{}>({})]>>)<
+<[[[(<{[{((<{(()[])[{}<>]}([[][]][()<>])>[(<[]())<<><>>){({}{}){<>[]}}]))}]}>{<([<<[<(()<>)
+({{{<<<{({[{[<()[]>({}())]{<{}()>({}{})}}]{([(<>)<[]<>>]{([]<>)(()())})(<<<><>>{{}{}}>[({}{})<()
+{{<<[<[{<(({{({}<>)<<>()>}{{{}<>}}}{<({}())({}<>)>([<><>]{()[]})}))<[<{<[]{}>([][])}((<>())({}[]
+[[<([({<<<<{<{<><>}{()<>}>}>{(([[]{}>[{}()])[[[][]]])(<[[]<>](())>(<()[]>({}<>)))}>{<[<{{}{}}
+<<<[[(<[<<<{([{}[]]<[][]>){{(){}}[<>{}]}}><([{<><>}<[]()>]<[[]()]<{}{}>>)>>{(<[[(){}]](<<>()>[<><>]
+<<[<[<{[<[(<[<()[]>]{[{}[]][[]<>]}>)[{{[()()]{{}()}}{{<>}{{}<>}}}<{(()[]]{[]<>}}([<>()]<[]()>)>]]><{{<
+([([(<([((<{<[[][]](()[])}{<[]()>[<>[]]}}{({(){}}[{}[]]){{<>[]}[()[]]}}>[<({[]()}<()<>>)(<[]{}>([])
+<<{{([<<[{({[<{}[]>{()()}](<<>()>)}[[<()<>>{{}{}}]((<>[]){[][]})])([{((){}){[]{}}>{[{}{}]<()<>>}
+[(<[[<{({{{{{{<>()}([]{})}([()()])}([[()()]([])](<<>()>({}[])))}[{[[()[]][()()]]{[{}<>]}}<{({}())<[]{}>}<<<>[
+[({{{[(<{[[(<[<>[]]<[]()>>{{[]<>}})]<{([[]<>]([][])){{()()}{{}{}}}}>]}{{{[<({}())>(([]()){
+<({([<[([<<(<<<>{}>>[{<>[]}])>><<<(((){})[<>{}])<(()[])<{}<>>>>>([[[()][()]]])>]{<([<{[]<>}[{}<>]>]<{[()
+[([[{<({(([[{{{}<>)[[]()]}(({}<>)[{}{}])]]<<{({}<>)(()())}>{[[(){}]({}[])]<{{}{}}>}>)<{([[
+<(<<[{<<((<(<{<>[]}>[([]{}){<><>}])[{([]<>)(<>[])}(<()[]><[]<>>)]>))><[(<[([<>[]]<<>[]>){<()()}<{}>}
+<{{<([<{[{({({<><>}({}()))<({}<>)<(){}>>}[(<(){}>[{}<>])<(<>[])([]())>])}[[{({()<>}({}<>)){(<>())<{}
+[[(<({{<(({[{<()[]>{()[]}}]<[<()[]>{<>[]}]{{()[]}[{}{}]}>}(({({}<>)[[]{}]}[[[]()](()<>}])({{{}{}}}
+({<<[[[<<[(<([()()]{(){}})>)]((([<()><(){}>]<{[]<>}[[]]>)<(<[]<>>(<>[]))>)({[(<><>)[<>]]{<()
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+[<{([<{({{<[<<()[]>[(){}]>{{{}()}(<>[])}]>[{((<>{})<{}{}>){<{}[]>}}[(([]<>)(<>[])){({}())[{}<>]}]]}<[[[{{}()}
+([{{({{{[(<(({<>{}}<[]<>>))((<<><>>){<{}>{<><>}})><<[([][]){{}()}]([[]<>])><({()<>}[[]{}])<({
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+[[([<<[[<<<((((){}){{}[]}){<{}<>><{}{}>}){{<{}[]>[<>[]]}(<{}>(()()))}>[(<(<>{}){{}()}>(([])<()>)}<(<<>()>)<{[
+{({{[[({{{{<({[]()}<[][]>)>}{(({[][]}[()<>])<<[]{}><[]()>>)<([[]](()()))[{[]<>}(()[])]>}}}}((
+{[(([({[[(<{([[]][[]<>])<<<><>>[{}{}]>}{<({}{}>{{}()}>{(<>{})[[]<>]}}>)((([{{}()}({}[])])[[{<>{}}]([()()])]
+[[{(((<(<<<((((){})[()()])<[()()]{[]<>}>)>><<{([[]{}])}>[{({<>{}})((<>{})<[][]>)}({([][])[<
+{({{<[<{(([[<<<>{}><()<>>>{(()())([][])}]{{{(){}}[()<>]}(<<><>>{[][]})}]{[<[[]{}]<{}()>>((<><>)(()()))]<(<()<
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+<([<{[(((<((<{[]<>}<[]<>>>{<(){}>}))([[{<><>}{<>{}}]])>)(([[[({}())<<><>>][<<>[]>(<>())]]<<<<>{})[[]
+<{<{[(<<[<<{{{()<>}(()[])}((()[]){(){}})}>[{({<>()}[[]<>])[{{}()}<()[]>]}{([()<>][[]{}]][[{}<>][(){}]
+{([[{<({{[[{<<{}{}>{[]}}[(()<>){{}<>}]}(({[][]}{[]<>})[(<>)[()()]])]](<(<{()()}[<>]><[<>()]>
+({<[[([{[{({[<()()>[<>{}]]{[<>[]]<{}<>>}})}[([<{[]}<<>{}>>[([]<>)]][[([]())<<><>>]])]]}])]{<([({[(
+{{{{[[[{[[{(({[]()})){{(()[])<[]<>>}{<()[]>(<>())}}}]<{{<[<><>][{}()]>}[<{[][]}(<>[])>({[]()}
+[<{{([(<<{[<[[{}()]]<{{}<>}<[]()>>>[<<()<>>[<>[]]>]][[{<<>()>[(){}]}[<{}>{{}{}}]](((()>{{}}){[[]<>][
+[(<((({(<{<(({[]{}}(<><>))({{}()}{{}<>}))[<[<>()][[]()]><{{}[]}([][])>]>((<[[][]]>({{}()}<[]
+<[{{<[({{<(<<<{}<>>{(){}}>{{<><>}{{}()}}){([{}[]](()[]))[{{}<>}[<><>]]})(<[[{}<>]{(){}}]<{()[]}[<><>]
+<<({{[(({<{{{((){})<()()>}{[<>{}]{{}<>>}}{({()<>})[([][])<{}[]>]}}[{{{()<>}<[]()>}[<[]{}>{[]{}}]}[[[()[]]][({
+{{[[([([[{<<{[[][]]}>{<<<><>>{()[]}>{[{}()][{}{}]}}>}][[<([{<>[]}{<>()}]{{()<>}({}[])>)(<<[]{}>{[]<>}
+[[(<<{<[<[[<({<>[]}([]<>)}{<()()>}>]]{{<([(){}]{<>()})<[[]()][(){}]>><{<[]()>[<><>]}{(<>[])(()[])}>}}>[{
+<([{{<<{<({[<[{}<>][{}()]>[[()[]]{{}{}}]]<({[]<>}([][]))([(){}](()<>))>}<<({<><>}<<>()>)>>){[[([()<>]<{}
+{<<[[[[{<(<[[(()())<(){}>](<()[]><[]<>>)]<(<()[]>[<>[]])(<{}[]>({}{}))>><{(([]{})[<>()])<<{}[]>>}>)<({<{{}{}}
+<(({{([{{<([({()()}{{}{}})({[]<>}{<>[]})][(({}()){[]{}})({[]{}})]){<([<>]{<><>})[{{}[]}]><[
+[[{<<<<[<(<<<<[][]>(<>()]>{[<>()]{(){}}}>>{[<<{}()><<>()>><{[]()}{{}[]}>]<(<{}[]><<>()>)({[][]}([]{
+{[([(([[{{{[{{<>[]}}(<[]{}>)]>(((<{}{}><(){}>)([[]{}]))(<[{}{}]{{}()}>{[[][]][(){}]}))}}]](<(((<{<<
+<{{([[((({{[[[[]<>]<<>{}>][{()<>}{(){}}]]}[<<<[]<>><<>[]>>>]}<{[(<<>[]>(<>{}))[<{}()>(<><>)]]([{{}[]}{{}[
+[<[[{{([<<<{{[(){}](<>[])]<<(){}>{{}[]}>}<[{()<>}{<>[]}][<{}>[[]]]>>{[[({}())]<<<><>>>][({{}[]}
+[[(<[{[(({{[<<<><>><{}()>>{({}[])<<>{}>}}}}[[[<[()()]<{}()>><((){})(()[])>]]{[{{<><>}<()[]>}[({}<>)<[][]>
+({{[[<([<[{<[([]<>){[][]}]<((){})<<>[]>>><<<{}<>>[()<>]><{<>{}}{<>[]}>>]](([[(()<>){(){}}]<[<><>][{}{
+{([([<{([{[[[{[][]}<()[]>]](<<<><>>>{<<>()>({})})]}[(<<[{}[]][[]()]>[<[]<>>([]<>)]>)<{[<()(
+<(({[[<{{{[({(<>){{}[]}}[({}()){[][]}])[[{()()}<[][]>][<()<>>([]<>)]])}{[<[(<>{}){()}][(()()){[]<>}]>(([
+[<<[[<([([[[([[]<>]<<>{}}){<[]{}>[{}<>]}]((({}{})){{[]<>}([][])})](([((){}){{}{}}]){({{}[]}<{
+[[{{<{[<<[({<<()()>[[]<>]>[(()<>){()()}]}[<<{}<>>([]())>{<()[]>[{}<>]}])]><[{{{{[]<>}(<>())}[(()())([
+{<([{{(<<{([{<()()>{<>[]}}]{((()[])([]()))})}>{(<({<{}<>>}{[[][]](<>[])})><{<[<>]>[{()[]}{()[]}]}{{
+({(<{<{[{<{{([()[]]([]{}))[(()){[]{}}]}({{[][]}([][])})}<<<(<>[])[[]{}]>{[<>()](()())}><<[
+{[[<[<<[[{({{{[][]}<[]()>}}([{[][]}(()<>)][[<>()](()[])]))}([[({{}<>}(()[])){{[]()}(<>{})}][{
+<{[({{[{[[[<<({}[])<()>>(({}{})[[]()])>]<({(()<>)]<[()[]]>)[(((){})){((){}){<>[]}}]>]]}][{[[[(<
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+{<(((([[{{[<{[()[]]{<>[]}}[<{}<>>{()()}]>](([<[]{}>[{}{}]]{{()[]}{(){}}})<{({}[])[{}<>]}({<>[]}({}()))>
+[<<(<({[[<{([[<>{}]<{}<>>]{{<>{}}[[][]]})<(<(){}>{[]{}}){([]())[()()]}>}[<({<><>}[<>{}])[(<>())[<>{}]]
+(<{<{[[<(((<[{<>()}<{}()>]><[[[]{}]]({(){}}{<>()})>){<<[[]()]{<>[]}>>[[<<>[]><{}[]>][{[]{}}
+({[{(([[([[[[{()[]}]][{[()]}({[][]}([][]))]](<{<{}[]>((){})}{[()<>]<{}[]>}>[(([][]){[]<>})[(<>()
+{[{((<{<{[<[{[<><>](()())}]>(<(<()()>)>{(([])<[]()>)<<()<>>[<>[]]>})]([<([<>[]](<><>))((<><>))>])}
+<[<[[<<<{[[{((<>{})[<>()]){[<>[]]<{}<>>}}(<[(){}]{{}()}>{({}{}){{}{}}})]]([[[[()()](()[])][{(){}}(()()
+([{<[{<{<{<<<(())[<>()]>[<<><>>]>(<[<><>]<{}<>>><{{}{}}[()[]>>)>[<[[<>()][[]{}]]<[()()][<>[]]>>(<({}[])<{
+{[[{<{<<<(<[<(()())[<>[]]><[()[]]>>[<[(){}]<<>[]>>{<{}{}>[()<>]}]>)>>><<<[(<[<{}()>[<>()]]
+(<[[(({<<[((<(<>())>[[[]()]([])])<{[<>()]{<>[]}}[<<>[]>]>)(<<[<>{}]<[]()>>>[{{[]{}}<()<>>}{(
+{{<<[<<<[[{{{<<>()>(<>())}[<<>()><[]<>>]}<(<<>()>{(){}}){<<>()>}>}[<{(<>[]){{}<>}}[{(){}}[(){}]]>{
+([{<(<[{[([(<{{}[]}((){})>[<<>()>[()[]]])]({<([][]){{}<>}>})){[{({[]{}}([]<>))<[[]<>]>}]}]}[<[{[<[<>
+(<{{([<<<{([[<()>([]<>)]<[[]{}]>]){({<<>()><<>()>}[[[]<>><[]>])<{([])[[]<>]}<<<>{}>{[]()}>>}}><[(({{{}()}
+<{<<[[([(<(({[<>{}]<<>[]>}[([][])[[]()]])[{<<>[]}{[]()}}{[()()]([][])}])>[(<({<>[]}<(){}>)<<()<>>[[][]]
+((<([[[<<{{[<(()())>]}}[{<<{{}{}}{()[]}>{{<>{}}}>{([[]{}][()<>])({(){}}<<>[]>)]}{<<<<>()>><<(){}>{{}[]}
+[<<<{<{[[{{<<[[]](()[])>{({}{})[{}()]}>[([{}]([]())){(()[])<{}<>>}]){[{{[]}[[]]}<{[]{}}<()()>>]}
+[[(<((<{[<<[[[(){}]<()()>]{(<><>)[<>[]]}]>((<{()<>}[<>[]]>((()())<{}[]>)))>[([<<{}<>>({}[])>((()<>){[][
+[<(<(({[{<<<[({}[])[[]()]]>{<<<><>>[()()]><[[]()]{<><>})}>[[<([])(<>)>{[(){}](<>{})}][{[[]()][{}<>]}<
+([<{[{((<[([({{}[]}[{}[]])<{[]{}}<<><>>>]{<(<>{})[<><>]>({[][]}<()<>>)})[<(<{}[]>({}{})){{[]()}}>(
+[<[<({<({((<[{[]<>}({}{})](<{}()>{[]()})>{{[[][]][()()]}([[]()]([]{}))}){[<[[]()]>[<[]()>{()<>}]]})}<[[{{<[]
+<{[[[[[{(<((<{[]{}}({}[]]>(<()[]>))){[({<>[]}{{}()})<[[][]]<[]<>>>][{{()[]}(()<>)}{(<>{})<[]<>>}]}>({[([
+[(([[<[{<[[<{{()<>}[<>()]}(({}()){()<>})>]]<[{{{()[]}{<><>})[{[][]}]}]>>[[[{[{()<>}[<>()]]({
+([[([([<{{((([<><>]){[<>{}](()[])}){<<<>()>[{}()]>})[[<[{}()]([]{})>]]}{[{{([]()){(){}}}(<{}{}>)}{[<
+{{{{(<[(<(<[{([][])[<>()]}<{{}()}>][<(<><>)<[]<>>>{{<><>}[()()]>]>([({[]()}(()[]))[({}[])((){}
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+[{(<<([[{(<{<[()[]][<>]>[{<>[]}<()[]>]}>[([{[]<>}{()<>}])({(<>())}{<{}[]>{[]()}})]){([[<[]<>>{{}{}}]([[]{}][[
+<[(<<<<<<{{([[<>()]{{}()}]<({}[])({}<>)>){{[[]<>]({}[])}}}({<(<>())(<>())><([]){[]<>}>})}{{(<({}{}
+[[<[{{<<<([[<{<><>}<()<>>>{{()}({}{})}]{[<{}[]>{[]{}}][{<><>}(<><>)]}](({<<>()>})[<<[][]>[<>()
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+{<<({<[({{{(<({}{})<[]()>><({}[]){()[]}>)(((()<>)<{}{}>)({<>()}({}[])>)}{({<{}{}>{(){}}}(<[]{}>{<
+<<[<{<<[<{([([{}[]][(){}]){([]())[{}()]}])}>{{([{[()()]<[][]>}[({}[])((){})]]{({[]{}}[[]<>]){(()())({}[]
+[[({<{[(({<({<<>{}><[]{}>}[({}()){<>[]}])>})[[<([<[]>[{}<>]][([]{}){[]}])>(<[[<>()}{<>{}}][{()[]
+{[<[[[{[<[{{<{{}<>}{<>[]}>{([]<>){{}{}}]}}<{((<>{})[()()]){{<>()}<{}[]>}}<<<<>[]>>{[()[]][{}{}]}>>]{[({{<>()}
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+[{<(({<[<[[[[{<>[]}]]([{()<>}<()[]>]([[]<>]<<><>>))][{<{[]}{[][]}>[[<>{}]<[][]]]}<[(<><>)[<
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+(({{((<{[{({(([]{})<()>>{{{}()}([]<>)}}){<((<>())(())){<()()>([]())}>}}[{(<<<>{}>>[<(){}>{()<>}])}
+<[<[(([{<[{(<<<>()>[{}<>]><<<>()>[{}{}]>)<({[]{}}[{}[]])[[()<>]({}<>)]>}<[<{[][]}<[][]>>[<<><>>]][{({}[])
+{[{<[([[[[({{[{}{}]{[]()}}<([][])[[][]]>}{({<>()}(<>[]))[({}<>)[<>{}]]})]]]{{{{[[[{}[]](()<>)][
diff --git a/src/day_10.jl b/src/day_10.jl
new file mode 100644
index 0000000..0107806
--- /dev/null
+++ b/src/day_10.jl
@@ -0,0 +1,108 @@
+include(joinpath(readchomp(`git rev-parse --show-toplevel`), "aoc.jl"))
+import .Aoc: @aoc
+using Pipe: @pipe
+using Combinatorics
+
+
+function check_line(l, dict, scores)
+		braces = []
+		for b in l
+			if b in keys(dict)
+				push!(braces, b)
+				continue
+			end
+			if length(braces) != 0 && b == dict[braces[end]]
+				pop!(braces)
+				continue
+			else
+			@info "found $b"
+			t = braces[end]
+			@info "should be $t"
+				return scores[b]
+			end
+		end
+		return 0
+end
+
+function p1(input::Vector{String})
+	dict = Dict(
+							'(' => ')',
+							'[' => ']',
+								'<' => '>',
+												'{' => '}'
+							)
+	scores = Dict(
+							')' => 3,
+	']' => 57,
+								'>' => 25137,
+								'}' => 1197)
+	sum = 0
+	for l in input
+		sum += check_line(l, dict, scores)
+	end
+	return sum
+end
+
+function corrupted(l, dict)
+	braces = []
+	for b in l
+		if b in keys(dict)
+			push!(braces, b)
+			continue
+		end
+		if length(braces) != 0 && b == dict[braces[end]]
+			pop!(braces)
+			continue
+		else
+			return true
+		end
+	end
+	return false
+end
+
+function complete(l, dict)
+	braces = []
+	for b in l
+		if b in keys(dict)
+			push!(braces, b)
+			continue
+		end
+		if length(braces) != 0 && b == dict[braces[end]]
+			pop!(braces)
+			continue
+		end
+	end
+	out = []
+	for c in reverse(braces)
+		push!(out, dict[c])
+	end
+	return out
+end
+
+function p2(input::Vector{String})
+	dict = Dict(
+							'(' => ')',
+							'[' => ']',
+								'<' => '>',
+												'{' => '}'
+							)
+	scores = Dict(
+							')' => 1,
+							']' => 2,
+							'}' => 3,
+							'>' => 4)
+	line_scores = []
+	remaining = filter(x -> !corrupted(x, dict), input)
+	a = [complete(x, dict) for x in remaining]
+	out = []
+	for e in a
+		score = 0
+		for c in e
+			score = score * 5 + scores[c]
+		end
+		push!(out, score)
+	end
+	return sort(out)[convert(Int,round(length(out)/2, RoundUp))]
+end
+
+@aoc(2021, 10)