diff --git a/day10/input.txt b/day10/input.txt
new file mode 100644
index 0000000..1115e8e
--- /dev/null
+++ b/day10/input.txt
@@ -0,0 +1,110 @@
+[<(<<([[[{<[{[[]()](<>())}<{()[]}<[]<>>>](<[()[]][()()]>)>[{{(()())(<>())}({()[]}{{}{}})}[(
+{{{(({[<<[{[(<()()>[<>{}])<<()()>[[]]>]{{<(){}>{()[]}}([()<>]<<>{}>)}}([[<[][]>({}{})]<({}[])
+<[[[(<[{{{(<({()<>)([][]))(<{}()>{[][]})>{[[{}()][[][]]]({{}[]}[()()])})}[{<([()()]{()<>}){([]
+[{[(<<{({{<<<{<>[]}{{}}>[({}<>){<>}]>[<<{}()>{<>[]}>[(()())({}())]]>}}({[(<({}{})<<>{}>>{<()()><[
+{{[{<<{[<{([({[]{}})])}>]}>><<<[[[<[([<>{}])<{[]{}}(<><>))]>]]({([{(<>())(()[])}<<()<>>>]<
+((<<{<[{[((<([()[]])<{<>{}}>>((<{}[]><(){}>)[<()<>>(<>())])}[<{<()[]>{()()}}>])]([{<{<()[]>({}<>)}>}]{
+{<[<<({{<<{(<<()()>((){})>[{<>()}{(){}}]){(<()()>){([]{})[()]}}}[([<<>[]>{{}}])]>>(<{([[[][]]({
+<({{[[[[[<[(<((){})({})>)[<({}<>)(<>)>{{<>}}]]><[<{[[][]]<<>{}>}{(<>()){[]{}}}>{({()}<()[]
+<<{<{{[[([<{{[(){}]<()[]>}<{<><>}[[][]]>}>[[[<()[]>]<{<>()}<[]{}>>]}]{<(<<<>{}>(<>[])>[{()(
+({{(({<([(<{{[[][]]<{}<>>}{{[]<>}}}>[({{()<>}(<>[])}<<<>[]>>){[([]{})]<{()<>}{(){}}>}])[<[{[{}[]]}[
+<([<{[{(<[[[((()[])[[]()]){[[]()](()<>)}][<(<>[]){()()}>{(<><>)[<>]}]]][((({{}[]}{[]()}))<[[{}<>]<[]
+{[[([<[<{({{{[<>{}]{(){}}}{{[]{}}<{}<>>}}<(<()<>>{()[]})<(<>())[[]()]>>}[<[{[]<>}(()()))<<[]{}>{<
+{<<<(([(((<[{(()[]){()<>}}]>)([<[<<><>>((){})]>][{[[{}[]][{}<>]]<<()<>>[{}[]]>}[[<<>{}>[{}[]]]<{[]()}>]]
+{{[(<<<(({{<<{{}<>}[<>[]]>([[]<>]<{}{}>)>{({{}{}}{[]<>})}}}[[{<{<><>}(<>())>{[()]}}<[(<>{})
+((({([{[[<{{([{}][{}<>]){[[]{}]{{}<>}}}[<{<>{}}><[[]{}]<<>()>>]}([(<()[]>[<>])[[[]()](())]
+({{<[{{<(([<{<<>[]><{}{}>}[(<>{})<()[]>]><[[[][]](()())](<[]()>(<>[]))>]{<{<{}[]>[{}[]>}><[[[]{}]<[]{}
+{{<[{<[<{[{((<[]<>>{{}[]})[([]<>)(()())])}][({[({}()){{}<>}]}({<[][]><<><>>}<[()<>]<[]<>>>))(<<<<>{}><(){}>
+{[<[{<{((<[(<([][])[(){}]>{([]())<[][]>})<{<<><>>{<>}}>]<<[{{}()}{<><>}][[{}()]{[]<>)]>{[{[]<>}<{}{}>]((<>
+<(<({(([{<[((<[]{}>[()[]]){((){})[(){}]})[[<[][]>{()<>}]({{}()})]]([(<<>()>{<>})<({}{})({}<>)>]((<<
+<<<[<<[(<<{{(<<>()>([]()))[{(){}}{{}[]}]}{<[(){}]>{[<>[]]([]<>)}}}([<<<><>>([]<>)]]{{<()()>{{}[]}}[{<
+{[<(<([([[<[{{<>{}}<{}()>}{<[]<>><<>()>}][{((){})[{}<>]}<{<>()}{<>{}}>]>{{<<[][]>[<>[]]><<()<>><[]<>>>}
+[{({<[{{([[[{({}<>)[<>[])}[[[][]]({}())]]](<<<(){}>[<>]>({(){}})>[(({}()){{}{}})<<<>{}>{<>[]}>])])}
+<[[<<((((<<([<()<>>{[]()}]({{}{}}<[]()>))>>{<<<{<>{}}>{(()[]){[][]}}>(({{}{}})[[<><>]{{}{}
+({[({<[{{[(([{<>()}([][])](<<>{}><[]>))[{{[]<>}<<>()>><[<>()]>])]}<<{<([()<>]){{(){}}(()())}
+((<{{<(<{<<({(<>{})}<[{}<>]{[]<>}>){{[<>]<<><>>}{[<>()]((){})}}>({({{}()}{()()}){[<>()]<<>{}>}}(<({}<>)([]())
+{{[<{({{[[({<([]<>)(()<>)>([{}<>]{()()})}([{{}{}}<<>[]>]{<()[]>{()()}}))]<<[{[<>()]<{}[]]}[[[]()
+[((<<{(<{(([{[<>{}]({}[])}([{}[]][()<>])])[[[(<>())([]<>)]]]){<([{[]{}}[<>()]]<[<>[]][<>{}]>)(<({}{})
+((<([(<<([{(<<<>{}><<><>>>[{[]()}])[{[<>{}][[]{}]}]}([[{<>()}({}[])]<<{}>{(){}}>]{[<[]<>>[(){}]>})][<<((()()
+<[<[<{({{{{({[[][]][<>[]]}<[[][]]>)[[<[]>((){})]]}<(<([]()){[][]}>[<<><>><[]<>>]]{(<<><>>)[<()[]>
+{<[((<(<[({<({[]()}([]{}])<[<>{}]{{}<>}>>({<()()><<>{}>}{[<><>]<<>[]>})}{[((<>)[[]()])]})[({{[()[]]<
+<{({[[{<{[<{([()[]][{}{}])}>({[<()()>(<><>)]<[()<>]([][])>}([<{}<>>(<>[])]({<>[]}(<>()))))]}(([{(([])
+<<(([[[({(<({[{}()]<()()>}<[{}{}]<[]()>>){[(<>{})[<>[]]][(()<>)(<>())]}>(<<[()()]([]{})>[[[]{}]{(){}}]
+({<{<<<{<<{(<<[]{}>([]{})><{{}}[()<>]>)}[([([]{})[{}[]]]{{<><>}[()<>]})]>{{<{<<>{}>}(<[]{}>[[]])>[<<()()><()
+(<<{[<{<{(<{[[{}[]]<()[]>]([()][{}[]])}(({()[]})({<><>}<{}<>>))>[[[<[][]>{(){}}]][<[(){}][{}]
+[[{{({[<<([{{[<><>]{<>{}}}}])><[{[{[[][]]{()<>>}{({}<>){[]}}]({{<>{}}<[]()>})}<{[<()<>>]([()[]][()])}{{<[]
+[([({<[[[[<<<[<>][<><>]><{[][]}{<>[]}>><{[[]]<<>{}>}>>[[(({}<>){{}<>})[<()[]>[()[]]]]]>{([{{<>}<
+{{[<[[<<{<{({{(){}}{(){}}}({<>()}{{}{}}))((({}())({}<>))([{}()][{}<>]))}>({(({()[]}){(<><>)<{}>}](<
+[({[<{{([[{([{()<>}<<>{}>]{<[]{}>})}({{[<>{})<{}()>}[[[][]]<{}[]>]})]]{<{<[<{}()>]>{{{()}(<>
+{[(([[(([<[(({()}<()<>>)<(<>[])({}[])>)]>])({[([[({}<>){<>()}](<{}<>>)](<((){})[<>[]])))([<([]())({}<>)>{[{}
+{([[({[[(<<(<[<>()]{{}()}>)<<(()[])>>><(((<>{})[[][]])[[[][]]{<>[]}])({<<>{}><{}[]>}<{{}[]}>)>>[{(([{}
+[(([<{[<<[<{<[{}{}]{[]()}><(<>())([]{})>}{[{[]()}[{}[]]]((()<>){()()})}>{([{<>[]}([]{})]<{[][]}({}{})>){{[[]{
+[<{<[<[([{{{{<<><>>}((()()){[]()})}{{{{}<>}([]{})}([<><>]{()()])}}{{({<>{}}<{}{}>)[<<><>>({}())]}}}<
+[<[[<{[((({(([<>{}]([][])){{[]()}<[][]>})[{[()<>}<()<>>}{<{}[]>}]}(<([<>{}]([]())){({}[])[<>{
+[{{<{<[<{([({([]())([]{})}{<()[]>[()<>]])(([<>{}][()[]])(<{}{}><()<>>))])}>]({(<[<(([]<>)([]<>))<[()<>](()
+<({<(([[<<[[{[{}()][()<>]}((<>[])[[]])]]{{<{{}{}}{<><>}><(<>)([]{}))}({(<>{})(<>[])}{<{}<>>{<>()}})}>({{{<
+(({<[([(<<(<(<<><>>)({{}()})>{{[<>()]}}){{[[()[]]{<>{}}]({[]{}})}[([()<>]{{}()}){{[]{}}(<>[])}]}>>({(<(((
+<[[{([<<[[(<<([][])[<>]>[[<>[]]]>)([<(()())<()[]>><[{}][[]]>])]((<[((){})[[]()]]<({}[]>[{}[]]>>
+[(<<<<({<[{<<<(){}>{[]{}}>([{}{}]({}[]))><<<[]{}>(()[])>{[{}()](()<>)}>}][<<[(<>[])<(){}>]({(){}}((){
+<[[[[{(<{([{((<>())[()<>]){<{}[]><{}()>}}][{{{<><>}[<>{}]}({{}{}}[<>{}])}[({(){}}[{}<>]){[{}[]]}]
+(<<[<(<(<[[{<[<>()]<<>>>{{()<>}<[]{}>}}[(<[][]>{{}()})({()[]}(()[]))]]({((()())[{}])<<{}()){{
+{{<([{{[(({([([][]){(){}}]){[{[]<>}(()<>)]<[{}]<<>>>}}<({{{}()}[{}()]}{<(){}>{<>[]}})<<[{}()]<<>()>]({
+((<<{<{[[(<[{([]())(<><>)}](<<{}()>(()<>)>[((){})[[]{}]})>([(<[]<>><{}<>>)][<<{}()>>[({}[])([][])]]))<{((
+[[<{{<[{({{[(<<>[]>[<><>])<{[]<>}<(){}>>]<[[{}<>]<{}()>]<<[][]><<>()>>>}<[({[]()})<(<><>)<<>{}
+<(({[[[<{<[(<([][])(<>{})>{{{}}[{}()]})]((<{(){}}(<>[])>([{}[]]{<>{}})){{({})}{[{}[]]}})>}{[[(((<><>}(()()))
+{[[{[({{[((<(({}{})){<[][]){{}()}}>){[({{}[]}([]{}))]{[<[]{}><[]{}>]}})({[{[[]{}]{()[]}}]<(<<>>)[{{}()}<{}<>
+{[[<{({([(<[[{{}[]}[()[]]][[[][]]({}{})]]<[<[]<>>[{}()]]<<<>()>[()()]>>>>{[([[()()]<<>[]>]
+<([[[[{([<{{(<[]{}>[[]]){<[]()>{()<>}}}[<<[][]>((){})>{{()<>}[[]{}]}]}>[{{{<()()><(){}>}<{()()}>}{[(()
+{(<{<([<[(({{[{}[]]({}[])}{{[]()}{<><>}}})[<<({}())[()[]]>{[[][]]<()[]>}>[<<()<>>([]())><[(){})<()()>>]]
+{[[(<([<(((([[{}{}]{[]()}]<(<>{})<[][]>>){{<{}{}><[][]>}[{()<>}[()[]]]})<(((<>{}){[]{}})[{[]()}
+{{<<<{[({{{{([(){}}[<>{}])[<(){}><{}{}>]}}[<[{<>{}}{{}{}}](<[]{}>[[][]])>]}({<{{{}{}}<{}[]>}([[]][{}<>]
+({{{(<[{{<[[(({}{})<[]<>>)([{}[]]{()[]})]((<()()>)[<[]{}>{<>[]}])])<[{(<{}>[[][]])<([]())[[]()]>}<
+(((<{{{(((([({()<>})<<[]<>>[<>]>])[((<<>[]>({}))[[[]()]<<><>>])(<{[][]}[{}()]><{{}[]}[()()]>)
+{[<[[<{<<({(<(<>()){[]()}><([]{})[<>{}]>)[[<{}[]><[]{}>][[{}[]]<[]<>>]]})>[<{<([()<>]{{}[]})<{{}[]}<{}<>>>
+((({{[(((([{<(())({}<>)>{[[]{}][[][]]}}{<<{}<>>{{}[]}>{(<><>)({}<>)}}][{{[(){}](<>{})}{<()
+{{<{({({[[<{{(()[])<()[]>}}[[{{}<>}(()[])][{{}{}}{{}<>}]]>{((<{}[]>{[]<>})({[]<>}{[][]}))[([[]<>]<()()>)<<<
+[[{{{{{[[{[(<[{}()]{[]()}><<()()>[(){}]>)<[[{}<>]{<>[]}]>]([(<{}<>>[[][]]){(<><>)(()[])]]<[[
+{({<[<{[<[[([[<><>][<><>]])[{{{}()}([]<>)}[[[]()][[][]]]]]<[<<()[]]{<>[]}><([])<<>()>>]{(<()<>><
+({<<<{<<{({<{[()[]]{(){}}}{((){}){{}[]}}><<{(){}}><{<>()}<{}{}>}>}<{[[[]]([]{})](<()<>>(()<>))}>)}<<[({[<>
+(<<<<{[{<({{{(<><>)<()[]>}{{[]()}{()()}}}<[<[]{}>(<>[])]{[[]<>]<[]<>>}>})[((([<>]{(){}})([(){}]<<>
+(([(((((<<{<[<()<>><[]()>]([()[]][<>{}])>{(((){})({}[]))(<[]{}><[]<>>)}}{(<<(){}>[{}]>{{()())<()[
+(({<([({(<{((<()()>{()[]}){<[][]>[[]<>]})[[{[]}{<><>}]<<[]><{}()>>]}(<(<[]{}><{}{}>)[(<><>){{}()}]>)>
+{<<{[{[<{{{({({})<<>()>})<{[{}{}]}[[{}()]]>}}([{(({}{}}(<><>))([<>[]](<>()))}[{[{}<>]}(<<>{}>(()<>))]])}<
+({[[{{{{[<{[([<>[]]{{}{}}><<<>[]>>]{[{()()}[()()]]}}((<[{}()][<>{}]>{([]()){()[]}})({[()<>](()[]
+[[{{(({{({<{<<{}()>>{<<>()><{}()>}}{[{<>[]}<{}>]{<[]<>>[{}[]]}}>{[[[{}<>]({}{})]<[{}{}]<(){}}>][{({}
+([[<<(<[<{{[[{(){}}<()[]>]{{()[]}}]({{[]{}}[(){}]](({}{})[[][]]))}{<[{<>[]}{{}<>}]{(<>{}){()()}}>}}<<{<(
+{[<[(({[[(([[[{}()](<><>)]{{{}()}({}[])}])[<((()[])<()()>)<{<>{}}>><[{<><>}(()[])]>])](<({
+{[{<<[(<{({<[[()<>]<[]{}>][(<>){{}<>}]>}<(<<<>[]>(()())>[(()<>)[[]<>]])<[<<>{}>[<><>]]{[<>{}]{[]}}>>)[
+[{([{<([[{[([{{}<>}[{}[]]][({}{})({}{})]){({<>[]}(()()))}](<[(()[])([]{})][<()[]>{[]{}}]><{(<>())<(
+([{({(((((({<({}<>)<<>[]>>{[<>[]][<><>]}}(<({}())<<>[]>>(([]<>)[<>{}])))[{({{}()}(()[])){<[]()><()(
+{[{[{{<{<{<{(<()<>><()[]>)}<<<()[]><{}{}>>((<>[])<{}<>>)>><<(([]())[<>{}])({<>()}<{}>)>{([[]<>
+([[(<<({{{{{[{()<>}[{}<>]]{{{}<>}<(){}>}}(([[][]][()()]))}({[{{}()}{()<>}]}<[([]<>)(<>())][(<>[]
+{[<<{<<<<{<((<{}[]>[[]{}])([()<>](<>())))<{[()()]<(){}>>{<()[]>[{}{}]}>>}<[(<{{}{}}[{}{}]>)[([[]
+<{{[(<(<{([{({{}[]})(<{}[]>{()<>})}]<[<<[]<>>([]<>)>{<[]{}><<>[]>}][[{()<>}[[]()]][{[]<>}(())]]>)([[[<{}
+(<(<{<[({[<(<<{}<>>{{}()}>{(<>[])<()>})<{(<>())<{}()>}{[()()]<[]{}>}>><(({(){}}[[]{}]){{{}
+[<[[[([{{<{[([<>]<[]()>){<()>[{}<>]}]{({[]()}[{}{}])[({}[])({}())]}}>}(<(<[[()[]]<(){}>]<<[][]>{()()}>>)((
+[<<{<<([<{<(<(<>{}){()<>}>(({}{})({}{})))<<(<>[]){[][]]>{[{}{}]{()()}}>><[[[<><>]{[]{}}](<{}<
+<{<{(<<((<{{[<<>()>[()<>]]{{<>()}(<>{}))}}>({[{{[]{}}[[][]]}({(){}}[[]()])][[<<>[]>[{}<>]]{(<>[])[(){
+((({([<{[[<(({{}{}}[{}()])(([]()){{}{}})){<<[]<>>{{}()}>{{{}[]}{[]()}}}>[((<()[]>(()()))((()<>)([]{})))((
+<(<<([{[(<<<{[{}<>]{()()}}(<<>>)>([([]()){[]<>}][[()<>][<>()]])>{[<((){})[{}[]]>{((){})({}())}][([<>[]]{[]
+{[({{[<{<[<(<([]<>)(<>())>[<(){}>({}[])])>]>([<{[{[]}{{}<>}][({}<>)[[]<>]]}[{(<>[])(<><>)}({()<>>{[][]
+<((((<<<{<[(<[{}{}]{{}}>){({<>()}{{}{}})[[{}<>]([]())]}]([<(()[])<{}()>>][(<[]{}>(<>{}))<(()()){[](
+<[<<(({([[[<<<[]()>[()<>]>([<>()][()()])>[{(<>[])[<>]}{<{}()><[]{}}}]]]]([<{[<{}{}>{[]{}}]<<<><>>[()()]>}>
+<[<{<{<({{{<<<[]<>>>((<>[])[{}()])][{<<>()><()()>}(<[][]>)]}<(<((){}){{}{}}>)>}})><{[{[{([{}{}]<[](
+({<{<{{([[{[((<>[]))]}<<<({}{})>(<[]{}>({}[]))>{[(<>())([]<>)]{{<>{}}{()<>}}}>]([<({<><>}{{}<>})[[[]<>](
+([[[([{[(<({([()[]])[{[][]}<{}<>>]}<(({}{}){()[]}){{<>[]}{(){}}}>)[<({<><>}{[]})(<(){}>(<><>))>{<[
+[{{<<{<{(<<({[()()]<()[]>})[{(<>[]){()[]}}{((){})(<>[])}]>}){<[[[[<><>]<[][]>]]<([[][]](<>[]))((<>{})
+<[((<{<(<[<[[<{}()>[[]<>]]([<>[]]<()>)]<<[<>[]]{()()}>]>([({()}((){}))]<{({}())[[]()]}(({}<>)<[]{}>)>
+[{{<(<{({(<<(<()[]><{}<>>)<<<>>>><<(<>[])[{}[]]>>>({[{[]<>}]<<<>[]><{}()>>}<({{}}<()<>>)<[<>()][<><>]>>))})
+([({({{{{<(<{{<>()}({}<>)}({{}<>}<[]<>>)>)>}[{(<{[[]<>][[]{}]}[[()<>]{<>}])){(<(<>[]){<>[]}><<()>[<
+{({[{{(([[<({[{}{}]})><{<<<>[]><{}[]>><{()<>}<()()>>}(<[<>()]{()()}><[{}[]]>)>]]<[[((({}())<[]()>)<<()[]>{
+[(<([{{([[<({{[]()}<(){}>}{({}<>)({}[])})>[(<{[][]}>({<>()}<[]<>>))]]{<{<<{}{}>[()[]]>[{[]<>}{()[]
+([<((<<({([[([()()][()[]])[<<>{}>]]])}]>>)[<<(([[[(<<>()>)[{<><>}([][])]][((<><>)<[]{}>)[[()()]<{}{}
+[[<{[[({[{{({[<>()][{}{}]}){[<()[]>][<()[]>[[]()]]}}}[[[([{}{}]{{}<>})[[{}[]]{(){}}]]]]]}{[{[<(<
+[[<({[<{{<<[[({}[])][<{}<>>({}{})]]{(<<><>>{<>[]})}><<<{{}{}}{{}()}>{{<>}<<>>}]<<[()()]<[]<>>>([<>()]{[]<
+<{{{([{[([{{({<><>}<[]<>>)}[({[]<>}){<{}())[<>[]]}]}{<[{{}{}}[{}{}]]>[[[()()][<>[]]]<{{}<>}
+({[{{([<[<<{{<<>()><{}()>}}[[<<><>>(<>{})][{[]{}}]]><{(([]))<([]{})(<>[])>}(({<>{}}{()})(<{}{}]<<>>))>>]>[{
+<(<([{{[[([[{<[]()>[[][]]}{[{}[]]<{}{}>}]<{<<>()><{}{}>}({{}})>]<((<()<>>[{}[]])({{}}<{}()>)){([[]<>]{<
+(({{(((<<{<{<{{}[]}<[]()>>[<()<>><{}<>>]}>[[(([][])<[]<>>)][[<()()><[]>]{(<><>)<()()>}]]}[<[<{()<>}
+(({{{{(<[<{([{{}()}<<>{}>][<{}[]>])}[{{{[]<>}[[]]}[<(){}>]}(<{[]()}{(){}}>{([]{}){[][]}})]>]>)}[([{[[[<<()<>
+(<{<[([{[(((({()}<[]()>)>))<{<[(<>[]){<>()}][(<>())(<><>)]><[<()()>][((){})<<>()>]>}{{[({}{}
diff --git a/day10/part1.py b/day10/part1.py
new file mode 100644
index 0000000..8514ff6
--- /dev/null
+++ b/day10/part1.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+
+lines = (x.strip() for x in open("input.txt"))
+
+cnt = 0
+OPEN, CLOSE, PENALTY = "([{<", ")]}>", [3, 57, 1197, 25137]
+MAP_CLOSE, MAP_PENALTY = dict(zip(OPEN, CLOSE)), dict(zip(CLOSE, PENALTY))
+for line in lines:
+    stack = []
+    for char in line:
+        if char in OPEN:
+            stack.append(char)
+        elif MAP_CLOSE[stack.pop()] != char:
+            cnt += MAP_PENALTY[char]
+            break
+
+print(cnt)
diff --git a/day10/part2.py b/day10/part2.py
new file mode 100644
index 0000000..e8bd3ba
--- /dev/null
+++ b/day10/part2.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+from functools import reduce
+
+lines = (x.strip() for x in open("input.txt"))
+
+cnt = []
+OPEN, CLOSE, PENALTY = "([{<", ")]}>", [1, 2, 3, 4]
+MAP_CLOSE, MAP_PENALTY = dict(zip(OPEN, CLOSE)), dict(zip(OPEN, PENALTY))
+for line in lines:
+    success = True
+    stack = []
+    for char in line:
+        if char in OPEN:
+            stack.append(char)
+        elif MAP_CLOSE[stack.pop()] != char:
+            success = False
+            break
+    if success:
+        cnt.append(reduce(lambda p, c: p*5 + MAP_PENALTY[c], stack[::-1], 0))
+
+cnt.sort()
+print(cnt[len(cnt) // 2])