diff --git a/2021/d10/ex2/input b/2021/d10/ex2/input
new file mode 100644
index 0000000..3a3d7bd
--- /dev/null
+++ b/2021/d10/ex2/input
@@ -0,0 +1,110 @@
+<{[[({([{<[[([()<>]<<><>>)<[[]()]{<>()}>][<(()[])<()<>>>]]<(<(<><>)(())>)[<([]()){<><>}>{{()<>}<{}>}]>>[({
+<<({<{{{[(<{([{}{}]{{}[]}){({}())}}<<[[][]](()<>)>[{<><>}<{}<>>]>>(<[[()]([]{})]((()<>)[()()
+({<<({[<[[<[([()])]<<<{}<>><()[]>>[[()<>]<[]()>]>>([((()[])[()])]{[[()()]<<><>>][{<>[]}(()<>)]})
+(([[<<[{(({{{(()<>)[()()]}[({}<>)[[][]]]}([{{}<>}<[]()}]{[[][]][()<>]})})(([({[]{}}{[][]})
+({{<[[<<{{[{[<{}{}>{[]{}}]<([]{}){()[]}>}]<{([<><>]([]<>)){({}())({}<>)}}[[<{}<>>([]{})][[()[]]]]>}}>>]]
+[(<<<{([[[<{(<()<>>{<><>})(<[]<>>([][]))}[<[{}[]]>{<[]>(<><>)}]>([{{[]()}{[]()}}([<>[]][{}<>
+<[{[{{([<(<{{[{}<>]({}{})}{{<>[]}(()())}}(<<<>{}>(<><>)>(<<>{}>[[]<>]))>)>[{[<[[()<>]{{}<>
+{(<<[([<{<<<({()()}(<><>)}{((){})([]())}>>[<{<[]<>>{[]{}}}([()()])>]>}>]{{([{<{{[]<>}(<>)}<({}(
+((<[{(({([<{(<[][]>)[<<>{}><()<>>]}<{<{}{}>}[{()[]}<{}[]>]>>])})<[{[{([{[]()}((){})][<<>()><()()>])>]}][[({{[
+[[{([[<<[({[<<[]{}>{[][]}>(<()<>>[{}()])][([{}[]}[<><>]){[{}()]}]}[<<<{}<>>{()<>}>(<{}()>([]()))>{[[<><>][
+{{{<[([[{<[<{([]{}>{<>()}}{<(){}><()()>}>[{[[][]](<>())}[{[]<>}[<>[]]]]]{<{{{}[]}{<><>}}[[()()](<
+(([{(({[[[[{(<<>[]>((){})){<()<>><[]{}>}}{[{{}()}(()[])]((()){()<>})}]]]<[<<{(()[])<{}[]>}{
+{<<([(<([{{(<(()<>)[[][]]>{[[]{}]{(){}}})[{<(){}>[[]<>]}]}}])[[[([[{()()}{<>[]}]{[()]{[][]}}]<[((
+[{<<{<([(<[<{<{}[]>{{}[]}}(([]()))>{([(){}]<()[]>)(<[][]>{[]<>})}]>[{<<{<>()}[{}[]]>{(<><>)}>{[<[]<>>{()[]}]<
+<{{<{[[{{([({<()>{(){}}}((<>[])(<><>)))[(<[]<>>[()[]])<<()()>{<>{}}>]])<[{[{[]<>}{()()}][[{}{}]<[]>]}<{{{
+[(<[{([{({<<[<<>()>[[]()]]{<<>{}><{}<>>}><{<()()>{{}{}}}(({}<>)<()<>>)>>})({(([<{}<>>{[][]
+{(([{[<{{[({{[{}<>][()]}<{{}<>}>}(({<>[]})))]{((<[<>{}][<>[])>[[<>()]{[][]}]))<<<({}<>){{}<>}>(
+{[<{({((([[{[(<>{}){<>()}][([]{}}]}]{[<(()()){[]()}>((<>[])<(){}>)]}]){<(<<{{}<>}>>)([[{<><>}<
+{<{[(<{<[({<<[<><>]{()()}>[{()<>}<{}>]>[[<[]>][{()[]}{()}]]}(<(({}()){<><>})<(()())[<>()]>>{
+<[({[[{<([[{<{{}}>(<<><>>{[]()}}}[{{<>{}}<()<>>}{[[][]]{[]<>}}]]<((([][])<<>{}>)<((){})[{}()
+{{[{<[{<<{<<(<{}[]><(){}>)<{<>[]}[{}()]>>[{{[]<>}<()<>>}[{{}<>}(<>())]]><[(({}<>)({}<>))<<{}<>><<
+{<<({(<[(<[[{{[][]}{{}}}<[[]()]<<>())>]](<{{{}<>}{()<>}}>)>)]<(({{[[[][]]]}<[[(){}]<[]{}>]>}))>
+({{([<<{[(<<{{<>()}<[]()>}<{(){}}{{}{}}>><(<{}[]>{<>{}})<([]<>)([]())>>>)]}>>[[{<{[<<(<>{})
+<{({{({<<[{<<{<>}{{}[]}>>[[{[]<>}{()()}]<<[][]>(()())>]}]{<<{[(){}><<><>>}{{<>[]}(()<>)}>[<<(){}>[[]
+<({<([[[([({<{(){}}([][])>}<[{[][]}{<>()}]<[(){}][{}<>]>>){<({{}()}{[]{}})>{[{[]{})[()[]]]<[
+{([({[(([<{((({}()){{}<>})(<()[]>{()()})){[({}{})<<>[]>]([{}][()])}}>]{<<[<[[][]]{[][]}>({[]{}}<{}()>)
+<<{[<({[(<[({<{}{}><()()>})]{<<[<><>]>>}>){{[((<<><>><{}[]>)){<{[]()}(<>())>}]{{{({}<>){[]<>}}{{
+<<({<[{(([{({({}())(<>{})}{((){})})[<[[][]]([][])>]}<<[[<>{}][[]<>]]<([]<>)[()()]>><<<{}[]>(()())>>]])[[[
+[{<({<(({([([{[]}]<{[]()}[()<>]>]{{(()())<{}()>}{{[]()}<()<>>}}][{(<[]<>>[<>{}])[<[]<>><<><>>]}<(<<
+<{{((<<(<{({<{<>{}}[[]{}]>})[[{{[][]}{{}<>}}]]}[(([(()[])<()<>>]((<>[])<<>{}>))<[[<>()][<>
+{[([<<<({[{<<[<>{}]<[]<>>>>({<<>{}>((){})}<{[][]}{[]{}}>)}<{(([]{})<<>>><{{}()}(<><>)>}<{<[]
+<({[[{{{([(({[{}<>]{[]<>}}[{()<>}<(){}>])<[<{}()>[[]<>]]>)]{{[<{<>()}[{}()]><<<><>>{[][]}>]([[[][]](<>())
+[<<{{<[[{[<(<{()[]}[(){}]><[()[]]<<>{}>>)>[[[[[]{}]{[][]}]{<[]{}><(){}>}]({{<>()}<<>{}>}({()<>
+[<[[(<[[[[<<<{()<>}[[]()]>>{[[<>[]]{[]{}}]{[<>[]][[]<>]}}>]]({[({[<><>]<{}<>>}<<(){}>[{}()]>)[[<<>
+<{{({<([{({({{{}()}((){})})([([][])[[]<>]](([])[{}<>]))}<(([()<>][()[]])[<[]><{}{}>])<{({}<>)<<>()>}
+{<[[[([{[<<(({{}<>})(<{}()](<>{}))){[[<>[]]({}<>)]}><[((<>()){[][]})[({}())<{}<>>]]<({<>[]}{{}<>
+{<[<[({<({(<(({}[])<{}>)((<>[])({}<>))><(([][])(()()))>)})({{({{<>())}<{<>()}([]{})>)[[(()<>)<<>[]>](<<
+{(<(<<{{({{<{(<>[])[[]]}{(<>{})>>{<(()())[{}{}]>{{[]{}}{{}<>}}}}(<{[{}[]]<(){}>}[[{}{}]{()<>}]>([{<>{}}[<>]]
+[{[{{[[[{([<(({}{})<[][]>)<([]{})<<>{}>>>[{[[]{}]([]<>)}{(()())[<>[]]}}]((<([]<>)[()<>]>(<{}()>)){<[<>[]](
+{<<<<{(({<<({(()())(<>{})}<([][])[[]()]>)[{{[]()}(<>)}]><{[<<>()>]{<[]()>[[]<>]}}>>}>[(<<<[{()<>}{{}<>
+[{[(<[<{<[({[{[]<>}<[][]>]{{<>()}}}[({<>[]}{{}{}}){[[]<>](<><>)}])({({{}<>}<{}<>>)}<[((){})[{
+{<[[{[(((<({([[]<>](()<>))}[{{()<>}({}())}(<[]{}>{[]{}})])<<(({})[{}{}])[(<>{})<()>]>>>))<[{{<[{{}<>}[[][]
+[[<<([{<{((([<{}{}>(<><>)][({}[])])[[(<>{}){{}<>}](<()[]>[[]()])])[{({()}{{}{}})(({}())([]{}))}({[{}[]]{
+<<((<[<(([<{[<{}<>>][<{}{}>{{}[]}]}[{<<>()>[[]{}]}{[()[]]([]{})}]><{({()()}{[]})<{[]()}[{}{}]>}{((<>(
+({<<{[(({{<<{[[]()]{{}()}}{[<>{}]<[][]>}>{(([]())[<>[]]){<[]{}>{<><>}}}>{{{{<>[]}{{}()]}{{<>{}}[{}{}
+{((<<{<<<((<(({}{})(()))[[()()]{{}<>}]>{(<()[]][{}[]])[[<>[]]<<>>]}))>([[{({()[]}{()[]})(<[][]><{}{}>)}[[[[][
+[(<<{<[(<([<(<[]()><()()>)>]{({[<><>]{[][]}})}}<[([(()())[{}]]<<(){}>[<><>]>)][<<((){})>>[[{<><>}[{}()]][([]
+[<{[<[[(({{{[<{}[]><<>{}}][[{}<>]<<>()>]}{[{[]}[{}[]]]{[()[]]<{}<>>}}}[({<(){}>{{}{}}}<(()[])(
+<{([{(<[<<<<[[{}{}]([])](<{}{}>[[][]])>{{(()[]){<>[]}}<[<><>][(){}]>}>(([[{}{}]{{}<>}](<()()>))<<(<>{})<<
+[(<[[[[(({[<<<<>{}><<><>>>>]<{[{{}<>}<()>]{{[]{}}[<>[]]}}<<<()[]>([]<>)><(<>{}){[]()}>>>}))[[([{<
+[([(({<{([<[({{}{}}<{}{}>)[[[]{}]({}<>)]]<[([]<>)({}[])]{(()[]){[]<>}}>>{[<{[]<>}>{[()[]]<()<>>}][<([
+{<[<[[<[{({{<[[]()][{}()]>({()[]}(()[]))}([[<>()]])})}{{<{{[<>]<[]()>}{<{}[]]}}<{{()[]}<[]<>>}([()()]<{}()>)>
+[{{(<(([([((<{{}{}}({}())>{{<>[]}<[]{}>})([{<>()}{{}<>}]{<()<>>[{}{}]})>]{{[<(<>){[]{}}>{<<>[]>[()[]]}]
+[<<(({[[({({[{[]{}}<<>[]]]{[()()]<<>()>}}{[{<>[]}<()>]}){{<<()[]>{[]{}}><<<>>[[]()]>}}})<[{{[<
+<([{{{(<{{{<<({}()){(){})>{<{}{}>{<>()}}>{(<()[]>({}()))<({}())<()()>>}}[(({[]{}}[<>{}])([{}<>])){{{{}}(<
+<<{[{[[<([[<(<{}<>><()[]>)<{<>()>[<>()]>>]][{{{{()<>}<{}[]>}[<[]()>[()[]]]}<{[{}](<>{})}>}[<[[<><>]<
+[{[([{<<[([[{<<>[]>(<>())}((()())({}{}))>{[({}())<<>()>]<(<><>){()<>}>}]({([(){}]<[]<>>){<[
+[{<<[[<((({[<[[]()]>(<<>>(<>{}))]<<([]<>)[<>{}]>{<[][]>(<>())}>}(([{{}<>}{{}[]}]{[()[]]{{}{}}})<
+([<<{[([[<{<{({}())}{(()<>)}>[<[{}<>][[]()]><[<>{}]({}[])>]}<[([<>()]){[()<>]([]{})}][[[{}[]]][
+<{[[{({<{(<[[(()[])<<>[]>]<<<>()>{[]<>}>]>{[<(<>()){<>[]}>(([][]))]([<[]<>><{}{}>]([<>{}](()()
+{[([{{(([[<{<[{}<>]([]{})>[((){})<()[]>]}[[{{}<>}<[][]>]<{[]<>}([]())>]>{<{{{}<>}{(){}}]{{[]
+[{{<[([<{[[({[{}[]][(){}]}<{<>()}<[]{}>>)]<<({()<>}[[]()]){[<>[]]<()()>}>>]{[<<(<>[])<[]<>>
+<[{<[<((<({[{[{}[])(<>{})}(({}[])[<>])]})>[[([{((){})<<>>}])[<((()<>)[{}{}])[[(){}]]>{<<{}()>{
+({[[[[[[[<((<[<><>][()[]]><(<><>)>))>{{<(<<>[]>{{}})[[[]<>]({}())]><{{()<>>[[]<>]}[<{}{}>{<>{}}]>}[{<(<
+([([(<[{<[[{<{<>[]}>{{{}()]<{}()>}}<([{}()]{{}<>})[([][]){{}<>}]>]{<{{[]{}}{{}<>}}<[[]()]>>[[{()[]}{(){}}]{[
+{<{([([{<<<<{[<>()]<[]>}[[()<>]<()>]>>(([[<>[]][{}{}]])((([][]){<><>})([[]{}]<()<>})))><{<<[()()]<[]()>
+[{({[{[(([([{{{}<>}{()<>}}(([]<>){{}{}})][<{()}{{}{}}>(<<>()>[<>()])])]))<<<({((<>()){[]{}})[{
+([([(<(({<(<<<{}[]>){{<><>}[[]{}]}>[{{[][]}<<><>>}])<{<<[]>(()[])>[[{}()]<[]<>>]}{({[]()}[<><>]){{{}[]}[{
+{{[{<{((<((<<<(){}>>{([]{})[[]()]}>([({}{})]{<()>{[]{}}}))[[(<<><>>)]<<<{}{}><(){}>>[({}[])({}
+<{[({{<<((([[[(){}][{}<>]]<(<>[])<[]()>>]<[[{}()]({}())]>)({<[(){}]>{(<><>){[]{}}}})){{{<<[]()>[()<>]>[<
+(<[[(<((<[[<{[[]()][()<>]}<[[][]]<[][]>>>((({}())((){}))(<{}<>]{()()}))]]>[[{<{[{}<>]}>([[{}<>](()
+<<<{<(<[<{[[([<>()][()<>])(<<>()>[{}()])][<{<>()}>]]}<<<({<>[]}([]{}))<<(){}>>>[[({}())(())]]>{({({}[
+([<<<{<{({<[{(()<>)<()()>}]<[({}<>)]>>{[[{<>{}}(()[])](<<>>[[]<>])]}}{<<{<<>()>}><{{<>()}<<><>>}{<(){}>[(){
+{{(<<[{{({({({[]()}<{}()>)(([][])[()<>])}<{(<>())[()<>]}>)[[(([]<>)[[]<>])]]}[({[({}()){{}>]})
+<((((<{{{{{[{[(){}]([][])}[{<>{}}([]<>)]]([((){})]<[[][]][<><>]>)}}<(<{(()<>)([]{})}><([()<>]{<>()
+<{<{<(<(<<<(<[[][]]<<>()>><[<>[]][[]]>)[<[<>{}][<>()]>]>{<{(()){{}()}}[<{}<>><<><>>]>[{<{}[]><<><>>}]}>{(
+{[{<<(<([({{<<[]<>>[<>{}]>{<{}<>>([]<>)}}([<<>{}>((){})}<{<>[]}>)}<<({{}()})<(<>[])[[]]>>[[<<>[]>{()[]}][[[]
+<<<<[<{<[{{(<[<>]<[]{}>><(<>{}){{}()}>)[[{<>{}}{{}[]}](<[]>[<>{}])]}{{[{{}[]}(()<>)]<([]())(
+[([({[[{<{{<<{()()}<{}{}>>({{}{}}[{}{}]>>[{(<>{})<()()>}[[<>[]]<{}()>]]}[<<{<><>}(()[])>(<{}[]>
+[<<[[(({<[[([(<>[]){()[]}][(<><>)[<>[]]])]<({<{}{}>(()[])}[<{}<>>({}())])((({}{})<{}[]>)[{{}<>}{{}{}}])
+(({({[<<[<[([<<><>){[]{}}][<()<>><[]<>>])({[{}<>]<[]<>>}<({}{})[{}[]]>)][{((<><>)(()[]))}[<<{}()>{<>
+<((<[(<(<[[([{(){}}<<>()>]({(){}}{(){}}))]][{{[{[][]]{<>{}}]{[{}<>]([]{})}}}[<{[[]{}][<>()]}[(()[])<
+{((<<{({<[([(([]())([]()))(<[][]>{()})])<<[<<>[]>[<>())](<()<>><()()>)>>]>{{[{<[<>{}]<[]<>>>}<{{<><>}<
+{<<<<[((<{({<{<>[]}{<>()}><{<><>){<>()}>}([[[]()][(){}]]<<()<>>{<><>}>)){[{{<>[]}{[]()}}{(<>())
+({<<<<[{<{<{(<{}{}><()[]>)[{<>{}}]}>(<[([]{}){<><>}]{<<><>>[()[]]}}<[{()[]}{()[]}][{{}[]}{[][]}]>)}>}]
+({({{<{{{[<{{(<><>)}({[]()}{<><>})}{<[{}[]]<[]<>>>[(<>[]){()()}]}><[[<<>()><[][]>]]>]<<[{[[]()](
+<{[<([<[({([{(<>{}){()}}<([]<>)[{}{}]>)[[<()[]><{}<>>][(<>{})[()()]]]){<{({}){{}{}}}<{<>()}[[
+{((({[{<{[<({[{}()]({}{})}<(<>)(()())>)({[[]{}](<><>)}[<<>[]>[<>[]]])><<[{[]<>}][([][])<[]()>]>(
+({[((([<[(<{[(<>[])(()[])]}<[([][])([]<>)]<(()())>>>((([(){}])<(<>())<<><>>>)<[[()<>>{{}{}
+[{{((<{[(<{[{{[][]}{<><>}}[[()[]]<[][]>]]<<({}[])((){})>>}>[(<([[]()]<{}[]>)([{}<>])>({<<>[]>(<>[])}[(
+((<((<[<(<[{(<[]()>[()[]])((())(()[]))}{[[{}<>]([]{})]<[[]()]>}]>)><([<[<{[]<>}<{}[]>>[[(){}]]]({[[][]]{
+[(([([(([<<(<{<>}{[][]}>)[{[()<>]{{}{}}}({{}{}}<[]()>)]>>{([({<><>}<[]>){<{}{}>[()<>]}]<<[[]{}]{{
+[(<{<[[{[<<{<[[]<>]<[]()>>{{[]<>}}}><[[{{}()}([]<>)]][({{}<>}{{}{}})<[[][]](()())>]>><<({([]{})<<>{}>}){
+<{[<[(<<[[[[{<{}[]><[]<>>](<{}[]>{()[]})](<[<>()][[][]]>([()()]<<>()>))]]({([<()[]>[{}()]])<{[[]()]}{<[][
+<{{{([[([{{{<({}[])>}}<<({<>{}}{{}()))<({}{}){[]{}}>>[[(<>())[{}[]]]<<[]{}>{<>[]}>]>}([{[<<
+[{<(({{<[{[[([<>{}]{<>{}})(((){})[{}[]])][{<{}<>>}[([]{})<{}>]]]}{<<([<>{}][()[]})[{{}}<{}()>]>(
+[((<[{<<[<[{[{{}()}[{}[]]]<[<>[]][{}<>]>}]>]{[([([[]<>]{{}[]})[<(){}>[()[]]]]<<({}[])<[]()>>[(
+[{([<{([(({(<[[]<>]>{({}()){<><>}})([([]())[[]<>]])}(<[({}())(<>())]<{()<>}[[]<>]>>)){{([[<><>][()[]>](<[][]>
+<<(<<<{{{<<(<<[]<>>{<>()}>[<[]>])<{<{}<>>}{[{}{}]<<>[]>}>><{<<<>{}>({}<>)>}{([()[]]<<>()>)(<<><>><[]{}>)}>><
+{[<<[{{(<<[((({}{})[{}{}])(({}<>)[{}()]))]>{([[[(){}]<{}<>>][[{}[]]{()[]}]](<{[]{}}(<>[]>>))}>)}[(<
+<{{[[<[[[(((({<><>}{{}{}})<[<>()]([]())>)[<{{}<>}>{((){})[[][]]}]))<{<{[[]()]<[][]>}{<[]<>>(<>
+{<[<<([[[[{{<({}<>)<{}()>>[(<>())({}[])]}<{([][])({}<>)}>}(({[<>{}]{[]{}}}<(<>{})>)[<{[][]}{[][]}>{({}()){
+[[({{[(((({<{{<><>]}{(<><>){<><>}}>(<[()<>]<{}{}>>((<><>){<>[]}))}{<[[{}[]]([][])][{{}[]}[
+[{{<([((<<{(((<><>)<(){}>))((({}[]){<>()})(<{}()}({}{})))}><[<<{<>[]}[()<>]>{[<>{}]{[]()}}>{{
+[<{<{{({{<<<{[<><>]<[][]>}<<(){}>(<>)>>>([<{[]()}{{}[]}>{<{}()><[]<>>}]([([]())[[]]]([[]()]<<>{}>)))>
+<[{<[(<{{([[<[{}{}]><([]<>)(()())>][<((){})[[]()]>[([]<>){<><>}]]]{<{<[]<>><<>>}{<{}<>><[]{}
+{[((((((({([([(){}]([]<>)){[{}](<>[])}]{[<<>()>([]<>)]<<[][]>{[]<>}>})<<[{{}[]}(<><>)]<[()<>]
+([({(([[[([[((<>{}){{}{}}]{[()<>]((){})}]((({})(<>[])){[{}{}]<<>()>})]{({(())[<>{}]}((<>{})
+{<[<{(<[{<[{(<{}()>)[<<>[]>(()<>)]}([{()[]}<{}<>>])}(({<[]{}><{}{}>}([[]<>]{{}()})){[[{}<>]
+<<({[[<<[([(<[<><>]{<>{}}>{<(){}>(()())})<{[<>{}]<()[]>}>]<{[{<>{}}<<>()>]<{{}()}[()<>]>}<[[{}<>][{