Day 10

Day10.cs

@@ -0,0 +1,43 @@
+#define Day10
+#if Day10
+var bracketScores = new Dictionary<char, int>() { { ')', 3 }, { ']', 57 }, { '}', 1197 }, { '>', 25137 } };
+var closingBracketExpect = new Dictionary<char, char>() { { ')', '(' }, { ']', '[' }, { '}', '{' }, { '>', '<' } };
+var openingBracketExpect = closingBracketExpect.ToDictionary(x => x.Value, y => y.Key);
+
+var completeScores = new Dictionary<char, int>() { {'(', 1}, {'[', 2}, {'{', 3}, {'<', 4} };
+
+var chunkScores = File.ReadAllLines("day10/input")
+    .Select(CheckChunk)
+    .ToList();
+
+Console.WriteLine(chunkScores.Select(x => x.score).Sum());
+
+int half = chunkScores.Count(x => x.score > 0) / 2;
+
+Console.WriteLine(
+    chunkScores
+        .Where(x => x.score == 0)
+        .Select(x => x.remaining)
+        .Select(x => x.Aggregate(0L, (score, c) => score * 5 + completeScores[c]))
+        .OrderBy(x => x)
+        .Skip(half).First());
+
+ChunkScoreAndRemaining CheckChunk(string line) {
+    var stack = new Stack<char>();
+    foreach (var b in line) {
+        if (openingBracketExpect.Keys.Contains(b)) {
+            stack.Push(b);
+        }
+        else {
+            char openingBracket = stack.Pop();
+            if (openingBracket != closingBracketExpect[b]) {
+                return new ChunkScoreAndRemaining(bracketScores[b], stack);
+            }
+        }
+    }
+
+    return new ChunkScoreAndRemaining(0, stack);
+}
+
+record ChunkScoreAndRemaining(long score, Stack<char> remaining);
+#endif

Day9.cs

@@ -1,4 +1,4 @@
-#define Day9
+// #define Day9
 #if Day9
 var linesSplit = File.ReadAllLines("day9/input")
     .ToList();

day10/input

@@ -0,0 +1,106 @@
+{{(([<((({<(<<[][]>({}[])>[(<>[])(<>{})])<<[<><>][<>()]><([]{}){<>()}>>>}){<[[{<[]()>}{((){})[<
+((<(<{{<({<<{[{}()]}(((){}){[]()})><[[()()]<(){}>]{<[][]>{[]<>}}>>}){(<<<<<>{}>>[([]())]>[<{{}()}[()]>{[{}
+[{[<(<(<{<{[((()[])[<>{}])][((()<>)[<><>])]}>([<{<{}{}>[{}<>]}[[[]<>]<()<>>>>{[(<>())(()[]
+(<{(<{<{<<<[[{[]{}}<()[]>]({[]<>}<(){}>)]>[{<[()()]<()<>>>({[]<>}<()[]>)}]>({[{(()){{}()}}
+{[<(<[[(([{{{([]{})[{}{}]}{([][])([]<>))}<<<()()>(()[])><[[]<>]{{}<>}>>}[<<({}())[<>[]]><[{}{}](<>
+<[(<{[<{([({<(()[])>([{}[]]{()()})}[[[[][]]((){})]{{{}{}}<()<>>}])[{{[{}[]]{[][]}}}{({[]()}(()<>))[<{}()
+[((<[(((({<{[([]<>)({})]<[[][]](()())>}([{[]}([]())](<{}>))><<[[<><>]<()()>]<<()[]>[<>{}]>>>}))(
+[{[(<<<<{<<<[{<><>}{(){}>](([]()))><([<>[]]{()()})[[<>[]]{()[]}]>>([[{()[]}{{}<>}]{<[]<>>{[]()}}]
+{[[[<([[{[[({{()<>}<()<>>}{(()<>)<<><>>})<[{(){}}(()<>)]{{<><>}<{}()>}>][([(()())[{}()]]<<<><>>
+[[[[{{<{<[<[{{[]{}){()()}}]{([(){}]<[]<>>){[{}()]}}>[{{<[][]>(()<>)}}{{<[]<>>{<>()}}([[][]][{}[]])}]]>}[[
+{{<({[([([<{{{[]()}(<>[])}({[]<>}({}<>))}{<<<>()>({}<>)>[[{}<>](<>())]}>][{<[[(){}](()<>)]
+[{([<<<[[({[<[<>[]]>{(()<>)([]())}]}]]{<<<<[[]][{}]><<[]()>{<>()}>><<(<><>)(()<>)>([{}<>]{{}()})>>>{{
+<<[<(({{[(<{{((){})([]<>)}({{}<>})}>[[<<{}<>><()<>>>(<()()>[[]()])]([[{}{}]{[]<>}])]){<{(<()[]>{<>()})<([]<>
+([({({[{{<(<([<><>]{{}[]})<{<>}({}())>><<{[]{}}<()>>{{<>()}({}{})}))>[[{{{<>()}{(){}}}{{<>[]}
+<({[[<[<{[<([[<>{}]<()[]>){{[]()}[<><>]}){<<()<>>{{}<>}><[{}{}]{{}[]}>}><[<<<><>><[]<>>>{{()()}<[]<>>}]
+[[{<([{(<[{{([<><>])[[{}()][()()]]}(({<><>}{{}{}})((<>())[{}[]])>}<(<[()()]>)<<<[]{}>[[]()]>[
+{[{((<({<{({{{[][]}{[]{}}}<{(){}}<[][]>>}{<<[]>[[]()]><[[][]]<(){}>>})(<[({}[])(()[])]<([]())
+<[{<{<<[[[([<[[]{}]{[]<>}>(({}{})((){}))]{((<>[])<<>[]>)<{()[]}<<>()>}})<<[[[]()][{}{}]]{({}<>)<<>{}>}
+{<{[[(<(({<({<{}()>({}{})}[{[]()}{<>()}))[<[[]<>](<>())>]>}){([{([{}<>]{()<>})((<>{})<()>)
+{[(([{{[({{[(([][])[()()]){{<>{}}}]({<<>()><<>()]}(<[][]>(<>[])))}<[([[]()]{(){}}){(<>{})[[]()]}]>}[{<[[<>{
+(([(<(<<{(([(<()><[]{}>){(<><>)[{}[]]}][([[]{}])(<[]()>[{}<>])]))[({<{[]()}>{{[]()}<()[]>}}[{
+{(<<<[[[<[<<<[<>[]]<[][]>><{<>{}}(<>)>>[{[()<>][{}[]]}{{<><>}<[]{}>}]>([[{[]()}][[()<>]([]())]]
+<(({{{<[{[([{{()()}[{}()]}<{(){}}[<>[]]>])[((({}[])<[][]>){[{}[]][{}<>]}){[<[]()>[<>{}]]([{}()]((){}))}]]<<{(
+<{{{(<[[<({{([<><>]){<[]<>><<>()>}}[[(()<>)<[]<>>]{([]())[(){}]}]})({([(()<>)[[]()}][{(){}}{<><>}])(((()()
+<{<[{<[{{({{<[()<>]<[][]>>}}{<<<<>>({}{})>[<[]<>>]>((<{}<>>{<><>})[{[]}[{}()]>)})}}]>[(<(<<<{([]{})({}<>)}(
+(<[[{[{[[{[[{<[]<>>(<>())}{[<>{}><(){}>}]<[<<>[]><[]()>]{[[][]]<{}{}>}>]{{{<<>()>{<>()}}}<<
+(<<{{[({({[[[({}()){(){}}]]{<{<>}<()<>>>(<{}()>[[][]])}]{{{{<><>}(<>)}{{(){}}[()()]}})}){(<<[([][])<[]{}>
+<({[<<{<<{{([<{}{}>{()[]}](<()<>><{}{}>))[{{{}<>}}<<<>[]>[{}{}]>]}[({<[]()>}{{{}[]}})]}>[<[<
+<{[(({{[(<[(({{}<>})((()<>)))(<{()()}[[]()]>)]><({{({}{})[<>]}([{}<>]{()[]})})>)(<(<<((){})[()<>]>{([]
+({<((<<(({([[[[]()]{{}<>}}([<>()]{{}[]})]<([<>{}]{<><>})>)[[{<[]<>>((){})}{([]())<{}<>>}][[<<>
+({{{[<{(<[({({[]()}{<>[]}){(()[])({}{})}])(<[(()<>)]>({<()>{{}{}}}<(()[])[()[]]>))]{{[(((){}){{}{}})
+{{{<{<{[((<{[<(){}><{}<>>]}>)}]}({{<((<<<>{}>>{<[]()>({}())})(<([])<[]{}>>{(<>())([][])})){<
+<{({{(<[[<({((<>{})[()()])(<()()>[<><>])})(<[{[]{}}<{}{}>]({[]{}}{[]<>})>(<[{}[]]{<>()}><{{}[]}((){})>))
+[(<[[(<([[({[{<>()}{[]<>}](<<>{}>[[]{}])}[{[{}<>]{()[]}}<<{}()>{<>()}>])[((<()<>>{[][]})<(<>()
+[{[<{{[({[(({[{}[]]<{}<>>}{([]<>)<[]{}>})[{[[]()]{[]()}}<[{}()]{<><>}>])([{{{}<>}{<><>}}({{}()}{<>[]}
+<[[<[((({([[({<>()}{<>[]})]{{<(){}>[()[]]}{<[][]>[(){}]}}])}{{((<<{}[]>([]{})><([]{})[<>()]>)){
+({<{<<(<{([(<[{}{}][{}[]]>)([([]()){<>[]}]<{()()}<()<>>>)])[<[[{{}{}}][{{}[]}{{}{}}]]{[<[][]><<>()>]<[{}()]{
+(({<<{<([{{{[<()<>>([][])]{(<>())<<>()>}}<[<<><>>]{<()[]>}>}{[{[{}{}][()()]}{<{}{}>{{}<>}}]{[{[
+{[{[<{(<{(<({((){}){<>[]}}([()<>]<{}<>>)){(<()[]><<>>)(<()<>><{}[]>)}>([(([]())[()[]])]<[<{}{}><()[])][
+({[{({((<<<(<<<>>>{{{}[]}<<><>>})>[([([]<>){{}[]}>{{()()}({}{})})[{({}{})(<>[])}]]>[(<({[][]})<[<>[]]
+[[{{<<(<[([{({()<>}[{}()])({<>()}<<>()>)}])][{([<<<>()>{[]{}}>]([[{}<>][<>[]]]({<><>}{()[]})))([[({})<
+[<{<({[<{[[[<<(){}>>{[()()](<>[])}]][(({[]{}}{()[]})){<{()<>}[[]{}]>({()()}(<>{}))}]]{<[<{[]{}}>](<[[]{}]{{}[
+<<[[<((<<[([([()[]]{[][]})({{}{}}{<>()})]<[{<><>}[<>()]]{[[]{}](()<>)}>)<<{<()<>>{[]()}}{{[]{}}[[]{
+{[[([([[{<[[[<()[]><{}>]{({}[])(<>{})}]<<(<>[]){[]<>}>[(<>{})(()<>)]>]({((()()){[]<>})[<[]{}><{}()>]}{{(()[
+[{{{([<(<(({{<()[]>{()()}}[<<>()>{{}()}]}<<([]<>)[<>()]>(<()<>>{<><>})>)({[{[][]}{[][]}]<<<>
+<(<(((<([{{(<{<>[]}[()[]]>[<{}{}><<>()>]){({<>}([]<>))<{{}<>}[()<>]>}}}(<([[[]<>]]((()<>){<><>})>[<{<>[]}[<>
+<<[<[[<(([({[{()()}<()[]]][{{}[]}<<>[]>]}[[[()<>]]([{}()]([]))])]{([[<[][]>[{}{}]]<({}{}){[][]}>])[<[[[][]](
+[({<{{{([[(({[<>[]]}{<<>()>[(){}]})[<[<>()][{}]>{(()())}]){{[{<>{}}]{[{}](()())}}{[[<>()][<><>]]}}]](<<[{{{
+{({{[[({<([{[<<>[]>]<<{}[]><[][]>>}({(()<>)<<><>>}[[{}<>][[][]]])]<[<{()}{<><>}>]({{[]<>}[{}()]}<({}(
+(<<<{(({[[(<<<<><>>{<><>}><<{}[]><[]>>>(<({}()){[]{}}>[{<><>}([]{})]))<<([{}()][[]{}))[<<>>[[]()]]>
+(<<({{<({<{<[[<><>]]<<<><>>[[]<>]>>(<{{}()}[()]><<(){}>(()<>)>)}[[<[[]()]<<><>>>[({}()){()[]}]][<[<>{}](()[
+([[({[[{([[{<([]{}){{}()}>{(<>[])}}[(([]{}){()()})]][<<([]{})([]())>>[((()<>))<(()<>)[[]<>]>
+([({{({{<{((<<()[]><<><>>><{{}[]>[<>[]]>)<({()<>}[<>{}])[{()[]}[[][]]]>)<([<()()>({}{})](<[]()>))<[[[]()]<(
+<<<<[(<({<[<[(()()){<>()}]<[<><>]{[]{}}>>]>([[{<()>{[][]}}](<[()[]]<<><>>>([<>()]<{}[]>))]{<{{<
+[[<{<([<(({{<<{}<>>>{<<>[]>(<>[])}}})[{[{<<>{}>(()[]]}]}])>][{(<<({[[][]]{{}<>}}<({}{})({}
+([<([<((<<<<({<><>}[<>[]]){{()()}(<>{})}><[({}<>)[()()]])>[<<[()]<<>[]>>>]>[([{{<><>}{{}{}}}([[]()]
+(<<<((<[(<({[{[]<>}[{}{}]]<(<>())[()<>]}})>)[{({[<()<>><{}{}>][[[]<>](<>[])]}[([()()](()[]))<({}{})(<>
+<(<[(({[(([<[[()<>]{<>{}}]((()[]){[]{}})><<({})(<>)}[[[]()][<>{}]]>]<{[<()><()()>]<<{}{}>[{}()]>}>
+<<[<{<<(({<<((<>{})[[]{}])[{()()}{[]<>}]>{((<>()))[{<>[]}]}>({<<[][]>(()())><<[]<>>{[]{}}>}<({()()}<{}
+<{{<([{[{<([([[]()]<[]>){[()[]][(){}]}]<[{{}()}[{}[]]]>)({[<{}<>>]((<>[])<{}{}>)>{({{}{}}({}<>)){{{
+{[{{(<[[(<[(((<>[])[()[]])([()()]<()<>>)){[{[][]}[<>{}]]}]><{<((()<>)(<><>))<<()<>>(()())>>{[<[]()>]{((){})<
+(((<<<[<<<<[(([]{})[[]()]){[(){}]}][{<<>()>{{}<>})<(<><>)([][])>]><{<[{}<>]{()[]}><<<><>>(
+[<([<(([([(<<[[]<>]>{<<>()><(){}>}>{{{<><>}]<{<>[]}{<><>}>}){[{[{}{}][[]()]}]<([{}()][()()]){([][])[()<>]}>}
+[[(<[([<[{(<[<{}()><{}[]>][({}[]){()<>}]>[{[[][]]<[]()>}<{()<>}(()[])>])[[{({}{})<()>}([{}<>][{}])]]}({({{[
+[<{{<{[[[<([<{[]{}}{[]{}}>{{{}()}([]{})}]]{[{<()()>[<>[]]}[[<>()][<>()]]]([<[]<>>(()[])]{({
+<(<(<({[{((([<[]<>>])<[({}{})(<><>)][[<>{}]<()[]>]>))}<{{<(([]<>){{}{}})>}<<({{}{}}({}())){[(){}]{<><>}}><(
+((<{<[<{([[[([[][]]{{}())){<{}{}><<>()>}]][[(([][])[()<>])]]])[<({((()<>){[]{}})[<{}><()[]>]
+[[{<[{((([<[(<()<>>){((){})(()())}]{[[{}{}][[]]]}>]((<{{<>[]}<<><>>}[[<><>]<{}[]}]>){[[[()]
+{[<<<[(<{[[[<{<><>}(<>{})><[[]{}]<()<>>>]{{[()[]]<[]<>)}[<()<>>(<><>)]}]]}>([[{({([]<>)}<[()<>]{(
+<<[<([[<{([(<([]{})[{}[]]><<()()>{()()}>)({[{}()]<<>()>}({[]}({}<>)))]){({<[<>[]]{<>()}>}){{{{()<>
+[([(<[[{[{[[<<{}()><{}<>>>(<()[]><()>)]][<{[(){}]{()()}}(<<><>>[[]{}])>]}](<<<(<{}[]><()()>)<{{}
+{[({([[<<[[[([(){}](()<>))]][(({{}()}([]))[{[]()}{[]{}}])<<({}<>)>(<[][]><(){}>)>]](<((<[]{
+(<(([(<<[([({{()<>}([][])}<([]{})>)<{<<>{}>}[<[][]><<>()>]>][(({()[]}[()[]]){{{}{}}{<>()}})[(({}[])<[]>)({()}
+{[<<{<((<{[({{[]}{()}}[[()()]{[]<>}])<<[()<>][()<>]>({<>()}<()[]])>](<{<()<>><()>}[[()()]]>)}<{[<[[][
+<[<{<{([({[<{({})[[]<>]}[(()<>)<<>()>]>[[{<>()}[()()]]<[{}{}]<<><>>>]]<{[{()[]}]{(<>{})([]<>)}}({[[]<>]<{}{
+{{<[{{<[[<{{{{<>()}{(){}}}(<[]>)}}[[<{[][]}{<>{}}>[(<>{})(<><>)]]([{()[]}((){})][{(){}><()[]>])]>]{([(
+{([({([<({{[[<{}{}>{<>{}}}([[]()]{(){}})](<{{}[]}[<>[]]>[{()()}(<>)])}[([<<><>>{[]()}]((<>()){()<>}))[<[<>[
+<({[({<<<[[{<<{}[]>{[]<>}><({}())(()[])}}([[{}[]][<>()]][<{}<>>])]]>>>}{([[(([[<<><>><<>()>]]{{({}[])
+[([[(<{[[<{(([[]<>])[{()()}[[]()]])}[<<<<>[]><()[]>>><[(<><>)[{}{}]]<[<>{}]<()[]>>>]>{(<<([][])[<>]>{(<>{})[
+{[(<{(([<[{({({}{}){()()}}<[<><>]<{}()>>){(({}[]]{{}<>}){([]{})}}}<[[({}<>)]{[[][]]<()<>>}][[[[]{}]{[]()}]]>
+[<(({[{{[{<(((<>{})<<><>>)<{[][]}>){(<[]()>{<>{}})[(<>[])[()<>]]}>[<(({}<>)[<>[]])[{<>[]}(()<>)]>({<[]<>>}[
+(<({<({([({[{{{}{}}(()<>)}<{<>()}(<>[])>][[{[][]}{<>{}}]{{()[]}{()<>}}]}{<({[]{}}<()<>>)>({({}())[{}()
+{{[<[{{<<[(<<<<>()>>([<>{}])>)([<{[]()}{[]{}}>][[(<>[]){[]{}}][<<>[]><()()>]]>][<<[{[]}({}())]{[<>{}]([
+<<<<{({[[[[[{<()<>>{{}<>}}{{[]{}}((){})}]{[{(){}}[[]{}]]{<<>()>(()())}}]<(<[()<>]{()}>[[[]<>](<>[])])(((
+{<[([<{<<<<{((<>{})<()()>){([]())[()[]]}}>><<<(<[]()>(<><>)){<<>[]><[][]>}>[[<()<>>(()<>)]
+[<(<([{{<<{<<({}())><<{}<>><{}<>>>>}{([[[][]]({}{})])}>><([[[{[][]}{<>()}]][([[][]][()[]])<<{}
+({(({(<{([{<[(()())<{}<>>]>[<(<>())[<>[]]><([]<>)[()<>]>]}][{(({<><>}([]())))}]>}[[{<{<[()()][<>{}]>{({}<>)}
+[{[<<<{(<[<({({}<>)}{{()<>}([]())})<(<()<>>[[][]]){<<>()>}]>]{(<[{(){}}<<>{}>]{{{}[]}<(){}>}>{[([][]
+(<{<[{<((([[{[{}[]][<>[]]]{[()()][{}{}]}]([<()[]>{<>{}}])])[(<{[<><>]{<>{}}}><<([][])>>){[{({}<>)<{}
+{({[<[([{[[[[([]()){{}<>}][<{}[]>{{}[]}]]([{{}{}}{{}[]}]<([]<>)>)]<([<[]()><(){}>](<()<>>(<>{})))>]
+{{{<<({(<[[{{[<>{}]}<({}<>)<[][]>>}(<{()()}[()<>]><{{}[]}[{}[]}>)](<{{<>()}<[][]>}>)][<(<<<>>([]())>)[{<<>()>
+[([[{[(({(<[{(<><>){{}<>}}{(<>[]){[][]}}]{(({}[]])(<[]{}>({}[]))}>[(<{<><>}{<>()}>[({}())<[][]>])[{<{}{}>
+{({{[<<{<<[<{{[]{}}([])}>([(<>{}]<{}<>>][<<>[]>{<>}])]{<[{(){}}{[]{}}]<<()<>>[{}]>>([{()()}<{}<>>
+{[{<[([<((([[(())[{}<>]]<<<>{}>{<>[]}>](([[]{}]{[]{}}){[()]})){<<[[]()][[]()]>(<<>{}>[()[]])><<<<>
+<[([[<{{([([(<[][]>[(){}])((()[])(<>))][[[[]<>][{}()]][<[][]>{<>()}]])<[[<()()>(()())}[<[][]>[()()]]]{<{[]{}}
+{(({(<{({[[({{<>()}[()()]}[{[]<>}[[]<>]])([({}{})<{}()>]((()<>){()()}))]][{<({{}()}(<><>))[<(){}><()[]>
+[{[[([[<[<[(<<[][]>[<>[]]>{(<><>)<[]<>>}){((()())[()]){[<>{}]<{}[]>}}]><[[{(()[])<()<>>}][[<<><>>
+[<({({<[[<[{{({}{})<<><>>}<{()[]}{[]<>}>}[[{()()}]<[()()){{}()}>]][[<[<>()][{}[]]>{[{}<>](<>{})}]{{(<>())(<
+(<(((({[[<<{<{()()}<<>[]>>}[([[]{}]<<>()>)]><[<[{}[]]{{}{}}>{<<>{}>{{}()}}]>>({({<(){}>({})}([()<>]{<><>}
+<{({<<(([<({[{[]()]]<[<>()]<<>{}>>})((<<[]<>>(<>{})>)[[[<>{}]([][])](({}{})<[]{}>)])>](<[({{()()}([]
+<[({[{[[[[[<[[<>()}([])]([()()]<<><>>)>[{{<>{}}[()]}{{<>[]}<<>{}>}]]{[<{()<>}([]<>)>({{}[]}<()[]>)]}]<
+[(({(<((({{[((()[]){(){}})([[]{}][{}()])]}<{{(<>()){[]()}}<([]())[()<>]>}<<(<><>)([][])>[{()[]}<<>[]>]>>}[{
+{([<{({[<{{{[[[]<>]]}(<([]<>)<<>{}>>({{}<>}(<><>)))}}>][{[<[{([]<>){<>{}}}(([][]){[][]})]>(({(<>{}){{}[]}}
+(<[([<{<(<([[{()<>}][{{}<>}(()())]]<([[]()]{[]<>})>)>[<<<<()<>>(()())>{{()<>}<<>{}>}><((<><>))>>({{{[
+<{([<[[{<<((<{{}()}<()()>>[<<>[]>{<>()}]]){({[{}](()<>)}<(()[])<()[]>>)[[[{}[]]({}[])]{{[][]}({}[]
+{{([[<(((([(([{}()][{}<>])<([]())>)[[[{}[]]([]{})]]]([[(()<>){<>[]}][[[]{}}<()[]>]]{[{{}[]}{