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Day 10

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Lars Martens 2021-12-11 10:49:44 +01:00
parent 3ac09dfcbd
commit 51508d91c0
3 changed files with 213 additions and 0 deletions
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[({(<(())[]>[[{[]{<()<>>
[(()[<>])]({[<{<<[]>>(
{([(<{}[<>[]}>{[]{[(<()>
(((({<>}<{<{<>}{[]{[]{}
[[<[([]))<([[{}[[()]]]
[{[{({}]{}}([{[{{{}}([]
{<[[]]>}<{[{[{[]{()[[[]
[<(<(<(<{}))><([]([]()
<{([([[(<>()){}]>(<<{{
<{([{{}}[<[[[<>{}]]]>[]]

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<<{(({<{[<[{<<<><>>{[]()}>[[{}<>]{[]{}}]}<<<{}<>>[(){})>[[<>{}]]>]>]<{((((<>{})([]{}))[[<>
[({[(<[{<(({({[]<>}){({})<{}[]>}}{[{[]<>}{()[]}]((<>[]))})[({{{}()}([]{})}[[[][]]{{}<>}]){[({}<>)<[][]>]{[[
{<<[<<<<[[<[<<()><[]{}>>([<><>])][<[[]()]({})>{<<><>><<>()>}]>]<<{{<[]<>><<>>>(<{}[]>[[]<>])}{<(()<>)<{}()>
[({{{[((<[[{<(()<>){<>()}>}[[({}{})<(){}>]<([]{})>]]]((<((<>())<[]{}>)<<<>>[[][]]>>{[[<>{}][(
[{<([{[([<[{[<()[]>{[]{}}](<{}<>>(()[]))}({(<>())[()()]}{[{}<>]{<><>}})]({(([]{}){{}<>})})>[{([{[
<({[[[({[[[{({{}[]}<[]{}>){{{}[]}[[]()]}}<(<{}[]>[{}<>])(<()<>>[[]{}])>]{(<{{}<>}[<><>]>((<>())({}[])))<<<()
<((<([{([{<<<[()()]<{}[]>><([]<>)([]<>)>>(({[]()}<{}[]>)(<()[]>(()())))><[<[<>{}](<>[])>(<{}<>>{[]{}})]>}
(<(({{[<<[[((<{}[]>(<>{}))(<<>()>({}<>)))[<([]{})<{}[]>><{[]<>}>]](<<([]<>)[[]]>({()[]}[<>])>{([
<<((<<{[[(<{{[<>[]}([]{})}({[]<>}[()[]])}{[({}{}){[]<>}]<<()<>>{<><>}>}>{({{{}()}<[]<>>}<(<>[]){
({([(([({[((((()<>){[]<>>))[<{[]{}}[[][]]>[(<>{})<{}<>>]])([{[{}<>]}<(()<>){[]{}}>]<[{[]<>}<[]>]<{(
([{{({(([[[<{[()()]{{}()}}{{()<>}<{}()>}><((<><>)<()[]>)<[<><>][[]<>]>>]<{<([][])({}<>)><{<>[]}{<>}>}{(<{}{
{{([{[(<[[<{<{[][]}(())>([(){}]{[]<>})}[([[]{}]{[]{}}){(<>())<[]{}>}]>{{<[()[]]{{}{}}>}[(([]<>)<[]<>})]}]
[({{<([([[{([{<>[]}]<<()[]>>){[<(){}>[[]<>]][{{}<>}<<><>>]}}]<[[<[<>{}](<>{})>{{<>{}}<<>()>}]]
<(<<((<<{[{((({}[])[<>{}])[{()()}{[]<>}])}]}>[{{<[<[()()][[]{}]>[([]())<<>[]>]]{([[][]][{}()])(([]<>)(
<<[({{([([({[{()[]}[<><>]]{[<><>]({}<>)}})([<(<>())><{{}()}>][{<<>><[]()>}<({}{})({}<>)>])]
[[<((<[<{<<<(<{}()>{[][]}){<[]<>>({}{})}><<[(){}]{{}{}}>>>>}([{{{{()()}}}<([<>[]]<<>>]<{(){}}>
{<[[[(<<([{{[[{}[]>]}}])[[{<<<()<>>({}{})>(<{}{}><<>()>)>}]{[([(()[])[[][]]]<<<>{}><[]<>>>)<<{(){}}<
([[<<((<[(([<{()<>}<{}[]>><(()[])>]([<(){}><{}{}>](<<>[]><[][]>)))<{<(()[])>({<>{}})}{((()[]){[]{}
{<[([(<({(<(({{}[]}([]<>})(([]<>)[{}{}]))<(<<>[]><{}<>>)<({}{}){<><>}>>>)(<({((){})[{}{}]}<<<>()>[[]
{<[({(<{[[[[[<()<>>[[][]]]{[{}<>]{[]<>}}][([()[]]<()[]>)[<[][]>]]]](<({(()())[<><>]}<{<>}({}<>)
(<([[[[[(((<[{{}{}}{(){}})>))(({<<(){}>[{}()]>}<[(<>{})]([{}{}]<[]>)>)([{[{}()]<{}<>>}][<{<>{}}(<>{
{((<[(([{{[<<<[]{}>{()<>}>>({[{}<>]<{}<>>}(<<>[]><[]<>>))][[[[[][]]{{}()}][<[][]>]]]}<(<<{
<{[<{<<{<(((((<>[]][[][]]){[<><>]})(<([][])>)))([([{<>}(()[])]{(()<>)(()<>)}){{[{}{}]}}])>}>{[<<
<{((<<<[({[{[(()<>)((){})]}[{[<>{}]{{}{}}}(<{}()>(()<>))]]}(<{[[<>[]]](<()()><<>()>)})({<<[][]>[[]
(<[(<{(<[({[(<(){}>([][]))<(()())[<>{}]>]{<{()<>}<(){}>><{{}{}}({})>)}<<{{{}[]}(())}[({}())<
[{{[[{{<<([[([[][]](<><>))<{<>[]}<()[]>>]][<[[<>[]](<><>)]{[[]()]<{}()>}>[<([]{}}<{}()>>{(()()){<>()}}]]
[(<(<{{{[([(<{{}{}}<{}{}>>[[<>[]][(){}]])<(({}())[{}{}]>((()[])([]()))>])[(<{<{}{}>}>{{([][])([][]
[(<<{<(<(<(<<[()()]({}{}}>{([]{})[()<>]}>)>)><{({{(<<>[]>){(()[])({}())}}((<{}[]>{<>[]})([()<>][<
{{<<[(<{<{{([((){})[[]<>]]{([]{})([]()}})<[<{}<>>([]())]{<[]()>{{}[]}}>}{<{<[]{}>{()[]}}(<{}[]>[[]{}])>
<{[[{[({<[(({(<>{})[()[]]}{[()[]]<[]()>}))(([(<>[])<()()>])({<()[]>(()[])}))]<[[{{[]}(<>{})}[[()[]){[]<
(((([<{(({<<[{{}()}][{{}{}}<<><>>]>>((([<><>]<<>{}>)[(()())[<>[]]]))}{[<({()[]}[()[]])<([]())<{
(<<{[({[<((<[([]<>){(){}}]{<()()>[(){}]}>(<[{}[]][()<>]>{([][]){[][]}})){{{<()[]><<>()>}(({}<>)<[]{}>
<{[[[{[<({[{((()<>)(<>[]})<{()[]}{()<>}>}[{<<>()>[{}[]]}<[()()][[][]]>]]}{<[<{<>()}<[]<>>><[()[
([[{<{[{{{{(<<<>()>>[(())<[]>]){[[{})]<({}()){<>[]}>}}((<[<>]<{}()>>{[()()]<()()>}))}{[[{{{}<>
[(<({<{{<[{<[[<>{}]({}())]]}]{({{[<><>](()())}([{}])}[[<<>()>({}<>)]<[<>][[]()]>])[{[[()[]][<>]]}[
{([{<[<[{[(<<{<><>}[<>()]>(((){})(()()))>[<<{}()>[<>{})>]){<<<[]<>>[[]<>]>{{<>{}}{(){}}}>([[()()][{}[]]](<
{{(([<{[{<({<({})[[]<>]>([[]]<{}{}>)}([[()()]<{}{}>])){{{{[]<>}<[]<>>}<(<>())<<>()>>}}>}]}
(<[{{<({{(<([[[]<>]]{{{}()}([]<>)})<(([][]))>>{[{{(){}}<[][]>}[[()]<()()>]](({[]{}}(<>())))})(
({{[{{[{({[(<(<>{})<(){}>><<[]{}>[[][]]>)[((()[])(()<>))]]<([[(){}]{[]<>}]<<()[]>([]<>)>)>}[{[{[()<>]}<<
(<[<<<([{{{[<([][])<(){}>>{<<><>>(<><>)}]{((()<>)<{}{}>)[{<><>}<[]<>>]}}}(([<{{}{}}{<><>}>]{{[{}()
({[[((([[<<([{(){}}(<><>)](<{}{}>{[]{}}))(<<[]()>([])>([[]{}]({}{})))><{{[[][]]{[][]}}({()[]})}{(([]<>
({<<({<[[[[[{<()<>>}({<>()}[<>[]])]]]<{{[[{}()](()())]}({([]())})}>]<({<<{(){}}<{}{})>((()[
((<{[<{<{<[[[<[][]>{{}()}]][({<><>}{()[]})<<[]()>(()<>)>]][[(<{}{}>({}))(({}<>){[]()})][[{()[]}(()[])]{(<>
<<<[(<{<{<(<<[<><>](()[])>([[]<>]<[]{}>)>)((<{<>{}}[{}<>]>[{{}()}(()<>)])[{(<>{}){()()}}])><({{{<
<<<{[([[(({<<{<>{}}>[<<><>>(<><>)]><([[]()][{}<>])<[{}{}]>>})<<<[[{}<>](<>())><(()[]){<>()}>>([(
[{{[(<<({[{{(([]{}))[[{}()]<[]{}>]})(([{[]{}}<{}[]>]<<()[]>>)<({(){}}[[]()])<{<>()}[[]<>]>>)]}
(<[[[<[<{[[[{{()<>}[{}<>]}[(<><>)<<>{}>]]]<<[(()<>)<[]{}>]{{{}<>}(()())}><<{[]<>}[[]{}]><{<>{}}{<>{}}>>>][
(((({<(<[{<{<(<>{})(<><>)>{(<>[])[()[]>}}[[(<>[])({})](<{}[]><{}()>)]>(<<[[]<>]({}())>(({}{})<{}{}>)>
{(([<[[<({<[{({}())<<>()>}{[{}()]<()[]>}]>(([{(){}}{()[]}])(<[[]{}][{}()]>[({}{})<{}{}>])}}(<([{()[]
[{<{{({({{<({<<>[]>[()()]>[{[]{}}([]{})])([(<>())[[][]]]([{}()](()<>)))>(<({<>[]}{<>{}})>([(()[])]))}}
{{({({[{([[{[[()[]][[]{}]][{[]<>}(<>{})]}{{[()()][[]()]}[<<>[]>((){})]}]])}]}<{[[{[((<{}{}>[(){}]
[{[({[[(<<{{[(()<>){{}()}]}<([{}])({{}{}}{<>()})>}<[[[{}[]]<<>{}>][[{}[]]([]())]]>>((<({(){}}<[]>){<{}()>
[([[<<[{[(([[{<>{}}]]}){(([{<>[]}])[([(){}]{<>[]})({{}{}}[(){}])])}]}]({<[{<{[(){}]<()()>}([<
{[[[({[[{<({{({}[]]}<(()<>)>}[([[][]])({{}{}}[[]()])])><([{<<>[]><{}<>>}(({}<>))][({<>}({}<>))])(<{([][])[()[
([{<{{<(<[{<[(()[]){{}()}]{(()())[<><>]}>}(<<<()<>>{<><>}>[(()[]){()<>}]>[{{()()}<[][]>}])]>)(<<[
[<(<({[[[{({([<>[]]<()<>>)[{[]()}]})<[[[[]<>]<{}<>>]([()[]){[]()})]{([{}<>][<>[]])[{()()}([
([<[{[(<[{[(([<>[]]<<>[]>))][({(<>())({}<>)}<<()()>[{}()]>][[([][]){<>()}]({[]{}}<{}[]>)]]}
[(((<[{<{{([[[{}]<()<>>]<{()<>}([][])>]){(<{{}()}{{}{}}>(<<>{}>{{}<>})){{([][]}{{}<>}}[[[][]][[]<>]]}}}
[<[{([(<(<<{<(<>{})<{}<>>>{(<>)({}[])}}><([(<>()}[<>{}]][<{}{}>[<>[]]])[{([][])<[][]>}[({}<>)({}())]
[[<<([[{[{[<((<><>){{}<>})>(<({}<>)[()()]>[{(){}}])][[((<>{})<[]()>)(({}())({}<>))]<{<{}{}
({<(({<[([{(({()<>}[[]<>])<(<><>)>)}[{[<<>()>]<({}<>)[[]{}>>}(<<{}{}>[()()]>)]])(<({({{}<>})([[]<>](<>[]
<{{{({{{{{[([([]{})({}[])]{{[]()}<(){}>})]}[[<<{[]()}<[]<>>><<{}()>((){})>>](<{{{}[]}<<>>}<
((([<{<<(<<({[<><>]{{}{}}}[{()()}{[]}])(({()()}[{}<>])[({}())<()[]>])>([<<[]{}>{{}[]}>{[<>[]](())
((<(<[(<[[[({(<><>)[{}()]}{<(){}><{}()>})<<<[][]>{<>{}}><{{}[]}<()[]>>>]<[[[{}][[]{}]][({}{})((){})]]
[<<{[<<[{{[{<[()<>]>(<{}{}>(<><>))}<<((){})<(){}>>>]}[{(<[{}[]][{}[]]>((()<>)([]()))){{<(){}>
<{[<[{<{<{({<[{}()][[][]]>[{()<>}{[][]}]}<[([]<>)]>>}>[([{{<[]()><()[]>}{[<>{}]{[][]}}}(<[[]<>]
{<[<[(([<<({[({}())([]{})][{{}}{[]{}}]}[[<[][]>[{}[]]][[<>()]]])[[[<(){}>{()<>}]((<>{}){()[]})]]>>]{[{
{{[{<[[{([({[[<>[]]{[]()}][[<>()](()[])]}[[(<><>)[()<>]]<([]<>)<{}>>])]<(<{{[]<>}}>[{[{}{}]<
[{{{(({(<[{(<{<>[]}<[]<>>>)}([<[<>()]<<>[]>>{<()<>>(<>{})}]<<(<><>){(){}}]{[[]<>]{<><>}}>)]>)<{[
[[[(({<{(<<{{<<>><<>{}>}[((){})<{}[]>]}{([[]{}]<<><>>)[(<>{})]}>>[<{<{{}{}}[{}[]]>{<[]>[()
((<(({<[<[[(((<><>){{}{}})[{()[]}[{}<>]])({([][])<{}()>}<{{}()}({}[])>)]][{<({()()}{<><>})>([({}[])<<>
{{<{[([<({<[((()())<[]()>)<({}[])({}{}}>]<{({}{})<<>>}(([]{})[{}{}])>>[<[<()<>>]>((<<>{}>{()
<[{[[[<{[[<{[{<>()}][<(){}>[{}{}]]}((<[]{}>({}[])){(<>{})})>]]}>(((([<({()<>}<()>)[{{}()}<{
[(<{[[(({({<<[(){}]{[][]}><{[]{}}([][])>>({<{}()>{<>{}}}({{}<>}<{}<>>))})<{<<({}[])>{([]())[{}{}]}>[{
[<<{{<<<[(<[(([][])[<>[]])][<[()[]]<[][]>>]>)]{[<[{{[][])({}[])}<<<>()>(<>[])>](((<>{})<<>{}>)((<>[])
<<{<[{((<[([{<{}()><{}{}>}{[{}{}]({}())}]{{{<>[]}<{}[]>}<<<>[]>{[]<>}>})][{[{{()[]}{()()}}({<>{}}<{}
[(<{{[{[<{<[[{()<>}(())][{{}[]}{[]<>}]][((<><>)(<>()))(<(){}>)]>(<({[]<>}(<>()))((()<>)<[]>)>{<[{
<[(((([[{{[[({()()}((){}))]<<([]<>)[<>{}]>([{}{}]<<>{}>)>][{<[{}[]][[][]]>[<{}>[[]{}]]}{([
{{(({[[({[<([{<><>}[[][]]]{[<>{}](<>())})>({(<{}()>(<><>))((()())[{}[]])}<<<()><{}()>>>)]}<<(([[<>{}]{[]<
({([[<[{<{[[{{[]<>}({}{})}{<[]()>{()<>}}]]}([{<[[]()]{[]{}}>{[()<>]<(){}>}}])>}[(<[{<[<><>)><[{}{
[<[(<({<[<{[<[(){}](<>())>]([<[]<>><[][]>]<[[]<>]{{}{}}>)}>(((((()[])<{}{}>))([<(){}>[[][]]]
<({(<{[(<{([([[]()]{<>()})[({}[])(<><>)]]<({[][]}{[]()})({[][]}(<>{}))>)}>([([<(<><>)<[]()>>{[{}<>]{<>
(<<<[((<{[(({({}())<{}()>}{{{}[]}<<>{}>})<((()())[[]()]){[<>{}]}>)[{([{}()]{{}{}})[([]())[(){}]]}]]
[[<<<[(<[{((<[{}<>]{[]{}}><(<><>)([]<>)>)[<({}[])<[]()>>(<<>[]><{}[]>)]}[<<[[]{}][{}[]]>(([][
{<[[((({[[[(<[()[]][[][]]>(<[]()>({}())))]<{{[{}<>]<<>{}>}{(()<>){()}}}{(({}[]){<>[]}){({}{})<()[]>}}>}][[
{<{{{{<([([<{{<>()}<(){}>}[{{}}([]<>)]>[{({}())(()[])}]]<{<(<>())[{}[]]}{((){}){[]{}}}}(((<>)<[]()>)<
{<{{{{{({{({([[]<>])[<()<>>>})<({[[]()][{}[]]}({[]<>}[{}()]))[<<{}()><<><>>>{[()<>]{()}}]>}})}<[({<(<{[]()}{
(<{[[{{<[[<(({[]()}<[]>)<[{}()]([]{})>)(<([][])(()<>)>[[()()][()()]])>][[{{(())([]<>)}<{[]()}(()<>)>>](
[[<[{((<{[[(({[]<>}([]())))]{<{<<><>>[{}<>]){{[]()}<<>()>}><{<()()>{[]()}}<{[][]}[[][]]>>}]{<<([<
[[[<(<([(([{((()[])[[]<>]){{<>}{<><>}}}]))])>)>][(({([<([<(<()[]>{<>()})<{[]()}<(){}>>>[<{[]<>}>{{<>{}}<<>
[<(({{(<(<[<{[<>()]([][])}{{{}[]}{{}{})}>[([()<>]([]()))[{[][]}<<>()>]]](({[()<>]{{}<>}}<({})
(<<<<([{{[{{<{{}()}[<>[]]><{()()}[<><>]>}<[[{}()]{[]<>}]{({}[])({}[])}>}]({<({(){}}{<>()})([{}()][
({([{(<<[(({((<>())([]<>))[[[]()]<<>[])]}))]{<{{{{{}()}{[]<>}}}(<({}{})[{}[]]>)}>}>[{((<{((){})
((<[<{<(<[((((<>[])([]{}))[{{}{}}[<>[]]]}{[[[]<>]([]{})]{(<>[])[()()]}})<{{<{}()>[[]<>]}}>]>([{[[<<>{
<<(<{{<<<({[[([]()){[]}]{<<><>><()()>}][[[(){}]<<><>>]]}[{<[()[]]>{([]<>)}}{({()[]})}])(([{(()[]
<{[(<{[<((<[<([]())<()[]>>[({}<>)[[]{}]]]<(<{}{}>(<>{}))<({}{}){{}()}>>>[({([]())<{}()]})<<[()[]]{
{<[<[{<{[[{<<<()[]>{()}>{<{}<>>{<>}}>}{[[([]())]{([])]][(<()[]>(()())){[{}{}](()[])}]}]]}>(
{(((<[<<{{[[(<<>{}>(()<>))][({[]{}}<{}<>>)<[<>](<>[])>]]<{([[]]{(){}})((<><>)[{}])}[{({}<>}<{}[]>}{(<>())<
[[[[[<({(<{([{[]<>}[{}[]]][{[]{}}<{}{}>])[([{}[]]<[]()>)<<<>{}>>]}>)})<(({({(([]{}))}(<[<>()
[<{<(([(<<{<(([]<>)[<><>]){<()()>[<>{}]}>}({{({}[])([]<>)}})>><([(<[()()][[]()]><[[]<>]{[][]}>)(
[<(<(<{([<(<{<<><>>{<>()}}((<><>)[{}])>)((({()<>}({}())){([]{})([]{})})(<(<>{})([]())>))><<((<(
[<<[[{[{{<([({(){}}({}()))[[[][]]]])([([[]]({}())){({}())({}{})}]<[[<><>]<<>()>]{[<>{}]{()[]}}>)><({[[()()]((
{([{(([(({({{[(){}]([])}({<>()})}{<[(){}]<<>[]>><{[]<>}[[]()]>})}))<{{[[{[()[]]<<><>>}([[]()]([]()))]]{{<[[
{((([<[<[{{(((<>()>))[[<()()>]{([][])[{}()]}]}(([{()[]}<<><>>][<[]()>])(({{}{}}((){}))({<>()
{<(<<(<{([{{[[<>()]{{}<>}]<<<>[]>[[]{}]>}{([[][]][<>{}]){[{}()][(){}]}}}]}<{{{[<<>[]>(<>{})][[<><>]]}{
[<<([{<({([[({{}<>}<<>{}>)((()())<{}()>)]<{(<>{})}([()()]<[][]>)>])}{[[(<<[]{}>(()<>)>{[(){}]([][])})[((

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use std::collections::VecDeque;
type Line = VecDeque<char>;
fn main() {
let (score, incomplete_lines) = part1();
println!("First solution: {}", score);
println!("Second solution: {}", part2(incomplete_lines));
}
fn part1() -> (usize, Vec<Line>) {
let mut score = 0;
let mut input = input();
input.retain(|f| {
let mut stack = Vec::new();
let mut line = f.clone();
while let Some(next) = line.pop_front() {
if is_open(next) {
stack.push(next);
} else {
let popped = stack.pop().unwrap();
if !is_pair(popped, next) {
// This line is corrupted.
score += char_score_invalid(next);
return false;
}
}
}
true
});
(score, input)
}
fn part2(lines: Vec<Line>) -> usize {
let mut scores = Vec::new();
for mut line in lines {
let mut stack = Vec::new();
while let Some(next) = line.pop_front() {
if is_open(next) {
stack.push(next);
} else {
stack.pop();
}
}
let mut score = 0;
while let Some(next) = stack.pop() {
score *= 5;
score += char_score_incomplete(next);
}
scores.push(score);
}
scores.sort_unstable();
scores[scores.len() / 2]
}
fn is_open(c: char) -> bool {
matches!(c, '<' | '{' | '[' | '(')
}
fn is_pair(open: char, close: char) -> bool {
matches!(
(open, close),
('<', '>') | ('{', '}') | ('(', ')') | ('[', ']')
)
}
fn char_score_invalid(c: char) -> usize {
match c {
')' => 3,
']' => 57,
'}' => 1197,
'>' => 25137,
c => panic!("invalid char for score '{}'", c),
}
}
fn char_score_incomplete(c: char) -> usize {
match c {
'(' => 1,
'[' => 2,
'{' => 3,
'<' => 4,
c => panic!("invalid char for score '{}'", c),
}
}
fn input() -> Vec<Line> {
include_str!("../../input/10.txt")
.lines()
.map(|s| s.chars().collect())
.collect()
}