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aoc2021
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Philipp Matthias Schaefer 2021-12-22 11:33:30 +01:00
commit cd6cc0be1e
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include("utils.jl")
input_lines = non_empty_lines("1.data")
integers = map(s->parse(Int, s), input_lines)
"1"
zipped = zip(view(integers, 1:length(integers)-1), view(integers, 2:length(integers)))
result1 = mapreduce(t->t[1] < t[2], +, zipped)
"2"
zipped2 = zip(view(integers, 1:length(integers)-2), view(integers, 2:length(integers)-1), view(integers, 3:length(integers)))
summed = map(t->t[1]+t[2]+t[3], zipped2)
zipped_again = zip(view(summed, 1:length(summed)-1), view(summed, 2:length(summed)))
result2 = mapreduce(t->t[1] < t[2], +, zipped_again)

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

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using Pkg
Pkg.add("Match")
using Match
include("utils.jl")
function corrupt(line)
first, rest... = line
check = [first]
for char in rest
if char in "<{[("
push!(check, char)
else
match, score = @match char begin
'>' => ('<', 25137)
'}' => ('{', 1197)
']' => ('[', 57)
')' => ('(', 3)
end
if last(check) == match
pop!(check)
else
return score
end
end
end
0
end
function solution10_1()
sum(map(corrupt, non_empty_lines("10.data")))
end
function fix(line)
first, rest... = line
check = [first]
for char in rest
if char in "<{[("
push!(check, char)
else
pop!(check)
end
end
value = 0
for char in reverse(check)
value *= 5
value += @match char begin
'<' => 4
'{' => 3
'[' => 2
'(' => 1
end
end
value
end
function solution10_2()
values = sort(map(fix, filter(line->corrupt(line)==0, collect(non_empty_lines("10.data")))))
values[div(length(values), 2)+1]
end
solution10_2()

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

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7777838353
2217272478
3355318645
2242618113
7182468666
5441641111
4773862364
5717125521
7542127721
4576678341

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include("utils.jl")
function parse_input(filename)
map(x->parse.(Int, x), split.(non_empty_lines(filename), ""))
end
function flash(octopuses)
sum(map(CartesianIndices((2:11, 2:11))) do coord
if octopuses[coord] > 9
octopuses[coord] = -8
for neighbor in CartesianIndices((coord[1]-1:coord[1]+1, coord[2]-1:coord[2]+1))
octopuses[neighbor] += 1
end
1
else
0
end
end)
end
function solution11_1()
octopuses = transpose(reshape(reduce(vcat, [[fill(-2000000, 12)]; map(x -> [-2000000; x; -2000000], parse_input("11.data")); [fill(-2000000, 12)]]),(12,12)))
sum(map(1:100) do _
map!(x->x+1, octopuses, octopuses)
flashes = sum(collect(Iterators.takewhile(>(0), (flash(octopuses) for _ in 1:100))))
clamp!(octopuses, 0, 9)
flashes
end)
end
function solution11_2()
octopuses = transpose(reshape(reduce(vcat, [[fill(-2000000, 12)]; map(x -> [-2000000; x; -2000000], parse_input("11_ex.data")); [fill(-2000000, 12)]]),(12,12)))
for i in 1:1000
map!(x->x+1, octopuses, octopuses)
flashes = sum(collect(Iterators.takewhile(>(0), (flash(octopuses) for _ in 1:100))))
if flashes == 100
return i
end
clamp!(octopuses, 0, 9)
end
end
solution11_2()

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@ -0,0 +1,10 @@
5483143223
2745854711
5264556173
6141336146
6357385478
4167524645
2176841721
6882881134
4846848554
5283751526

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by-TW
start-TW
fw-end
QZ-end
JH-by
ka-start
ka-by
end-JH
QZ-cv
vg-TI
by-fw
QZ-by
JH-ka
JH-vg
vg-fw
TW-cv
QZ-vg
ka-TW
ka-QZ
JH-fw
vg-hu
cv-start
by-cv
ka-cv

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include("utils.jl")
function solution12_1()
lines = non_empty_lines("12.data")
adj_mat = Dict()
for line in lines
front, back = split(line, "-")
push!(get!(adj_mat, front, []), back)
push!(get!(adj_mat, back, []), front)
end
result = []
growing = [["start"]]
while length(growing) > 0
new = []
for path in growing
for neighbour in get(adj_mat, last(path), 0)
if Base.Unicode.isuppercase(neighbour[1])
push!(new, [path; neighbour])
else
if neighbour == "end"
push!(result, [path; neighbour])
else
if !(neighbour in path)
push!(new, [path; neighbour])
end
end
end
end
end
growing = new
end
length(result)
end
function small_twice(path)
length(filter(unique(path)) do element
Base.Unicode.islowercase(element[1]) && length(filter(==(element), path)) > 1
end) > 0
end
function solution12_2()
lines = non_empty_lines("12.data")
adj_mat = Dict()
for line in lines
front, back = split(line, "-")
push!(get!(adj_mat, front, []), back)
push!(get!(adj_mat, back, []), front)
end
result = []
growing = [["start"]]
while length(growing) > 0
new = []
for path in growing
for neighbour in get(adj_mat, last(path), 0)
if Base.Unicode.isuppercase(neighbour[1])
push!(new, [path; neighbour])
else
if neighbour == "end"
push!(result, [path; neighbour])
else
if neighbour != "start" && (!small_twice(path) || !(neighbour in path))
push!(new, [path; neighbour])
end
end
end
end
end
growing = new
end
length(result)
end
solution12_2()

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@ -0,0 +1,7 @@
start-A
start-b
A-c
A-b
b-d
A-end
b-end

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@ -0,0 +1,10 @@
dc-end
HN-start
start-kj
dc-start
dc-HN
LN-dc
HN-end
kj-sa
kj-HN
kj-dc

18
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@ -0,0 +1,18 @@
fs-end
he-DX
fs-he
start-DX
pj-DX
end-zg
zg-sl
zg-pj
pj-he
RW-he
fs-DX
pj-RW
zg-RW
start-pj
he-WI
zg-he
pj-fs
start-RW

972
13.data Normal file
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@ -0,0 +1,972 @@
587,795
930,267
306,240
1052,763
177,826
681,841
1062,413
840,878
232,271
965,165
319,612
1027,215
524,707
939,887
1210,740
284,126
579,38
1079,826
509,73
542,381
1163,560
1208,775
83,306
177,266
348,297
1001,729
621,162
1081,92
557,802
1039,87
1290,824
1096,513
1034,711
446,105
955,523
371,7
1039,759
246,556
321,143
1277,747
768,157
644,382
895,471
1285,252
751,87
237,30
1057,453
1119,747
1086,551
940,514
279,345
1064,879
1061,32
833,138
637,541
900,207
145,709
50,437
870,466
604,367
164,773
688,658
698,156
477,714
759,721
1233,354
808,382
669,121
1034,576
694,208
1210,224
67,756
1292,770
1124,371
1185,455
1016,549
957,226
641,87
559,795
229,840
446,287
706,576
542,466
753,502
1173,390
95,266
1081,840
271,87
858,821
1067,418
408,879
494,684
525,291
852,411
826,313
626,502
918,808
259,714
1133,266
567,79
1272,354
74,756
125,7
1026,380
812,509
465,390
1243,756
242,609
1251,665
264,796
945,82
25,535
378,823
1300,512
559,68
484,313
298,52
885,129
1016,345
140,819
750,467
485,805
1171,173
90,42
191,371
38,514
637,93
858,799
997,569
1017,162
939,455
999,876
909,444
557,392
751,387
408,422
378,631
1017,284
249,204
405,204
25,617
438,751
1087,497
343,218
903,614
1216,686
826,562
1078,175
139,721
919,732
765,35
977,312
999,533
1036,367
284,799
990,700
698,14
1064,472
689,823
184,645
102,551
567,815
547,359
1034,479
229,92
715,609
805,180
113,644
721,502
1063,112
460,464
1255,477
560,203
758,327
718,651
1304,131
1036,11
698,351
435,278
571,54
662,357
885,502
253,892
909,854
1078,7
241,606
724,539
181,185
1243,490
284,516
644,512
33,610
659,197
346,572
263,162
18,236
170,497
94,887
147,442
380,267
698,238
797,285
964,740
239,471
94,686
1066,687
547,87
898,285
1061,862
1198,466
999,894
49,411
1062,481
840,206
1064,422
430,551
50,661
1031,345
33,215
196,35
957,568
669,404
430,631
147,560
393,819
407,280
132,793
115,35
274,367
636,434
1052,656
90,852
845,60
83,364
1101,218
266,439
425,129
759,173
38,380
49,467
736,422
1163,442
361,162
276,711
805,308
544,591
602,194
1083,801
1091,278
636,770
1261,336
97,18
674,770
847,147
900,332
238,539
766,476
1046,89
908,786
557,502
864,329
1046,691
179,697
48,383
751,196
666,834
72,490
689,299
674,231
539,859
605,558
708,866
299,299
858,73
1197,644
684,842
682,175
376,551
1258,703
214,9
733,526
1295,309
452,768
554,446
1293,386
693,887
189,504
699,455
201,455
403,486
920,796
1091,168
626,842
684,54
328,233
663,730
237,854
231,703
1063,784
920,0
699,614
1144,131
309,165
410,780
1039,554
266,485
365,119
769,196
1022,1
208,789
1215,266
361,757
689,75
1305,413
226,516
1113,743
636,796
900,543
571,588
579,856
1304,2
1161,143
319,282
902,463
1108,73
416,84
513,285
97,17
1136,270
1220,490
417,406
1096,428
1044,455
801,821
151,595
965,505
120,655
875,168
838,187
346,154
1250,343
1215,826
64,86
865,116
994,158
473,165
141,285
264,89
1104,544
1272,211
567,472
592,719
1061,480
1109,439
888,243
739,54
1129,185
694,540
626,54
693,439
470,206
258,432
391,732
166,539
498,133
82,463
1258,143
715,161
1277,732
743,815
72,861
2,131
1227,306
1034,599
671,876
87,24
991,707
166,131
522,206
264,546
1001,521
917,523
517,837
800,635
704,717
219,535
801,73
715,665
1235,883
343,0
479,147
52,703
567,422
231,308
415,471
1078,427
356,842
731,11
768,381
577,368
865,218
1126,231
945,119
587,11
1227,364
74,138
586,847
334,642
1185,439
616,290
1243,138
1208,844
880,263
1242,439
1277,679
383,807
1213,18
905,592
1113,757
683,187
830,494
309,93
192,26
706,16
629,535
547,807
934,343
607,673
944,235
746,490
497,766
1063,614
38,113
0,661
1064,662
288,669
574,562
1046,805
689,519
1250,103
611,439
390,348
552,791
755,613
888,875
1268,514
1073,30
977,560
38,561
18,7
1034,556
967,632
1237,749
309,521
962,597
920,348
85,466
865,564
1260,457
758,50
1280,576
1046,98
1034,295
950,549
73,2
545,859
837,389
60,791
745,226
587,180
60,343
365,775
902,472
875,127
559,87
95,807
141,509
999,890
1067,476
893,304
656,681
13,404
745,369
64,808
430,263
219,168
939,7
724,47
467,61
95,826
1071,423
914,579
756,154
621,183
266,7
507,782
733,354
276,338
48,717
487,652
319,264
1272,540
348,533
1297,82
551,173
751,835
196,483
858,95
100,313
1119,579
423,835
818,121
320,357
580,586
1198,94
902,422
694,333
604,599
410,207
37,364
746,404
734,817
1180,187
1225,428
982,380
299,595
1216,467
1285,642
885,392
684,392
112,878
166,355
967,710
957,277
599,359
197,757
470,361
1066,780
718,670
1235,491
246,662
1059,408
664,357
735,700
1034,31
940,351
716,73
621,732
858,156
1144,539
446,271
341,878
833,502
686,634
440,542
488,579
735,252
1255,417
935,549
933,336
997,430
989,751
669,542
271,554
18,98
577,32
356,536
887,835
962,688
1036,627
38,540
1099,859
15,466
595,665
75,446
724,91
475,25
572,431
605,467
25,252
666,60
1215,59
736,332
1046,546
174,606
1173,504
32,259
1011,299
637,205
202,745
523,19
1200,303
284,380
33,162
693,7
706,437
1118,500
276,631
559,387
470,645
1099,35
1293,353
1262,791
416,450
999,18
1238,490
587,782
612,238
263,732
875,87
440,437
731,311
756,446
751,68
557,278
1136,830
1064,214
1061,690
202,149
984,661
648,357
1001,165
125,455
1001,93
554,313
1230,472
845,834
311,361
689,610
283,455
181,505
249,862
95,180
1215,852
1027,7
569,18
662,131
887,628
551,721
182,488
311,302
621,375
246,463
1118,394
423,628
10,508
100,581
652,579
246,15
864,271
1084,378
112,16
689,711
751,99
189,642
1009,326
191,579
954,392
812,761
232,7
922,485
671,38
560,691
805,514
1044,439
253,453
124,785
253,702
191,763
59,161
283,679
768,16
266,821
403,408
346,740
604,457
191,131
447,663
976,642
850,464
853,603
1073,854
80,562
244,207
326,233
621,711
530,745
758,485
763,359
239,696
785,603
223,497
177,290
930,303
440,430
294,549
1165,877
1297,404
835,679
219,278
156,385
853,743
982,233
1102,341
43,439
694,290
1307,473
1081,392
229,54
661,334
907,486
1186,540
661,560
939,280
252,672
214,162
708,194
1002,175
1063,280
298,502
1071,696
1140,397
102,396
808,158
407,782
1136,606
534,543
170,397
184,663
232,427
853,599
893,864
1051,714
90,490
999,4
25,502
490,667
577,592
67,138
1133,826
87,359
177,806
765,859
1133,806
130,187
1140,497
1108,745
289,231
20,16
1113,137
422,243
80,472
1176,618
864,105
945,812
490,227
1,560
736,562
266,551
422,651
38,686
888,651
107,87
510,572
1033,483
1290,518
33,519
261,819
1279,467
452,156
1119,131
18,434
232,175
13,352
15,224
232,691
422,208
1198,800
962,533
1292,460
1044,821
390,796
492,219
177,88
1198,513
1057,444
77,144
739,784
1128,406
612,156
606,717
569,876
617,7
780,574
991,264
544,303
38,290
915,547
308,175
505,751
244,780
639,38
1126,249
1046,446
991,282
651,473
110,418
182,406
1200,418
840,430
930,527
1026,462
48,791
572,15
803,452
1295,466
182,712
87,311
1285,617
396,763
629,54
822,579
763,127
812,133
863,663
52,303
1250,73
1073,864
716,567
838,707
214,885
797,385
403,535
370,516
1220,42
990,418
704,177
969,325
699,7
659,869
1278,259
616,208
370,351
460,430
962,297
758,844
1293,613
77,316
636,231
554,670
1268,156
80,332
756,448
67,404
73,749
283,215
246,879
1012,502
559,99
249,32
79,252
1033,336
1267,166
808,64
1186,785
1228,463
219,359
288,652
626,840
883,93
365,231
837,165
706,599
1129,505
1292,98
999,184
492,675
715,49
830,624
320,418
1131,334
820,331
179,334
932,631
147,452
1178,793
800,707
1081,205
1178,814
571,840
87,870
276,823
1,334
232,887
604,878
253,889
1064,108
840,533
542,878
609,218
1309,334
55,502
422,686
739,110
17,613
743,760
1215,135
371,280
858,126
786,187
43,166
887,266
1021,775
85,428
232,686
1293,281
258,686
177,628
559,196
1119,371
485,312
845,390
715,733
572,463
95,628
197,585
494,131
309,613
405,32
13,490
214,605
1078,271
1079,255
817,889
612,656
237,406
1186,428
80,422
651,25
465,642
940,516
793,57
1078,238
209,330
348,688
232,875
1034,71
83,82
1203,731
151,747
48,551
17,508
15,551
1192,287
375,345
900,351
552,485
1208,103
189,281
fold along x=655
fold along y=447
fold along x=327
fold along y=223
fold along x=163
fold along y=111
fold along x=81
fold along y=55
fold along x=40
fold along y=27
fold along y=13
fold along y=6

36
13.jl Normal file
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@ -0,0 +1,36 @@
include("utils.jl")
function parse_input(filename)
lines = collect(non_empty_lines(filename))
dots = map(l->parse.(Int, split(l,',')), filter(line->Base.Unicode.isnumeric(line[1]), lines))
folds = map(filter(line->!Base.Unicode.isnumeric(line[1]), lines)) do line
front, coord = split(line, '=')
'x' in front ? 1 : 2, parse(Int, coord)
end
sort(dots), folds
end
function solution13_2()
dots, folds = parse_input("13.data")
for (axis, coord) in folds
foreach(dots) do dot
if dot[axis] > coord
dot[axis] -= 2 * (dot[axis] - coord)
end
end
dots = sort(unique(dots))
end
for y in 0:5
for x in 0:38
if [x, y] in dots
print('#')
else
print(' ')
end
end
println("")
end
end
solution13_2()

21
13_ex.data Normal file
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@ -0,0 +1,21 @@
6,10
0,14
9,10
0,3
10,4
4,11
6,0
6,12
4,1
0,13
10,12
3,4
3,0
8,4
1,10
2,14
8,10
9,0
fold along y=7
fold along x=5

102
14.data Normal file
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@ -0,0 +1,102 @@
SCVHKHVSHPVCNBKBPVHV
SB -> B
HH -> P
VF -> N
BS -> S
NC -> C
BF -> H
BN -> H
SP -> H
BK -> H
FF -> N
VN -> B
FN -> C
FS -> S
PP -> F
ON -> H
FV -> F
KO -> F
PK -> H
VB -> S
HS -> B
NV -> O
PN -> S
VH -> B
OS -> P
BP -> H
OV -> B
HK -> S
NN -> K
SV -> C
PB -> F
SK -> F
FB -> S
NB -> K
HF -> P
FK -> K
KV -> P
PV -> F
BC -> S
FO -> N
HC -> F
CP -> B
KK -> F
PC -> S
HN -> O
SH -> H
CK -> P
CO -> F
HP -> K
PS -> C
KP -> F
OF -> K
KS -> F
NO -> V
CB -> K
NF -> N
SF -> F
SC -> P
FC -> V
BV -> B
SS -> O
KC -> K
FH -> C
OP -> C
CF -> K
VO -> V
VK -> H
KH -> O
NP -> V
NH -> O
NS -> V
BH -> C
CH -> S
CC -> F
CS -> P
SN -> F
BO -> S
NK -> S
OO -> P
VV -> F
FP -> V
OK -> C
SO -> H
KN -> P
HO -> O
PO -> H
VS -> N
PF -> N
CV -> F
BB -> H
VC -> H
HV -> B
CN -> S
OH -> K
KF -> K
HB -> S
OC -> H
KB -> P
OB -> C
VP -> C
PH -> K

59
14.jl Normal file
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@ -0,0 +1,59 @@
include("utils.jl")
function parse_input(filename)
template, rawrules... = collect(non_empty_lines(filename))
rules = Dict()
for rule in rawrules
front, back = split(rule, " -> ")
first, second = split(front, "")
rules[[first[1], second[1]]] = back[1]
end
pairs = Dict()
for i in 1:length(template)-1
get!(pairs, [template[i], template[i+1]], 0)
pairs[[template[i], template[i+1]]] += 1
end
pairs, rules, [first(template), last(template)]
end
function countpoly(pairs, singles)
result = Dict()
for (key, value) in pairs
get!(result, key[1], 0)
result[key[1]] += value
get!(result, key[2], 0)
result[key[2]] += value
end
for single in singles
result[single] += 1
end
for key in keys(result)
result[key] = div(result[key], 2)
end
result
end
function solution14_2()
pairs, rules, singles = parse_input("14.data")
steps = 40
for step in 1:steps
new = Dict()
for (key, value) in pairs
insert = get!(rules, key, nothing)
if typeof(insert) == Char
get!(new, [key[1], insert], 0)
new[[key[1], insert]] += value
get!(new, [insert, key[2]], 0)
new[[insert, key[2]]] += value
else
get!(new, key, 0)
new[key] += value
end
end
pairs = new
end
counts = sort(collect(values(countpoly(pairs, singles))))
last(counts) - first(counts)
end
solution14_2()

18
14_ex.data Normal file
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@ -0,0 +1,18 @@
NNCB
CH -> B
HH -> N
CB -> H
NH -> C
HB -> C
HC -> B
HN -> C
NN -> C
BH -> H
NC -> B
NB -> B
BN -> B
BB -> N
BC -> B
CC -> N
CN -> C

100
15.data Normal file
View File

@ -0,0 +1,100 @@
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5158499781719185191335698726337225419942769281296219215168381368296377583192114793345154114939919138
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5115948294552681116994961691838819122926817811428719719487293692225795236769313128246954783896581419
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5657182954384884192389177113923946799271142897712314759172399912237297817994565459889643847449996591
2114463882686822117918787199822775881529895139151499196692246274147217497821149527235387719991114714
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include("utils.jl")
function parse_input(filename)
map(x->parse.(Int, x), split.(non_empty_lines(filename), ""))
end
function search(entry_risk)
width, height = size(entry_risk)
total_risk = fill(typemax(Int64), width, height)
total_risk[1, 1] = 0
to_visit = [(CartesianIndex(1,2), 0), (CartesianIndex(2,1), 0)]
while length(to_visit) > 0
rounds += 1
coord, cost = popfirst!(to_visit)
cost += entry_risk[coord]
if cost < total_risk[coord]
total_risk[coord] = cost
if coord[1] > 1
push!(to_visit, (CartesianIndex(coord[1] - 1, coord[2]), cost))
end
if coord[1] < width
push!(to_visit, (CartesianIndex(coord[1] + 1, coord[2]), cost))
end
if coord[2] > 1
push!(to_visit, (CartesianIndex(coord[1], coord[2] - 1), cost))
end
if coord[2] < height
push!(to_visit, (CartesianIndex(coord[1], coord[2] + 1), cost))
end
end
end
total_risk[width, height]
end
function solution15_1()
entry_risk = parse_input("15.data")
width = length(entry_risk)
height = length(entry_risk[1])
entry_risk = transpose(reshape(reduce(vcat, entry_risk), height, width))
search(entry_risk)
end
function solution15_2()
entry_risk = parse_input("15.data")
width = length(entry_risk)
height = length(entry_risk[1])
entry_risk = map(entry_risk) do line
[line;
map(x->mod((x-1)+1, 9)+1, line);
map(x->mod((x-1)+2, 9)+1, line);
map(x->mod((x-1)+3, 9)+1, line);
map(x->mod((x-1)+4, 9)+1, line);
]
end
for _ in 1:(4*height)
push!(entry_risk, map(x->mod((x-1)+1, 9)+1, entry_risk[length(entry_risk) - (height - 1)]))
end
entry_risk = transpose(reshape(reduce(vcat, entry_risk), height*5, width*5))
search(entry_risk)
end
solution15_2()

10
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1163751742
1381373672
2136511328
3694931569
7463417111
1319128137
1359912421
3125421639
1293138521
2311944581

1
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

116
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using Pkg
Pkg.add("Match")
using Match
include("utils.jl")
function parse_input(filename)
reverse(collect(collect(non_empty_lines(filename))[1]))
end
mutable struct BinaryReader
input
rest
BinaryReader(input) = new(input, [])
end
function fill_rest(reader)
char = pop!(reader.input)
code = codepoint(char)
number = code < 0x3A ? code - 0x30 : code - (0x41 - 10)
reader.rest = reverse(parse.(Int, collect(string(number, base=2, pad=4))))
end
function read_bits(reader, count)
result = []
while length(result) < count
if length(reader.rest) == 0
fill_rest(reader)
end
push!(result, pop!(reader.rest))
end
result
end
function reader_length(reader)
length(reader.rest) + length(reader.input) * 4
end
function to_int(bits)
parse(Int, reduce(*, string.(bits)), base=2)
end
function parse_literal(reader, version)
result = []
cont = 1
while cont == 1
cont = read_bits(reader, 1)[1]
result = [result; read_bits(reader, 4)]
end
(version, 4, to_int(result))
end
function parse_operator(reader, version, type)
length_type = read_bits(reader, 1)[1]
subpackets = []
if length_type == 0
subpacket_bits = to_int(read_bits(reader, 15))
start_remaining = reader_length(reader)
while reader_length(reader) + subpacket_bits > start_remaining
push!(subpackets, parse_packet(reader))
end
else
subpacket_count = to_int(read_bits(reader, 11))
for _ in 1:subpacket_count
push!(subpackets, parse_packet(reader))
end
end
(version, type, subpackets)
end
function parse_packet(reader)
version = to_int(read_bits(reader, 3))
type = to_int(read_bits(reader, 3))
if type == 4
parse_literal(reader, version)
else
parse_operator(reader, version, type)
end
end
function sum_versions(packet)
result = packet[1]
if packet[2] != 4
result += reduce(+, sum_versions.(packet[3]))
end
result
end
function solution16_1()
input = parse_input("16.data")
reader = BinaryReader(input)
packet = parse_packet(reader)
sum_versions(packet)
end
function value(packet)
@match packet[2] begin
0 => reduce(+, value.(packet[3]))
1 => reduce(*, value.(packet[3]))
2 => reduce(min, value.(packet[3]))
3 => reduce(max, value.(packet[3]))
4 => packet[3]
5 => value(packet[3][1]) > value(packet[3][2]) ? 1 : 0
6 => value(packet[3][1]) < value(packet[3][2]) ? 1 : 0
7 => value(packet[3][1]) == value(packet[3][2]) ? 1 : 0
end
end
function solution16_2()
input = parse_input("16.data")
reader = BinaryReader(input)
packet = parse_packet(reader)
value(packet)
end
solution16_2()

1
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D2FE28

1
16_ex_2.data Normal file
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@ -0,0 +1 @@
38006F45291200

16
16_ex_3.data Normal file
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@ -0,0 +1,16 @@
9C0141080250320F1802104A08
9C005AC2F8F0
F600BC2D8F
D8005AC2A8F0
CE00C43D881120
880086C3E88112
04005AC33890
C200B40A82
A0016C880162017C3686B18A3D4780
C0015000016115A2E0802F182340
620080001611562C8802118E34
8A004A801A8002F478
EE00D40C823060

1
17.data Normal file
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@ -0,0 +1 @@
target area: x=153..199, y=-114..-75

54
17.jl Normal file
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@ -0,0 +1,54 @@
include("utils.jl")
function parse_input(filename)
line = collect(non_empty_lines(filename))[1]
println(line)
map(x->parse(Int, x.match), eachmatch(r"-?[0-9]+", line))
end
function inverse_gauss(x)
sqrt(1/4 + 2 * x) - 1/2
end
function valid_x_velocities(left, right)
Int64(ceil(inverse_gauss(left))):Int64(floor(inverse_gauss(right)))
end
function hitp(left, right, bottom, top, vel)
pos = [0, 0]
mpos = [0, 0]
velocity = copy(vel)
while pos[2] > bottom
pos += velocity
mpos = max(pos, mpos)
velocity[1] = velocity[1] > 0 ? velocity[1] - 1 : 0
velocity[2] -= 1
if pos[1] >= left && pos[1] <= right && pos[2] >= bottom && pos[2] <= top
return true, mpos[2], vel
end
end
false, mpos[2], vel
end
function solution17_1()
left, right, bottom, top = parse_input("17.data")
for vx in valid_x_velocities(left, right)
shots = map(v->hitp(left, right, bottom, top, v), [[vx, vy] for vy in 1:10000])
hits = collect(Iterators.filter(x->x[1], shots))
println(last(sort(hits, by=x->x[2])))
end
end
function solution17_2()
left, right, bottom, top = parse_input("17.data")
sum = 0
for vx in 1:right
shots = map(v->hitp(left, right, bottom, top, v), [[vx, vy] for vy in bottom:1000])
hits = collect(map(x->x[3], Iterators.filter(x->x[1], shots)))
sum += length(hits)
end
sum
end
solution17_2()

1
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@ -0,0 +1 @@
target area: x=20..30, y=-10..-5

100
18.data Normal file
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@ -0,0 +1,100 @@
[[[[8,1],8],[[8,1],0]],[[8,[2,4]],[0,8]]]
[[[[2,2],[7,4]],[[9,1],6]],8]
[[[3,6],[[8,7],[2,9]]],[8,[[2,3],9]]]
[[[[4,5],[1,4]],1],[[0,8],[2,[6,8]]]]
[[7,[[4,6],[0,0]]],[[4,3],5]]
[[[[8,4],4],[[4,4],[1,0]]],[[5,[5,5]],[[5,2],1]]]
[[[0,[5,8]],[1,7]],[[[5,0],[1,3]],7]]
[4,[[[6,2],[7,8]],[0,[4,4]]]]
[[[3,[5,3]],8],[[[6,8],4],[8,9]]]
[[[6,0],[9,[8,1]]],[[[9,7],3],0]]
[[9,[[9,3],[0,8]]],[[[5,3],0],[[5,6],2]]]
[[3,[[7,7],3]],[[7,[5,2]],[[6,9],0]]]
[1,[4,[3,8]]]
[[[[0,2],9],[[0,7],8]],[[5,4],[2,8]]]
[[[[1,8],9],[1,7]],[[4,[8,5]],[[6,3],[1,0]]]]
[[9,[[4,3],[3,3]]],[[[4,9],[0,9]],6]]
[7,[[8,0],[5,6]]]
[[[[3,2],1],[[4,9],6]],[[9,[1,1]],[[8,7],1]]]
[[[[5,1],[3,3]],0],[1,[[3,2],2]]]
[[7,9],[[9,9],[5,[9,5]]]]
[[[[4,3],[1,7]],[4,[9,2]]],[[6,[1,7]],[[8,0],3]]]
[[[5,[2,8]],[[1,2],7]],[[3,[0,5]],[[3,5],8]]]
[[[[2,2],6],[[2,1],7]],[[[4,6],8],7]]
[[2,[[3,0],[0,5]]],[[[3,4],[0,1]],0]]
[[[[9,9],5],[[9,9],6]],[[[4,1],2],0]]
[4,[[2,9],[6,2]]]
[[[8,6],6],7]
[[7,[8,2]],[[[5,5],6],[9,0]]]
[5,[[2,5],[[4,9],[8,6]]]]
[[4,[7,[9,6]]],7]
[[[9,[3,3]],[[3,1],[8,7]]],[[6,[3,5]],[4,1]]]
[[8,6],[8,[[0,2],[8,1]]]]
[6,[8,[[7,7],0]]]
[3,4]
[[9,[8,0]],[[[7,8],3],1]]
[5,[[3,[8,7]],[[5,0],[9,7]]]]
[[[[4,2],9],[6,[0,2]]],6]
[[4,[3,[4,9]]],[[4,[1,6]],1]]
[[[6,3],[8,8]],[5,[[9,3],[6,3]]]]
[[[9,9],[[7,1],6]],[[[1,0],[7,4]],[3,[2,0]]]]
[[[[2,5],9],[3,[6,2]]],[4,7]]
[[1,[7,8]],[[[0,1],8],[[1,1],9]]]
[[[9,[6,4]],[[9,8],[0,2]]],[[[8,9],[2,3]],[3,[8,0]]]]
[[[[6,8],2],3],[[2,2],5]]
[[[4,[8,5]],[[4,3],1]],[[[2,4],[4,4]],[[4,1],[1,7]]]]
[[[[2,6],6],[[9,2],4]],[[[9,9],[9,5]],5]]
[[[[7,5],[4,9]],4],[[[0,7],[3,6]],[[6,5],[3,0]]]]
[[[4,4],[[5,7],[8,5]]],[0,8]]
[[3,[[1,3],[7,5]]],[6,[[8,1],0]]]
[[[9,9],[5,[9,6]]],[[[4,0],[5,4]],6]]
[0,[[[9,2],4],3]]
[[[1,[8,5]],[0,[6,0]]],[[[6,5],[3,1]],[[6,2],[1,5]]]]
[[[4,0],[4,7]],6]
[1,[[[5,2],9],[[3,9],4]]]
[[[[9,6],[4,1]],4],[2,[[0,2],6]]]
[9,[[[1,5],[3,1]],1]]
[5,0]
[9,[[[7,5],[2,1]],[[2,3],[5,3]]]]
[[5,[[0,5],[9,5]]],[[[2,7],3],[[2,9],[3,5]]]]
[[[1,9],2],[[7,[1,7]],[8,[9,8]]]]
[[8,9],[[5,[9,0]],[[6,8],[5,2]]]]
[6,[[[1,3],[0,8]],4]]
[[[[9,8],[0,9]],[[8,4],[3,5]]],[[[5,0],8],[[6,8],1]]]
[[6,[[1,4],[7,0]]],[[3,4],[[2,1],[2,7]]]]
[[[5,0],[3,[4,7]]],[[9,3],[[9,4],[9,6]]]]
[[[[8,3],[8,0]],5],[[[5,5],[0,2]],[[0,1],9]]]
[[[[6,4],[1,8]],[3,[0,2]]],[8,[[8,8],5]]]
[2,[[2,1],[1,4]]]
[8,[0,[3,5]]]
[[[[0,2],3],[[4,9],[1,2]]],[[8,2],[6,[7,1]]]]
[[[0,0],9],1]
[8,[[4,1],[[1,3],9]]]
[[[8,[5,9]],9],[[[5,7],[9,0]],3]]
[[5,[2,9]],7]
[5,6]
[[[[7,5],[8,3]],[[4,3],8]],[[2,2],[[7,2],[4,2]]]]
[[[9,5],[3,[1,5]]],6]
[[[[7,4],[7,9]],[[3,1],[3,1]]],[[[6,4],[0,1]],1]]
[[3,[[7,4],9]],[[[5,8],[2,7]],[[0,4],[3,6]]]]
[[[3,[2,3]],[[6,0],[7,7]]],1]
[[2,[[8,8],[2,3]]],[5,2]]
[[[0,[5,5]],[8,1]],5]
[[3,9],[6,[[0,5],[1,7]]]]
[[[[3,0],9],[8,2]],[[[2,2],8],0]]
[[[9,6],[[5,1],[4,9]]],[[[1,1],[0,3]],[[4,9],[7,5]]]]
[[[2,[6,1]],[[5,7],[9,2]]],[[[4,2],8],9]]
[[9,[7,1]],[[4,5],[9,1]]]
[[9,[5,0]],[[1,7],[[9,6],[4,5]]]]
[[[[1,1],[8,7]],4],[[0,4],[[1,7],[3,5]]]]
[[5,[1,[8,4]]],[[[9,4],0],[1,[5,5]]]]
[[[5,[1,6]],[6,0]],[[0,[9,7]],1]]
[2,[9,[[0,3],[2,3]]]]
[3,[4,[[0,9],8]]]
[[5,6],[[[9,9],[4,0]],[7,[2,0]]]]
[[[[5,1],6],[[1,0],[7,1]]],[[6,[1,0]],[[4,2],[0,0]]]]
[[[4,[0,2]],6],[[[4,3],[8,0]],[[9,6],[1,5]]]]
[[[[5,3],[2,2]],[8,[8,3]]],[[9,1],2]]
[[3,4],[[[4,7],[2,3]],[9,[9,0]]]]
[[[5,[6,2]],[[1,5],[9,2]]],[[[7,9],3],[[6,7],[6,2]]]]
[[[5,3],9],[[2,[4,3]],[[5,3],1]]]

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include("utils.jl")
function parse_value(line, index)
if line[index] == '['
parse_tuple(line, index)
else
digits = match(r"^[0-9]+", SubString(line, index)).match
index += length(digits)
parse(Int, digits), index
end
end
function parse_tuple(line, index=1)
@assert line[index] == '['
index += 1
first, index = parse_value(line, index)
@assert line[index] == ','
index += 1
second, index = parse_value(line, index)
@assert line[index] == ']'
index +=1
return Any[first, second], index
end
function parse_input(filename)
map(x->x[1], map(parse_tuple, non_empty_lines(filename)))
end
function split_sf(a)
if typeof(a) == Int64
if a > 9
Any[div(a,2),div(a,2)+rem(a,2)], true
else
a, false
end
else
l, changed = split_sf(a[1])
a[1] = l
if changed
a, true
else
r, changed = split_sf(a[2])
a[2] = r
a, changed
end
end
end
function add_left_sf(a, number)
if typeof(a) == Int64
a + number
else
a[1] = add_left_sf(a[1], number)
a
end
end
function add_right_sf(a, number)
if typeof(a) == Int64
a + number
else
a[2] = add_right_sf(a[2], number)
a
end
end
function explode_sf(a, level=1)
if typeof(a) == Int64
return a, false, 0, 0
end
if level == 5
@assert typeof(a[1]) == Int64 && typeof(a[2]) == Int64
0, true, a[1], a[2]
else
l, changed, to_left, to_right = explode_sf(a[1], level + 1)
if changed
Any[l, add_left_sf(a[2], to_right)], true, to_left, 0
else
r, changed, to_left, to_right = explode_sf(a[2], level + 1)
if changed
Any[add_right_sf(l, to_left), r], true, 0, to_right
else
a, false, 0, 0
end
end
end
end
function reduce_sf(a)
changed = true
while changed
a, changed = explode_sf(a)
if changed
continue
end
a, changed = split_sf(a)
end
a
end
function add_sf(a, b)
reduce_sf(Any[deepcopy(a), deepcopy(b)])
end
function mag_sf(a)
if typeof(a) == Int64
a
else
3 * mag_sf(a[1]) + 2 * mag_sf(a[2])
end
end
function solution18_1()
mag_sf(reduce(add_sf, parse_input("18.data")))
end
function solution18_2()
input = collect(parse_input("18.data"))
max_mag = 0
for a in input
for b in input
print('.')
max_mag = max(max_mag, mag_sf(add_sf(a, b)))
end
end
println("")
max_mag
end
solution18_2()

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[[[0,[5,8]],[[1,7],[9,6]]],[[4,[1,2]],[[1,4],2]]]
[[[5,[2,8]],4],[5,[[9,9],0]]]
[6,[[[6,2],[5,6]],[[7,6],[4,7]]]]
[[[6,[0,7]],[0,9]],[4,[9,[9,0]]]]
[[[7,[6,4]],[3,[1,3]]],[[[5,5],1],9]]
[[6,[[7,3],[3,2]]],[[[3,8],[5,7]],4]]
[[[[5,4],[7,7]],8],[[8,3],8]]
[[9,3],[[9,9],[6,[4,9]]]]
[[2,[[7,7],7]],[[5,8],[[9,3],[0,2]]]]
[[[[5,2],5],[8,[3,7]]],[[5,[7,5]],[4,4]]]

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include("utils.jl")
function parse_input(filename)
scanners = []
current = []
for line in non_empty_lines(filename)
if line[1] == '-' && line[2] == '-'
push!(scanners, current)
current = []
else
coord = collect(map(m->parse(Int, m.match), eachmatch(r"-?[0-9]+", line)))
push!(current, coord)
end
end
push!(scanners, current)
scanners[2:length(scanners)]
end
transforms = [
# up: z
a -> a,
a -> [-a[2], a[1], a[3]],
a -> [-a[1], -a[2], a[3]],
a -> [a[2], -a[1], a[3]],
# up: -z
a -> [-a[1], a[2], -a[3]],
a -> [a[2], a[1], -a[3]],
a -> [a[1], -a[2], -a[3]],
a -> [-a[2], -a[1], -a[3]],
# up: x
a -> [-a[3], a[2], a[1]],
a -> [a[2], a[3], a[1]],
a -> [a[3], -a[2], a[1]],
a -> [-a[2], -a[3], a[1]],
# up: -x
a -> [a[3], a[2], -a[1]],
a -> [-a[2], a[3], -a[1]],
a -> [-a[3], -a[2], -a[1]],
a -> [a[2], -a[3], -a[1]],
# up: y
a -> [a[1], -a[3], a[2]],
a -> [-a[3], -a[1], a[2]],
a -> [-a[1], a[3], a[2]],
a -> [a[3], a[1], a[2]],
# up: -y
a -> [a[1], a[3], -a[2]],
a -> [-a[3], a[1], -a[2]],
a -> [-a[1], -a[3], -a[2]],
a -> [a[3], -a[1], -a[2]],
]
function try_match(a, b)
for c in a
for d in b
t = c - d
if length(intersect(a, map(x->x+t, b))) > 11
println("pos $t")
#println(intersect(a, map(x->x+t, b)))
return true, collect(map(x->x+t, b))
end
end
end
false, nothing
end
function find_match(fixed, scanners)
for (f,j) in fixed
for i in 1:length(scanners)
s,k = scanners[i]
for t in transforms
td = collect(map(t, s))
matchp, transformed = try_match(f, td)
if matchp
println("f: $(j-1) s: $(k-1) ✓")
return i, transformed
end
end
# println("f: $(j-1) s: $(k-1) x")
end
end
end
function solution19_1()
scanners = collect(parse_input("19.data"))
zipped = collect(zip(scanners, 1:length(scanners)))
fixed = [popfirst!(zipped)]
while length(zipped) > 0
index, transformed = find_match(fixed, zipped)
s = popat!(zipped, index)
# println(s[1])
# println(transformed)
push!(fixed, (transformed, s[2]))
l = length(fixed)
println("located $l")
end
length(reduce(union, map(x->x[1], fixed)))
end
function solution19_2()
positions = [[0, 0, 0],
[-28, 1245, -161],
[1163, 26, -170],
[-1254, 90, -158],
[-18, 1355, -1280],
[1146, -1193, -28],
[-2380, 15, -13],
[-1078, 63, 1010],
[-1105, 28, -1236],
[-12, 2400, -1318],
[-1075, 1190, -1385],
[-2348, 173, -1313],
[-2450, -1024, -26],
[-3547, 0, -79],
[-1233, -1211, 1144],
[-1092, 1288, 1125],
[-2449, 1277, -1238],
[-2290, -2266, -141],
[-4753, 30, -166],
[-3532, 97, 1132],
[-1224, 2573, 1061],
[-2428, 1249, 1069],
[-2269, -3556, -95],
[-1131, -2278, -172],
[-2337, -2411, 1197],
[-4722, 31, 1198],
[-6042, 159, -182],
[-3560, 131, 2245],
[-2385, -3457, 1117],
[-2369, -4811, -22],
[-1144, -3615, -89],
[-4732, -17, 2315],
[-5936, -1062, -10],
[-2339, -3488, 2394],
[-2334, -4684, 1017],
[-3472, -3589, 2361],
[-1256, -3495, 2220]]
reduce(max, map(a->sum(abs.(a)), map(a->a[1]-a[2], [(a,b) for a in positions for b in positions])))
end
solution19_2()

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--- scanner 0 ---
404,-588,-901
528,-643,409
-838,591,734
390,-675,-793
-537,-823,-458
-485,-357,347
-345,-311,381
-661,-816,-575
-876,649,763
-618,-824,-621
553,345,-567
474,580,667
-447,-329,318
-584,868,-557
544,-627,-890
564,392,-477
455,729,728
-892,524,684
-689,845,-530
423,-701,434
7,-33,-71
630,319,-379
443,580,662
-789,900,-551
459,-707,401
--- scanner 1 ---
686,422,578
605,423,415
515,917,-361
-336,658,858
95,138,22
-476,619,847
-340,-569,-846
567,-361,727
-460,603,-452
669,-402,600
729,430,532
-500,-761,534
-322,571,750
-466,-666,-811
-429,-592,574
-355,545,-477
703,-491,-529
-328,-685,520
413,935,-424
-391,539,-444
586,-435,557
-364,-763,-893
807,-499,-711
755,-354,-619
553,889,-390
--- scanner 2 ---
649,640,665
682,-795,504
-784,533,-524
-644,584,-595
-588,-843,648
-30,6,44
-674,560,763
500,723,-460
609,671,-379
-555,-800,653
-675,-892,-343
697,-426,-610
578,704,681
493,664,-388
-671,-858,530
-667,343,800
571,-461,-707
-138,-166,112
-889,563,-600
646,-828,498
640,759,510
-630,509,768
-681,-892,-333
673,-379,-804
-742,-814,-386
577,-820,562
--- scanner 3 ---
-589,542,597
605,-692,669
-500,565,-823
-660,373,557
-458,-679,-417
-488,449,543
-626,468,-788
338,-750,-386
528,-832,-391
562,-778,733
-938,-730,414
543,643,-506
-524,371,-870
407,773,750
-104,29,83
378,-903,-323
-778,-728,485
426,699,580
-438,-605,-362
-469,-447,-387
509,732,623
647,635,-688
-868,-804,481
614,-800,639
595,780,-596
--- scanner 4 ---
727,592,562
-293,-554,779
441,611,-461
-714,465,-776
-743,427,-804
-660,-479,-426
832,-632,460
927,-485,-438
408,393,-506
466,436,-512
110,16,151
-258,-428,682
-393,719,612
-211,-452,876
808,-476,-593
-575,615,604
-485,667,467
-680,325,-822
-627,-443,-432
872,-547,-609
833,512,582
807,604,487
839,-516,451
891,-625,532
-652,-548,-490
30,-46,-14

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--- scanner 0 ---
-1,-1,1
-2,-2,2
-3,-3,3
-2,-3,1
5,6,-4
8,0,7
--- scanner 0 ---
1,-1,1
2,-2,2
3,-3,3
2,-1,3
-5,4,-6
-8,-7,0
--- scanner 0 ---
-1,-1,-1
-2,-2,-2
-3,-3,-3
-1,-3,-2
4,6,5
-7,0,8
--- scanner 0 ---
1,1,-1
2,2,-2
3,3,-3
1,3,-2
-4,-6,5
7,0,8
--- scanner 0 ---
1,1,1
2,2,2
3,3,3
3,1,2
-6,-4,-5
0,7,-8

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199
200
208
210
200
207
240
269
260
263

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using Pkg
Pkg.add("Match")
using Match
include("utils.jl")
function solution2_1()
input_lines = non_empty_lines("2.data")
function parse_line(line)
(command, amount) = split(line, " ")
parsed_amount = parse(Int, amount)
end
map(fline->split(line, " "), input_lines)
x = 0
y = 0
for line in input_lines
(command, amount) = split(line, " ")
parsed_amount = parse(Int, amount)
@match command begin
"forward" => begin x += parsed_amount end
"up" => begin y -= parsed_amount end
"down" => begin y += parsed_amount end
end
end
(x, y, x*y)
end
function solution2_2()
input_lines = non_empty_lines("2.data")
aim = 0
x = 0
y = 0
for line in input_lines
(command, amount) = split(line, " ")
parsed_amount = parse(Int, amount)
@match command begin
"forward" => begin x += parsed_amount; y += parsed_amount * aim end
"up" => begin aim -= parsed_amount end
"down" => begin aim += parsed_amount end
end
end
(x, y, x*y)
end
(solution2_1(), solution2_2())

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include("utils.jl")
function convert_to_binary(string)
map(x->x=='#' ? 1 : 0, collect(string))
end
function parse_input(filename, iterations)
lines = collect(non_empty_lines(filename))
algorithm = convert_to_binary(lines[1])
dim = length(lines[2])
buffered_dim = 2 * iterations + dim
fix_lines = fill(fill(0, buffered_dim), iterations)
i = [fix_lines;
map(convert_to_binary, map(x-> reduce(*, fill(".", iterations)) * x * reduce(*, fill(".", iterations)), lines[2:length(lines)]));
fix_lines]
image = transpose(reshape(reduce(vcat, i), buffered_dim, buffered_dim))
algorithm, image
end
function getv(algorithm, image, i, x, y)
address = []
for ox in (x-1):(x+1)
for oy in (y-1):(y+1)
if ox < 1 || ox > size(image)[1] || oy < 1 || oy > size(image)[1]
# example
# push!(address, "0")
# real
push!(address, i % 2 == 1 ? "0" : "1")
else
push!(address, string(image[ox,oy]))
end
end
end
algorithm[parse(Int, reduce(*, address), base=2)+1]
end
function enhance(fname, iterations)
algorithm, image = parse_input(fname, iterations)
for i in 1:iterations
new = copy(image)
for x in 1:size(image)[1]
for y in 1:size(image)[1]
new[x, y] = getv(algorithm, image, i, x, y)
end
end
image = new
end
length(filter(==(1), image))
end
function solution20_1()
enhance("20.data", 50)
end
solution20_1()

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..#.#..#####.#.#.#.###.##.....###.##.#..###.####..#####..#....#..#..##..###..######.###...####..#..#####..##..#.#####...##.#.#..#.##..#.#......#.###.######.###.####...#.##.##..#..#..#####.....#.#....###..#.##......#.....#..#..#..##..#...##.######.####.####.#.#...#.......#..#.#.#...####.##.#......#..#...##.#.##..#...##.#.##..###.#......#.#.......#.#.#.####.###.##...#.....####.#..#..#.##.#....##..#.####....##...##..#...#......#.#.......#.......##..####..#...#.#.#...##..#.#..###..#####........#..####......#..#
#..#.
#....
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function make_dice(max_value)
next = max_value - 1
r = 0
function roll()
r += 1
next += 1
next %= max_value
return next + 1
end
function rolls()
r
end
roll, rolls
end
function advance(pos, dice)
pos += dice()+dice()+dice()
((pos - 1) % 10) + 1
end
function solution21_1()
pos_a = 8
pos_b = 5
dice, times = make_dice(100)
score_a = 0
score_b = 0
while true
pos_a = advance(pos_a, dice)
score_a += pos_a
println("a -> $pos_a ($score_a)")
if score_a >= 1000
r = times()
println("$score_b $r $(score_b * r)")
break
end
pos_b = advance(pos_b, dice)
score_b += pos_b
println("b -> $pos_b ($score_b)")
if score_b >= 1000
r = times()
println("$score_a $r $(score_a * r)")
break
end
end
end
using Pkg
Pkg.add("Memoize")
using Memoize
DICE = [(a,b,c) for a in 1:3 for b in 1:3 for c in 1:3]
@memoize function round(pa, pb, sa, sb)
sum(map(DICE) do dice
npa = pa + sum(dice)
npa = ((npa - 1) % 10) + 1
nsa = sa + npa
if nsa >= 21
[1, 0]
else
circshift(round(pb, npa, sb, nsa), 1)
end
end)
end
function solution21_2()
round(8, 5, 0, 0)
end
solution21_2()

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include("utils.jl")
function interval(coords)
coords[1]:coords[2]
end
function parse_input(filename)
map(non_empty_lines(filename)) do line
command, coords = split(line)
coords = map(x->parse(Int, x.match), eachmatch(r"-?[0-9]+", coords))
coords = [interval(sort(coords[1:2])),
interval(sort(coords[3:4])),
interval(sort(coords[5:6]))]
command, coords
end
end
function ccontains(a, b)
all(issubset.(a, b))
end
function cempty(cube)
reduce(min, length.(cube)) == 0
end
function setdiffcubes(cube, subcube)
above = [cube[1], cube[2], (subcube[3].stop+1):(cube[3].stop)]
below = [cube[1], cube[2], (cube[3].start):(subcube[3].start-1)]
far = [cube[1], (subcube[2].stop+1):(cube[2].stop), subcube[3]]
near = [cube[1], (cube[2].start):(subcube[2].start-1), subcube[3]]
right = [(subcube[1].stop+1):(cube[1].stop), subcube[2], subcube[3]]
left = [(cube[1].start):(subcube[1].start-1), subcube[2], subcube[3]]
filter(c->!cempty(c), [above, below, far, near, right, left])
end
function add_cube(cubes, cube)
if length(cubes) == 0
return [cube]
end
if any(map(c->ccontains(cube, c), cubes))
return cubes
end
cubes = filter(c->!ccontains(c, cube), cubes)
result = [cube]
for c in cubes
inter = intersect.(c, cube)
if cempty(inter)
push!(result, c)
else
append!(result, setdiffcubes(c, inter))
end
end
result
end
function remove_cube(cubes, cube)
if length(cubes) == 0
return []
end
result = []
for c in cubes
if ccontains(c, cube)
continue
end
inter = intersect.(c, cube)
if cempty(inter)
push!(result, c)
continue
end
append!(result, setdiffcubes(c, inter))
end
result
end
function magnitude(cube)
reduce(*, length.(cube))
end
function run(filter=nothing)
cubes = []
for (command, coords) in parse_input("22.data")
if typeof(filter) == Int64 && reduce(max, map(x->reduce(max, abs.(x)), coords)) > filter
continue
end
if command == "on"
cubes = add_cube(cubes, coords)
else
cubes = remove_cube(cubes, coords)
end
end
sum(map(magnitude, cubes))
end
function solution22_1()
run(50)
end
function solution22_2()
run()
end
solution22_1(), solution22_2()

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on x=10..12,y=10..12,z=10..12
on x=11..13,y=11..13,z=11..13
off x=9..11,y=9..11,z=9..11
on x=10..10,y=10..10,z=10..10

22
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@ -0,0 +1,22 @@
on x=-20..26,y=-36..17,z=-47..7
on x=-20..33,y=-21..23,z=-26..28
on x=-22..28,y=-29..23,z=-38..16
on x=-46..7,y=-6..46,z=-50..-1
on x=-49..1,y=-3..46,z=-24..28
on x=2..47,y=-22..22,z=-23..27
on x=-27..23,y=-28..26,z=-21..29
on x=-39..5,y=-6..47,z=-3..44
on x=-30..21,y=-8..43,z=-13..34
on x=-22..26,y=-27..20,z=-29..19
off x=-48..-32,y=26..41,z=-47..-37
on x=-12..35,y=6..50,z=-50..-2
off x=-48..-32,y=-32..-16,z=-15..-5
on x=-18..26,y=-33..15,z=-7..46
off x=-40..-22,y=-38..-28,z=23..41
on x=-16..35,y=-41..10,z=-47..6
off x=-32..-23,y=11..30,z=-14..3
on x=-49..-5,y=-3..45,z=-29..18
off x=18..30,y=-20..-8,z=-3..13
on x=-41..9,y=-7..43,z=-33..15
on x=-54112..-39298,y=-85059..-49293,z=-27449..7877
on x=967..23432,y=45373..81175,z=27513..53682

60
22_ex_3.data Normal file
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on x=-5..47,y=-31..22,z=-19..33
on x=-44..5,y=-27..21,z=-14..35
on x=-49..-1,y=-11..42,z=-10..38
on x=-20..34,y=-40..6,z=-44..1
off x=26..39,y=40..50,z=-2..11
on x=-41..5,y=-41..6,z=-36..8
off x=-43..-33,y=-45..-28,z=7..25
on x=-33..15,y=-32..19,z=-34..11
off x=35..47,y=-46..-34,z=-11..5
on x=-14..36,y=-6..44,z=-16..29
on x=-57795..-6158,y=29564..72030,z=20435..90618
on x=36731..105352,y=-21140..28532,z=16094..90401
on x=30999..107136,y=-53464..15513,z=8553..71215
on x=13528..83982,y=-99403..-27377,z=-24141..23996
on x=-72682..-12347,y=18159..111354,z=7391..80950
on x=-1060..80757,y=-65301..-20884,z=-103788..-16709
on x=-83015..-9461,y=-72160..-8347,z=-81239..-26856
on x=-52752..22273,y=-49450..9096,z=54442..119054
on x=-29982..40483,y=-108474..-28371,z=-24328..38471
on x=-4958..62750,y=40422..118853,z=-7672..65583
on x=55694..108686,y=-43367..46958,z=-26781..48729
on x=-98497..-18186,y=-63569..3412,z=1232..88485
on x=-726..56291,y=-62629..13224,z=18033..85226
on x=-110886..-34664,y=-81338..-8658,z=8914..63723
on x=-55829..24974,y=-16897..54165,z=-121762..-28058
on x=-65152..-11147,y=22489..91432,z=-58782..1780
on x=-120100..-32970,y=-46592..27473,z=-11695..61039
on x=-18631..37533,y=-124565..-50804,z=-35667..28308
on x=-57817..18248,y=49321..117703,z=5745..55881
on x=14781..98692,y=-1341..70827,z=15753..70151
on x=-34419..55919,y=-19626..40991,z=39015..114138
on x=-60785..11593,y=-56135..2999,z=-95368..-26915
on x=-32178..58085,y=17647..101866,z=-91405..-8878
on x=-53655..12091,y=50097..105568,z=-75335..-4862
on x=-111166..-40997,y=-71714..2688,z=5609..50954
on x=-16602..70118,y=-98693..-44401,z=5197..76897
on x=16383..101554,y=4615..83635,z=-44907..18747
off x=-95822..-15171,y=-19987..48940,z=10804..104439
on x=-89813..-14614,y=16069..88491,z=-3297..45228
on x=41075..99376,y=-20427..49978,z=-52012..13762
on x=-21330..50085,y=-17944..62733,z=-112280..-30197
on x=-16478..35915,y=36008..118594,z=-7885..47086
off x=-98156..-27851,y=-49952..43171,z=-99005..-8456
off x=2032..69770,y=-71013..4824,z=7471..94418
on x=43670..120875,y=-42068..12382,z=-24787..38892
off x=37514..111226,y=-45862..25743,z=-16714..54663
off x=25699..97951,y=-30668..59918,z=-15349..69697
off x=-44271..17935,y=-9516..60759,z=49131..112598
on x=-61695..-5813,y=40978..94975,z=8655..80240
off x=-101086..-9439,y=-7088..67543,z=33935..83858
off x=18020..114017,y=-48931..32606,z=21474..89843
off x=-77139..10506,y=-89994..-18797,z=-80..59318
off x=8476..79288,y=-75520..11602,z=-96624..-24783
on x=-47488..-1262,y=24338..100707,z=16292..72967
off x=-84341..13987,y=2429..92914,z=-90671..-1318
off x=-37810..49457,y=-71013..-7894,z=-105357..-13188
off x=-27365..46395,y=31009..98017,z=15428..76570
off x=-70369..-16548,y=22648..78696,z=-1892..86821
on x=-53470..21291,y=-120233..-33476,z=-44150..38147
off x=-93533..-4276,y=-16170..68771,z=-104985..-24507

6
2_ex.data Normal file
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forward 5
down 5
forward 8
up 3
down 8
forward 2

1000
3.data Normal file
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File diff suppressed because it is too large Load Diff

61
3.jl Normal file
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@ -0,0 +1,61 @@
include("utils.jl")
function parse_input(filename)
input_lines = collect(non_empty_lines(filename))
width = length(input_lines[1])
integers = map(x->parse(Int, x, base = 2), input_lines)
(integers, width)
end
function most_common_bit(integers, width)
score = zeros(Int, width)
for int in integers
for index in 1:width
score[index] += ((int >> (index-1) & 1) - 0.5) * 2
end
end
map(map(sign, score)) do x
if x == 0
1
else
x
end
end
end
function solution3_1()
integers, width = parse_input("3.data")
score = most_common_bit(integers, width)
result = 0
cresult = 0
for i in 1:width
result += ((score[i] + 1) >> 1) << (i - 1)
cresult += (((score[i] * -1) + 1) >> 1) << (i - 1)
end
(result, cresult, result * cresult)
end
function filterdata(integers, width, score_factor)
ints = copy(integers)
for i in reverse(1:width)
score = most_common_bit(ints, width) * score_factor
ints = filter(ints) do x
(x & (1 << (i - 1))) >> (i - 1) == (score[i] + 1) >> 1
end
if length(ints) == 1
break
end
end
ints[1]
end
function solution3_2()
integers, width = parse_input("3.data")
oxy = filterdata(integers, width, 1)
co2 = filterdata(integers, width, -1)
(oxy, co2, oxy * co2)
end
solution3_2()

12
3_ex.data Normal file
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@ -0,0 +1,12 @@
00100
11110
10110
10111
10101
01111
00111
11100
10000
11001
00010
01010

601
4.data Normal file
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@ -0,0 +1,601 @@
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50 30 12 22 39
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5 46 20 50 57
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95 34 31 53 73
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62 1 32 85 9
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93 24 95 51 90
86 35 22 72 38
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29 63 57 86 77
78 64 5 32 96
38 69 55 87 50
91 26 89 87 54
51 43 22 68 21
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28 92 4 39 40
96 97 73 72 29
40 83 35 5 91
41 45 57 94 60
61 31 59 47 95
81 89 69 25 33
3 36 15 93 27
19 49 37 14 48
96 55 43 6 12
22 21 50 47 75
78 40 51 91 63
59 87 28 93 86
86 44 3 54 17
71 82 70 88 49
14 43 63 76 15
78 81 61 22 46
84 65 9 29 83
15 28 5 45 29
12 19 64 93 48
83 40 7 99 74
20 30 85 67 58
22 21 59 76 18
42 1 46 8 62
69 27 67 68 38
88 35 83 14 84
53 85 82 29 59
61 73 39 74 99
38 32 50 9 74
75 66 63 3 62
68 15 17 98 6
81 29 52 88 21
58 2 87 96 56
49 12 26 89 98
92 69 90 50 35
74 40 0 87 48
19 47 65 42 31
17 3 33 28 85
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32 49 65 42 24
95 93 36 78 62
34 96 79 10 4
39 54 15 17 51
53 32 41 16 95
54 47 56 69 17
31 0 42 66 13
88 9 43 38 79
21 8 19 98 92
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36 62 64 45 53
31 96 16 46 44
93 11 57 56 65
27 3 73 74 68
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82 57 32 81 58
13 66 3 94 67

83
4.jl Normal file
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@ -0,0 +1,83 @@
include("utils.jl")
function parse_boards(lines)
num_boards = div(length(lines),5)
boards = Array{Array{Int}}(undef, num_boards)
for i in 1:num_boards
boards[i] = zeros(5, 5)
for li in 1:5
values = map(x->parse(Int, x), split(lines[(i - 1)*5+li]))
boards[i][li,:] .= values
end
end
boards
end
function parse_input(filename)
lines = Iterators.Stateful(non_empty_lines(filename))
numbers = map(x->parse(Int, x), split(popfirst!(lines), ","))
boards = parse_boards(collect(lines))
numbers, boards
end
function apply(number, boards)
for board in boards
for i in CartesianIndices((1:5, 1:5))
if board[i] == number
board[i] = -1
end
end
end
end
function check(boards)
for board in boards
for i in 1:5
if (reduce(+, board[i,:]) == -5) || (reduce(+, board[:,i]) == -5)
return true, board
end
end
end
false, nothing
end
function solution4_1()
numbers, boards = parse_input("4.data")
for number in numbers
apply(number, boards)
winning, board = check(boards)
if winning
score = reduce(+, filter(>(0), board))
return (score, number, score * number)
end
end
end
function remove_winning_boards(boards)
last = nothing
filtered = filter(boards) do board
for i in 1:5
if (reduce(+, board[i,:]) == -5) || (reduce(+, board[:,i]) == -5)
last = board
return false
end
end
true
end
filtered, last
end
function solution4_2()
numbers, boards = parse_input("4.data")
for number in numbers
apply(number, boards)
boards, board = remove_winning_boards(boards)
if length(boards) == 0
score = reduce(+, filter(>(0), board))
return (score, number, score * number)
end
end
end
solution4_2()

19
4_ex.data Normal file
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@ -0,0 +1,19 @@
7,4,9,5,11,17,23,2,0,14,21,24,10,16,13,6,15,25,12,22,18,20,8,19,3,26,1
22 13 17 11 0
8 2 23 4 24
21 9 14 16 7
6 10 3 18 5
1 12 20 15 19
3 15 0 2 22
9 18 13 17 5
19 8 7 25 23
20 11 10 24 4
14 21 16 12 6
14 21 17 24 4
10 16 15 9 19
18 8 23 26 20
22 11 13 6 5
2 0 12 3 7

500
5.data Normal file
View File

@ -0,0 +1,500 @@
427,523 -> 427,790
94,639 -> 94,951
757,371 -> 465,663
503,935 -> 503,148
655,565 -> 655,951
167,754 -> 710,211
634,433 -> 245,433
449,889 -> 449,509
152,753 -> 207,808
301,90 -> 301,982
566,405 -> 482,405
758,741 -> 847,652
342,686 -> 921,107
741,317 -> 741,533
976,917 -> 976,664
273,272 -> 273,899
326,616 -> 326,478
483,906 -> 391,814
20,165 -> 20,349
860,533 -> 860,137
846,834 -> 846,610
155,923 -> 241,923
989,984 -> 17,12
711,681 -> 82,52
312,788 -> 312,281
319,746 -> 892,746
568,555 -> 757,555
659,450 -> 940,450
870,260 -> 870,487
110,794 -> 604,794
509,141 -> 509,99
29,68 -> 29,713
340,688 -> 820,688
428,46 -> 902,520
539,525 -> 539,210
181,822 -> 806,822
551,338 -> 551,79
894,542 -> 894,151
700,625 -> 700,60
143,736 -> 143,770
810,975 -> 54,219
44,373 -> 44,514
849,794 -> 120,794
347,690 -> 97,440
10,625 -> 57,625
541,202 -> 799,202
375,491 -> 809,925
271,474 -> 271,905
980,825 -> 980,908
600,751 -> 624,751
120,978 -> 958,140
262,916 -> 262,794
399,350 -> 399,666
623,270 -> 158,735
585,792 -> 585,381
168,34 -> 168,88
256,806 -> 566,806
196,397 -> 326,397
583,677 -> 172,677
45,242 -> 311,508
530,469 -> 433,566
46,101 -> 877,932
607,655 -> 485,777
773,672 -> 461,360
340,30 -> 659,30
846,952 -> 846,917
457,700 -> 125,368
571,656 -> 561,656
251,30 -> 576,30
79,197 -> 79,87
518,51 -> 518,904
916,802 -> 181,67
23,626 -> 485,626
956,106 -> 956,811
849,384 -> 743,278
893,153 -> 893,608
17,989 -> 933,73
701,119 -> 701,704
494,580 -> 494,821
605,740 -> 605,363
823,58 -> 823,166
250,363 -> 566,363
418,178 -> 783,178
273,82 -> 273,115
545,489 -> 656,489
468,671 -> 966,671
376,744 -> 178,942
62,728 -> 589,201
588,150 -> 467,29
202,664 -> 751,115
519,547 -> 916,150
803,483 -> 380,60
599,459 -> 922,459
162,680 -> 162,385
823,94 -> 18,899
802,734 -> 415,347
115,964 -> 115,935
749,595 -> 749,770
229,64 -> 582,64
103,496 -> 551,48
137,581 -> 707,11
501,563 -> 895,957
59,222 -> 620,222
874,249 -> 874,938
201,927 -> 927,201
630,619 -> 655,619
666,331 -> 413,78
517,650 -> 425,558
803,256 -> 803,598
303,460 -> 606,763
124,975 -> 967,132
867,528 -> 867,363
239,140 -> 239,211
975,779 -> 364,168
971,49 -> 531,49
408,932 -> 143,932
927,663 -> 392,128
497,246 -> 497,389
849,935 -> 15,101
582,517 -> 543,517
410,85 -> 237,85
292,316 -> 841,316
753,708 -> 753,38
266,328 -> 267,327
789,980 -> 16,207
514,963 -> 514,180
865,532 -> 687,710
544,620 -> 956,208
132,287 -> 557,287
268,710 -> 268,684
234,746 -> 234,688
51,906 -> 51,911
191,159 -> 428,159
834,956 -> 834,565
916,242 -> 230,928
227,789 -> 227,689
206,767 -> 705,268
291,403 -> 578,403
35,890 -> 956,890
185,618 -> 402,401
989,858 -> 284,858
391,284 -> 391,74
717,158 -> 670,111
188,146 -> 785,743
602,696 -> 602,367
975,972 -> 975,317
146,301 -> 146,205
328,215 -> 861,215
15,653 -> 990,653
48,101 -> 48,34
929,547 -> 506,970
901,519 -> 670,519
801,560 -> 19,560
953,829 -> 876,829
856,317 -> 856,787
618,171 -> 86,703
823,622 -> 369,168
209,291 -> 846,928
944,601 -> 944,544
678,223 -> 987,223
893,143 -> 54,982
30,740 -> 244,740
974,974 -> 15,15
497,557 -> 63,557
846,193 -> 846,964
83,119 -> 946,982
864,179 -> 864,387
583,312 -> 77,818
612,154 -> 612,641
487,136 -> 487,938
502,611 -> 215,898
648,978 -> 648,885
373,372 -> 318,372
582,988 -> 168,574
453,261 -> 899,261
467,578 -> 33,578
876,138 -> 683,331
708,248 -> 132,824
686,56 -> 686,211
687,964 -> 687,485
626,76 -> 626,222
630,176 -> 630,485
968,608 -> 968,382
943,69 -> 943,856
173,344 -> 173,902
193,918 -> 326,918
811,748 -> 379,316
484,941 -> 113,570
277,635 -> 156,514
770,573 -> 691,573
37,475 -> 464,475
720,856 -> 676,856
988,13 -> 25,976
414,74 -> 140,74
169,158 -> 29,298
611,910 -> 611,718
851,161 -> 507,161
76,969 -> 76,114
270,243 -> 976,949
375,607 -> 325,657
738,450 -> 196,450
153,776 -> 153,325
862,123 -> 862,535
705,933 -> 931,933
900,26 -> 35,891
870,66 -> 79,857
815,569 -> 347,569
950,290 -> 757,290
719,446 -> 317,848
243,531 -> 671,531
320,807 -> 380,807
221,984 -> 221,858
832,308 -> 832,950
522,694 -> 584,694
412,48 -> 412,328
898,690 -> 646,690
602,191 -> 106,191
58,961 -> 58,879
177,413 -> 147,383
48,159 -> 48,639
18,935 -> 883,70
26,68 -> 406,68
579,73 -> 579,523
975,825 -> 975,737
390,125 -> 737,472
127,179 -> 127,111
506,557 -> 576,487
161,210 -> 324,47
524,165 -> 524,67
938,790 -> 184,36
302,431 -> 548,677
559,363 -> 559,913
936,10 -> 176,770
828,976 -> 657,976
864,14 -> 864,607
28,46 -> 28,347
732,742 -> 732,615
91,712 -> 91,279
982,884 -> 772,674
917,47 -> 683,47
631,697 -> 83,697
463,413 -> 463,949
719,348 -> 197,870
980,25 -> 24,981
64,608 -> 410,954
103,882 -> 103,842
279,10 -> 830,561
409,573 -> 409,247
673,291 -> 222,291
315,143 -> 942,770
216,89 -> 80,225
134,936 -> 967,103
387,566 -> 82,566
282,259 -> 862,839
930,225 -> 930,775
460,370 -> 460,922
276,254 -> 518,496
647,881 -> 293,527
983,977 -> 90,84
336,836 -> 336,392
96,888 -> 963,21
42,47 -> 978,983
923,280 -> 726,83
311,486 -> 505,292
496,637 -> 861,637
575,438 -> 575,498
228,754 -> 228,599
965,963 -> 21,19
834,171 -> 730,171
497,234 -> 497,448
977,970 -> 977,618
335,422 -> 335,640
931,954 -> 36,59
140,966 -> 871,235
352,88 -> 449,88
631,332 -> 735,332
765,823 -> 48,106
496,685 -> 103,685
89,416 -> 89,37
121,544 -> 569,544
643,712 -> 596,712
662,656 -> 739,656
42,386 -> 42,697
959,875 -> 959,527
874,967 -> 120,213
962,649 -> 240,649
627,714 -> 266,714
148,301 -> 148,383
883,491 -> 883,605
242,401 -> 348,401
660,931 -> 420,931
475,72 -> 955,552
912,949 -> 912,881
928,330 -> 45,330
474,203 -> 131,203
805,459 -> 818,459
534,645 -> 639,750
68,911 -> 933,46
717,276 -> 21,972
233,615 -> 957,615
902,495 -> 902,867
230,427 -> 230,421
630,917 -> 845,917
884,903 -> 34,53
157,205 -> 157,409
857,588 -> 608,588
422,863 -> 422,469
890,83 -> 722,251
546,318 -> 138,726
691,881 -> 52,242
171,435 -> 209,435
978,15 -> 702,15
581,86 -> 581,282
61,767 -> 61,903
835,289 -> 835,941
176,351 -> 707,882
571,84 -> 571,788
700,373 -> 700,650
40,40 -> 945,945
82,616 -> 809,616
351,402 -> 455,402
517,242 -> 73,686
489,795 -> 814,795
543,734 -> 611,734
688,849 -> 688,571
631,903 -> 883,903
312,636 -> 667,281
213,575 -> 699,89
752,128 -> 161,719
754,931 -> 754,474
748,666 -> 748,54
123,667 -> 57,667
140,497 -> 140,644
634,961 -> 187,514
822,865 -> 822,126
58,162 -> 632,736
417,164 -> 166,164
943,597 -> 943,274
355,756 -> 355,167
340,546 -> 232,438
166,125 -> 166,96
354,394 -> 354,579
147,844 -> 155,844
652,723 -> 719,656
584,582 -> 667,665
514,373 -> 685,202
308,404 -> 966,404
124,179 -> 916,971
706,597 -> 455,597
52,822 -> 510,364
419,900 -> 860,900
153,649 -> 872,649
915,160 -> 56,160
422,346 -> 422,38
940,73 -> 940,784
922,581 -> 922,753
949,821 -> 949,621
591,778 -> 145,778
93,685 -> 164,756
287,469 -> 287,948
953,952 -> 446,445
935,47 -> 12,970
458,109 -> 458,639
71,643 -> 644,70
812,214 -> 812,655
488,496 -> 158,496
113,868 -> 755,226
666,429 -> 666,920
962,246 -> 517,246
400,261 -> 400,713
601,617 -> 943,275
904,847 -> 120,63
556,334 -> 278,612
416,463 -> 59,463
724,401 -> 871,548
701,210 -> 426,485
786,116 -> 786,904
976,979 -> 157,160
674,377 -> 674,891
321,829 -> 891,829
404,84 -> 404,800
975,850 -> 906,781
753,331 -> 978,331
87,240 -> 87,383
167,390 -> 167,20
258,931 -> 107,780
672,313 -> 696,313
589,88 -> 589,13
637,65 -> 637,808
532,610 -> 532,756
612,482 -> 318,482
522,322 -> 135,322
89,49 -> 89,679
475,506 -> 475,973
385,348 -> 229,348
633,978 -> 633,255
978,833 -> 978,436
746,553 -> 707,553
970,820 -> 970,548
589,59 -> 589,19
674,890 -> 16,890
838,315 -> 413,740
39,129 -> 860,950
923,755 -> 425,257
757,929 -> 940,746
639,390 -> 104,925
650,512 -> 260,902
718,90 -> 987,90
352,228 -> 795,671
141,629 -> 491,279
755,616 -> 368,616
117,113 -> 707,703
206,73 -> 926,793
372,415 -> 372,130
894,632 -> 611,632
974,554 -> 878,554
823,710 -> 823,972
730,711 -> 582,859
94,912 -> 108,912
782,190 -> 88,884
668,567 -> 336,567
87,266 -> 327,506
738,303 -> 36,303
320,358 -> 445,358
566,725 -> 695,725
94,364 -> 94,64
884,184 -> 159,909
947,575 -> 947,662
658,741 -> 658,470
512,776 -> 512,960
96,757 -> 950,757
349,604 -> 349,760
459,247 -> 355,143
90,12 -> 95,12
28,27 -> 981,980
388,959 -> 508,959
704,194 -> 148,194
349,546 -> 349,259
30,38 -> 720,728
307,631 -> 307,282
520,417 -> 154,417
746,771 -> 924,771
838,932 -> 20,114
406,141 -> 406,75
15,35 -> 963,983
264,143 -> 948,827
545,899 -> 742,899
759,356 -> 309,356
686,707 -> 224,245
226,985 -> 962,249
826,628 -> 826,637
985,329 -> 683,631
586,283 -> 586,258
602,703 -> 243,703
419,883 -> 419,556
475,375 -> 211,111
981,15 -> 19,977
989,10 -> 10,989
238,350 -> 479,591
720,714 -> 603,714
969,985 -> 35,51
844,356 -> 837,349
450,354 -> 450,834
385,870 -> 385,758
911,856 -> 89,34
948,124 -> 989,124
439,556 -> 439,310
990,233 -> 990,633
747,723 -> 943,527
418,23 -> 804,23
876,96 -> 38,934
556,92 -> 532,92
727,155 -> 727,279
674,545 -> 940,811
118,879 -> 420,879
141,50 -> 426,335
591,180 -> 591,537
662,511 -> 681,511
776,858 -> 776,956
872,329 -> 87,329
183,985 -> 114,985
186,179 -> 186,801
354,933 -> 491,933
10,223 -> 759,972
112,626 -> 702,36
498,78 -> 161,78
196,61 -> 814,679
629,71 -> 116,71
23,281 -> 23,32
819,810 -> 432,423
187,276 -> 187,912
95,683 -> 576,683
125,813 -> 856,82
98,882 -> 140,882
843,909 -> 198,909
192,904 -> 192,335
375,342 -> 375,668
61,804 -> 61,832
475,387 -> 966,878
822,740 -> 822,186

67
5.jl Normal file
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include("utils.jl")
function parse_input(filename)
map(non_empty_lines(filename)) do line
collect(map(x->parse(Int, x.match), eachmatch(r"[0-9]+", line)))
end
end
function solution5_1()
max_x = 0
max_y = 0
lines = filter(parse_input("5.data")) do line
max_x = max(max_x, line[1], line[2])
max_y = max(max_y, line[2], line[4])
line[1] == line[3] || line[2] == line[4]
end
board = fill(0, max_x + 1 , max_y + 1)
for line in lines
if line[1] == line[3]
if line[2] <= line[4]
for i in line[2]:line[4]
board[line[1] + 1, i + 1] += 1
end
else
for i in line[4]:line[2]
board[line[1] + 1, i + 1] += 1
end
end
else
if line[1] <= line[3]
for i in line[1]:line[3]
board[i + 1, line[2] + 1] += 1
end
else
for i in line[3]:line[1]
board[i + 1, line[2] + 1] += 1
end
end
end
end
length(filter(>(1), board))
end
function solution5_2()
max_x = 0
max_y = 0
lines = filter(parse_input("5.data")) do line
max_x = max(max_x, line[1], line[2])
max_y = max(max_y, line[2], line[4])
true
end
board = fill(0, max_x + 1 , max_y + 1)
for line in lines
x = line[1]
y = line[2]
board[x + 1, y + 1] += 1
while x != line[3] || y != line[4]
x += sign(line[3]-line[1])
y += sign(line[4]-line[2])
board[x + 1, y + 1] += 1
end
end
length(filter(>(1), board))
# transpose(board)
end
solution5_2()

10
5_ex.data Normal file
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0,9 -> 5,9
8,0 -> 0,8
9,4 -> 3,4
2,2 -> 2,1
7,0 -> 7,4
6,4 -> 2,0
0,9 -> 2,9
3,4 -> 1,4
0,0 -> 8,8
5,5 -> 8,2

1
6.data Normal file
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@ -0,0 +1 @@
2,1,1,4,4,1,3,4,2,4,2,1,1,4,3,5,1,1,5,1,1,5,4,5,4,1,5,1,3,1,4,2,3,2,1,2,5,5,2,3,1,2,3,3,1,4,3,1,1,1,1,5,2,1,1,1,5,3,3,2,1,4,1,1,1,3,1,1,5,5,1,4,4,4,4,5,1,5,1,1,5,5,2,2,5,4,1,5,4,1,4,1,1,1,1,5,3,2,4,1,1,1,4,4,1,2,1,1,5,2,1,1,1,4,4,4,4,3,3,1,1,5,1,5,2,1,4,1,2,4,4,4,4,2,2,2,4,4,4,2,1,5,5,2,1,1,1,4,4,1,4,2,3,3,3,3,3,5,4,1,5,1,4,5,5,1,1,1,4,1,2,4,4,1,2,3,3,3,3,5,1,4,2,5,5,2,1,1,1,1,3,3,1,1,2,3,2,5,4,2,1,1,2,2,2,1,3,1,5,4,1,1,5,3,3,2,2,3,1,1,1,1,2,4,2,2,5,1,2,4,2,1,1,3,2,5,5,3,1,3,3,1,4,1,1,5,5,1,5,4,1,1,1,1,2,3,3,1,2,3,1,5,1,3,1,1,3,1,1,1,1,1,1,5,1,1,5,5,2,1,1,5,2,4,5,5,1,1,5,1,5,5,1,1,3,3,1,1,3,1

19
6.jl Normal file
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function solution6(n)
initial = parse.(Int, split(readline("6.data"),","))
fish = [count(initial .== i) for i in 0:8]
for _ in 1:n
fish = circshift(fish, -1)
fish[7] += fish[9]
end
sum(fish)
end
function solution6_1()
solution6(80)
end
function solution6_2()
solution6(256)
end
solution6_1(),solution6_2()

1
6_ex.data Normal file
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@ -0,0 +1 @@
3,4,3,1,2

1
7.data Normal file
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@ -0,0 +1 @@
1101,1,29,67,1102,0,1,65,1008,65,35,66,1005,66,28,1,67,65,20,4,0,1001,65,1,65,1106,0,8,99,35,67,101,99,105,32,110,39,101,115,116,32,112,97,115,32,117,110,101,32,105,110,116,99,111,100,101,32,112,114,111,103,114,97,109,10,478,1187,253,1892,900,155,20,787,17,248,1397,407,167,686,638,1020,960,124,840,220,1824,700,373,4,551,229,294,567,254,350,1144,679,124,361,145,483,335,202,1334,367,60,870,11,557,482,645,672,1296,1538,427,78,542,1135,13,65,0,140,705,13,642,187,1085,36,1118,349,601,382,584,941,26,949,200,763,198,430,204,1352,1135,210,342,11,1089,830,1523,9,523,167,762,254,805,8,132,29,102,1299,936,756,59,134,183,235,316,139,48,182,44,88,213,113,93,169,565,601,1899,1191,189,796,770,32,1183,365,374,867,918,1084,86,75,20,47,99,1140,2,99,1024,366,455,752,556,1220,66,326,450,213,1,342,756,49,675,160,280,68,221,193,379,88,179,94,16,109,570,1145,1207,824,355,1389,1601,168,86,236,923,120,759,14,478,460,84,167,1723,1005,269,6,171,861,311,832,952,701,3,1598,1466,96,780,57,161,631,572,276,105,594,276,17,405,688,1444,173,23,199,177,689,19,565,472,151,986,76,379,1430,212,928,106,25,143,84,833,942,860,1555,271,239,720,596,1209,235,535,361,1794,79,283,275,17,342,1687,1434,173,967,740,217,1370,18,1579,1259,546,94,623,475,834,1000,456,101,520,120,1023,360,167,213,617,42,1149,629,760,17,33,27,1347,414,646,1116,1340,134,259,143,407,249,328,968,677,241,438,98,313,27,791,1,634,3,918,1482,213,123,444,45,24,26,26,1203,64,67,1562,1,4,298,12,384,32,443,37,268,674,356,202,286,694,272,163,950,1022,54,59,21,73,519,462,106,76,1112,10,72,388,194,6,120,9,645,209,1121,75,599,362,661,439,69,62,339,390,23,1247,365,1266,4,246,511,47,467,134,276,497,130,458,427,669,1191,701,917,168,1191,294,641,236,801,375,106,872,800,87,356,583,1096,253,459,951,1331,719,66,1091,525,15,370,290,141,1201,30,43,37,76,1131,616,297,172,402,1016,654,301,63,872,303,69,1195,502,351,52,1659,86,104,294,807,166,120,190,333,60,283,819,198,184,144,278,343,1395,496,103,705,485,172,642,225,181,583,188,38,436,801,91,5,634,180,28,20,146,488,676,121,420,965,220,1564,1011,241,423,3,1631,709,106,725,164,1032,65,205,503,188,397,1072,49,121,761,721,249,418,87,126,258,712,500,435,157,127,681,108,270,647,504,505,83,407,212,165,1177,160,715,1292,491,195,141,25,829,1316,242,754,364,1707,33,594,434,488,368,298,183,1156,29,1674,537,378,8,9,860,240,571,749,471,331,501,156,62,427,1103,52,12,832,1198,284,388,827,556,194,288,218,397,84,1485,95,401,739,986,994,305,668,1324,1437,312,993,15,822,923,707,135,42,423,37,1183,1344,997,19,699,395,119,7,168,1711,50,151,38,20,163,686,1364,21,24,411,32,335,188,55,628,274,1766,439,180,286,1024,87,15,1498,290,561,971,32,294,67,113,219,42,18,715,3,664,242,583,221,1045,236,74,46,1612,639,325,164,100,69,518,38,502,26,329,112,1174,127,124,90,144,527,468,152,1098,800,125,349,191,290,191,27,651,446,267,9,1304,269,586,64,983,152,236,512,8,248,177,109,311,957,47,126,69,13,709,204,381,1151,580,340,994,865,258,190,9,1149,930,1128,321,100,471,0,507,1308,326,585,813,1088,76,174,333,387,631,186,430,988,24,820,11,45,173,167,1494,98,1467,456,167,21,1363,1173,394,318,1601,1111,1249,757,282,672,1227,1214,277,336,815,136,1192,681,689,431,130,1488,154,465,14,709,339,1123,68,151,1280,143,1797,23,250,1231,1007,302,1103,2,585,552,1732,994,225,771,1495,82,229,700,910,15,38,159,1122,316,1044,711,1436,920,1722,523,1398,188,443,1032,93,33,397,272,187,24,489,53,79,1277,671,1094,68,1705,984,1096,512,145,389,167,161,1174,94,4,534,1295,648,75,24,366,995,175,220,714,843,412,267,634,1209,66,1094,125,822,1114,1513,694,1520,30,676,817,245,26,77,1146,552,143,165,39,343,971,87,0,90,1434,588,616,99,297,1034,114,5,702,917,582,733,31,54,820,0,212,192,282,33,639,1661,460,75,680,115,178,194,271,274,582,1008,89,139,611,707,0,376,65,9,161,135,40,134,566,66,601,95,817,745,202,352,447,322,842,6,1247,175,468,330,608,368,139,21,29,486,121,9,1293,298,73,328,302,145,889,1794,677,56,952,520,80

14
7.jl Normal file
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function solution7(costfunction)
start = parse.(Int, split(readline("7.data"),","))
min(map(x -> costfunction(x, start), min(start...):max(start...))...)
end
function solution7_1()
solution7((x, positions) -> sum(abs.(positions .- x)))
end
function solution7_2()
solution7((x, positions) -> sum(div.(map(n->n * (n+1), abs.(positions .- x)), 2)))
end
solution7_1(), solution7_2()

1
7_ex.data Normal file
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16,1,2,0,4,2,7,1,2,14

200
8.data Normal file
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dcagfb cbegda cabdf bagedf dcb cd dcbegaf aebcf bgdaf dgcf | dacebgf cbafd dbacf cdgf
dfgbc ceagbd egb cgdae eafcgd ecbgd eb aefbgcd bfaceg deba | baed ecabgd aebd cadfebg
acbd bagfec bedcf efbca dbfecag gadcfe dc dbcaef cde fbegd | deacfg bfagcde bgedf cde
dgec dfc fabgd bfcgae dfbcg baegdcf cd fbdace cdbefg becgf | cedg adfbecg badgf dgbfc
be bacedg dfacb fbge deagcf eba egacf gcebfa febac dbgacfe | befg be egbf aedgcbf
gafbd gbafce agced fdgae bcedgaf gdeacb efdc eaf fe cgeadf | cgdae fdec fcdeabg ef
cdaefgb cfadbe gc afgcbe afedcg faecb cabg egc bfgde bfgce | fbaedc gc abgc bfcea
egcafb adgecf caebf fdgbaec fbaed cebg facbgd cfe fgabc ec | fbgca deagfc ce ce
fcdab deb cdbfea fecb befcdga abecd gdcae efbgda fcdgba be | cfbad dacge gbdeaf bed
afdecg gfcadb ecadfbg facgd ed egda efbgc ecd cdegf bfadec | becgf fcbeg de cgefb
caedbg gcfdba bfdae ge beagfdc bedag gcabd egac gcefbd deg | fdbecg acge bgfacd abefd
befad ecgad adgefcb febg gb afdcbe dcbfag beafgd dbg eagdb | feabd aedfb gbd aebdcf
bcfde acbfed dcaf dbcae gacbfe fc dgbcae egbacfd fcb edbfg | gbdfe gbeafc bcf cebfga
cgbade adcbgfe fb efgbad gbcfde aecfd edgba afbg bfeda fbe | ecafbdg bfdea fgab edfbgc
cbfa gefbd bcfedga bagefc ab bga ecdgab gbaef gfacde fcage | acdegf gab cegadb gab
cafbeg dfaebc fdca dgcbe eacbf fde debgfca egabfd dfceb fd | df eabcf egbdc dfe
egcdfa ebdac fdaecbg ed fdacb agecb cbdgaf ecd efdb dbaecf | dcabf cbeag ebdf ecgba
gacdebf decfbg afbdg dcagbf cg agdbc agcf ebcad abgedf bcg | badec dcbga cgfa abcde
fgcad dfebga gdbef ec ebcd fbcgea ceg fgedc defgbac dcfgbe | ce gbdfe fbcgdea fcgbdea
cgbef afcbeg dgbec ebafcd cgbfeda adbge cd ecd gfcd fgbdec | edc gcebd fegacdb cd
bafdcg egfdc bcfge dgeabf cd cgbadfe agefd facegd eadc cgd | cgd dcg defbagc cfdbega
degfcb fdg edabgf cadge fg gfcb cdeafbg bcefd dgfec beadcf | dgcbfe cabfed fecbd cgdfbea
dbfaec bfcgae cdb cdaf defbcg abgde ceabf adceb decgafb cd | fcda bdc dc afgecb
cead efcdg adbcfeg fagdc def acegfd fcbagd cbgef ed fgdaeb | ecad fcaedg cgadf cfaged
egdbfa cbgefad dgacbf cb dfbgec gefbd cbf gefbc gcefa bdec | ebcd ecgdbf fgebc cfb
fagbe acbged bf eagcf dgaebcf gbf febadg deabg cdagbf fbed | fbcdag fgeca abgdcf cdbage
baefc febgadc fcag dbgec feg gacfbe gfecb afedgb fg edafcb | aegdfb feabc agbfed fabged
gfedcb eadgcf fed befdagc gaedf bgdea bdafcg fe acdfg feca | bcfdga cagfd afce efca
cbfed degfba fgdbac acdg fdcab ac acgebf agdfb bac gcbfdea | cbdegfa caefgbd ca gdbcafe
dbcgea dc dcg cadf abgcdf efgdb afgbc gefacdb fbcdg agebfc | dabgce gbceda dgc dc
ef dgfbc cefbg gabecfd agceb feg gbcadf dfbe fcdgeb dfagec | gfe cafegd dfeb fe
ebgdc egdacb dfbcega dfe dbfge bagef ecdbfg bdcf df fgecad | dbgce fd cfdb edf
bdage ab fbgaecd aefb bfadeg gefad cdgeb agcbdf gba fgcdae | cgdbfa befa dgefca acebfdg
aecb dbgecf eagfcb ecdbfag fdegba geacf gebfa cge cgdfa ec | acgfe gec cabe fgcda
acd cafg abedcgf cfebda efcbgd cegfd ca cdgafe agcde bgeda | egcfbda gcfdae gefacd dca
dcefga gdefa db fbaed abefdgc faebc fbgaed bdf gbed dcafgb | bfd db db gbdfae
befac abcd bdcfe ecd cd baegfc edfgca adfbce aebcdgf edbfg | cgedfab feabc cd dabc
eacdgf cebgdfa acgebd ecdba dbcfea fdgcb dag ga acgdb abge | ag ga adg ag
gca fagbe dfageb bagce ecgfab gfce gc dcfeabg fadbcg bedac | afbdceg gadfeb cga acbdfg
gbad febac dea gadbecf fdegbc edfacg da bdecg cdbea bdcgae | dbag cdeabg gcdaeb adbg
cdgfeb cbeaf adef cfa fa aecbg fedcb acdebf bdcfga cdefbga | fdea eadf efad caefb
aedgb df cgbaed gdef bfcgda bfd efbac dgfeab debfa aegcbdf | acbfe egfd afebgd gefd
badcfe fcbg bf dfecbga faged gfadbc dfb dfgab abdcg dbceag | bf fb dafbgec fbd
bdae decgbf afcbge bdecfa afcbd edgfcab ebcaf bd dfacg dbc | ebda db cbd cbd
acfgde ae eac agbdec gadcb ebgcafd baed gfcbe cgabe bfgadc | cea fecdga ebgdac eac
cbedga cfb adcbe bfae afcdgeb cgdaf fcedab bf fcbdeg dacbf | dfceba fcdga fbc fcebda
cdafg dfgeac fc dbgcef gadbc gacfebd dcf edfgab gefad caef | fadgc facged adgefb ecgbdaf
gdcbf eabdgf gaefd fbdge afcedg bacgfe fagbedc dbea efb be | ecagfb dgaef be eb
gbecad faced abgedf cd cbfd abedcf dacgbfe cde deabf agcfe | cd edbfac cgabed daebfg
cgebaf dacbge gafed eadbgf dgcef ad fadgbce dea bgafe dafb | fegad dgeaf ad gdfae
ecfadb eagdbc afbcdge abfcgd cf bgedf agfc cfd gbfdc bcagd | fcga fcd befgd gdbfc
afcbg gfeb gfcad ecgdba cbf cafbeg bacge fb ebdfac baedcfg | fbc gabce egabc fcadg
agd gadbc da agcfed gcebad dgfcb ecabg ebcagdf eadb becfag | fgbeadc bcega geacb gceab
gaebf gfdbce aefbgd fde aefcbg ed dcaebfg agde aefdb acfdb | efd agcdebf cbgefd ebgfa
cdgfe ecbafd ebgca ad gedbcfa cad adbg cedabg egcad fcebga | gbedac adgb ecdgab daceg
efcb fcdag begdfa egcdf edf fe gfcdeb cdbega geacdbf becdg | dagfc gbadef decbg fe
bgaed agfdc fdgea fae fabcgd gcfe fe decfga afgedcb facbed | gdafe ef eacfbgd fe
ebgfca def fd ecgfbd efbda eabdg edgcfba afdc ecbfa bfdaec | abcefd fd dafc debcagf
eacbg efbdgca fdbga gde abecdg beagd cdeafg de cebd ecagbf | gaedbc gdcbafe gaecdf bgdeac
bafce cedb edacgfb fbgac fbe aedfgb be cbedfa cdefa eacfgd | be acbfg gfbac edbc
dgba cbgfdea gbe fbaegc cbedga fegdc decafb cdbge bg daecb | cadfbe bgad beadgc bgedc
abd fdbcae aedfb daec ad bacfdg dgefcb agbef cbefd cbagdef | ad dab acde da
cdagbe dagbe fageb gdfbeca gdcba edac dgcfba egd egcfbd ed | fbgcad cafdbg de facbged
dbecf egadfb cfagde da fcebga cagef dae fadec dagc dfbcaeg | da dgac bfedc ad
efa adcf fgcde acgeb bgedfa efcga degfbc aegcfdb fa efdgac | cfgea fedgc ecagf efdacgb
fecga eafgd acgefb cf gceab fbcdag gecdafb cabedg fbec gcf | agcbfd gfc cgf ceagf
egcaf ecdafgb dfgea cbafe dfebgc bgac cbagef cg gfc ecdfab | edbfgca edafg cgf gfc
afdcgb decgb fbdegca fbgae fdbaeg dgfbe gbafce df fdb efda | gcbed dafe gbfdca aefgb
gaebd baefg cfadbg fb gaedfbc gadbef cfgea bfde baf gacdeb | abf cdbagf aecbdg fagec
cfdb dcg geadbf febdg edfabcg dc bgecd eabcg fcgead cgbfde | dgc dc bdfge dcfebga
dfbcaeg fdgcae gfdab bagc gabcdf fecbgd cadgf gb fbade bdg | bdg gacb bgac ecfbdg
eg befdg fceabd badfg dbecf egbcfa bedgcf gbacefd egb dceg | beg faecdb gfdbe dbacef
cdagef edfca dgfa fca fa agedc gfcabe bdfec bdcage fbcaedg | caedbfg ecafgbd fdcega decgfba
gfc cfeb cafgdb fc aedgbfc cgdfe degfb aedcg fbegcd dfgbea | acdge fedbg agedc ebgdfa
aegdcb gde dgbfca eg bdecfga fedbgc gcbfd fgecd bfge acefd | ge debcag bgedcf bfeg
gbd eagbc cbefagd gcde aefdb gcebad cgdafb dg aegbd facbge | cdeg cged ebdaf gbd
eagbcf cba aebd cdfga cdegbf afcbedg dcbfe ab adfcb acfbde | bcfeag fgdcbe daeb bdae
gc dabcfg dcfageb acg ecabf bgadef facge gfeda ecdg fagced | gcde efdga agc fgaed
bcgdea bacfdg aeg cdabg dfeagc befgd aebc dabfgec ae degba | ebfdg egadcf aceb gbdac
ceadf defagb fg agbed dfgaebc bfaecg eacdbg afgde efg fgbd | gf egbda fabegc badfgec
begcfd fdecb fbdga ca bace cfadb egfdca cda cfaedb efabdcg | gacefd fdgba fcdebg bcae
bcga agbefc fageb ca afc debfc dafegc fdgeab abfdgec fecab | gdafceb befac fdecga ac
fce adcfg cgdefa bgcfda fdae acegf fe cgbae adgfceb cdegfb | gedacbf fdebgac deaf afde
agcf dbegf bga cfeba gfdebca fgaeb cbdefa ag egadcb cbfega | fbdge gcabef cagf ebdafc
aedg ge decbga bafce ecg gcdab degfcab gcfdeb ceabg abdcfg | cbfea ecg bafec eacfb
gfdceb cgb bcdfe gebdc egcabdf egcf bafcgd bgdae edabfc cg | gbc bgdfca cgfe gc
bg bedcf dgfaec fdbgc gcbafed fbg bfaged gadcf cgab acbgfd | agfbde bg bgcdf fgb
gafcb cdfgab abfcge cbgde bdcfae ea faeg dbgcafe ace agebc | decbaf fbacde bcagf ace
bgfdac cgabdef efdca fagce febagc cd fcd dfeacg gdce aefdb | dc dgcfba ecdagf gfacbe
bde eb egfbdc ebgfd fbdgc daebgc cagfbd gfbceda efbc aedfg | cgebadf becf cfbdg cfbedg
ebcdfag fadec daceg gbecaf eabcfd fd fad aebfc fcgbad efbd | dcefbag fceagb fdecabg adf
efgd fd bfagcd acefb febad gdbaef edcgba badge dbgaefc daf | eafbd gbcdfa gdfe edgba
cefdag bfagec bedcg da acd bcfead bdgcefa gcaef acdeg agfd | geacbf faegdc fcdgbea eacgfdb
bcedgaf bgfae cab bdcg cb gcade egdacf abdegc agbec becfad | gfcadbe adgbec gebfcda cfaedg
gf edbcafg cfge gdafe gdf cdabfg eabdg dgefac acfed fbceda | geabd cbgdfa ceadbf agbfdc
fcbgde fbged cgfdb gdebcaf cfge ebg deabf baedcg ge dfabcg | beadf ge dcbgef cfeg
eafdcb gcdfbea eag dgcba gacdef agebd dbefag deabf ge fgbe | fcbdea bgcdeaf dbgac fagcebd
dc fgebad ecd aedcfb cdga ebcagd dfbaecg adebg debcg gbecf | bcegd gcdeb dacg eagdb
cad feabgd fadegc bgcdfea gbcfa bgcda bgaced decb dc ebadg | acd adfbge cd dc
af cfbge fadecg afbgc dbaf gbdfac bdgeacf dbcga cfa gebcda | fa dabcg dafb gbceda
fbgdea gcefa agfdb fecdba egbd fdgea de bagfcd gdcbafe dae | ed eda abdefc fadgeb
fdbcga fdbae bfa adfcge gcbfaed bfeg fdage eacbd fgbaed fb | bdcfage fbeg eadfbg gbef
cfdbga fdeab gefbad bcaefd egad fdaegbc ag gcefb afg agefb | abfgecd egda bgcfe adefb
fbeda ae dae bdgfe gcadbf beac fedabc badfc ceagfd dgcbafe | bfcad gfabdc aed fbdac
fgcaed bagcef bdfc edabg efacd ebcadf fb afb abefd agfbdce | cfdb fb abf abf
fed bfaedc fceab edabg bfdea ecdagf begfdac df fceabg bfcd | cebgfa df eagbd gafced
egfdc fcg cadg dfebc dfebcga cg dgabef ebgacf dfgea gcfade | fbedc gcfed dcag fgc
fcbde fbeacgd afedb da fcegda dabg ebgaf dgfaeb dea febagc | da bfdce egfacb ad
fcdeg cdbe fgcab dceagf febcg eb cebdgf geb edfgab dbgcaef | abgcfed bdec gdcfe cfgdbe
degfb ebdacf edbfcg agdfce dbf bd bgcd dgfce gfdcbae abegf | gebfcd fgeab gecdfb gdafcbe
egacd abedg decfgba dagceb ca cabe cag dagfcb badfeg cegfd | gca caeb cfgde ca
gfa ebafd fg gafdbec gaecfb gbdfa edfg gaedbf bdgca ecadfb | fbagec fecabd caegbf fg
dfgce cgfbe cefad bfdace fcaged cdg badceg fdceagb dg afdg | gcfbe dg gadf edfabc
dfgbc cbfeda bdgcfe fdb efbg bf gcedb fdaecgb gdecba fgadc | bgdafec bgcde fbgdc agdfc
fgecd dbegfac adbfgc fa bdcage acegb eacgf efab fca fceabg | gafce af gdcbea af
fgdacb fbdec adb gfda acbdegf edbcga cfgba da cbgefa cadfb | gbcfea bgcfda da dab
fbcdg abfcdg cfegbda ed dbcaef gedcfb aecgb dcegb ced egdf | cabfgde egcdfb fbcade dgcfab
dbec fcd cegbdf dc fdacgeb abdfg baefcg gbfcd dafgce gfbec | dcf cfd fcd agefcb
fcdeg gdefb cfgadbe fb bef bfcg edfacb fecdgb gcdfea gadeb | efb feb fbcg dabge
acebd dacfg bdf agdcbfe gcafdb fcegad afgdbe bcfg bfcad bf | dbf bdaec bf febacdg
acdegf bdfa afdebg febcga gaefb fd fed dgefcab bedgf edbcg | efgdab aecdgf cedgbfa def
ecdfabg dfge cedfba fcadgb fgabd ebgfad fea egafb bcgae ef | efgdbca eagcfdb defg bfgda
efacgd bfda bcadg gab gbceadf ab cfbdga gadfc bcgfae dgbec | fgecad dbaf ba abfgdec
bcgaed fbgc edcfg dgbecf fgdae dgc cg abdcef gfcbdea ebfdc | cg cdfeb cg edbcfag
cagb fgcdeab gdebaf fcegd ecabfd acfeg ag afceb fga acgbfe | ga agf bcadfe fag
fbgde efbagc ecgd efdgabc ebdcf fdcgbe abfdg fcbead egb eg | dcge cedbgf fbgad acegfbd
febadcg cfdbge bgcef gecd ed gbdaf bfdeg deb gfabce fcbead | efdbca ed fgcbe cebdaf
eagbc cgde cafbg abdge fbdgae gacedb aec ec acefbgd abcefd | bgacf cgbfeda agbed dgec
efgbdca gfdb cadbfg dag dg degfac bcdaef gdacb bfcad agebc | gda dfagecb gcfdea dag
gefab bfde acbfgde gfdac ebfgad bfgeca aegbcd eda gfade de | gafbce gcfeabd aefgd fgbcae
gaecfb cdebgf fec ebcafgd bgecad cf debgc bfead ebfdc cgdf | cdbfe gfcd egbdca edfcgb
cfdeba bfgd gcedfa gbdae dgefcab cbega dg febadg agd bdaef | dfgb adg gecdfa fcebda
dea bgdeaf da befdc gdcfaeb ecdbga abecd gacd bgafce eagcb | aedcb facebg abfecdg bagefdc
gcebf dfbae dbgcfe egdc dgebcaf febcd bcd cagfeb fdgcba dc | bcd efcbd daefb agbdfce
fa acged bdfec afeg gcfadb bfdagce ecgafd caf acdfe dgaecb | debfc af afge adegc
bacfdg fadbe egbdfc ba bage acefd baf bgdafe fgebd gdacbef | dbfage bgedf aedgbf acedf
acgb dgcbfa dba edgbfac acdefb begdf bdgfa dceafg dcagf ba | abd dfbge abd gacb
gcdea gc agfdce egdfa egcf fbeagd aecbd dgc fcebgad cagfbd | acebd egcf defag gfadceb
fab begadc ebcad dfbea gfcdab acdfgbe fa fedgb adcfbe feca | cbgead bfcdega fba gbadce
gb efcagd fgcad cfbg bedca abg fcgbda dgbcafe acbgd bdafeg | abcdgf bcgf cgfb bg
fbcagd fcdae beacgf gf agf baecdg fecag bgfe cagdbef gbcea | edbagfc ebfg gebf bgcae
cdgfea bdeacf aefcgb dbca beafc bcgdefa ebdgf ad defab ade | dbcgefa da ade bacd
bcgaedf badecg cfegb afceg dcbf egdbfa gcedb gbf bf fgcdbe | bagfed bdagfe fdbc gefcbd
cegba bgeda cgefa cbde fegadb dagcbe acfgdb cb cbg ecbdafg | cdegabf ebgda bfgade ebgac
afbdg gdabec gcafdeb fc cfdeba bcf fgebdc cefg gcdbf ecdbg | fecg cdbefg gdbfc gfce
bgdfa egbf bcdgfa fe dfcbea aef feadgb edcag dagef afdcegb | fea cbedfa acdfgeb dfgeab
eacgfd caegdb gbfecad bdfce edcfa dgaf fea fa egdac aegbcf | af fa edbcf gdeacbf
baefg fedabcg gbfac gacbfe cb dfageb dcfag cgb bcea cfdegb | cabe eabc gfacd fgdcabe
fgdeac cgd ebdfga agefdbc bfcegd cdgbf cd cfabg dceb befgd | cgd cfgab fdgeb efbgd
aedgbf cgebda dbcagf gbf gbefd gdecf gdfabec fb eabdg feab | bf fbea cefdagb adgbe
fcgea fbgedca gbecfa efbadc efgd fcagd df cdfaeg fdc acgdb | efgac fcd dfceba fegac
egdfac cab cadbf gbdaf bc eadcf dcebagf dbecag fbdace cebf | cedabfg cgbaed bc efacbdg
be abcged afcgb ebg bgefc gebfcd cgefd efdb gdeafc daecgbf | gabedc dbeafcg debf febcadg
dgebafc cefdbg db edfb fcgdb fdceg dgecfa bdc abcfg baecdg | fegdca baecdfg bcd bd
fbgead cfab cdbgefa agcbdf aedgc fgcbd fa fagcd ecgbdf gaf | adgcebf gaf gaf af
debagfc eb fcedba ebc cgdab efdgac befa eadcf edabc gdbefc | bcdagfe fbae ecadb eabf
gaedcb bfcgd bcegf bagdcf fd aedfgbc bfd cbdga cabefd adfg | ecfbda cbfgda cfbadg fbgcd
agdcfbe bcfega cbeag ge dacfeb facged bcaef gbdac gce efbg | feabc acfbdeg aefbc gce
febcdg egdacb bedcf debfacg abdfce ba bae fbeda gdfea acfb | eadbf ab ab eab
cdfbg dfbcae dcabe egba ag cgdfea abdcg aefcdgb cga decagb | defabc edacb cbfgd ag
fgac dfgec eag cfbdge bacde ag abdgef bagfdec dcgfae agcde | aecbdgf gcaf efcgd befcdg
de gecad fbcgae gcafd dge edfbcg eadb eacfdbg bcedag acbge | gabce fcegba bgfcead ed
gbacd dbefcg fdcgae edgca afdeg aecf egc gfaedb dcfagbe ce | feac acegd caefbdg aecf
egacbd aedbc dagbc fcdagb ec bacefdg ace dcge ecfagb febda | afecgb fgdbac bcade cea
ceadgb cgaedf bfdge cfg cf fdgbc dgabc cfdabg gdcebaf bacf | gebdf fdeacg dafbgec cgf
bgfda gdcfae afce bfecgd ac acdfg afebdgc dgefc bdcaeg cag | gdbfec gcedf gfdaceb cegdab
fa fgeabdc bfga faedb fad ebgdfa daceb fgbcde fgdeb dafcge | efdab gcdfeb fa gabf
ebfc fb aedbgc ebagdf fab cgfeab gcdfeba acbeg abcfg gfdca | gbfac bgfeac bfa bcfga
fagdec gadebc cg cabfegd agdfb cbge dbeac cdfabe adcbg cgd | acgbed dgfeabc fdeacb dgbacef
fgbdc gbedaf bdgaf dfc cbfadg gfceb degcfa dc bacd gbafcde | dcf egfdca cd cdegaf
fcb aebf bf cafgb efgabc cgadbe egbadfc egbca gcfebd acdgf | beacgfd gebfcd dfbgec bf
bfgcd deb bfacdg ed fcebgd baefg dbaecfg efdc dabecg fdgbe | de gebaf dbcgfe bde
facgdbe gda ebdfag gabdf da cagfeb gebaf deaf dbagec dcfbg | egfba dgebca aefd cgdbf
deabg eg gdfacb bdfea egd gebfdca ecdgab acge dacbg cefgbd | eg dgcbef agcdb fadbceg
cafbged feacb gbafd dc gfdc agdcbf fcabd deabgf cad acgedb | fdcba egbfdac cad dca
dfagce fbd eabdfc gdfeb ebgfa dfabcge fdgce cedfbg bcgd bd | cdbg agbcefd db db
fdagec fcg gf gbace efbgacd ecgbfd dfcea caefg dagf dbecaf | acdegfb fg gbdfaec fadg
edfag bgfced dga ag cfbgdea bfdcag bfged decfa afedbg bgae | abeg dgaef ag edfgb
dcaegb fageb cdga begda adbce gd dge gbecafd cabfed cgfebd | gdaebc ged egd dcga
cfb agebfc fegb fb adcef afbec ebgdca bafdgc gbcea fdbeagc | ebfg gabce fbc agfdceb
fdcega cbgfea febg agdebfc cfe afecb gbcae ef bcdfa acgedb | fbgdeac egbf acfgeb bfge
fbadge dfgebc fbgacde bg fdage afdcge cedba agbf bge dgbea | adgbe fgba gabf fceagd
cfbda bgedca fgdcba abcfe dc agbfd dbc fdgc facbged dagfeb | cd fbcda fdcab fdgc
cdefa fbgdce aebdg geacd ebcdgfa gc cdg baegdc febdag gbac | fdeca cg dgfbcae bcgfde
gcadeb ef ecbfga acbgfed fbdga bcade dafcbe dcfe deabf feb | fdegacb agdbf fgbedac fcdbaeg
adgc fac ca gdfcae cfdegb gcdef adcfbe dgefcba cagef abgef | gcadbfe feabdc cdefg bgdeafc
cfdeba dega fga gadfec cdfabeg aecbfg cbdfg ag faedc dfcag | ag ga acfed cebfad
efcgb feagdc gdfbea fadc ac cea gadbfce cfgae aedgbc geafd | fcgeabd cafeg cbadge ca
ebfda cfgbea cgdbef fbadgec dgcb cedfga dg fdbeg efcgb gfd | fgdeb bfgcde ebfdg dg
dcafg facgdb bgfa dbacf ba gdcefa ecfdb cfegdba bac acedbg | gcbdaf fbadc begdac dgcbaf
eagf agedbcf acdegb abg gcfba fcegb befgcd fbcda ag ebcfag | dbcegfa bfecg cafdebg faeg
fbgcd cba fgacdb gabcdef fbgdec gdabc gacf bafdec begad ac | eacbdf badge acb becfad
eacbd dabfec dbgfeac ag eagdb fcdbag bga agec dbfge bacged | agecdb bag gebcdaf cdbea
bfgcd bcdegfa fdabgc da efgca cfagd efbdca cda dgfecb bgda | acdebf badfcg abdg cafgd
efcbgd cadefg cfegd dcgba cafedgb cagfd gaf acef fa bedafg | agf fcedg gefdcb cfdge
afdceg dcaf fd dfg aefgc gdbecf cafbdeg dbage ecagfb deafg | adefgc bfdecga fdg cefag
bfdacg dagbf abdefcg acfg fbcda beafdc egdab cfdegb gfd gf | bcafgd efgcabd cfga dcaegfb
dbage dfagbe cadfeb gfeb bae fabgdc be bafdg cdgea bgdfaec | fedacbg eb dfcbea eab
gebfd cfedga begfa dagbfc fgeadcb ecdgbf bced edfgc dgb db | dbec gadcfb db aefbg
dbcg fbagc bcf bc cdaebgf aegbdf faecg fdcaeb cdafbg afbgd | adfbg fadebgc dgbafc febagd

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include("utils.jl")
function parse_input(filename)
map(non_empty_lines(filename)) do line
notes, output = map(split, split(line, "|"))
end
end
function count_unique(strings)
length(filter(x -> x in (2,3,4,7), length.(strings)))
end
function solution8_1()
sum(map(count_unique, getindex.(parse_input("8.data"), 2)))
end
function solution8_2()
summe = 0
for (notes, output) in parse_input("8.data")
recordings = [notes;output]
# find length 2 => c,f
cf = first(filter(x->length(x)==2, recordings))
# find length 3 => c,f,a => a
cfa = first(filter(x->length(x)==3, recordings))
a = setdiff(cfa, cf)[1]
# find length 4 => c,f,d,b => d,b
cfdb = first(filter(x->length(x)==4, recordings))
db = setdiff(cfdb, cf)
d = "X"
b = "X"
f = "X"
c = "X"
# find length 5 =>
for fives in filter(x->length(x)==5, recordings)
common = intersect(fives, db)
if length(common) == 1
# is there one missing d,b? => present is d missing is b
d = common[1]
b = setdiff(db, d)[1]
else
# is there one with d AND b => has one of c,f => f (and thus c)
f = intersect(fives, cf)[1]
c = setdiff(cf, f)[1]
end
end
abcdf = "$a$b$c$d$f"
g = "X"
for sixes in filter(x->length(x)==6, recordings)
new = setdiff(sixes, "$a$b$c$d$f")
if length(new) == 1
g = new[1]
end
end
abcdfg = "$a$b$c$d$f$g"
e = "x"
for anything in recordings
new = setdiff(anything, abcdfg)
if length(new) == 1
e = new[1]
break
end
end
digits = Dict(sort(collect("$a$b$c$e$f$g")) => 0,
sort(collect("$c$f")) => 1,
sort(collect("$a$c$d$e$g")) => 2,
sort(collect("$a$c$d$f$g")) => 3,
sort(collect("$b$c$d$f")) => 4,
sort(collect("$a$b$d$f$g")) => 5,
sort(collect("$a$b$d$e$f$g")) => 6,
sort(collect("$a$c$f")) => 7,
sort(collect("$a$b$c$d$e$f$g")) => 8,
sort(collect("$a$b$c$d$f$g")) => 9)
result = 0
power = 0
for digit in reverse(output)
value = get(digits, sort(collect(digit)), -1)
result += value * 10^power
power += 1
end
# println("$(join(notes, ' ')) | $(join(output, ' ')): $result")
summe += result
end
summe
end
solution8_2()

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be cfbegad cbdgef fgaecd cgeb fdcge agebfd fecdb fabcd edb | fdgacbe cefdb cefbgd gcbe
edbfga begcd cbg gc gcadebf fbgde acbgfd abcde gfcbed gfec | fcgedb cgb dgebacf gc
fgaebd cg bdaec gdafb agbcfd gdcbef bgcad gfac gcb cdgabef | cg cg fdcagb cbg
fbegcd cbd adcefb dageb afcb bc aefdc ecdab fgdeca fcdbega | efabcd cedba gadfec cb
aecbfdg fbg gf bafeg dbefa fcge gcbea fcaegb dgceab fcbdga | gecf egdcabf bgf bfgea
fgeab ca afcebg bdacfeg cfaedg gcfdb baec bfadeg bafgc acf | gebdcfa ecba ca fadegcb
dbcfg fgd bdegcaf fgec aegbdf ecdfab fbedc dacgb gdcebf gf | cefg dcbef fcge gbcadfe
bdfegc cbegaf gecbf dfcage bdacg ed bedf ced adcbefg gebcd | ed bcgafe cdgba cbgef
egadfb cdbfeg cegd fecab cgb gbdefca cg fgcdab egfdb bfceg | gbdfcae bgc cg cgb
gcafb gcf dcaebfg ecagb gf abcdeg gaef cafbge fdbac fegbdc | fgae cfgab fg bagce

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acedgfb cdfbe gcdfa fbcad dab cefabd cdfgeb eafb cagedb ab | cdfeb fcadb cdfeb cdbaf

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include("utils.jl")
function parse_input(filename)
map(x->parse.(Int, x), split.(non_empty_lines(filename), ""))
end
function sink_locations(width, height, heights)
sinks = []
for x in 1:width
for y in 1:height
minimum = true
if x > 1
minimum &= heights[x - 1, y] > heights[x, y]
end
if x < width
minimum &= heights[x + 1, y] > heights[x, y]
end
if y > 1
minimum &= heights[x, y - 1] > heights[x, y]
end
if y < height
minimum &= heights[x, y + 1] > heights[x, y]
end
if minimum
push!(sinks, (x, y))
end
end
end
sinks
end
function solution9_1()
input = collect(parse_input("9_ex.data"))
width = length(input[1])
height = length(input)
heights = reshape(reduce(vcat, input),(width,height))
sinks = sink_locations(width, height, heights)
risk = 0
for sink in sinks
risk += heights[sink[1], sink[2]] + 1
end
risk
end
function basin_size(x, y, width, height, heights)
heights = copy(heights)
to_visit = [CartesianIndex(x, y)]
visited = []
while length(to_visit) > 0
current = pop!(to_visit)
if current in visited
continue
end
push!(visited, current)
if heights[current] == 9
continue
end
if current[1] > 1
push!(to_visit, CartesianIndex(-1, 0) + current)
end
if current[1] < width
push!(to_visit, CartesianIndex(+1, 0) + current)
end
if current[2] > 1
push!(to_visit, CartesianIndex(0, -1) + current)
end
if current[2] < height
push!(to_visit, CartesianIndex(0, +1) + current)
end
heights[current] = -1
end
length(filter(==(-1), heights))
end
function solution9_2()
input = collect(parse_input("9.data"))
width = length(input[1])
height = length(input)
heights = reshape(reduce(vcat, input),(width,height))
sizes = map(sink_locations(width, height, heights)) do sink
size = basin_size(sink[1], sink[2], width, height, heights)
end
reduce(*, Iterators.take(reverse(sort(sizes)), 3))
end
solution9_2()

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2199943210
3987894921
9856789892
8767896789
9899965678

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function non_empty_lines(path::String)
Iterators.filter(!isempty, eachline(path))
end