add day 12a and day 18a
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parent
092bb05312
commit
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6 changed files with 1851 additions and 0 deletions
1000
23/elixir/inputs/day12.txt
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1000
23/elixir/inputs/day12.txt
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6
23/elixir/inputs/day12_example.txt
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6
23/elixir/inputs/day12_example.txt
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@ -0,0 +1,6 @@
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???.### 1,1,3
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.??..??...?##. 1,1,3
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?#?#?#?#?#?#?#? 1,3,1,6
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????.#...#... 4,1,1
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????.######..#####. 1,6,5
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?###???????? 3,2,1
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618
23/elixir/inputs/day18.txt
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23/elixir/inputs/day18.txt
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U 11 (#508b33)
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L 4 (#2b63a2)
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U 9 (#0a6333)
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U 5 (#4ad5c3)
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U 11 (#4d5af3)
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R 6 (#525352)
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U 8 (#165b63)
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U 10 (#5dbb13)
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U 7 (#5ee763)
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U 8 (#5756d1)
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D 10 (#22af01)
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R 9 (#331712)
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U 7 (#24fea1)
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R 7 (#34db30)
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D 8 (#609e53)
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D 5 (#18e851)
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D 4 (#275f23)
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||||
R 4 (#6901b2)
|
||||
U 15 (#058f43)
|
||||
R 5 (#4cad42)
|
||||
U 8 (#5ad323)
|
||||
R 6 (#4180a2)
|
||||
U 3 (#408241)
|
||||
R 14 (#3c0f62)
|
||||
U 3 (#055fa1)
|
||||
R 9 (#3f6652)
|
||||
U 3 (#7414f1)
|
||||
R 3 (#11ae90)
|
||||
U 9 (#098c31)
|
||||
L 13 (#4a7ad0)
|
||||
U 6 (#5dfb41)
|
||||
R 13 (#1f4c50)
|
||||
U 8 (#165861)
|
||||
R 3 (#2d68c2)
|
||||
U 2 (#715cb1)
|
||||
R 7 (#2b7e62)
|
||||
D 6 (#241511)
|
||||
R 9 (#4e1152)
|
||||
D 8 (#26ec71)
|
||||
R 5 (#247332)
|
||||
D 14 (#051611)
|
||||
L 9 (#09f002)
|
||||
D 16 (#366e31)
|
||||
L 3 (#0d6b12)
|
||||
D 2 (#6dc513)
|
||||
L 6 (#1eccb2)
|
||||
D 7 (#6d5ce3)
|
||||
R 8 (#4a81b2)
|
||||
D 9 (#02b891)
|
||||
L 8 (#282492)
|
||||
D 5 (#02b893)
|
||||
R 8 (#1c9a22)
|
||||
D 13 (#5a47b3)
|
||||
R 7 (#4287e2)
|
||||
D 11 (#0aecb3)
|
||||
R 3 (#285d50)
|
||||
D 3 (#2fba33)
|
||||
L 14 (#1115b0)
|
||||
D 5 (#42d373)
|
||||
L 5 (#610760)
|
||||
U 11 (#42d371)
|
||||
L 14 (#13cda0)
|
||||
U 3 (#2e73f3)
|
||||
L 11 (#424cf0)
|
||||
U 9 (#0e40e3)
|
||||
L 5 (#2ca0f2)
|
||||
D 11 (#6284d3)
|
||||
L 4 (#4f7e52)
|
||||
D 12 (#00d2d3)
|
||||
L 8 (#0d1642)
|
||||
D 8 (#1f9c23)
|
||||
L 6 (#6648b2)
|
||||
D 9 (#0101c1)
|
||||
L 9 (#2cbc52)
|
||||
D 3 (#094dc1)
|
||||
L 8 (#35d1a2)
|
||||
D 2 (#66e3d1)
|
||||
L 10 (#20ab92)
|
||||
D 10 (#168e31)
|
||||
L 8 (#710542)
|
||||
U 12 (#1e5051)
|
||||
L 8 (#248cc2)
|
||||
U 3 (#3fbc61)
|
||||
L 6 (#64dc10)
|
||||
U 10 (#2b81c1)
|
||||
L 11 (#69f840)
|
||||
D 10 (#4eae41)
|
||||
L 4 (#5a3aa0)
|
||||
D 8 (#2bbb71)
|
||||
L 13 (#574fc2)
|
||||
D 3 (#1d2801)
|
||||
L 3 (#1fa5d2)
|
||||
D 12 (#04b8f1)
|
||||
L 3 (#136922)
|
||||
D 4 (#4ec981)
|
||||
L 11 (#042042)
|
||||
D 5 (#319921)
|
||||
L 15 (#5bd8c2)
|
||||
D 3 (#216d11)
|
||||
L 3 (#110372)
|
||||
U 7 (#530633)
|
||||
L 2 (#2db3d2)
|
||||
U 10 (#3f8131)
|
||||
L 4 (#047412)
|
||||
U 8 (#1f5091)
|
||||
L 4 (#07efb2)
|
||||
U 8 (#02d151)
|
||||
L 4 (#0503b2)
|
||||
U 4 (#517631)
|
||||
L 12 (#11df72)
|
||||
U 4 (#273981)
|
||||
L 3 (#5a6a72)
|
||||
D 4 (#1ac7a1)
|
||||
L 8 (#0aa4c2)
|
||||
D 4 (#1d29c3)
|
||||
R 13 (#5f2750)
|
||||
D 9 (#592b53)
|
||||
L 13 (#5f2752)
|
||||
D 8 (#1ff393)
|
||||
L 7 (#2b1a32)
|
||||
D 4 (#20d203)
|
||||
L 18 (#2724e2)
|
||||
D 4 (#486343)
|
||||
R 19 (#2ea0e2)
|
||||
D 2 (#486341)
|
||||
R 14 (#33e032)
|
||||
D 6 (#1fb073)
|
||||
L 17 (#2a4422)
|
||||
U 4 (#4b9413)
|
||||
L 6 (#1563d0)
|
||||
D 8 (#065ed1)
|
||||
L 8 (#317df0)
|
||||
U 8 (#02fac3)
|
||||
L 12 (#2f35c0)
|
||||
D 4 (#02fac1)
|
||||
R 9 (#5d1770)
|
||||
D 7 (#065ed3)
|
||||
R 7 (#16fa70)
|
||||
D 17 (#35b073)
|
||||
R 7 (#0c5930)
|
||||
D 5 (#400163)
|
||||
L 9 (#2a1ab2)
|
||||
D 11 (#3bc7a3)
|
||||
L 14 (#269eb2)
|
||||
D 9 (#1ef343)
|
||||
L 10 (#269eb0)
|
||||
U 4 (#2d4f23)
|
||||
R 6 (#38f922)
|
||||
U 9 (#5a3f31)
|
||||
L 3 (#1269d2)
|
||||
U 8 (#2dcad1)
|
||||
L 7 (#2296c2)
|
||||
U 9 (#3b97a3)
|
||||
R 10 (#24c7b2)
|
||||
U 3 (#67d443)
|
||||
L 6 (#39a682)
|
||||
U 8 (#1c8c93)
|
||||
L 6 (#75d832)
|
||||
U 3 (#11b393)
|
||||
L 3 (#441282)
|
||||
U 9 (#4c45b3)
|
||||
L 11 (#385732)
|
||||
U 11 (#1c1a93)
|
||||
L 7 (#31b132)
|
||||
U 8 (#25ae53)
|
||||
14
23/elixir/inputs/day18_example.txt
Normal file
14
23/elixir/inputs/day18_example.txt
Normal file
|
|
@ -0,0 +1,14 @@
|
|||
R 6 (#70c710)
|
||||
D 5 (#0dc571)
|
||||
L 2 (#5713f0)
|
||||
D 2 (#d2c081)
|
||||
R 2 (#59c680)
|
||||
D 2 (#411b91)
|
||||
L 5 (#8ceee2)
|
||||
U 2 (#caa173)
|
||||
L 1 (#1b58a2)
|
||||
U 2 (#caa171)
|
||||
R 2 (#7807d2)
|
||||
U 3 (#a77fa3)
|
||||
L 2 (#015232)
|
||||
U 2 (#7a21e3)
|
||||
103
23/elixir/lib/days/day12.ex
Normal file
103
23/elixir/lib/days/day12.ex
Normal file
|
|
@ -0,0 +1,103 @@
|
|||
defmodule AOC.Day12 do
|
||||
use AOC.Day, day: 12, input: "example"
|
||||
# use AOC.Day, day: 12
|
||||
|
||||
def parse_input(lines) do
|
||||
Enum.map(lines, fn line ->
|
||||
[conditions, groups] = String.split(line, " ")
|
||||
conditions = String.to_charlist(conditions)
|
||||
|
||||
groups =
|
||||
groups
|
||||
|> String.split(",")
|
||||
|> Enum.map(&String.to_integer/1)
|
||||
|
||||
{conditions, groups}
|
||||
end)
|
||||
end
|
||||
|
||||
def possible_unknown_spring_conditions(unknown_spring_count) when unknown_spring_count == 0,
|
||||
do: [[]]
|
||||
|
||||
def possible_unknown_spring_conditions(unknown_spring_count) do
|
||||
next_list = possible_unknown_spring_conditions(unknown_spring_count - 1)
|
||||
Enum.map(next_list, &[true | &1]) ++ Enum.map(next_list, &[false | &1])
|
||||
end
|
||||
|
||||
def apply_spring_configuration([], []), do: []
|
||||
|
||||
def apply_spring_configuration([?. | conditions], spring_configuration) do
|
||||
[?. | apply_spring_configuration(conditions, spring_configuration)]
|
||||
end
|
||||
|
||||
def apply_spring_configuration([?# | conditions], spring_configuration) do
|
||||
[?# | apply_spring_configuration(conditions, spring_configuration)]
|
||||
end
|
||||
|
||||
def apply_spring_configuration([?? | conditions], [true | spring_configuration]) do
|
||||
[?. | apply_spring_configuration(conditions, spring_configuration)]
|
||||
end
|
||||
|
||||
def apply_spring_configuration([?? | conditions], [false | spring_configuration]) do
|
||||
[?# | apply_spring_configuration(conditions, spring_configuration)]
|
||||
end
|
||||
|
||||
def valid_spring_conditions?(conditions, []) do
|
||||
not Enum.member?(conditions, ?#)
|
||||
end
|
||||
|
||||
def valid_spring_conditions?([?. | conditions], groups) do
|
||||
valid_spring_conditions?(conditions, groups)
|
||||
end
|
||||
|
||||
def valid_spring_conditions?(conditions, [count | groups]) do
|
||||
{left, right} = Enum.split(conditions, count)
|
||||
|
||||
length(left) == count and Enum.all?(left, &(&1 == ?#)) and
|
||||
(length(right) == 0 or hd(right) == ?.) and valid_spring_conditions?(right, groups)
|
||||
end
|
||||
|
||||
def generate_arrangements(conditions, groups) do
|
||||
unknown_spring_count = Enum.count(conditions, &(&1 == ??))
|
||||
|
||||
possible_unknown_spring_conditions(unknown_spring_count)
|
||||
|> Stream.map(fn spring_configuration ->
|
||||
apply_spring_configuration(conditions, spring_configuration)
|
||||
end)
|
||||
|> Stream.filter(fn possible_conditions ->
|
||||
valid_spring_conditions?(possible_conditions, groups)
|
||||
end)
|
||||
|
||||
# |> Enum.to_list()
|
||||
end
|
||||
|
||||
def calculate_arrangement_counts(input, duplicates \\ 1) do
|
||||
input
|
||||
|> Enum.map(fn {conditions, groups} ->
|
||||
conditions =
|
||||
conditions
|
||||
|> List.duplicate(duplicates)
|
||||
|> Enum.intersperse(~c"?")
|
||||
|> List.flatten()
|
||||
|
||||
groups =
|
||||
groups
|
||||
|> List.duplicate(duplicates)
|
||||
|> List.flatten()
|
||||
|
||||
generate_arrangements(conditions, groups)
|
||||
end)
|
||||
|> Enum.map(&Enum.count/1)
|
||||
|> Enum.sum()
|
||||
end
|
||||
|
||||
def part1(input) do
|
||||
calculate_arrangement_counts(input)
|
||||
end
|
||||
|
||||
def part2(input) do
|
||||
calculate_arrangement_counts(input, 5)
|
||||
end
|
||||
end
|
||||
|
||||
# NOTE TO SELF: memoize the brute force...
|
||||
110
23/elixir/lib/days/day18.ex
Normal file
110
23/elixir/lib/days/day18.ex
Normal file
|
|
@ -0,0 +1,110 @@
|
|||
defmodule AOC.Day18 do
|
||||
# use AOC.Day, day: 18, input: "example"
|
||||
use AOC.Day, day: 18
|
||||
|
||||
def parse_input(lines) do
|
||||
Enum.map(lines, fn line ->
|
||||
%{"direction" => direction, "length" => length, "color" => color} =
|
||||
Regex.named_captures(
|
||||
~r/^(?<direction>[UDLR]) (?<length>\d+) \(\#(?<color>[[:alnum:]]+)\)$/,
|
||||
line
|
||||
)
|
||||
|
||||
{String.to_atom(direction), String.to_integer(length), color}
|
||||
end)
|
||||
end
|
||||
|
||||
def dig_stretch({y, x}, direction, length) do
|
||||
Enum.map(1..length, fn n ->
|
||||
case direction do
|
||||
:U -> {y - n, x}
|
||||
:R -> {y, x + n}
|
||||
:D -> {y + n, x}
|
||||
:L -> {y, x - n}
|
||||
end
|
||||
end)
|
||||
end
|
||||
|
||||
def execute_dig_plan(dig_plan) do
|
||||
Enum.reduce(dig_plan, {%{{0, 0} => true}, {0, 0}}, fn {direction, length, _color},
|
||||
{terrain, position} ->
|
||||
stretch = dig_stretch(position, direction, length)
|
||||
|
||||
terrain =
|
||||
Enum.reduce(stretch, terrain, fn new_position, acc ->
|
||||
Map.put(acc, new_position, true)
|
||||
end)
|
||||
|
||||
new_position = stretch |> Enum.reverse() |> hd()
|
||||
|
||||
{terrain, new_position}
|
||||
end)
|
||||
end
|
||||
|
||||
def print_terrain(terrain) do
|
||||
max_y = terrain |> Enum.map(&elem(&1, 0)) |> Enum.map(&elem(&1, 0)) |> Enum.max()
|
||||
max_x = terrain |> Enum.map(&elem(&1, 0)) |> Enum.map(&elem(&1, 1)) |> Enum.max()
|
||||
min_y = terrain |> Enum.map(&elem(&1, 0)) |> Enum.map(&elem(&1, 0)) |> Enum.min()
|
||||
min_x = terrain |> Enum.map(&elem(&1, 0)) |> Enum.map(&elem(&1, 1)) |> Enum.min()
|
||||
|
||||
Enum.each(min_y..max_y, fn y ->
|
||||
Enum.map(min_x..max_x, fn x ->
|
||||
case Map.fetch(terrain, {y, x}) do
|
||||
:error -> "."
|
||||
_ -> "#"
|
||||
end
|
||||
end)
|
||||
|> Enum.join()
|
||||
|> IO.puts()
|
||||
end)
|
||||
end
|
||||
|
||||
def find_interior_space(terrain) do
|
||||
max_x = terrain |> Enum.map(&elem(&1, 0)) |> Enum.map(&elem(&1, 1)) |> Enum.max()
|
||||
min_x = terrain |> Enum.map(&elem(&1, 0)) |> Enum.map(&elem(&1, 1)) |> Enum.min()
|
||||
|
||||
edge_x =
|
||||
Enum.find(min_x..max_x, fn x ->
|
||||
case Map.fetch(terrain, {2, x}) do
|
||||
:error -> false
|
||||
_ -> true
|
||||
end
|
||||
end)
|
||||
|
||||
edge_x + 1
|
||||
end
|
||||
|
||||
def flood_fill_terrain(terrain) do
|
||||
interior_x = find_interior_space(terrain)
|
||||
|
||||
flood_fill_terrain(terrain, {1, interior_x})
|
||||
end
|
||||
|
||||
def flood_fill_terrain(terrain, {y, x}) do
|
||||
[{y - 1, x}, {y, x + 1}, {y + 1, x}, {y, x - 1}]
|
||||
|> Enum.reduce(terrain, fn next_position, acc ->
|
||||
case Map.fetch(acc, next_position) do
|
||||
:error ->
|
||||
acc
|
||||
|> Map.put(next_position, true)
|
||||
|> flood_fill_terrain(next_position)
|
||||
|
||||
_ ->
|
||||
acc
|
||||
end
|
||||
end)
|
||||
end
|
||||
|
||||
def part1(dig_plan) do
|
||||
execute_dig_plan(dig_plan)
|
||||
|> elem(0)
|
||||
# |> tap(&print_terrain/1)
|
||||
|> flood_fill_terrain()
|
||||
# |> tap(&print_terrain/1)
|
||||
|> Enum.count()
|
||||
end
|
||||
|
||||
def part2(_input) do
|
||||
"TODO"
|
||||
end
|
||||
end
|
||||
Loading…
Reference in a new issue