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hauleth.dev
1<!-- livebook:{"persist_outputs":true} -->
2
3# Day 17
4
5```elixir
6Mix.install([
7 {:kino_aoc, git: "https://github.com/ljgago/kino_aoc"}
8])
9```
10
11<!-- livebook:{"output":true} -->
12
13```
14* Getting kino_aoc (https://github.com/ljgago/kino_aoc)
15remote: Enumerating objects: 103, done.
16remote: Counting objects: 100% (103/103), done.
17remote: Compressing objects: 100% (68/68), done.
18remote: Total 103 (delta 40), reused 84 (delta 25), pack-reused 0
19origin/HEAD set to main
20Resolving Hex dependencies...
21Resolution completed in 0.336s
22New:
23 castore 1.0.3
24 finch 0.16.0
25 hpax 0.1.2
26 jason 1.4.1
27 kino 0.10.0
28 mime 2.0.5
29 mint 1.5.1
30 nimble_options 1.0.2
31 nimble_pool 1.0.0
32 req 0.3.10
33 table 0.1.2
34 telemetry 1.2.1
35* Getting kino (Hex package)
36* Getting req (Hex package)
37* Getting finch (Hex package)
38* Getting jason (Hex package)
39* Getting mime (Hex package)
40* Getting castore (Hex package)
41* Getting mint (Hex package)
42* Getting nimble_options (Hex package)
43* Getting nimble_pool (Hex package)
44* Getting telemetry (Hex package)
45* Getting hpax (Hex package)
46* Getting table (Hex package)
47==> table
48Compiling 5 files (.ex)
49Generated table app
50==> mime
51Compiling 1 file (.ex)
52Generated mime app
53==> nimble_options
54Compiling 3 files (.ex)
55Generated nimble_options app
56==> kino
57Compiling 41 files (.ex)
58Generated kino app
59===> Analyzing applications...
60===> Compiling telemetry
61==> jason
62Compiling 10 files (.ex)
63Generated jason app
64==> hpax
65Compiling 4 files (.ex)
66Generated hpax app
67==> nimble_pool
68Compiling 2 files (.ex)
69Generated nimble_pool app
70==> castore
71Compiling 1 file (.ex)
72Generated castore app
73==> mint
74Compiling 1 file (.erl)
75Compiling 19 files (.ex)
76Generated mint app
77==> finch
78Compiling 13 files (.ex)
79Generated finch app
80==> req
81Compiling 5 files (.ex)
82Generated req app
83==> kino_aoc
84Compiling 3 files (.ex)
85Generated kino_aoc app
86```
87
88<!-- livebook:{"output":true} -->
89
90```
91:ok
92```
93
94## Section
95
96<!-- livebook:{"attrs":{"day":"17","session_secret":"ADVENT_OF_CODE_SESSION","variable":"puzzle_input","year":"2022"},"chunks":null,"kind":"Elixir.KinoAOC.HelperCell","livebook_object":"smart_cell"} -->
97
98```elixir
99{:ok, puzzle_input} =
100 KinoAOC.download_puzzle("2022", "17", System.fetch_env!("LB_ADVENT_OF_CODE_SESSION"))
101```
102
103<!-- livebook:{"output":true} -->
104
105```
106{:ok,
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108```
109
110```elixir
111well = [0, 0, 0, 0, 0, 0, 0]
112```
113
114<!-- livebook:{"output":true} -->
115
116```
117[0, 0, 0, 0, 0, 0, 0]
118```
119
120```elixir
121defmodule Tetris do
122 def fit(well, n, :dash) when n in 0..3 do
123 max =
124 well
125 |> Enum.drop(n)
126 |> Enum.take(4)
127 |> Enum.max()
128
129 well
130 |> List.replace_at(n, max + 1)
131 |> List.replace_at(n + 1, max + 1)
132 |> List.replace_at(n + 2, max + 1)
133 |> List.replace_at(n + 3, max + 1)
134 end
135
136 def fit(well, n, :plus) when n in 0..4 do
137 bottom =
138 well
139 |> Enum.drop(n)
140 |> Enum.take(3)
141 |> case do
142 [a, b, c] when b < a and b < c -> max(a, b) - 1
143 [_, b, _] -> b
144 end
145
146 well
147 |> List.replace_at(n, bottom + 2)
148 |> List.replace_at(n + 1, bottom + 3)
149 |> List.replace_at(n + 2, bottom + 2)
150 end
151
152 def fit(well, n, :l), do: well
153
154 def fit(well, n, :i), do: well
155
156 def fit(well, n, :o), do: well
157end
158```
159
160<!-- livebook:{"output":true} -->
161
162```
163warning: variable "n" is unused (if the variable is not meant to be used, prefix it with an underscore)
164 2022/day17.livemd#cell:yqwk3yzwldnf4hstvs2cj6qm5r3go5yp:32: Tetris.fit/3
165
166warning: variable "n" is unused (if the variable is not meant to be used, prefix it with an underscore)
167 2022/day17.livemd#cell:yqwk3yzwldnf4hstvs2cj6qm5r3go5yp:34: Tetris.fit/3
168
169warning: variable "n" is unused (if the variable is not meant to be used, prefix it with an underscore)
170 2022/day17.livemd#cell:yqwk3yzwldnf4hstvs2cj6qm5r3go5yp:36: Tetris.fit/3
171
172```
173
174<!-- livebook:{"output":true} -->
175
176```
177{:module, Tetris, <<70, 79, 82, 49, 0, 0, 10, ...>>, {:fit, 3}}
178```
179
180```elixir
181Tetris.fit([2, 1, 2, 0, 0, 0, 0], 0, :plus)
182```
183
184<!-- livebook:{"output":true} -->
185
186```
187[3, 4, 3, 0, 0, 0, 0]
188```