From 5820ac1c3b18e89774d7b1435f80b0daaf4f2628 Mon Sep 17 00:00:00 2001
From: sloane <1699281+sloanelybutsurely@users.noreply.github.com>
Date: Sat, 2 Dec 2023 09:37:03 -0500
Subject: [PATCH] solve 2023 2.1
---
2023/README.md | 3 +-
2023/elixir/.formatter.exs | 1 +
2023/elixir/lib/2023/2.ex | 99 ++++++++++++++++++++++++++++++++++++++
2023/elixir/mix.exs | 3 +-
2023/elixir/mix.lock | 1 +
README.md | 2 +-
6 files changed, 106 insertions(+), 3 deletions(-)
create mode 100644 2023/elixir/lib/2023/2.ex
diff --git a/2023/README.md b/2023/README.md
index 5fcd2ac..600f612 100644
--- a/2023/README.md
+++ b/2023/README.md
@@ -2,7 +2,7 @@
| S | M | T | W | T | F | S |
| :-: | :-: | :-: | :-: | :-: | :-: | :-: |
-| | | | | | [1] | 2 |
+| | | | | | [1] | [2] |
| 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 17 | 18 | 19 | 20 | 21 | 22 | 23 |
@@ -10,3 +10,4 @@
[1]: ./elixir/lib/2023/1.ex
+[2]: ./elixir/lib/2023/2.ex
diff --git a/2023/elixir/.formatter.exs b/2023/elixir/.formatter.exs
index d2cda26..42fbbb2 100644
--- a/2023/elixir/.formatter.exs
+++ b/2023/elixir/.formatter.exs
@@ -1,4 +1,5 @@
# Used by "mix format"
[
+ inport_deps: [:nimble_parsec],
inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
]
diff --git a/2023/elixir/lib/2023/2.ex b/2023/elixir/lib/2023/2.ex
new file mode 100644
index 0000000..6819069
--- /dev/null
+++ b/2023/elixir/lib/2023/2.ex
@@ -0,0 +1,99 @@
+import AOC
+
+aoc 2023, 2 do
+ import NimbleParsec
+
+ dice =
+ integer(min: 1)
+ |> ignore(string(" "))
+ |> choice([
+ string("blue"),
+ string("green"),
+ string("red")
+ ])
+ |> label("die")
+ |> optional(ignore(string(", ")))
+ |> times(min: 1, max: 3)
+ |> label("dice")
+
+ game =
+ ignore(string("Game "))
+ |> integer(min: 1)
+ |> ignore(string(": "))
+ |> label("game")
+
+ defparsec(:game_p, game)
+ defparsec(:dice_p, dice)
+
+ def read_game(input) do
+ case game_p(input) do
+ {:ok, [id], rest, _, _, _} ->
+ dice_and_rest =
+ Stream.unfold(rest, fn
+ nil ->
+ nil
+
+ rest ->
+ case dice_p(rest) do
+ {:ok, dice, rest, _, _, _} ->
+ dice =
+ dice
+ |> Enum.chunk_every(2)
+ |> Enum.map(&Enum.reverse/1)
+ |> Enum.map(&List.to_tuple/1)
+ |> Enum.into(%{})
+
+ {dice, String.replace_prefix(rest, "; ", "")}
+
+ {:error, _, rest, _, _, _} ->
+ {rest, nil}
+ end
+ end)
+ |> Enum.to_list()
+
+ [rest | dice] = Enum.reverse(dice_and_rest)
+
+ {:ok, {id, dice, rest}}
+
+ _ ->
+ :halt
+ end
+ end
+
+ def read_games(input) do
+ Stream.unfold(input, fn rest ->
+ input =
+ rest
+ |> String.replace_prefix("\n", "")
+
+ case read_game(input) do
+ {:ok, {id, dice, rest}} ->
+ {{id, dice}, rest}
+
+ _ ->
+ nil
+ end
+ end)
+ end
+
+ def p1(input) do
+ red_max = 12
+ green_max = 13
+ blue_max = 14
+
+ input
+ |> read_games()
+ |> Stream.reject(fn {_id, dice} ->
+ dice
+ |> Enum.any?(fn d ->
+ Map.get(d, "red", 0) > red_max or Map.get(d, "green", 0) > green_max or
+ Map.get(d, "blue", 0) > blue_max
+ end)
+ end)
+ |> Stream.map(&elem(&1, 0))
+ |> Enum.sum()
+ end
+
+ def p2(_input) do
+ end
+end
diff --git a/2023/elixir/mix.exs b/2023/elixir/mix.exs
index dc60627..20c81ac 100644
--- a/2023/elixir/mix.exs
+++ b/2023/elixir/mix.exs
@@ -21,7 +21,8 @@ defmodule AdventOfCode.MixProject do
# Run "mix help deps" to learn about dependencies.
defp deps do
[
- {:advent_of_code_utils, "~> 4.0.0"}
+ {:advent_of_code_utils, "~> 4.0.0"},
+ {:nimble_parsec, "~> 1.4.0"}
]
end
end
diff --git a/2023/elixir/mix.lock b/2023/elixir/mix.lock
index 77df8e0..34e286f 100644
--- a/2023/elixir/mix.lock
+++ b/2023/elixir/mix.lock
@@ -1,5 +1,6 @@
%{
"advent_of_code_utils": {:hex, :advent_of_code_utils, "4.0.0", "28df8cde0d6cccf95b72880ab89b00e1cb7c0492164bbf537bdf229c0953f7aa", [:mix], [{:floki, "~> 0.34", [hex: :floki, repo: "hexpm", optional: false]}, {:tz, "~> 0.26", [hex: :tz, repo: "hexpm", optional: false]}], "hexpm", "6f44c1f5b901e6a5bd7561361f3441ee7fa4ee67ea28d7fc3b2df29303d80ff4"},
"floki": {:hex, :floki, "0.35.2", "87f8c75ed8654b9635b311774308b2760b47e9a579dabf2e4d5f1e1d42c39e0b", [:mix], [], "hexpm", "6b05289a8e9eac475f644f09c2e4ba7e19201fd002b89c28c1293e7bd16773d9"},
+ "nimble_parsec": {:hex, :nimble_parsec, "1.4.0", "51f9b613ea62cfa97b25ccc2c1b4216e81df970acd8e16e8d1bdc58fef21370d", [:mix], [], "hexpm", "9c565862810fb383e9838c1dd2d7d2c437b3d13b267414ba6af33e50d2d1cf28"},
"tz": {:hex, :tz, "0.26.2", "a40e4bb223344c6fc7b74dda25df1f26b88a30db23fa6e55de843bd79148ccdb", [:mix], [{:castore, "~> 0.1 or ~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:mint, "~> 1.5", [hex: :mint, repo: "hexpm", optional: true]}], "hexpm", "224b0618dd1e032778a094040bc710ef9aff6e2fa8fffc2716299486f27b9e68"},
}
diff --git a/README.md b/README.md
index 4a4ab8b..45e8da4 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@
1. [2020] **17/50** 🌟
1. [2021] **43/50** 🌟
1. [2022] **14/50** 🌟
-1. [2023] **2/50** 🌟
+1. [2023] **3/50** 🌟
[2015]: ./2015
[2017]: ./2017