# Day 2
```elixir
Mix.install([
{:kino_aoc, git: "https://github.com/ljgago/kino_aoc"}
])
```
## Helper
<!-- livebook:{"attrs":{"day":"2","session_secret":"AOC_SESSION","variable":"puzzle_input","year":"2022"},"kind":"Elixir.KinoAOC.HelperCell","livebook_object":"smart_cell"} -->
```elixir
{:ok, puzzle_input} = KinoAOC.download_puzzle("2022", "2", System.fetch_env!("LB_AOC_SESSION"))
```
A -> Rock
B -> Paper
C -> Scissor
---
X -> Rock
Y -> Paper
Z -> Scissor
---
### Score
1 -> Rock
2 -> Paper
3 -> Scissor
Plus 0(lost) | 3(draw) | 6(win)
```elixir
puzzle_input =
puzzle_input
|> String.split("\n", trim: true)
|> Enum.map(&String.split/1)
```
## Part 1
```elixir
defmodule GameLogic do
def score(enemy_move, player_move) do
case move_decision(enemy_move, player_move) do
{:win, point} -> point + 6
{:loss, point} -> point + 0
{:draw, point} -> point + 3
end
end
def move_decision("A", player_move) do
case player_move do
"X" -> {:draw, 1}
"Y" -> {:win, 2}
"Z" -> {:loss, 3}
end
end
def move_decision("B", player_move) do
case player_move do
"X" -> {:loss, 1}
"Y" -> {:draw, 2}
"Z" -> {:win, 3}
end
end
def move_decision("C", player_move) do
case player_move do
"X" -> {:win, 1}
"Y" -> {:loss, 2}
"Z" -> {:draw, 3}
end
end
end
```
```elixir
Enum.reduce(puzzle_input, 0, fn [enemy_move, player_move], total_score ->
total_score + GameLogic.score(enemy_move, player_move)
end)
```
## Part 2
```elixir
defmodule GameLogicPart2 do
def score(enemy_move, player_move) do
case move_decision(enemy_move, player_move) do
{:win, point} -> point + 6
{:loss, point} -> point + 0
{:draw, point} -> point + 3
end
end
# Rock
def move_decision("A", player_move) do
case player_move do
"X" -> {:loss, 3}
"Y" -> {:draw, 1}
"Z" -> {:win, 2}
end
end
# Paper
def move_decision("B", player_move) do
case player_move do
"X" -> {:loss, 1}
"Y" -> {:draw, 2}
"Z" -> {:win, 3}
end
end
# Scissor
def move_decision("C", player_move) do
case player_move do
"X" -> {:loss, 2}
"Y" -> {:draw, 3}
"Z" -> {:win, 1}
end
end
end
```
```elixir
Enum.reduce(puzzle_input, 0, fn [enemy_move, player_move], total_score ->
total_score + GameLogicPart2.score(enemy_move, player_move)
end)
```
