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day02

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This commit is contained in:
Gabe Venberg 2023-12-02 15:46:38 -06:00
parent 65179c9f23
commit 5bd1d16259
7 changed files with 675 additions and 0 deletions
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24
Cargo.lock generated
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@ -24,12 +24,36 @@ dependencies = [
"regex", "regex",
] ]
[[package]]
name = "day02"
version = "0.1.0"
dependencies = [
"aoc_libs",
"nom",
]
[[package]] [[package]]
name = "memchr" name = "memchr"
version = "2.6.4" version = "2.6.4"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167" checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167"
[[package]]
name = "minimal-lexical"
version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
[[package]]
name = "nom"
version = "7.1.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d273983c5a657a70a3e8f2a01329822f3b8c8172b73826411a55751e404a0a4a"
dependencies = [
"memchr",
"minimal-lexical",
]
[[package]] [[package]]
name = "once_cell" name = "once_cell"
version = "1.18.0" version = "1.18.0"

10
days/day02/Cargo.toml Normal file
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[package]
name = "day02"
authors.workspace = true
description.workspace = true
version.workspace = true
edition.workspace = true
[dependencies]
aoc_libs.workspace = true
nom.workspace = true

100
days/day02/src/input.txt Normal file
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Game 1: 3 blue, 7 green, 10 red; 4 green, 4 red; 1 green, 7 blue, 5 red; 8 blue, 10 red; 7 blue, 19 red, 1 green
Game 2: 6 red, 10 green; 11 green, 4 red; 16 green, 2 blue; 7 green, 5 blue, 4 red; 17 green, 1 red, 1 blue
Game 3: 5 red, 9 blue, 1 green; 5 red; 11 red, 2 green, 8 blue; 2 green, 6 blue
Game 4: 2 red, 5 green; 2 blue, 3 red, 3 green; 3 red, 2 blue; 8 green, 2 red
Game 5: 12 red, 13 blue; 13 blue, 2 green, 9 red; 9 blue, 1 red; 2 green, 12 blue; 1 green, 1 red, 11 blue
Game 6: 4 blue, 11 red; 4 red; 1 green, 7 red; 1 green, 1 blue; 8 blue, 10 red; 1 green, 2 blue, 8 red
Game 7: 7 blue, 15 red, 1 green; 5 green, 17 red, 7 blue; 5 blue, 1 green; 11 blue, 2 green, 17 red; 14 green, 9 red, 2 blue; 6 blue, 19 red
Game 8: 13 green; 5 green; 3 blue, 9 green, 1 red; 4 red, 11 green, 4 blue
Game 9: 4 green, 1 red, 1 blue; 4 green, 7 blue, 7 red; 9 blue, 4 red; 2 blue, 8 red, 5 green; 6 blue, 2 green; 5 red, 5 green, 10 blue
Game 10: 1 green, 5 blue, 3 red; 4 green, 9 red, 3 blue; 11 red, 2 green, 5 blue; 3 green, 1 blue, 2 red; 6 red, 2 blue
Game 11: 2 red, 6 green, 12 blue; 2 red, 9 blue, 1 green; 12 green, 3 blue
Game 12: 1 red, 1 blue, 12 green; 6 green, 2 red, 1 blue; 6 red, 6 green, 1 blue; 3 green, 6 red
Game 13: 5 red, 19 green, 3 blue; 6 red, 7 blue, 11 green; 8 blue, 6 red; 3 blue, 4 green, 4 red; 8 red, 15 green, 5 blue; 5 blue, 2 red, 10 green
Game 14: 5 blue, 9 green; 4 green, 6 blue; 14 green, 1 red, 4 blue; 3 blue, 3 green; 2 green; 5 blue, 7 green, 1 red
Game 15: 5 red, 8 blue; 9 blue, 3 red; 5 red, 1 green, 16 blue; 1 blue, 3 red, 2 green; 5 red, 2 green, 10 blue
Game 16: 6 blue, 9 green, 10 red; 8 blue, 9 red, 14 green; 7 green, 1 blue, 1 red; 8 red, 5 green, 8 blue; 10 red, 5 blue, 14 green; 7 blue, 11 red, 3 green
Game 17: 12 blue, 12 red, 6 green; 14 green, 17 blue, 4 red; 11 blue, 1 red, 13 green
Game 18: 7 blue, 2 green, 4 red; 1 blue, 2 green, 4 red; 2 red, 17 blue
Game 19: 3 red, 9 green; 8 red, 2 blue, 2 green; 3 blue, 15 green, 11 red; 18 green, 3 red, 1 blue
Game 20: 5 green, 5 red, 16 blue; 8 blue, 6 green, 4 red; 10 red, 11 blue; 5 red, 5 blue, 5 green
Game 21: 1 red, 3 blue, 14 green; 6 red, 6 blue, 17 green; 12 green, 17 blue, 3 red; 15 green, 1 red, 19 blue; 3 red, 18 blue, 4 green
Game 22: 15 blue; 11 blue, 2 red, 1 green; 1 green, 7 red; 1 red, 18 blue, 1 green; 16 blue; 3 red, 6 blue
Game 23: 11 blue, 6 green, 4 red; 9 green, 11 red, 8 blue; 5 green, 5 red, 2 blue; 11 green, 4 blue, 11 red; 3 green, 9 blue, 2 red
Game 24: 7 green, 2 red; 8 red, 1 blue, 15 green; 3 red, 6 green, 6 blue
Game 25: 9 blue, 9 green; 3 green, 7 blue, 1 red; 6 green, 1 red, 1 blue; 6 green, 1 red, 1 blue
Game 26: 1 green, 15 blue, 1 red; 1 red, 12 blue, 1 green; 16 blue; 5 red, 11 green, 14 blue; 6 green, 4 red, 14 blue
Game 27: 14 red, 9 green; 11 red, 5 green, 6 blue; 1 red, 6 blue, 9 green
Game 28: 6 green, 1 blue, 9 red; 1 green, 9 red; 7 red; 11 red, 1 blue, 2 green; 8 red, 10 green; 6 green, 1 blue, 5 red
Game 29: 1 red, 19 blue, 3 green; 9 blue, 1 red; 8 green, 17 blue; 11 blue, 4 green
Game 30: 7 blue; 5 blue, 1 red, 1 green; 3 blue, 1 red
Game 31: 9 red, 2 green, 1 blue; 5 red, 1 green, 3 blue; 2 green, 7 red; 2 green, 12 red
Game 32: 1 red, 1 blue, 17 green; 14 blue, 10 green, 6 red; 12 green, 11 blue, 3 red
Game 33: 2 red, 1 green, 3 blue; 7 blue, 4 green; 1 red, 3 green, 5 blue
Game 34: 9 blue, 1 green, 9 red; 12 blue, 2 green, 12 red; 3 blue, 12 red; 2 green, 14 blue, 11 red; 10 red, 12 blue
Game 35: 6 blue, 2 red; 5 blue; 6 green, 9 blue, 3 red; 3 green, 1 red, 2 blue
Game 36: 9 blue, 4 green, 6 red; 2 red, 4 green; 7 red, 3 green; 6 green, 2 blue; 3 red, 4 blue, 3 green; 3 green, 4 red, 16 blue
Game 37: 2 green, 8 red, 4 blue; 3 red, 4 blue, 2 green; 5 blue, 3 green; 9 blue, 15 green; 5 red, 11 green, 7 blue
Game 38: 12 red, 1 blue; 10 red, 3 green, 2 blue; 7 blue, 3 green, 8 red; 14 red, 2 green
Game 39: 16 green, 2 red, 17 blue; 6 red, 4 green, 13 blue; 7 blue, 1 green, 4 red; 2 green, 3 blue; 12 green, 6 red, 17 blue; 5 red, 2 blue, 6 green
Game 40: 3 green, 4 blue, 2 red; 2 green, 3 red; 6 blue, 2 red, 6 green; 5 green; 3 blue, 1 red, 5 green
Game 41: 13 green, 11 red; 3 green, 2 red, 1 blue; 1 blue, 3 green, 9 red; 12 red, 11 green; 9 red, 1 green; 9 green, 4 red
Game 42: 4 green, 2 blue; 6 blue, 10 green; 13 blue, 3 red, 6 green; 11 blue, 17 green; 8 blue, 5 red
Game 43: 10 green, 2 blue, 10 red; 3 red, 3 blue, 5 green; 10 green, 11 red, 4 blue; 5 green; 7 green, 13 red, 2 blue
Game 44: 4 red, 1 blue, 5 green; 1 blue, 8 red, 3 green; 11 red, 1 green, 1 blue; 2 green, 12 red, 1 blue; 1 blue, 12 red; 14 red, 3 green
Game 45: 4 green, 5 red, 7 blue; 10 red, 8 green, 3 blue; 12 blue, 1 green, 13 red; 1 red, 3 blue, 7 green
Game 46: 5 blue, 13 red; 15 red, 3 green, 17 blue; 8 red, 2 green, 1 blue; 1 green, 7 red, 16 blue; 4 blue, 10 red
Game 47: 2 red, 3 green; 2 blue, 9 red, 15 green; 7 green, 4 red; 3 blue, 13 red, 9 green
Game 48: 11 green, 4 red, 9 blue; 1 blue, 7 green; 4 blue, 4 red; 4 red, 4 blue, 2 green; 9 green, 2 blue, 2 red
Game 49: 10 green, 6 blue; 2 blue, 5 green, 1 red; 5 green, 4 blue; 11 green, 3 red, 3 blue
Game 50: 2 red, 15 green, 1 blue; 8 green, 7 blue; 4 blue, 8 green; 7 blue, 17 green; 5 blue, 6 green, 2 red; 16 green, 2 red, 1 blue
Game 51: 3 green, 5 blue, 1 red; 11 red, 9 blue, 8 green; 3 red, 8 green, 7 blue; 1 red, 9 blue, 6 green; 4 green, 1 red, 3 blue; 8 green, 7 red
Game 52: 1 green, 2 blue, 10 red; 8 green, 1 blue, 2 red; 7 red, 8 green
Game 53: 2 red, 6 green; 1 green, 4 blue; 12 green, 19 blue; 11 blue, 1 green; 4 green, 20 blue; 7 blue, 9 green, 1 red
Game 54: 2 blue, 2 green, 2 red; 13 red, 1 green, 6 blue; 9 blue, 1 green, 18 red; 11 red, 16 blue; 15 red, 3 green, 13 blue
Game 55: 5 green, 5 blue, 9 red; 8 red, 11 blue, 7 green; 6 green, 2 red, 10 blue; 6 red, 6 blue, 9 green; 11 green, 14 blue, 4 red
Game 56: 8 blue, 14 green; 3 red, 8 green, 3 blue; 14 green, 1 red, 13 blue; 8 green, 3 red; 8 blue, 11 green, 1 red; 8 blue, 10 green, 2 red
Game 57: 7 blue, 7 red; 11 green, 5 blue, 2 red; 14 green, 8 blue; 5 blue, 2 red, 17 green; 12 green, 3 red; 7 red, 7 blue, 9 green
Game 58: 3 blue, 4 red, 1 green; 2 green, 3 red; 1 red, 2 green, 4 blue; 4 green, 4 red, 2 blue
Game 59: 6 red, 4 blue, 5 green; 6 blue, 6 red; 1 red; 8 blue, 1 red
Game 60: 4 blue, 9 green, 11 red; 12 green, 3 red, 9 blue; 7 green, 1 blue; 14 green, 11 blue, 11 red
Game 61: 12 green; 9 green, 9 red; 12 red, 18 blue, 8 green; 16 red, 10 blue, 3 green; 6 green, 15 red, 3 blue; 13 green
Game 62: 2 green, 3 red, 12 blue; 12 blue, 12 green, 12 red; 1 red, 12 blue, 5 green; 7 red, 9 blue, 13 green; 1 blue, 3 red, 10 green; 2 blue, 8 red, 17 green
Game 63: 10 green, 7 blue, 4 red; 3 blue, 6 green, 2 red; 4 green, 10 red, 6 blue; 16 blue, 5 red, 4 green
Game 64: 11 red, 1 green, 6 blue; 12 red, 3 green; 6 green, 5 blue, 2 red; 4 green, 9 blue, 11 red; 5 blue, 8 green, 8 red; 9 green, 11 blue
Game 65: 4 blue, 12 red; 1 green, 3 blue, 12 red; 1 green, 3 blue, 13 red; 2 red; 12 red
Game 66: 4 red, 3 green, 3 blue; 2 blue, 4 red; 10 red, 6 blue, 3 green
Game 67: 7 red, 2 blue, 5 green; 3 green, 5 red, 18 blue; 16 red, 5 green, 13 blue; 16 red, 5 blue, 2 green
Game 68: 11 blue, 2 red; 1 green, 3 blue, 8 red; 16 red, 1 green, 17 blue; 4 red, 1 green, 11 blue; 3 red
Game 69: 1 green, 9 red, 12 blue; 12 red; 11 blue; 1 green
Game 70: 1 green, 18 blue, 16 red; 3 green, 15 red, 7 blue; 3 blue, 3 green, 10 red; 1 blue, 3 green, 10 red
Game 71: 3 red, 12 blue, 8 green; 18 green, 12 blue, 5 red; 2 blue, 7 red; 11 blue, 9 green; 5 blue, 7 red, 19 green; 2 red, 1 blue, 13 green
Game 72: 8 red, 6 blue, 3 green; 2 green, 13 blue, 15 red; 5 green, 8 blue, 2 red; 5 red, 12 blue, 3 green
Game 73: 3 blue, 13 green; 7 red, 3 green; 10 red, 2 blue, 1 green
Game 74: 3 red; 2 red, 1 blue, 7 green; 10 green, 3 blue, 1 red; 6 green, 1 blue; 11 green, 4 blue
Game 75: 8 blue, 2 green, 4 red; 19 blue, 2 green; 1 red, 18 blue, 3 green; 3 red, 5 green, 18 blue
Game 76: 3 green, 2 red, 2 blue; 3 blue, 6 green, 1 red; 1 green, 3 blue; 1 blue, 1 green
Game 77: 4 green, 7 red, 13 blue; 18 blue; 4 blue, 9 red, 1 green; 2 green, 16 blue, 9 red
Game 78: 2 green, 5 blue, 11 red; 2 blue, 3 red, 1 green; 4 green, 6 blue, 6 red
Game 79: 9 blue, 1 green, 3 red; 1 green, 2 red, 4 blue; 5 red, 4 green, 10 blue; 1 red, 9 blue, 4 green
Game 80: 8 red, 5 green, 7 blue; 15 red, 6 blue, 8 green; 8 blue, 14 red, 7 green; 3 blue, 2 green, 20 red; 10 red, 8 blue, 1 green; 7 green, 11 red, 9 blue
Game 81: 7 red, 1 blue, 5 green; 5 green, 10 blue, 9 red; 8 blue, 2 green, 7 red
Game 82: 1 green, 6 blue, 14 red; 7 blue, 2 green; 7 blue, 17 red, 3 green
Game 83: 2 red, 19 blue, 2 green; 5 red, 5 blue, 2 green; 2 red, 4 blue, 1 green
Game 84: 1 blue, 1 red, 12 green; 11 blue, 6 red, 13 green; 10 red, 8 blue, 8 green; 14 blue, 15 red; 19 blue, 10 green, 17 red; 11 red, 7 green
Game 85: 16 blue, 12 red, 8 green; 13 red, 3 green; 1 red, 16 blue, 10 green
Game 86: 5 green, 8 blue, 3 red; 8 green, 9 red, 13 blue; 4 green, 1 red, 12 blue; 13 red, 15 blue, 5 green
Game 87: 1 green, 16 red; 10 red, 2 green, 2 blue; 16 red, 5 blue; 1 blue, 2 green
Game 88: 3 blue, 1 green; 1 red, 2 green, 13 blue; 5 blue, 2 green, 1 red
Game 89: 9 blue, 2 red, 1 green; 10 blue; 5 blue, 1 green
Game 90: 8 red, 2 blue, 5 green; 2 red, 2 green, 2 blue; 1 blue, 8 green, 10 red; 11 green, 1 blue; 10 green, 4 red, 3 blue
Game 91: 14 blue, 9 red; 5 green, 5 red, 11 blue; 7 green, 4 blue, 12 red; 8 red, 6 green, 10 blue
Game 92: 2 green, 2 blue, 12 red; 2 green, 1 blue, 14 red; 14 red, 2 blue, 6 green; 11 red, 6 green, 2 blue; 11 green, 12 red, 2 blue
Game 93: 4 green, 7 blue, 3 red; 1 green, 12 blue, 1 red; 8 blue, 7 green, 2 red; 3 red, 9 blue, 2 green
Game 94: 13 green, 9 blue; 9 blue, 1 red, 8 green; 12 green, 1 red, 8 blue; 1 red, 9 green; 1 red, 5 blue, 14 green
Game 95: 7 blue, 14 red; 9 blue, 17 red; 2 blue, 1 green, 4 red
Game 96: 11 blue, 2 green, 3 red; 3 blue, 12 red, 3 green; 4 green, 11 red, 1 blue
Game 97: 9 red, 5 green, 2 blue; 12 red, 1 blue, 11 green; 7 green, 4 red, 2 blue; 1 blue, 6 red, 10 green
Game 98: 5 green, 5 red, 11 blue; 1 red, 10 blue, 7 green; 8 red, 1 blue, 7 green; 8 green, 11 red, 2 blue; 4 red, 5 blue, 2 green; 10 green, 5 red, 9 blue
Game 99: 3 green, 7 red, 4 blue; 9 red, 13 blue, 2 green; 3 red, 2 green, 11 blue; 5 red, 6 blue, 3 green; 8 blue, 5 green, 6 red; 6 green, 13 red, 1 blue
Game 100: 9 green, 7 blue; 1 green, 3 red, 4 blue; 15 red, 9 green; 3 blue, 6 red, 13 green; 2 red, 11 blue, 12 green

14
days/day02/src/main.rs Normal file
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mod part1;
mod part2;
mod parse;
fn main() {
let input = include_str!("./input.txt");
let structured_input = parse::parse(input);
println!("Part One");
println!("Result: {}", part1::part1(&structured_input));
println!("Part Two");
println!("Result: {}", part2::part2(&structured_input));
}

294
days/day02/src/parse.rs Normal file
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use nom::{
branch::alt,
bytes::complete::tag,
character::{self},
combinator::map,
multi::separated_list1,
sequence::{preceded, terminated},
IResult,
};
#[derive(Debug, PartialEq, Eq)]
pub struct Handful {
pub red: u8,
pub green: u8,
pub blue: u8,
}
impl Handful {
pub fn is_possible_given_contents(&self, contents: &Handful) -> bool {
contents.red >= self.red && contents.green >= self.green && contents.blue >= self.blue
}
pub fn power(&self) -> usize {
self.red as usize * self.green as usize * self.blue as usize
}
}
#[derive(Debug, PartialEq, Eq)]
pub struct Game {
pub id: u8,
pub handfuls: Vec<Handful>,
}
impl Game {
fn parse(input: &str) -> IResult<&str, Self> {
let (input, id) = Self::parse_game_id(input)?;
let (input, handfuls) = separated_list1(tag("; "), Self::parse_handful)(input)?;
Ok((input, Game { id, handfuls }))
}
fn parse_game_id(input: &str) -> IResult<&str, u8> {
terminated(
preceded(tag("Game "), nom::character::complete::u8),
tag(": "),
)(input)
}
fn parse_colour_set(input: &str) -> IResult<&str, Colour> {
let red = terminated(character::complete::u8, tag(" red"));
let green = terminated(character::complete::u8, tag(" green"));
let blue = terminated(character::complete::u8, tag(" blue"));
alt((
map(red, Colour::Red),
map(green, Colour::Green),
map(blue, Colour::Blue),
))(input)
}
fn parse_handful(input: &str) -> IResult<&str, Handful> {
let (input, colours) = separated_list1(tag(", "), Self::parse_colour_set)(input)?;
let mut red = 0;
let mut green = 0;
let mut blue = 0;
for colour in colours {
match colour {
Colour::Red(n) => red = n,
Colour::Green(n) => green = n,
Colour::Blue(n) => blue = n,
}
}
Ok((input, Handful { red, green, blue }))
}
pub fn is_possible_given_contents(&self, contents: &Handful) -> bool {
self.handfuls
.iter()
.all(|h| h.is_possible_given_contents(contents))
}
pub fn min_contents(&self) -> Handful {
Handful {
red: self.handfuls.iter().map(|g| g.red).max().unwrap_or(0),
green: self.handfuls.iter().map(|g| g.green).max().unwrap_or(0),
blue: self.handfuls.iter().map(|g| g.blue).max().unwrap_or(0),
}
}
}
#[derive(Debug, PartialEq, Eq)]
enum Colour {
Red(u8),
Green(u8),
Blue(u8),
}
pub fn parse(input: &str) -> Vec<Game> {
input.lines().map(|l| Game::parse(l).unwrap().1).collect()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_parse() {
let input = concat!(
"Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green\n",
"Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue\n",
"Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red\n",
"Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red\n",
"Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green\n",
);
assert_eq!(
parse(input),
vec![
Game {
id: 1,
handfuls: vec![
Handful {
red: 4,
green: 0,
blue: 3
},
Handful {
red: 1,
green: 2,
blue: 6
},
Handful {
red: 0,
green: 2,
blue: 0
}
]
},
Game {
id: 2,
handfuls: vec![
Handful {
red: 0,
green: 2,
blue: 1
},
Handful {
red: 1,
green: 3,
blue: 4
},
Handful {
red: 0,
green: 1,
blue: 1
}
]
},
Game {
id: 3,
handfuls: vec![
Handful {
red: 20,
green: 8,
blue: 6
},
Handful {
red: 4,
green: 13,
blue: 5
},
Handful {
red: 1,
green: 5,
blue: 0
}
]
},
Game {
id: 4,
handfuls: vec![
Handful {
red: 3,
green: 1,
blue: 6
},
Handful {
red: 6,
green: 3,
blue: 0
},
Handful {
red: 14,
green: 3,
blue: 15
}
]
},
Game {
id: 5,
handfuls: vec![
Handful {
red: 6,
green: 3,
blue: 1
},
Handful {
red: 1,
green: 2,
blue: 2
}
]
}
]
);
}
#[test]
fn test_game_parsing() {
let input = "Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green";
assert_eq!(
Game::parse(input).unwrap(),
(
"",
Game {
id: 1,
handfuls: vec![
Handful {
blue: 3,
red: 4,
green: 0
},
Handful {
red: 1,
green: 2,
blue: 6
},
Handful {
green: 2,
blue: 0,
red: 0
},
]
}
)
)
}
#[test]
fn test_parse_handful() {
assert_eq!(
Game::parse_handful("10 blue, 53 red, 3 green").unwrap(),
(
"",
Handful {
red: 53,
green: 3,
blue: 10
}
)
);
assert_eq!(
Game::parse_handful("15 green, 53 red").unwrap(),
(
"",
Handful {
red: 53,
green: 15,
blue: 0
}
)
);
}
#[test]
fn test_parse_colour_set() {
assert_eq!(
Game::parse_colour_set("5 red").unwrap(),
("", Colour::Red(5))
);
assert_eq!(
Game::parse_colour_set("10 blue").unwrap(),
("", Colour::Blue(10))
);
assert_eq!(
Game::parse_colour_set("123 green").unwrap(),
("", Colour::Green(123))
);
}
#[test]
fn test_parse_game_id() {
assert_eq!(Game::parse_game_id("Game 2: ").unwrap(), ("", 2));
assert_eq!(Game::parse_game_id("Game 100: ").unwrap(), ("", 100));
assert_eq!(Game::parse_game_id("Game 15: ").unwrap(), ("", 15));
}
}

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days/day02/src/part1.rs Normal file
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use crate::parse::*;
pub fn part1(input: &[Game]) -> usize {
let contents = Handful {
red: 12,
green: 13,
blue: 14,
};
input
.iter()
.filter(|g| g.is_possible_given_contents(&contents))
.map(|g| g.id as usize)
.sum()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_part1() {
let input = vec![
Game {
id: 1,
handfuls: vec![
Handful {
red: 4,
green: 0,
blue: 3,
},
Handful {
red: 1,
green: 2,
blue: 6,
},
Handful {
red: 0,
green: 2,
blue: 0,
},
],
},
Game {
id: 2,
handfuls: vec![
Handful {
red: 0,
green: 2,
blue: 1,
},
Handful {
red: 1,
green: 3,
blue: 4,
},
Handful {
red: 0,
green: 1,
blue: 1,
},
],
},
Game {
id: 3,
handfuls: vec![
Handful {
red: 20,
green: 8,
blue: 6,
},
Handful {
red: 4,
green: 13,
blue: 5,
},
Handful {
red: 1,
green: 5,
blue: 0,
},
],
},
Game {
id: 4,
handfuls: vec![
Handful {
red: 3,
green: 1,
blue: 6,
},
Handful {
red: 6,
green: 3,
blue: 0,
},
Handful {
red: 14,
green: 3,
blue: 15,
},
],
},
Game {
id: 5,
handfuls: vec![
Handful {
red: 6,
green: 3,
blue: 1,
},
Handful {
red: 1,
green: 2,
blue: 2,
},
],
},
];
assert_eq!(part1(&input), 8);
}
}

112
days/day02/src/part2.rs Normal file
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use crate::parse::*;
pub fn part2(input: &[Game]) -> usize {
input.iter().map(|g| g.min_contents().power()).sum()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_part2() {
let input = vec![
Game {
id: 1,
handfuls: vec![
Handful {
red: 4,
green: 0,
blue: 3,
},
Handful {
red: 1,
green: 2,
blue: 6,
},
Handful {
red: 0,
green: 2,
blue: 0,
},
],
},
Game {
id: 2,
handfuls: vec![
Handful {
red: 0,
green: 2,
blue: 1,
},
Handful {
red: 1,
green: 3,
blue: 4,
},
Handful {
red: 0,
green: 1,
blue: 1,
},
],
},
Game {
id: 3,
handfuls: vec![
Handful {
red: 20,
green: 8,
blue: 6,
},
Handful {
red: 4,
green: 13,
blue: 5,
},
Handful {
red: 1,
green: 5,
blue: 0,
},
],
},
Game {
id: 4,
handfuls: vec![
Handful {
red: 3,
green: 1,
blue: 6,
},
Handful {
red: 6,
green: 3,
blue: 0,
},
Handful {
red: 14,
green: 3,
blue: 15,
},
],
},
Game {
id: 5,
handfuls: vec![
Handful {
red: 6,
green: 3,
blue: 1,
},
Handful {
red: 1,
green: 2,
blue: 2,
},
],
},
];
assert_eq!(part2(&input), 2286);
}
}