Days 1 and 2
parent
dd33211827
commit
6891308384
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@ -2,7 +2,3 @@
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/result
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/target
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# Added by cargo
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@ -2,6 +2,371 @@
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|
checksum = "1c38c045535d93ec4f0b4defec448e4291638ee608530863b1e2ba115d4fff7f"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi"
|
||||||
|
version = "0.3.9"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
|
||||||
|
dependencies = [
|
||||||
|
"winapi-i686-pc-windows-gnu",
|
||||||
|
"winapi-x86_64-pc-windows-gnu",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-i686-pc-windows-gnu"
|
||||||
|
version = "0.4.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-util"
|
||||||
|
version = "0.1.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
|
||||||
|
dependencies = [
|
||||||
|
"winapi",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-x86_64-pc-windows-gnu"
|
||||||
|
version = "0.4.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||||
|
|
|
||||||
|
|
@ -6,3 +6,6 @@ edition = "2021"
|
||||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||||
|
|
||||||
[dependencies]
|
[dependencies]
|
||||||
|
anyhow = "1.0.66"
|
||||||
|
chrono = "0.4.23"
|
||||||
|
pico-args = "0.5.0"
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,14 @@
|
||||||
|
1000
|
||||||
|
2000
|
||||||
|
3000
|
||||||
|
|
||||||
|
4000
|
||||||
|
|
||||||
|
5000
|
||||||
|
6000
|
||||||
|
|
||||||
|
7000
|
||||||
|
8000
|
||||||
|
9000
|
||||||
|
|
||||||
|
10000
|
||||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,3 @@
|
||||||
|
A Y
|
||||||
|
B X
|
||||||
|
C Z
|
||||||
File diff suppressed because it is too large
Load Diff
168
src/main.rs
168
src/main.rs
|
|
@ -1,3 +1,167 @@
|
||||||
fn main() {
|
use std::cmp::Ordering;
|
||||||
println!("Hello, world!");
|
use std::fs;
|
||||||
|
|
||||||
|
use anyhow::Error;
|
||||||
|
use chrono::{Datelike, Local};
|
||||||
|
use pico_args::Arguments;
|
||||||
|
|
||||||
|
const DAYS: usize = 2;
|
||||||
|
type Part = fn(String) -> u64;
|
||||||
|
type Day = [Part; 2];
|
||||||
|
const SOLNS: [Day; DAYS] = [[day_1_part_1, day_1_part_2], [day_2_part_1, day_2_part_2]];
|
||||||
|
|
||||||
|
fn main() -> Result<(), Error> {
|
||||||
|
let mut args = Arguments::from_env();
|
||||||
|
let small = args.contains("--small");
|
||||||
|
let part = args.opt_free_from_str()?.unwrap_or(1);
|
||||||
|
let day = args
|
||||||
|
.opt_free_from_str()?
|
||||||
|
.unwrap_or_else(|| Local::now().day());
|
||||||
|
let small = if small { ".small" } else { "" };
|
||||||
|
let path = format!("inputs/{day}{small}.txt");
|
||||||
|
let input = fs::read_to_string(path)?;
|
||||||
|
let result = SOLNS[day as usize - 1][part as usize - 1](input);
|
||||||
|
println!("{result}");
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
fn day_1_part_1(input: String) -> u64 {
|
||||||
|
let lines = input.lines();
|
||||||
|
let (max, _) = lines.fold((0, 0), |(max, sum), line| {
|
||||||
|
if line.is_empty() {
|
||||||
|
(max.max(sum), 0)
|
||||||
|
} else {
|
||||||
|
let cal = line.parse::<u64>().expect("Got bad line");
|
||||||
|
(max, sum + cal)
|
||||||
|
}
|
||||||
|
});
|
||||||
|
max
|
||||||
|
}
|
||||||
|
|
||||||
|
fn day_1_part_2(input: String) -> u64 {
|
||||||
|
let lines = input.lines();
|
||||||
|
let (a, b, c, _) = lines.fold((0, 0, 0, 0), |(a, b, c, sum), line| {
|
||||||
|
if line.trim().is_empty() {
|
||||||
|
if sum > a {
|
||||||
|
(sum, a, b, 0)
|
||||||
|
} else if sum > b {
|
||||||
|
(a, sum, b, 0)
|
||||||
|
} else if sum > c {
|
||||||
|
(a, b, sum, 0)
|
||||||
|
} else {
|
||||||
|
(a, b, c, 0)
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
let cal = line.trim().parse::<u64>().expect("Got bad line");
|
||||||
|
(a, b, c, sum + cal)
|
||||||
|
}
|
||||||
|
});
|
||||||
|
a + b + c
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Copy, Clone, PartialEq, Eq)]
|
||||||
|
enum RPS {
|
||||||
|
Rock,
|
||||||
|
Paper,
|
||||||
|
Scissors,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl RPS {
|
||||||
|
fn from_str(s: &str) -> Self {
|
||||||
|
match s {
|
||||||
|
"A" | "X" => RPS::Rock,
|
||||||
|
"B" | "Y" => RPS::Paper,
|
||||||
|
"C" | "Z" => RPS::Scissors,
|
||||||
|
_ => unreachable!("you did a bad thing"),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn win(self) -> RPS {
|
||||||
|
match self {
|
||||||
|
RPS::Rock => RPS::Scissors,
|
||||||
|
RPS::Paper => RPS::Rock,
|
||||||
|
RPS::Scissors => RPS::Paper,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn lose(self) -> RPS {
|
||||||
|
match self {
|
||||||
|
RPS::Rock => RPS::Paper,
|
||||||
|
RPS::Paper => RPS::Scissors,
|
||||||
|
RPS::Scissors => RPS::Rock,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn cmp(self, other: Self) -> Ordering {
|
||||||
|
if self == other {
|
||||||
|
Ordering::Equal
|
||||||
|
} else if self.win() == other {
|
||||||
|
Ordering::Greater
|
||||||
|
} else {
|
||||||
|
Ordering::Less
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn score(you: Self, me: Self) -> u64 {
|
||||||
|
let base = match me {
|
||||||
|
RPS::Rock => 1,
|
||||||
|
RPS::Paper => 2,
|
||||||
|
RPS::Scissors => 3,
|
||||||
|
};
|
||||||
|
let win = match RPS::cmp(me, you) {
|
||||||
|
Ordering::Less => 0,
|
||||||
|
Ordering::Equal => 3,
|
||||||
|
Ordering::Greater => 6,
|
||||||
|
};
|
||||||
|
base + win
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn day_2_part_1(input: String) -> u64 {
|
||||||
|
input
|
||||||
|
.lines()
|
||||||
|
.map(|line| {
|
||||||
|
let (you, me) = line.split_once(' ').expect("oof");
|
||||||
|
let (you, me) = (RPS::from_str(you), RPS::from_str(me));
|
||||||
|
RPS::score(you, me)
|
||||||
|
})
|
||||||
|
.sum()
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Copy, Clone)]
|
||||||
|
enum Outcome {
|
||||||
|
Win,
|
||||||
|
Draw,
|
||||||
|
Lose,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Outcome {
|
||||||
|
fn from_str(s: &str) -> Self {
|
||||||
|
match s {
|
||||||
|
"X" => Outcome::Lose,
|
||||||
|
"Y" => Outcome::Draw,
|
||||||
|
"Z" => Outcome::Win,
|
||||||
|
_ => unreachable!("yikes"),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn requires(self, you: RPS) -> RPS {
|
||||||
|
match self {
|
||||||
|
Outcome::Win => you.lose(),
|
||||||
|
Outcome::Draw => you,
|
||||||
|
Outcome::Lose => you.win(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn day_2_part_2(input: String) -> u64 {
|
||||||
|
input
|
||||||
|
.lines()
|
||||||
|
.map(|line| {
|
||||||
|
let (you, out) = line.split_once(' ').expect("oof");
|
||||||
|
let (you, out) = (RPS::from_str(you), Outcome::from_str(out));
|
||||||
|
let me = out.requires(you);
|
||||||
|
RPS::score(you, me)
|
||||||
|
})
|
||||||
|
.sum()
|
||||||
}
|
}
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue