Complete day 3
parent
1eed1d2f85
commit
0c61772aa0
GPG Key ID:
49670FD774E43268
|
|
@ -0,0 +1 @@
|
|||
/target
|
||||
|
|
@ -0,0 +1,78 @@
|
|||
# This file is automatically @generated by Cargo.
|
||||
# It is not intended for manual editing.
|
||||
[[package]]
|
||||
name = "day-3"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"indoc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "indoc"
|
||||
version = "0.3.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "47741a8bc60fb26eb8d6e0238bbb26d8575ff623fdc97b1a2c00c050b9684ed8"
|
||||
dependencies = [
|
||||
"indoc-impl",
|
||||
"proc-macro-hack",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "indoc-impl"
|
||||
version = "0.3.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ce046d161f000fffde5f432a0d034d0341dc152643b2598ed5bfce44c4f3a8f0"
|
||||
dependencies = [
|
||||
"proc-macro-hack",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"unindent",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "proc-macro-hack"
|
||||
version = "0.5.19"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
|
||||
|
||||
[[package]]
|
||||
name = "proc-macro2"
|
||||
version = "1.0.24"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1e0704ee1a7e00d7bb417d0770ea303c1bccbabf0ef1667dae92b5967f5f8a71"
|
||||
dependencies = [
|
||||
"unicode-xid",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "quote"
|
||||
version = "1.0.7"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
version = "1.0.53"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8833e20724c24de12bbaba5ad230ea61c3eafb05b881c7c9d3cfe8638b187e68"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"unicode-xid",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unicode-xid"
|
||||
version = "0.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
|
||||
|
||||
[[package]]
|
||||
name = "unindent"
|
||||
version = "0.1.7"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f14ee04d9415b52b3aeab06258a3f07093182b88ba0f9b8d203f211a7a7d41c7"
|
||||
|
|
@ -0,0 +1,10 @@
|
|||
[package]
|
||||
name = "day-3"
|
||||
version = "0.1.0"
|
||||
authors = ["Tristan Daniël Maat <tm@tlater.net>"]
|
||||
edition = "2018"
|
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
|
||||
[dependencies]
|
||||
indoc = "0.3"
|
||||
|
|
@ -0,0 +1,323 @@
|
|||
...#...#..#....#..#...#..##..#.
|
||||
.#..#.....#.#............###...
|
||||
.#...###....#.............##..#
|
||||
...##...##....#.....##..#.##...
|
||||
.....###.#.###..##.#.##.......#
|
||||
#...##.....#..........#..#.#.#.
|
||||
......##.......##..#....#.#....
|
||||
....#.###.##..#.#..##.##....#.#
|
||||
.......#.......###.#.#.##.....#
|
||||
.........#.#....#..........#.#.
|
||||
.#...##.....##.........#..#....
|
||||
.##....#.#.#...##......#.......
|
||||
##.#.#..#....#....#....#...#.#.
|
||||
##....#.#..##......#....##...#.
|
||||
....#..#..##..#.###.......#.#..
|
||||
.....##....###...........#.#.##
|
||||
#.....##.........#....##......#
|
||||
........###.#..#....#....#.....
|
||||
...#.......#.##..#.###......#..
|
||||
...............#..#....#.##....
|
||||
..#..###..#.#..#.........##..#.
|
||||
####..#..####..................
|
||||
#...####...#.......#.#.#...#...
|
||||
......###.....#......#..#..#...
|
||||
#...#.....##.....#.#..##...#.#.
|
||||
#...........##.......#.........
|
||||
.#..#.........#.#..##....#.....
|
||||
........##...#................#
|
||||
........#.###.#.###.#.#.##..##.
|
||||
.#....##.....#...##.#..#.#.....
|
||||
..#..#.....###....##.#....#.#.#
|
||||
#......##.##...##..#.........#.
|
||||
#..#..#.....#.....#.........#..
|
||||
#....#.#...###.........#...#...
|
||||
.#.#.....##......#.#......#....
|
||||
..##......##...#.#.#.#.........
|
||||
..#......#.....##.###.#.#..#...
|
||||
....#..#.......#..#..#.....#...
|
||||
.#.#.....#...#..........#......
|
||||
#.#..#...........#.#.##.#...#.#
|
||||
..#.#....###...#...#.....#.#...
|
||||
....##.#.###....####.......#...
|
||||
.....##....#.......#..#..#....#
|
||||
...##..#.#.#.#......#......#...
|
||||
...##...#....#...#......###...#
|
||||
........#..#.#.....#.###.......
|
||||
..#..##.#....#.#.........#...#.
|
||||
.....#.####....#.##.........#..
|
||||
......#...#...#.....#......###.
|
||||
.##.....#....#..#.#....#.....#.
|
||||
...........#...#....##..#...#..
|
||||
.....#....#.....#...##..#...#.#
|
||||
.#...#.........#.......#...#..#
|
||||
...#..#...#........#......#....
|
||||
..#..#####.#.....#.#....#...#.#
|
||||
...#.......#.#....#...##..#..#.
|
||||
####..#.#.###.#.#..............
|
||||
.##........#...#.#....#..#.....
|
||||
..#..............#.#..##...#.##
|
||||
.###.#.....#.#.....##.#......##
|
||||
....###.....#...#...#.#..#.....
|
||||
....###.#.##.......#....#...#..
|
||||
#..#...#......##..#.....#.#...#
|
||||
....#.#.........#..............
|
||||
#.##.##...#..#.#.#.....#...#.##
|
||||
#...#...#......#...........##..
|
||||
#.#.#......#............#.#....
|
||||
.#.#..######...#.#.........#.##
|
||||
..#.#..#...#......#............
|
||||
....#.....#......##..#.....#...
|
||||
.##............#....##..#......
|
||||
.#.#.#...#.##.............###.#
|
||||
#.#...#...#.....#....#.#.#.....
|
||||
........#..#......##.##.#.....#
|
||||
.....#.....#.#####...#....#....
|
||||
.#...#......#.........#.#......
|
||||
...#...#..##.....##....#..#....
|
||||
....#....##..#.........#.......
|
||||
..#........##..#.#........#....
|
||||
...#...##...........#...#....#.
|
||||
.....##.........#..#....#..#.#.
|
||||
#..#....##..#...##.....#..##.#.
|
||||
..#.#.#.#...#...#.....#.#....#.
|
||||
.......#.###...#.#.......#.#...
|
||||
....#..#..#.###.#.....###..#.#.
|
||||
.#..##......#..#..#....#.####..
|
||||
..##...........#...#.........#.
|
||||
......#..#...#..........#......
|
||||
....#..........#......##...#...
|
||||
....#..#.##........#.#...##.#..
|
||||
#.##......#........##.#...#...#
|
||||
#..#....#.....###........##....
|
||||
...........##.....##..#....#.##
|
||||
..#....#..#..#......#.#.....#..
|
||||
#....#.##....#.....##.......#..
|
||||
.#.....#.#..............#.##..#
|
||||
.#..#..#...#...#....#.#.....#..
|
||||
...###...##.#...#..#........#..
|
||||
#...#.##.#.....#.#....#..#.....
|
||||
#.....###.#.......#.#..#.#..##.
|
||||
....#..#..##.......###.#...#...
|
||||
.#...####...............#.....#
|
||||
.#.##.#.....#.....#.#......##.#
|
||||
#...........#.##....###.##....#
|
||||
...............#..........#....
|
||||
.....#..#.##.###.#.............
|
||||
...##.............#.....#.#..#.
|
||||
....#.#...#.#..#..#..#....#....
|
||||
..#.......#..........#...#...#.
|
||||
...............#.#.#...###....#
|
||||
....#...#.##....#..##....#.....
|
||||
........#.#.##.........##.##.##
|
||||
#.....###.......#.#....#..#..##
|
||||
.#..#...#......#.#..##.......#.
|
||||
#.....#.#........#.##..#..#....
|
||||
.###..##.#.......#......###....
|
||||
.#...###.....#.....#....###...#
|
||||
........##.##......#.#....#...#
|
||||
.#....#..#.........#..##...##..
|
||||
.......#.......##.#..#..##.....
|
||||
#..##..##......#.#......#.##...
|
||||
..#..###..#...#....#..#...#....
|
||||
#.............#.####.........##
|
||||
..#..................#...#..#..
|
||||
..#......#........##.......#.#.
|
||||
.#.#.#.#..###.....#....#.#.....
|
||||
...#.##.###.......#....#.......
|
||||
................##...#.....#...
|
||||
..#.###.#...#.####....#..#..#..
|
||||
..#....###....##..#.#.........#
|
||||
.#..#.#.....#........#....##...
|
||||
.....#..#......#..#..##.#.#....
|
||||
.#..#.........##....##......#..
|
||||
.....#.#...#...#.#...#.#...#.#.
|
||||
..#..#...#...#...##.#..###.....
|
||||
..#..##......#..##.#...##......
|
||||
.......#..##....##.#......#..#.
|
||||
..#......#.#.....#.##....##....
|
||||
..#....#......#......##........
|
||||
....##.#.#....#.......#.##.....
|
||||
#.....#...###....#....#...#....
|
||||
............#.#..#...#...#..#..
|
||||
..##.............##....#.......
|
||||
.#.......#.##.#......#....##...
|
||||
...##............#....#..#...#.
|
||||
.##.####.....#.#..###.#....#.##
|
||||
....##.#........#..#...#.......
|
||||
...#...###.##...........##..#..
|
||||
..##..##....#...#..#..........#
|
||||
..#.........#.#...##..........#
|
||||
.......##....#.#...##.....#..#.
|
||||
.............#.....#.#.......#.
|
||||
#.......#..##..##...##.#.......
|
||||
..............#.....#.#..#...##
|
||||
........##..#.....#...#...#.#..
|
||||
###.#.................#........
|
||||
...#........#...#.#######..#..#
|
||||
...#.##...##.#.#..######...#...
|
||||
#.......#..#....#..#.##.....#..
|
||||
#..#....##....#.##.......#....#
|
||||
#...#..#.#.#...#..#.##..#......
|
||||
....#..##....#..#.#...........#
|
||||
.##..#.#.............###.......
|
||||
#....##......#..#..#.....###...
|
||||
..#..........#...###.#.........
|
||||
.####......#....#......#.#....#
|
||||
..#....#.#.#......#....#.......
|
||||
.....#.....#....#....#####....#
|
||||
.##..........#...#.###....#....
|
||||
....##.....##......#...#.#.....
|
||||
.#...#...#..#.#.#...#####......
|
||||
...#.##..####.##.##.......##...
|
||||
............#.......#..........
|
||||
.#..##.#..#####........#..#...#
|
||||
#......##..##..##.........##...
|
||||
....#....#.............#.#....#
|
||||
###..#.....#.....#.#...#..#.###
|
||||
#...#.......##......#....#.#.#.
|
||||
...#......#..#...#....#...###.#
|
||||
....#....##.......#....#......#
|
||||
............#......##.##.....#.
|
||||
...#.........#......#....##..##
|
||||
.....##....##...#..###...#..#..
|
||||
.......##.#..........#.##.##...
|
||||
....##...........#.#..#..#.##.#
|
||||
#...#..##.##.#....#....#.#.....
|
||||
...##.#.....#..#..#..###....##.
|
||||
#.##.#..#..#.#.............#...
|
||||
..#.#.............###.....#....
|
||||
...#..#....#..#.....#.#..#..#..
|
||||
...#.....##.#...........#..##.#
|
||||
.........#.#.##..#..#.#...#....
|
||||
...#..##..#...#...###.##.#..#..
|
||||
.#..##...##......##..##........
|
||||
......##....##.#.##.#.#........
|
||||
...#..................#.....#..
|
||||
.##................#.#..#..###.
|
||||
.##.##.....#................#..
|
||||
.....#.#..........#...#..#.#..#
|
||||
.............#......#..#.#..#..
|
||||
...#...##..#........#....#.....
|
||||
#......#........##.##...##.....
|
||||
##..#..##....#...#............#
|
||||
..##..##.##....##..##........#.
|
||||
...#....#.#.#.#....#.#...##....
|
||||
....#...##..##.#.##...#..#...#.
|
||||
#..#....##.#.....#.......#...##
|
||||
##.#....#.............#..#.....
|
||||
.##..#..#.#.....#.......#.#..#.
|
||||
.......#..#...##...#...###..#..
|
||||
..........#...#.#..##.....#...#
|
||||
..#....#...........#####....#..
|
||||
#....#..#.......##.............
|
||||
.........##..#####.......##....
|
||||
#..#..........#.....###...#..#.
|
||||
.#.#.#..#...#.......##...#####.
|
||||
.....#....#.###...#.......#....
|
||||
#.#.....##...###....###....#...
|
||||
.#.....#..#.#.#........#...#...
|
||||
.##.#.#.#......#....###....#...
|
||||
.#..##..####......###......#...
|
||||
......#.#.#.#.#...#...####.##..
|
||||
.#........##..#.....#....#....#
|
||||
.....###......##..#....#.......
|
||||
#.#.##...#.#......###..........
|
||||
........#.#...#..#......#....#.
|
||||
..##...##.........#.......#.#..
|
||||
..#.##....#...##.....#.###.....
|
||||
.........#..#.#....#....#.#.##.
|
||||
#.........#......#..#.......#..
|
||||
...#...##.......#.........#....
|
||||
............#......#...........
|
||||
##.....#.....#.#...#.....#.....
|
||||
..#.#...#..#...#.#...........#.
|
||||
#.#.#..#..#...##.#...#.#.....#.
|
||||
.#..###.#..##.#.....#.....#....
|
||||
##....##....#.......##..##.....
|
||||
.#..#...........###..........#.
|
||||
.#..#..#..........###..#.......
|
||||
#..###......#............##...#
|
||||
#......#........#..#..#..#.#...
|
||||
.......#.###...#.##............
|
||||
.##....#.......#.#...##.....#.#
|
||||
....#..#.#.......#.#...........
|
||||
##....#.###.#....#.#..##.#....#
|
||||
..#..#..#....#...#........##...
|
||||
...#...##....#..#.#...#..#.....
|
||||
......#..#......#....#.......#.
|
||||
#.#..............#...###...#..#
|
||||
...#....#..#..........#.#...#..
|
||||
#.....##..##.....#........#....
|
||||
.#...##..#.#..............#....
|
||||
##.#....#..##...#..#.####.#..#.
|
||||
.....#.......#.#.#.#..#.....###
|
||||
...#.##....#.#........##.......
|
||||
#...#.#...#.#..###..##.##...#.#
|
||||
###..............#.#.###.......
|
||||
...###..#.#..#....##...###.#...
|
||||
......##...........#...#..#...#
|
||||
.#..#.........##.......#..#...#
|
||||
.#.......###......##...#...#...
|
||||
.#......##...#........#.......#
|
||||
.#..#.....#.........#.#........
|
||||
#...#.#.....#...#..##.........#
|
||||
......##.#......##.#..##.#.....
|
||||
...............#.#..#....#....#
|
||||
#....#..#..#..#.#.....##...##..
|
||||
#.#......#.###......#..#...####
|
||||
.#.#..#...#...#.#..#.##.##.#.#.
|
||||
.....#.#...###...#.#.....##....
|
||||
...#..#.#..........##.#....#.#.
|
||||
...#..#.#.##.....###.##.#....#.
|
||||
..........#..###......#..#.#...
|
||||
###.....#..###..#...#..###.#...
|
||||
..#..#.....##.#.#..###.......#.
|
||||
....#....##........##..........
|
||||
.......#..........#...#......#.
|
||||
.#........#.#.#.#.#.......#....
|
||||
.#..#.......##..##....#.#...#..
|
||||
.#.#.#.......#..#..............
|
||||
#.#....#.#...#.#.#.....#.#...##
|
||||
.....#..........##..#.......#..
|
||||
.##......#.#....#.#.......#....
|
||||
..#.##....#.##.#...#...........
|
||||
...##......##..##.............#
|
||||
..........##.#.#..#..........#.
|
||||
.##....#..#..#.#....##.#...#.#.
|
||||
...........#....#.....#.#..#...
|
||||
.#.....#....##..#.........#....
|
||||
.....#.....#...#....#...#.###.#
|
||||
..#....#....#.....#...#......#.
|
||||
.....##..#.............#...#...
|
||||
........#..#.......#.#.......#.
|
||||
#...###..#.##.#...###...##..##.
|
||||
....##..#.......#...#.#........
|
||||
.#...#.#.##....####........#..#
|
||||
.#...#.#.####.##.#.............
|
||||
#..##...#....#...#.#.#.#.##..#.
|
||||
.#.......#........#.....###....
|
||||
#.#.....#....#..#....#..#....#.
|
||||
...#..#...#.....#.........##...
|
||||
.#....#......###...#....#.#.#..
|
||||
#.#........#......#...#....##..
|
||||
.....#..#......#..#..#......#..
|
||||
.#.....#..#.##.#.#.#...#......#
|
||||
##........#..#.#..#...#.####...
|
||||
..........##....#.#..#.#....#..
|
||||
#.##..#..#....#..#....##..#.#.#
|
||||
..#......#.......#...##..#.....
|
||||
##...#.........#......#......#.
|
||||
.#.....................#..#.##.
|
||||
.#.......#........#.#.#..##.#..
|
||||
..#..........#........#..##.#..
|
||||
.#...#...#.........##.#.#.#....
|
||||
....#....#.###.#....###....#.##
|
||||
....##......##........##.#.##..
|
||||
....#.#......#.##.#...#.##.....
|
||||
....#....#..#.#..###.#.#.......
|
||||
....#......#..#.#.......#..##..
|
||||
.....#..#.#.##.##..##.....#.#..
|
||||
...#....................##.....
|
||||
#.....#...##...#.#.............
|
||||
..#.#...#.#.#.....##..#....#...
|
||||
|
|
@ -0,0 +1,91 @@
|
|||
use std::fs;
|
||||
|
||||
fn main() -> Result<(), Box<dyn std::error::Error>> {
|
||||
let input = fs::read_to_string("input")?;
|
||||
let slope = parse_slope(&input)?;
|
||||
|
||||
// Part 1
|
||||
let encounters = count_encounters(&slope, (1, 3));
|
||||
println!("{}", encounters);
|
||||
|
||||
// Part 2
|
||||
let encounters: usize = [(1, 1), (1, 3), (1, 5), (1, 7), (2, 1)]
|
||||
.iter()
|
||||
.map(|angle| count_encounters(&slope, *angle))
|
||||
.product();
|
||||
println!("{}", encounters);
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn parse_slope(input: &str) -> Result<Vec<Vec<usize>>, String> {
|
||||
input
|
||||
.lines()
|
||||
.map(|line| {
|
||||
line.chars()
|
||||
.map(|c| match c {
|
||||
'.' => Ok(0),
|
||||
'#' => Ok(1),
|
||||
other => Err(format!("Invalid slope; contains character: {}", other)),
|
||||
})
|
||||
.collect()
|
||||
})
|
||||
.collect()
|
||||
}
|
||||
|
||||
fn count_encounters(input: &Vec<Vec<usize>>, angle: (usize, usize)) -> usize {
|
||||
input
|
||||
.iter()
|
||||
.enumerate()
|
||||
.step_by(angle.0)
|
||||
.map(|(i, row)| row[(i * angle.1 / angle.0) % row.len()])
|
||||
.sum()
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
use indoc::indoc;
|
||||
|
||||
#[test]
|
||||
fn test_simple() -> Result<(), Box<dyn std::error::Error>> {
|
||||
let example = indoc!(
|
||||
"..##.......
|
||||
#...#...#..
|
||||
.#....#..#.
|
||||
..#.#...#.#
|
||||
.#...##..#.
|
||||
..#.##.....
|
||||
.#.#.#....#
|
||||
.#........#
|
||||
#.##...#...
|
||||
#...##....#
|
||||
.#..#...#.#"
|
||||
);
|
||||
|
||||
let parsed = parse_slope(example)?;
|
||||
assert_eq!(count_encounters(&parsed, (1, 3)), 7);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_simple2() -> Result<(), Box<dyn std::error::Error>> {
|
||||
let example = indoc!(
|
||||
"..##.......
|
||||
#...#...#..
|
||||
.#....#..#.
|
||||
..#.#...#.#
|
||||
.#...##..#.
|
||||
..#.##.....
|
||||
.#.#.#....#
|
||||
.#........#
|
||||
#.##...#...
|
||||
#...##....#
|
||||
.#..#...#.#"
|
||||
);
|
||||
|
||||
let parsed = parse_slope(example)?;
|
||||
assert_eq!(count_encounters(&parsed, (2, 1)), 2);
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue