51 lines
1.3 KiB
Rust
51 lines
1.3 KiB
Rust
|
use std::ops::RangeInclusive;
|
||
|
|
|
||
|
|
use aoc_runner_derive::{aoc as aoc_run, aoc_generator};
|
||
|
|
|
||
|
|
type Contents = (RangeInclusive<u32>, RangeInclusive<u32>);
|
||
|
|
|
||
|
|
#[aoc_generator(day4)]
|
||
|
|
fn parse_input(input: &str) -> Vec<Contents> {
|
||
|
|
let mut out = Vec::with_capacity(input.len());
|
||
|
|
for line in input.lines() {
|
||
|
|
let mut split = line.split(',');
|
||
|
|
let a = split.next().unwrap();
|
||
|
|
let b = split.next().unwrap();
|
||
|
|
let mut asplit = a.split('-');
|
||
|
|
let mut bsplit = b.split('-');
|
||
|
|
let alo = asplit.next().unwrap().parse().unwrap();
|
||
|
|
let ahi = asplit.next().unwrap().parse().unwrap();
|
||
|
|
let blo = bsplit.next().unwrap().parse().unwrap();
|
||
|
|
let bhi = bsplit.next().unwrap().parse().unwrap();
|
||
|
|
out.push(((alo..=ahi), (blo..=bhi)));
|
||
|
|
}
|
||
|
|
|
||
|
|
out
|
||
|
|
}
|
||
|
|
|
||
|
|
#[aoc_run(day4, part1)]
|
||
|
|
fn part1(scheds: &[Contents]) -> u32 {
|
||
|
|
let mut out = 0;
|
||
|
|
for (a, b) in scheds {
|
||
|
|
if (a.contains(b.start()) && a.contains(b.end()))
|
||
|
|
|| (b.contains(a.start()) && b.contains(a.end()))
|
||
|
|
{
|
||
|
|
out += 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
out
|
||
|
|
}
|
||
|
|
|
||
|
|
#[aoc_run(day4, part2)]
|
||
|
|
fn part2(scheds: &[Contents]) -> u32 {
|
||
|
|
let mut out = 0;
|
||
|
|
for (a, b) in scheds {
|
||
|
|
if (a.contains(b.start()) || a.contains(b.end()))
|
||
|
|
|| (b.contains(a.start()) || b.contains(a.end()))
|
||
|
|
{
|
||
|
|
out += 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
out
|
||
|
|
}
|