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#![feature(iter_next_chunk)]
fn main() {
part1();
part2();
}
fn part1() {
let input = include_str!("../input");
let mut ans = 0;
for line in input.lines() {
let mut split = line
.split(',')
.flat_map(|elf| elf.split('-').flat_map(|x| x.parse::<u32>()));
let b1 = split.next().unwrap();
let e1 = split.next().unwrap();
let b2 = split.next().unwrap();
let e2 = split.next().unwrap();
let s1 = b1..=e1;
let s2 = b2..=e2;
if s1.contains(&b2) && s1.contains(&e2) || s2.contains(&b1) && s2.contains(&e1) {
ans += 1;
}
}
println!("{}", ans);
}
fn part2() {
let input = include_str!("../input");
let mut ans = 0;
for line in input.lines() {
let mut split = line
.split(',')
.flat_map(|elf| elf.split('-').flat_map(|x| x.parse::<u32>()));
let b1 = split.next().unwrap();
let e1 = split.next().unwrap();
let b2 = split.next().unwrap();
let e2 = split.next().unwrap();
let s1 = b1..=e1;
let s2 = b2..=e2;
if s1.contains(&b2) || s1.contains(&e2) || s2.contains(&b1) || s2.contains(&e1) {
ans += 1;
}
}
println!("{}", ans);
}
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