AoC 2020 Day 3 min lines after rustfmt

aoc2020d3p1.rs

pub fn part1(input: &str) -> impl std::fmt::Display {
    input.lines().enumerate().fold(0, |a, x| {
        a + (x.1.as_bytes()[(x.0 * 3) % x.1.len()] == b'#') as u32
    })
}

aoc2020d3p2.rs

pub fn part2(input: &str) -> impl std::fmt::Display {
    (|f: &dyn Fn(_, _) -> _| f(1, 1) * f(3, 1) * f(5, 1) * f(7, 1) * f(1, 2))(&|x, y| {
        input.lines().enumerate().fold(0, |a, (i, l)| {
            a + (l.as_bytes()[i / y * x % l.len()] == b'#' && i % y == 0) as usize
        })
    })
}