day_3

For part 1, matching all regexes like mul(1,4), capturing the numbers and then summing the products is enough.

For part 2, we can non-greedily match everything between don't() and do() (or line end) and replace that with an empty string, as we don’t want to consider those blocks. This leaves us with the same problem as part 1, which means we can reuse the same function.

pub fn get_mult_sum(s: String) -> Int

pub fn load_rows() -> String

pub fn main() -> Nil

pub fn part_1() -> String

pub fn part_2() -> String

pub fn remove_dont_blocks(input_string: String) -> String