pub trait Day: std::fmt::Debug {
    fn part1(&mut self) -> String;
    fn part2(&mut self) -> String;
    fn part1_large(&mut self) -> String {
        self.part1()
    }
    fn part2_large(&mut self) -> String {
        self.part2()
    }
    fn parse(&mut self) {}
    fn solve(&mut self, part: u8, large: bool) -> String {
        self.parse();
        match part {
            1 => match large {
                false => self.part1(),
                true => self.part1_large(),
            },
            2 => match large {
                false => self.part2(),
                true => self.part2_large(),
            },
            _ => panic!("Invalid part #"),
        }
    }
}