---cargo
---

static CONTENT: &'static str = include_str!("./inputs/02_1.txt");

fn main() {
    let ranges: Vec<_> = CONTENT.split(',').map(|l| l.trim()).filter(|l| !l.is_empty()).map(|l| {
        let (raw_start, raw_end) = l.split_once('-').unwrap();
        let start: usize = raw_start.parse().unwrap();
        let end: usize = raw_end.parse().unwrap();

        start..=end
    }).collect();

    println!("Ranges: {:?}", ranges);

    let mut result = 0;
    for r in ranges.iter() {
        for v in r.clone() {
            let len = v.ilog10() + 1;
            if len % 2 != 0 {
                continue;
            }

            let first_half = v / 10_usize.pow(len/2);
            let second_half = v - (first_half * 10_usize.pow(len/2));

            if first_half == second_half {
                result += v;
                println!("Invalid {} - Halves ({}, {})", v, first_half, second_half);
            }
        }
    }

    println!("Result: {}", result);
}