use itertools::Itertools;

fn begin_datagram(datagram: &str, size: usize) -> usize {
    size + datagram
        .as_bytes()
        .windows(size)
        .position(|window| window.iter().tuple_combinations().all(|(a, b)| a != b))
        .unwrap()
}

pub fn solve_part1(content: &str) -> i32 {
    begin_datagram(content, 4) as i32
}

pub fn solve_part2(content: &str) -> i32 {
    begin_datagram(content, 14) as i32
}