use std::fs;
use std::io::{self, Read};

fn solver(bytes: &Vec<u8>, marker_len: u32) -> u32 {
    let mut count = marker_len;
    for view in bytes.windows(marker_len as usize) {
        let mut acc: u32 = 0;
        for elt in view {
            acc |= 1 << (elt - 96);
        }
        if u32::count_ones(acc) >= marker_len {
            break;
        }
        count +=