const TS_PACKET_SIZE: usize = 188;
const EIT_SEGMENT_LIMIT: usize = 4096;

const ITEMS_1: &[usize] = &[195, 207];
const RESULT_1: usize = 564;

const ITEMS_2: &[usize] = &[509, 131];
const RESULT_2: usize = 752;

const ITEMS_3: &[usize] = &[
    189, 380, 1070, 324, 429, 439, 229, 387,
    933, 741, 582, 229, 203, 643, 582, 1070,
    380, 508, 459, 1072, 713, 468, 465, 336,
    459, 1072, 382, 331, 1108, 933, 599, 924,
    434, 401, 345, 324, 370, 701, 711, 599,
    468, 243, 1108, 508, 459, 1072, 131, 924,
    478, 333, 459, 1072, 890, 382, 66, 1089,
    701, 930, 643, 372, 392, 349, 342, 370,
    465, 604, 930, 465
];
const RESULT_3: usize = 40984;

fn calc_ts(value: usize) -> usize {
    if value % TS_PACKET_SIZE > 0 {
        ((value - (TS_PACKET_SIZE - 3))/ (TS_PACKET_SIZE - 4) + 1) * TS_PACKET_SIZE + TS_PACKET_SIZE
    }
    else {
        value
    }
}

fn calc(items: &[usize]) -> usize {
    let mut s: usize = 0;
    let mut res: usize = 0;
    for item in items {
        if s + *item > EIT_SEGMENT_LIMIT {
            res += calc_ts(s);
            s = *item;
        }
        else {
            s += *item;
        }
    }
    res += calc_ts(s);
    res
}

fn main() {
    assert_eq!(calc(ITEMS_1), RESULT_1);
    assert_eq!(calc(ITEMS_2), RESULT_2);
    assert_eq!(calc(ITEMS_3), RESULT_3);
    println!("Ok");
}