use proconio::input;

fn main() {
    input! {
        t: [i64; 7],
    }

    let mut sum = 0;
    let mut wa = false;
    for &t_i in &t {
        if t_i == -1 {
            wa = true;
        }
        sum += t_i;
        if sum > 6000 {
            wa = true;
        }
        if wa {
            println!("-1");
        } else {
            println!("{}", 6000 - sum);
        }
    }
}