fn main() {
    let v = read_vec::<usize>();
    let (n, d) = (v[0], v[1] as i64);
    let a = read_vec::<i64>();
    let mut poses = vec![0];
    for i in 0..n - 1 {
        poses.push(poses[poses.len() - 1] + a[i]);
    }
    for i in 1..n {
        poses[i] = std::cmp::max(poses[i], poses[i - 1] + d);
    }
    for pos in poses {
        print!("{} ", pos);
    }
    println!("");
}

fn read<T: std::str::FromStr>() -> T {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim().parse().ok().unwrap()
}

fn read_vec<T: std::str::FromStr>() -> Vec<T> {
    read::<String>()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}