n, d = read_line.split.map{|i|i.to_i}
a = read_line.split.map{|i|i.to_i}
r = [0]
a.each{|ai|
    r << r[-1] + ai
}
(n - 1).times{|i|
    if r[i + 1] < r[i] + d
        r[i + 1] = r[i] + d
    end
}
puts r.join(" ")