n, d = read_line.split.map &.to_i
a = read_line.split.map &.to_i
a.unshift(0)

(1...n).each do |i|
  a[i] += a[i - 1]
end
(1...n).each do |i|
  a[i] = {a[i], a[i - 1] + d}.max
end
puts a.join(' ')