n,d=gets.split.map(&:to_i)
a=gets.split.map(&:to_i)

ls = [0]

a.each{|x|ls << ls[-1] + x}

for i in 0..n-2 do
    dif = ls[i+1] - ls[i]
    if dif < d then
        ls[i+1] += (d-dif)
    end
end

puts ls.join(' ')