import strutils,sequtils,sugar

var nd = readLine(stdin).split.mapIt(it.parseInt)
var a  = readLine(stdin).split.mapIt(it.parseint)
var n = nd[0]
var d = nd[1]

var ls = @[0]
for x in a:
    ls.add(ls[ls.len-1] + x)

var lim = n-2
for i in 0..lim:
    var dif = ls[i+1] - ls[i]
    if dif < d:
        ls[i+1] += (d-dif)

echo join(ls," ")