package main

import . "fmt"

func main() {
	var n, d, x0,x1 int64
	Scan(&n,&d)
	Print(x1)
	for i:=int64(1);i<n;i++ {
		var a int64
		Scan(&a)
		x0+=a
		if x1+d<x0 {
			x1=x0
		} else {
			x1+=d
		}
		Print(" ", x1)
	}
	Println()
}