import math
import sys
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def MI(): return map(int, sys.stdin.readline().rstrip().split())
def LI(): return list(map(int, sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())

n, d = MI()
b = LI()
a = [0]
for i in range(n-1):
    a.append(a[-1]+b[i])
    
for i in range(n-1):
    if a[i+1] - a[i] < d:
        a[i+1] = a[i]+d

print(*a)