n, d = map(int, input().split())
a = list(map(int, input().split()))
s = [0] * n
for i in range(1, n):
    s[i] = s[i - 1] + a[i - 1]
for i in range(1, n):
    s[i] = max(s[i], s[i - 1] + d)
print(*s)