n, d = map(int, input().split())
a = list(map(int, input().split()))  # a_2 to a_n, length n-1

current = [0] * n
for i in range(1, n):
    current[i] = current[i-1] + a[i-1]

for i in range(1, n):
    required = current[i-1] + d
    if current[i] < required:
        current[i] = required

print(' '.join(map(str, current)))