n, d = map(int, input().split())
b = list(map(int, input().split()))
a = [0] * n
for i in range(1, n):
    a[i] = a[i - 1] + b[i - 1]
for i in range(n):
    if i != 0:
        a[i] = max(a[i], a[i - 1] + d)
    print(a[i], end=' ' if i != n - 1 else '\n')