n, d = [int(v) for v in input().split()]
a = [0]
b = [int(v) for v in input().split()]
for i in range(n - 1):
    a.append(a[-1] + b[i])

for i in range(n - 1):
    k = a[i + 1] - a[i]
    if k < d:
        a[i + 1] = a[i] + d
print(*a)