N,D = map(int,input().split())
b = list(map(int,input().split()))
b.insert(0,0)
a = [0]
for i in range(1,N):
    a.append(a[-1] + b[i])
print(0,end = " ")
for i in range(1,N):
    e = " "
    if a[i] - a[i-1] < D:
        a[i] = a[i-1] + D
    if i == N-1:e = ""
    print(a[i],end = e)
print()