N, D = map(int, input().split())
a = list(map(int, input().split()))
d = [0]

for i in range(N-1):
    d.append(d[-1]+a[i])
    
ans = [0]

for di in d[1:]:
    if di-ans[-1]<D:
        ans.append(ans[-1]+D)
    else:
        ans.append(di)

print(*ans)