n, k = map(int, input().split())
a = list(map(int, input().split()))
b = [0] * (n - k + 1)
for i in range(k):
	b[0] += (-1)**i * (i + 1) * a[i]
for i in range(1, k + 1):
	b[1] += (-1)**(i + 1) * i * a[i]
# s = (b[0] + b[1] - a[0] - (-1)**(k + 1) * k * a[k]) * (-1)
s = b[0] + b[1]
print(b[0], b[1], end=' ')
for i in range(2, n - k + 1):
	s -= a[i - 2] + (-1)**(k + 1) * k * a[i + k - 2]
	s = -s + (-1)**(k + 1) * a[i + k - 2] + (-1)**(k + 1) * a[i + k - 1]
	b[i] = s - b[i - 1]
	print(b[i], end=' ')