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n, k = map(int, input().split())
a = list(map(int, input().split()))
for i in range(n):
    cnt = 0
    sum = 0
    for j in range(n):
        dis = min(abs(i-j), n-abs(i-j))
        if dis <= k:
            sum += a[j]
            cnt += 1
    avg = sum / cnt
    print(f'{avg:.2f}')