import numpy as np
import optparse


def main():
    cmdlineParser = optparse.OptionParser(usage="")
    (options, args) = cmdlineParser.parse_args()
    path = args[0]
    window = int(args[1])
    half_window = window/2
    f = open(path, "r")
    numbers = []
    for line in f.readlines():
        numbers.append(float(line))

    for i in range(len(numbers)):
        min_id = max(0, i-window)
        print(np.average(numbers[min_id:i+1]))


if __name__ == "__main__":
    main()