#!/usr/bin/env python3

import getopt
import time
import string
import sys
import os

count = 10

opts, args = getopt.getopt(sys.argv[1:], "n:")
for opt in opts:
    if opt[0] == "-n":
        count = int(opt[1])

length = 0.0

i = 0
while i < count:
    begin = time.time()
    cmd = '"' + '" "'.join(args) + '"';
    os.system(cmd)
    length += time.time() - begin
    i += 1

print(length / count, file=sys.stderr)