#!/usr/bin/python

import sys
import time
import os

def main():
	args = sys.argv[1:]
	if len(args) < 1:
		print "usage: %s COMMAND" % sys.argv[0]
		sys.exit(1)

	cmd = args[0]

	t1 = time.time()
	os.system(cmd)
	1
	t2 = time.time()

	print (t2-t1)

main()