import sys
import thread
import time

main() {
	thread.create(work)
	thread.create(work)
	thread.create(work)
	work()
}

work() {
	sys.write(1, "[ ] start\n", 10)
	time.sleep(10 * 1000 * 1000)
	sys.write(1, "[x] end\n", 8)
	sys.exit(0)
}