import io
import sys
import thread
import time

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

work() {
	io.out("[ ] start\n")
	time.sleep(10 * 1000 * 1000)
	io.out("[x] end\n")
	sys.exit(0)
}