import threading
import datetime
import gc
import random

class ThreadClass(threading.Thread):
    def run(self):
        now = datetime.datetime.now()
        for i in range(10):
            random.random()
        print "%s says Hello World at time: %s\n" %(self.getName(), now)
now = datetime.datetime.now()
print "Program started at %s." %(now)

for i in range(30):
    t = ThreadClass()
    t.start()
now = datetime.datetime.now()
print "Multithread completed %s." %(now)

x = raw_input()