PRVI

import threading


produkt = 1
lock = threading.Lock()



def mnozenje(x,y):

    global produkt

    lock.acquire()

    for i in range(x,y):

        produkt*=i

    lock.release()

t1=threading.Thread(target=mnozenje, args=(1,750))

t2=threading.Thread(target=mnozenje, args=(751,1500))


t1.start()

t2.start()


t1.join()

t2.join()


print (produkt)