python – How to terminate the whole program when one of two methods running in parallel returns a result?

Here is a simple example. I am trying to find a maximum element in an incremented array which only contains positive integers. I want to let two algorithms run find_max_1 and find_max_2 in parallel, then the whole program terminates when one algorithm returns a result. Notice that the example stated here is just a simplification of the actual problem. In other words,it returns the fastest result and terminates the slower ones.

def find_max_1(array):
    # method 1, just return the last element
    return array(len(array)-1)


def find_max_2(array):
    # method 2
    solution = array(0);
    for n in array:
        solution = max(n, solution)
    return solution

if __name__ == '__main__':
    # Two algorithms run in parallel, when one returns a result, the whole program stop
    pass

I hope I explained my question clearly and correctly. I find I can use event and terminate in multiprocessing, all processes terminate when event.is_set() is true.

def find_max_1(array, event):
    # method 1, just return the last element
    event.set()
    return array(len(array)-1)


def find_max_2(array, event):
    # method 2
    solution = array(0);
    for n in array:
        solution = max(n)
    event.set()
    return solution


if __name__ == '__main__':
    # Two algorithms run in parallel, when one returns a result, the whole program stop
    event = multiprocessing.Event()
    array = (1, 2, 3, 4, 5, 6, 7, 8, 9... 1000000007)
    p1 = multiprocessing.Process(target=find_max_1, args=(array, event,))
    p2 = multiprocessing.Process(target=find_max_2, args=(array, event,))
    jobs = (p1, p2)
    p1.start()
    p2.start()
    p1.join()
    p2.join()
    while True:
        if event.is_set():
            for p in jobs:
                p.terminate()
            sys.exit(1)
        time.sleep(2)

But not efficient. I wonder if two processes run concurrently or in parallel in the above method?

If there is a better implementation to solve it? Thank you very much!