import heapq
import itertools
import os
import threading
import time


heap = []

class Integer(int):
    def __lt__(self, other):
        time.sleep(1e-7)
        return int(self) < int(other)


def resize_heap():
    initializers = [
        list(map(Integer, range(n))) for n in (10, 2000)]
    for initializer in itertools.cycle(initializers):
        heap[:] = initializer
        time.sleep(1e-7)


def push_pop_heap():
    while True:
        heapq.heappush(heap, Integer(5))
        if heap:
            heapq.heappop(heap)


if __name__ == "__main__":
    t1 = threading.Thread(target=resize_heap)
    t1.start()
    t2 = threading.Thread(target=push_pop_heap)
    t2.start()
    try:
        while True:
            time.sleep(10)
    finally:
        os._exit(0)