baekjoon - python - 1927

www.acmicpc.net/problem/1927

1927번: 최소 힙

# @Author YoungMinKim
# baekjoon

import heapq
import sys
N = int(sys.stdin.readline())
heap = []
for _ in range(N):
    num = int(sys.stdin.readline())
    if num == 0:
        if len(heap) == 0:
            print(0)
        else:
            print(heapq.heappop(heap))
    else:heapq.heappush(heap,num)