파이썬 - 자료형

defaultdict

from collections import 
var = defaultdict(int)

list

#n 길이의 list 선언
list = [0] * n

heapq

from heapq import * 

hq=[]
heapify(hq)

heappush(hq,3)
heappush(hq,2)
heappush(hq,1)
print(hq)
#[1, 3, 2]

heappop(hq)
print(hq)
#[2, 3]