📌문제설명 📌문제풀이 소스코드 import sys class Deque: def __init__(self): self.deque = [] def push_front(self, x): self.deque.insert(0, x) def push_back(self, x): self.deque.append(x) def pop_front(self): if len(self.deque) == 0: print(-1) else: print(self.deque.pop(0)) def pop_back(self): if len(self.deque) == 0: print(-1) else: print(self.deque.pop()) def size(self): print(len(self.deque)) def empty(self):..
