[Python] 백준 28279번 : 덱 2 파이썬

https://www.acmicpc.net/problem/28279

28279번: 덱 2

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import sys
from collections import deque

N= int(sys.stdin.readline().rstrip())
deq = deque()

for i in range(N):
    
    command = list(map(int, sys.stdin.readline().rstrip().split()))
    
    if command[0] == 1 :
        deq.appendleft(command[1])
        
    elif command[0] == 2 :
        deq.append(command[1])
            
    elif command[0] == 3 :
        print(deq.popleft() if deq else -1)
        
    elif command[0] == 4 :
        print(deq.pop() if deq else -1)
            
    elif command[0] == 5 :
        print(len(deq))
        
    elif command[0] == 6 :
        print(1 if not deq else 0)
            
    elif command[0] == 7 :
        print(deq[0] if deq else -1)
    
    elif command[0] == 8 :
        print(deq[-1] if deq else -1)