제출 #72772

2
empty
front

런타임 에러 (RTE)
stderr:
 Traceback (most recent call last):
  File "Main.py", line 24, in <module>
    print(queue[0])
IndexError: deque index out of range

1
-1

3
back
size
empty

런타임 에러 (RTE)
stderr:
 Traceback (most recent call last):
  File "Main.py", line 26, in <module>
    print(queue[-1])
IndexError: deque index out of range

-1
0
1

6
back
pop
pop
empty
pop
back

런타임 에러 (RTE)
stderr:
 Traceback (most recent call last):
  File "Main.py", line 26, in <module>
    print(queue[-1])
IndexError: deque index out of range

-1
-1
-1
1
-1
-1