정답 개수:
0
틀린 개수:
10
실행 실패 개수:
0
5 size pop empty pop front
0 -1 1 -1 -1
14 pop size size front empty empty push 638 back size front front empty back push 370
-1 0 0 -1 1 1 638 1 638 638 0 638
15 push 637 size size size front empty front push 483 front empty empty front back pop size
1 1 1 637 0 637 637 0 0 637 483 637 1