정답 개수:
33
틀린 개수:
67
실행 실패 개수:
0
7 empty back empty pop back front back
1 -1 1 -1 -1 null -1
1 -1 1 -1 -1 -1 -1
14 back push 774 back front size size pop back size front back back push 784 pop
-1 774 774 1 1 774 -1 0 null -1 -1 784
-1 774 774 1 1 774 -1 0 -1 -1 -1 784
15 empty empty pop empty empty front empty push 927 push 866 pop push 272 pop size push 942 front
1 1 -1 1 1 null 1 927 866 1 272
1 1 -1 1 1 -1 1 927 866 1 272