정답 개수:
20
틀린 개수:
80
실행 실패 개수:
0
5 pop push 794 size front size
-1 1 -1 1
-1 1 794 1
6 pop push 391 front pop empty empty
-1 -1 391 1 1
-1 391 391 1 1
15 push 66 back front back front size pop push 676 back empty back push 144 empty size back
66 -1 66 -1 1 66 676 0 676 0 2 144
66 66 66 66 1 66 676 0 676 0 2 144