정답 개수:
0
틀린 개수:
5
실행 실패 개수:
0
6 front push 623 back pop back front
-1 623 623-1 -1
-1 623 623 -1 -1
9 size push 570 pop back pop empty size push 695 pop
0 570-1 00 -1 0
0 570 -1 -1 1 0 695
13 back pop push 45 front back empty push 533 front pop size pop size back
-1 0-1 -1 1 533 5330 0-1 533
-1 -1 45 45 0 45 45 1 533 0 -1