Data-Structure:deque

# ID Name Difficulty Solver
1 abc237_d G. LR insertion 544 11221
2 arc077_a C. pushpush 552 11740
3 abc158_d D. String Formation 610 13700
4 abc246_e H. Bishop 2 1476 4554
5 arc072_d F. Dam 3414 706
6 typical90_bi 061. Deck(★2) null 7897
7 past202104_e E. Third from Front null 831