xht @ 2019-12-06 22:09:44
见帮助中心 https://help.luogu.com.cn/rules/academic/problem-standard。
by zr太弱了 @ 2019-12-06 22:22:44
前排
by Cola @ 2019-12-06 22:22:46
前排
by MistZero @ 2019-12-06 22:23:09
前排资瓷
by wind_cross @ 2019-12-06 22:25:11
前排资瓷
by A_Đark_Horcrux @ 2019-12-06 22:25:52
前排资瓷
by Lagibol @ 2019-12-06 22:28:06
前排资瓷
by Alex_Wei @ 2019-12-06 22:28:42
中前排
强烈资瓷，简直是出题人的福音啊
by rui_er @ 2019-12-06 22:29:09
兹磁
by zimujun @ 2019-12-06 22:32:02
后排
by PolyLoger @ 2019-12-06 22:33:23
中排