@[xht](/user/100544)
by incra @ 2023-09-01 14:27:56
你发到[2023 T2]这个讨论里面去呀
by zhujianheng @ 2023-09-01 14:41:33
zc，这题的计算是有点坑，推导式可能qs不低于黄题的难度，建议评黄
by DZDdzd @ 2023-12-20 21:57:04