啊这
by feecle6418 @ 2020-06-21 16:56:02
草???
真就一模一样
by Soulist @ 2020-06-21 16:56:31
我还以为他们高大上的去弱化了 北京的题,结果是原题/fad
by Soulist @ 2020-06-21 16:57:02
啊这
by __蒟蒻__ @ 2020-06-21 16:57:06
草 真就没题出了吗
by qwaszx @ 2020-06-21 16:57:14
la ji ccf n m s l
by Qiuly @ 2020-06-21 16:57:30
/fad /fad /fad
ccf可能凉 /youl
by Demoe @ 2020-06-21 16:59:21
~~吃枣药丸~~
by 血色黄昏 @ 2020-06-21 16:59:46
@[Soulist](/user/30036) 不是啊这个题不一样啊
by s_r_f @ 2020-06-21 17:01:54
@[Soulist](/user/30036) 这个题是 \sum gcd,但是题目是 \sum 边权和 乘 gcd
by s_r_f @ 2020-06-21 17:02:14