@[L_B_L](/user/461616) https://www.luogu.com.cn/problem/P6329
by FGgirl @ 2023-01-06 16:32:52
点分树
by wcyQwQ @ 2023-01-06 17:00:03
你们都学到这儿了吗，恐怖至极
by Stinger @ 2023-01-06 17:02:44
强强强，此帖终结
by Judgelight @ 2023-01-06 20:52:24