@[_OJF_](/user/241542)
``` maxson = size[i]```
这句应改为：
``` maxson = size[k]```
当你的树剖 $\tt TLE$ 了没 $\tt WA$ 时，多半就是重链剖错了，重链剖错多半就是 `size` 整错了。
by zhiyangfan @ 2021-12-22 16:23:36
@[zhiyangfan](/user/137603) AC了感谢
by _OJF_ @ 2021-12-22 17:04:29