@[wmq2006](/user/330026) 还真没看出来哪里错了(
可以拿题解对拍一下?
by liqingyang @ 2020-04-25 21:15:02
```get```后面加个对节点当前值的更新
by do_while_true @ 2020-04-25 21:20:53
@[do_while_true](/user/223298) 可以写一下代码吗
by wmq2006 @ 2020-04-25 21:24:02
@[liqingyang](/user/272088) 其实是少打了一个等号。。。
by wmq2006 @ 2020-04-25 21:27:10
@[liqingyang](/user/272088) 不过加上了还不对
by wmq2006 @ 2020-04-25 21:30:59
~~树状数组不香吗?~~
by xhQYm @ 2020-04-25 21:31:07
@[qym2008](/user/270120) 可是,区间求和区间加减没法用树状数组啊
by wmq2006 @ 2020-04-25 21:47:02
@[wmq2006](/user/330026) ??谁说的,我用树状数组AC了
by xhQYm @ 2020-04-25 21:48:10
@[qym2008](/user/270120) 膜您
by wmq2006 @ 2020-04-25 22:00:18