刚学c++,就学树剖？？？
by chaichunyang @ 2021-09-21 11:15:11
~~那可不~~
by Violet___Evergarden @ 2021-09-21 11:15:57
照这第一篇看也没发现有毛病啊
by Violet___Evergarden @ 2021-09-21 11:20:28
刚学就绿勾
by CmsMartin @ 2021-09-21 11:23:07
巨佬
by CmsMartin @ 2021-09-21 11:23:28
```cpp
tr[where*2].val+=tr[where].add*(tr[where*2].l-tr[where*2].r+1)%p;
tr[where].val%=p;
```
这是什么操作啊？
by Natsume_Rin @ 2021-09-21 11:29:57
不乘 $2$ 吗？
by Natsume_Rin @ 2021-09-21 11:30:30
树剖？？？
by 小僵僵 @ 2021-09-21 11:31:27
@[Adp_Ycc](/user/261914) 懒标记啊
by Violet___Evergarden @ 2021-09-21 11:33:23
@[Adp_Ycc](/user/261914) 啊这...我改改
by Violet___Evergarden @ 2021-09-21 11:33:55