```cpp
if(nod[t].ls) xadd(nod[t].ls,x,y,z);
if(nod[t].rs) xadd(nod[t].rs,x,y,z);
if(nod[t].ls||nod[t].rs) push_up(t);
```
query和xadd的这个感觉会跑遍整颗树.
by reisen_ @ 2022-07-22 15:30:30
@[reisen_](/user/401978) 还有线段树开小了，应该是4*maxn
by reisen_ @ 2022-07-22 15:39:03
@[reisen_](/user/401978) 万分感谢，已过
此贴终
by Mr_ll @ 2022-09-17 10:31:44