build函数内没有
```cpp
s[p]=max(s[2*p],s[2*p+1]);
```
by duchengjun @ 2023-07-21 12:08:27
不对啊，这题要开long long啊
by duchengjun @ 2023-07-21 12:09:28
@[duchengjun](/user/501923)
o，大佬！
by so_find_skind @ 2023-07-21 13:23:50
@[duchengjun](/user/501923)
还是不对额
by so_find_skind @ 2023-07-21 13:25:13