@[smartpig](/user/129647)
```cpp
void cz2(int x,int y)
...
res+=query(1,1,cnt,id[x],id[y]);
...
```
这句话要取模
by oisdoaiu @ 2019-11-13 08:37:05
过了!
谢谢大佬!
by smartpig @ 2019-11-13 08:54:12