建图时写错了,调了 2 个小时,寄。
```c
ve[b+j*n].push_back(make_pair(a+j+n,l));
```
应为
```c
ve[b+j*n].push_back(make_pair(a+j*n,l));
```
by zjinze @ 2023-11-11 16:41:37
此贴结
by zjinze @ 2023-11-11 16:41:59