破案了，
```cpp
for (rint i = h[x]; i; i = ne[i])
{
int y = e[i];
dfs(y, x + w[i]);
}
```
应该是 `dfs(y,d[x]+w[i])`
没有环的时候`cout << 3 << " " << res << endl;`
应该是`cout << res << " " << 3 << endl;`
by PassName @ 2022-09-18 12:54:48