```cpp
if(x-to[x]>=1&&!wd[x+to[x]])
{
dis[x-to[x]]=dis[x]+1;
q.push(x-to[x]);
wd[x-to[x]]=1;
}
```
改成
```cpp
if(x-to[x]>=1&&!wd[x-to[x]])
{
dis[x-to[x]]=dis[x]+1;
q.push(x-to[x]);
wd[x-to[x]]=1;
}
```
by Kobe303 @ 2021-04-23 15:28:01
这个地方打错了
by Kobe303 @ 2021-04-23 15:28:33
@[果圆](/user/377511)
by Kobe303 @ 2021-04-23 15:37:12
@[Kobe303](/user/292300) 发现了，已改，非常感谢！
by 果圆 @ 2021-04-26 11:32:00