唉，还有一天打NOIp，我连平板电视都不会用，，，
by 幽灵特工 @ 2021-11-18 13:27:52
@[wdy1028](/user/523541)
```
if(!a[xx] || a[yy] || fx == fy)
```
改为
```
if(!(a[xx] || a[yy] || fx == fy))
```
by PrincessQi @ 2021-11-19 15:26:57
@[PrincessQi](/user/104662) 谢谢，过了
by wdy1028 @ 2021-11-19 17:16:31