@[zhaoxubing](/user/908394) hack:
```
1 1
1
```
答案为 $1$,而你的输出为 $0$
by Yinsh @ 2023-03-23 21:33:45
你的代码并没有处理当所有点都无法向四周扩展时的答案,这时答案为 $1$,你会输出 $0$
by Yinsh @ 2023-03-23 21:35:42
@[Yinsh](/user/478014)
谢谢大佬,您的帮助实在是很有用,已关注;
by zhaoxubing @ 2023-03-23 21:48:24
@[Yinsh](/user/478014) 感谢
by pray4u @ 2023-11-07 15:22:41