如果在边缘数组会越界吧，加一个防越界函数试试：
```cpp
int cross_border (int n) {
if (n > 0) {
return n;
}
return 0;
}
```
by Jimmy_Cudo @ 2024-03-24 09:29:07
@[xiaobeichen](/user/1016101)
by Jimmy_Cudo @ 2024-03-24 09:29:56