建一个bool数组存去没去过这个点就解决了
by _YTY_ @ 2023-09-20 19:02:39
@[_YTY_](/user/545857) 阿里嘎多
by Touch_head @ 2023-09-20 19:08:23
@[Touch_head](/user/540068) 求关
by _YTY_ @ 2023-09-20 19:09:38
```cpp
a[x][y]=1
```
by xiaofeng_and_xiaoyu @ 2023-09-20 19:13:26
```cpp
!x||!y||x>n||y>m
```
by xiaofeng_and_xiaoyu @ 2023-09-20 19:19:26
还有把两个判断倒过来，亲测有终点是障碍点的毒瘤数据 @[Touch_head](/user/540068)
by xiaofeng_and_xiaoyu @ 2023-09-20 19:20:18