```
你骑自行车去上学,自行车只能沿着街道走,而且为了缩短时间只允许沿着向东和北的方向行驶。
```
by lnwsh @ 2020-08-11 09:22:42
```
在迷宫中移动有上下左右四种方式,每次只能移动一个方格。
```
by lnwsh @ 2020-08-11 09:23:07
```cpp
行车只能沿着街道走,而且为了缩短时间只允许沿着向东和北的方向行驶。
```
by _蒟蒻—信含_ @ 2020-08-11 09:23:28
```cpp
在迷宫中移动有上下左右四种方式,每次只能移动一个方格。
```
by _蒟蒻—信含_ @ 2020-08-11 09:23:57
啊这
竟然撞了qaq
by _蒟蒻—信含_ @ 2020-08-11 09:24:24
![](https://cdn.luogu.com.cn/upload/image_hosting/il6k666c.png)
by JRzyh @ 2020-08-11 09:46:06
![](https://cdn.luogu.com.cn/upload/image_hosting/il6k666c.png)
by xyf007 @ 2020-08-11 09:47:50