From each cell, you can either move to four directions: left, right, up or down.

从每一个单元格出发，你可以向四个方向移动：左右上下。

youdao

From each cell, you can either move to four directions: left, right, up or down.

从每一个单元格出发，你可以向四个方向移动：左右上下。

youdao