图应用2 ■贪吃蛇PoJ1324 不能咬到尾巴撞到墙 (1,1) (1,1) Ba B B2 B Figure 2 Sample Input Figure 3 After ore ste p from figure 2图应用2 ◼ 贪吃蛇 POJ 1324 – 不能咬到尾巴撞到墙