240
笔下虽有千言,胸中实无一策
摘要: [Problem] Given a 2D grid, each cell is either a wall 2, an house 1 or empty 0 (the number zero, one, two), find a place to build a post office so tha 阅读全文
posted @ 2017-09-13 23:21 CasperWin 阅读(971) 评论(0) 推荐(0) 编辑