poj_1979(dfs)
摘要：
Red and Black There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. Fro 阅读全文
posted @ 2017-05-13 11:22 夏晴天 阅读(76) 评论(0) 推荐(0) 编辑
