2018年4月2日
Red and Black POJ - 1979
摘要： 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. F... 阅读全文
posted @ 2018-04-02 20:20 focus5679 阅读(96) 评论(0) 推荐(0) 编辑