2017年4月2日
ZOJ 3780 Paint the Grid Again（隐式图拓扑排序）
摘要： Leo has a grid with N × N cells. He wants to paint each cell with a specific color (either black or white). Leo has a magical brush which can paint an 阅读全文
posted @ 2017-04-02 21:33 Blackops 阅读(410) 评论(0) 推荐(0) 编辑