2019年2月28日
bzoj 2212 [Poi2011]Tree Rotations
摘要： Byteasar the gardener is growing a rare tree called Rotatus Informatikus. It has some interesting features: The tree consists of straight branches, bi 阅读全文
posted @ 2019-02-28 23:57 zjxxcn 阅读(125) 评论(0) 推荐(0) 编辑