2019年9月6日
hdu 1541 （cdq分治）
摘要： Problem Description Astronomers often examine star maps where stars are represented by points on a plane and each star has Cartesian coordinates. Let 阅读全文
posted @ 2019-09-06 18:26 WAKBGAN 阅读(151) 评论(0) 推荐(0) 编辑