2018年4月29日
CodeForces 620E New Year Tree(线段树的骚操作第二弹)
摘要： The New Year holidays are over, but Resha doesn't want to throw away the New Year tree. He invited his best friends Kerim and Gural to help him to red 阅读全文
posted @ 2018-04-29 10:15 Styx-ferryman 阅读(279) 评论(0) 推荐(0) 编辑