2017年11月20日
CodeForces 884A.B.C Book Reading（水） | Japanese Crosswords Strike Back（水） | Bertown Subway（DFS）
摘要： Recently Luba bought a very interesting book. She knows that it will take t seconds to read the book. Luba wants to finish reading as fast as she can. 阅读全文
posted @ 2017-11-20 20:29 Zireael 阅读(1266) 评论(0) 推荐(0) 编辑