2017年4月8日
poj2991 Crane（线段树）
摘要： Description ACM has bought a new crane (crane -- jeřáb) . The crane consists of n segments of various lengths, connected by flexible joints. The end o 阅读全文
posted @ 2017-04-08 07:40 Klaier 阅读(580) 评论(0) 推荐(0) 编辑