摘要：传送门 There is a forest that we model as a plane and live nn rare animals. Animal number iihas its lair in the point (xi,yi)(xi,yi). In order to protect 阅读全文

摘要：Letters CodeForces - 978C 题意：n个寝室，每个寝室多个房间（1-a[i]）,一共m封信只知道房间号，现在要求把信送到第几个寝室的第几个房间里去，房间号从第一个寝室到第n个寝室的第一个房间到最后一个房间排下去 题意：用个二分查找吧，省点时间，二分才658ms，爆搜1600多m 阅读全文