 |
| ||||
Home Page
F.A.Qs
Statistical Charts
Past Contests
Scheduled Contests
Award Contest
| ||||||||||
| Online Judge | Problem Set | Authors | Online Contests | User | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Web Board Home Page F.A.Qs Statistical Charts | Current Contest Past Contests Scheduled Contests Award Contest | |||||||||
Re:不就是求逆序数码？离散化+树状数组水的过吗？In Reply To:Re:不就是求逆序数码？离散化+树状数组水的过吗？ Posted by:cug_fish2008 at 2009-10-13 22:11:29 树状数组可以统计前缀和，在添加某个数之前统计一下前缀和，表示统计之前出现的不大于当前数字的个数，，接下来就能自己推了吧 Followed by: Post your reply here: |
All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator
