 |
| ||||
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:公式的推导In Reply To:公式的推导 Posted by:Ly86 at 2010-04-25 19:03:36 > (k+1)a+0.5*k*(k＋1)=n成立 > 划成 > (a + 0.5*k)(k+1)=n k+1 也可以是 偶数呀 推理不 严密 Followed by: Post your reply here: |
All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator
