Online JudgeProblem SetAuthorsOnline ContestsUser
Web Board
Home Page
F.A.Qs
Statistical Charts
Problems
Submit Problem
Online Status
Prob.ID:
Register
Update your info
Authors ranklist
Current Contest
Past Contests
Scheduled Contests
Award Contest
User ID:
Password:
  Register

Re:公式的推导

Posted by New_Coder at 2010-12-22 10:42:28 on Problem 2140
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:
User ID:
Password:
Title:

Content:

Home Page   Go Back  To top


All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator