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

第一步算错了

Posted by xuerdawas at 2003-11-20 22:43:13 on Problem 1286
In Reply To:请教 Posted by:pladene at 2003-11-20 18:17:16
> 这题我用的Burnside定理,当n是偶数的时候算出来不对。以n = 4为例。
> 有(1)四个旋转置换,(2)两个对角线置换和(3)两个对边中点连线的对称置换
> |G| = 8;
> (1) 81 + 3 + 3 + 3 = 90;
~~~~~~~~~~~~~~~~~~~~~~~~~~~
这里应该是81+3+3+9
> (2) 2*3*3*3 = 54;
> (3) 2*3*3 = 18;
> (1)+(2)+(3)
> 90 + 54 + 18 = 162.为什么不是8的倍数啊?

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