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

怎么都用时这么少过了,是高精度算法比较优秀吗?还是公式比较高效?

Posted by vk at 2005-08-01 20:32:32 on Problem 2515
我的公式:
TN[k] = (n+1)^k;
c(k+1,i)是从k+1里选i个的组合数
T[k] = TN[k+1] - sigma(c(k+1,i)*T[i];i=0,…,k-1)-1;
T[m]即为所求

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