JOIN
Get Time
forums   
Search | Watch Thread  |  My Post History  |  My Watches  |  User Settings
View: Flat (newest first)  | Threaded  | Tree
Previous Thread  |  Next Thread
Counting number of Derangements ! | Reply
Hi,
I was reading this tutorial and I am facing problems to understand the counting of Derangements by the sieve principle (i am getting confused with the notations basically).It would be nice if someone explained this again here ;)

Thanks in advance!
Re: Counting number of Derangements ! (response to post by RosyIsh) | Reply
Try Inclusion Exclusion Principle.
There is some DIV1 500 , I don't remember you can try to find it using Google.
EDIT : Here is the problem http://www.topcoder.com/stat?c=problem_statement&pm=2013
RSS