AE00  Rectangles
Byteman has a collection of N squares with side 1. How many different rectangles can he form using these squares?
Two rectangles are considered different if none of them can be rotated and moved to obtain the second one. During rectangle construction, Byteman can neither deform the squares nor put any squares upon any other ones.
Input
The first and only line of the standard input contains one integer N (1 <= N <= 10000).
Output
The first and only line of the standard output should contain a single integer equal to the number of different rectangles that Byteman can form using his squares.
Example
For the input data:
6
the correct result is:
8
Task author: Jakub Radoszewski.
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Ashis:
20140624 19:08:01
AC in first run :) 

shannider:
20140623 00:07:09
If you are getting WA in 10th test case, your algo. is probably wrong for odd 'n'. Last edit: 20140623 00:35:51 

Shireen Nagdive:
20140620 20:50:35
Ac in second attempt :D 

chin:
20140608 14:10:25
got in the frst do!!!!:D


shashank mishra:
20140604 11:48:19
test case 10 is not pass in my code. 

insane0808:
20140527 09:23:47
AC at first go ... :) 

newbie:
20140520 05:17:26
0.01 AC! at last 

newbie:
20140520 04:47:22
timelimit exceeded in the 10th test case 

Mensud Beèar:
20140504 23:06:05
six rows solution, AC at first go :) 

ppppppp:
20140414 19:23:58
dont use float which cost me 5 wa but finally acc 
Added by:  Race with time 
Date:  20090503 
Time limit:  1s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ERL JSRHINO NODEJS PERL6 VB.NET 
Resource:  Algorithmic Engagements 2009 