FASHION  Fashion Shows
A fashion show rates participants according to their level of hotness. Two different fashion shows were organized, one for men and the other for women. A date for the third is yet to be decided ;) .
Now the results of both fashion shows are out. The participants of both the fashion shows have decided to date each other, but as usual they have difficuly in choosing their partners. The Maximum Match dating serive (MMDS) comes to their rescue and matches them in such a way that that maximizes the hotness bonds for all couples.
If a man has been rated at hotness level x and a women at hotness level y, the value of their hotness bond is x*y.
Both fashion shows contain N participants each. MMDS has done its job and your job is to find the sum of hotness bonds for all the couples that MMDS has proposed.
Input
The first line of the input contains an integer t, the number of test cases. t test cases follow.
Each test case consists of 3 lines:
 The first line contains a single integer N (1 <= N <= 1000).
 The second line contains N integers separated by single spaces denoting the hotness levels of the men.
 The third line contains N integers separated by single spaces denoting the hotness levels of the women.
All hotness ratings are on a scale of 0 to 10.
Output
For each test case output a single line containing a single integer denoting the sum of the hotness bonds for all pairs that MMDS has proposed.
Example
Input: 2 2 1 1 3 2 3 2 3 2 1 3 2 Output: 5 15
hide comments
ErtiChris Eelmaa:
20130527 19:25:19
Very easy. Took me 34 minutes. 

Filipe Bittencourt [UNIFEI]:
20130417 04:17:42
MMDS hasn't done it's job!


Sivaraman Nagarajan:
20130223 16:51:45
Move it to tutorial 

Mahavir Chopra:
20130104 15:34:17
upload is not wrking


Hasil Sharma:
20130103 04:24:03
Python nails this question !!! but seriously question is under specified !!! MMDS hasn't done it's job :P 

VARUN KUMARE:
20130101 11:56:41
hey guys! also try it...


Haijun Deng:
20121211 07:18:23
More test cases needed 

Gandaro:
20120908 10:29:43
“MMDS has done its job and your job is to find the sum of hotness bonds for all the couples that MMDS has proposed.”

Added by:  Matthew Reeder 
Date:  20061029 
Time limit:  1s 
Source limit:  30000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ERL JSRHINO NODEJS PERL6 VB.NET 
Resource:  AlKhawarizm 2006 