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
umohan: 2017-10-02 23:10:01

Wrong Explanation

bhargav14: 2017-09-21 17:56:54

AC in 1 go! :D

hitesh87: 2017-09-20 19:21:26

AC in one go

shubham9261: 2017-08-15 13:51:29

was getting a NZEC error cuz of declaring the return type of main as void changed it to int and got ac!!!!!!
be careful

bhuvi9: 2017-08-14 07:35:43

Why do we need to sort?

arnav11: 2017-06-13 21:50:37

15th ! easy but formally learnt a new inequality

viratian_070: 2017-05-28 13:08:00

very easy question!!
dont waste your time on it

yassir_mimouni: 2017-04-16 13:10:13

yo
what's up dudes

Last edit: 2017-04-16 13:10:38
youssefifk: 2017-04-16 11:52:44

Too easy dude

masterbios: 2017-03-19 08:36:35

MMDS has not done his job! but why it's mention it's Done:(


Added by:Matthew Reeder
Date:2006-10-29
Time limit:0.970s
Source limit:30000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: ERL JS-RHINO NODEJS PERL6 VB.NET
Resource:Al-Khawarizm 2006