Easy Going.(Very Easy)
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## Very-Easy

Problem
Editorial
Analytics

Coders here is a simple task for you, you have given an array of size N and an integer M.
Your task is to calculate the difference between maximum sum and minimum sum of N-M elements of the given array.

Constraints:
1<=t<=10
1<=n<=1000
1<=a[i]<=1000

Input:
First line contains an integer T denoting the number of testcases.
First line of every testcase contains two integer N and M.
Next line contains N space separated integers denoting the elements of array
Output:
For every test case print your answer in new line

SAMPLE INPUT
1
5 1
1 2 3 4 5
SAMPLE OUTPUT
4
Explanation

M is 1 and N is 5 so you have to calculate maximum and minimum sum using (5-1 =) 4 elements.
Maximum sum using the 4 elements would be (2+3+4+5=)14.
Minimum sum using the 4 elements would be (1+2+3+4=)10.
Difference will be 14-10=4.

Time Limit: 1.0 sec(s) for each input file.
Memory Limit: 256 MB
Source Limit: 1024 KB

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