One of the simplest sorting algorithms, the Bubble Sort, can be expressed as (0-based array):

procedure bubbleSort( A : list of sortable items )
     n = length(A)
     repeat
          swapped = false
          for i = 1 to n-1 inclusive do
              /* if this pair is out of order */
              if A[i-1] > A[i] then
                   /* swap them and remember something changed */
                   swap( A[i-1], A[i] )
                   swapped = true
               end if
               end for
     until not swapped
end procedure

Now, given an array of N integers, you have to find out how many swap opeartions occur if the Bubble Sort algorithm is used to sort the array.

Input

Input begins with a line containing an integer T (1<=T<=100), denoting the number of test cases. Then T test cases follow. Each test case begins with a line containing an integer N (1<=N<=10000), denoting the number of integers in the array, followed by a line containing N space separated 32-bit integers.

Output

For each test case, output a single line in the format Case X: Y, where X denotes the test case number and Y denotes the number of swap operations needed modulo 10000007.

Example

Input:
1
4
3 2 1 4
Output:
Case 1: 3