We are given a row wise sorted matrix of size r*c, we need to find the median of the matrix given. It is assumed that r*c is always odd.

**Input:**

The first line of input contains an integer T denoting the number of test cases. Each test case contains two integers r and c, where r is the number of rows and c is the number of columns in the array a[]. Next r line contains space separated c elements each in the array a[].

**Output:**

Print an integer which is the median of the matrix.

**Constraints:**

1<= T <=100

1<= r,c <=100

1<= a[i][j] <=1000

**Example:**

Input:

1

3 3

1 3 5

2 6 9

3 6 9

**Output:**

5

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