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Given a row wise sorted matrix of size RxC where R and C are always odd, find the median of the matrix.

**Example 1:**

**Input**:
R = 3, C = 3
M = [[1, 3, 5],
[2, 6, 9],
[3, 6, 9]]
**Output:** 5
**Explanation**:
Sorting matrix elements gives us
{1,2,3,3,5,6,6,9,9}. Hence, 5 is median.

**Example 2:**

**Input:**
R = 3, C = 1
M = [[1], [2], [3]]
**Output: **2

**Your Task: **

You don't need to read input or print anything. Your task is to complete the function **median()** which takes the integers R and C along with the 2D matrix as input parameters and returns the median of the matrix.

**Expected Time Complexity:** O(32 * R * log(C))

**Expected Auxiliary Space:** O(1)

**Constraints:**

1<= R,C <=150

1<= matrix[i][j] <=2000

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Median in a row-wise sorted Matrix

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