human
Maximize count of pairs whose bitwise XOR is even by replacing such pairs with their Bitwise XOR | Function to maximize the count of pairs with even XOR possible in an array by given operations.
Stores count of odd array elements.
Traverse the array.
If arr [ i ] is odd.
Stores the total number of even pairs.
Driver Code.
Input.
Function call to count the number of pairs whose XOR is even"
How can the above be solved in Python?

Give me a code to maximize count of pairs whose bitwise XOR is even by replacing such pairs with their Bitwise XOR and the other steps required?
assistant
#Here is code to maximize count of pairs whose bitwise XOR is even by replacing such pairs with their Bitwise XOR and the other steps required.
 def countPairs ( arr , N ) :
	odd = 0
	for i in range ( N ) :
		if ( arr [ i ] & 1 ) :
			odd += 1
	ans = ( N - odd + odd // 2 - 1 ) + odd // 2
	return ans
if __name__ == ' _ _ main _ _ ' :
	arr = [ 4 , 6 , 1 , 3 ]
	N = len ( arr )
	print ( countPairs ( arr , N ) )