human
XOR of XORs of all sub | Function to find to required XOR value.
Nested loop to find the number of sub - matrix each index belongs to.
Number of ways to choose from top - left elements.
Number of ways to choose from bottom - right elements.
Driver code"
Solution in Python:
 What is a code to xOR of XORs of all sub and the other steps required?
assistant
#Here is code to xOR of XORs of all sub and the other steps required.
 def submatrixXor ( arr , n ) :
	ans = 0
	for i in range ( 0 , n ) :
		for j in range ( 0 , n ) :
			top_left = ( i + 1 ) * ( j + 1 )
			bottom_right = ( n - i ) * ( n - j )
			if ( top_left % 2 == 1 and bottom_right % 2 == 1 ) :
				ans = ( ans ^ arr [ i ] [ j ] )
	return ans
n = 3
arr = [ [ 6 , 7 , 13 ] , [ 8 , 3 , 4 ] , [ 9 , 7 , 6 ] ]
print ( submatrixXor ( arr , n ) )