human
Minimize cost to rearrange substrings to convert a string to a Balanced Bracket Sequence | Function to count minimum number of operations to convert the string to a balanced bracket sequence.
Initialize the integer array.
Traverse the string.
Decrement a [ i ].
Increment a [ i ].
Update the sum as current value of arr [ i ].
If answer exists.
Traverse from i.
Find all substrings with 0 sum.
Print the sum of sizes.
No answer exists.
Driver Code"
How can the above be solved in Python?

Write me a code to minimize cost to rearrange substrings to convert a string to a Balanced Bracket Sequence and the other steps required?
assistant
#Here is code to minimize cost to rearrange substrings to convert a string to a Balanced Bracket Sequence and the other steps required.
 def countMinMoves ( str ) :
	n = len ( str )
	a = [ 0 for i in range ( n ) ]
	j , ans , sum = 0 , 0 , 0
	for i in range ( n ) :
		if ( str [ i ] == ' ) ' ) :
			a [ i ] += sum - 1
		else :
			a [ i ] += sum + 1
		sum = a [ i ]
	if ( sum == 0 ) :
		i = 1
		while ( i < n ) :
			j = i - 1
			while ( i < n and a [ i ] != 0 ) :
				i += 1
			if ( i < n and a [ i - 1 ] < 0 ) :
				ans += i - j
				if ( j == 0 ) :
					ans += 1
			i += 1
		print ( ans )
	else :
		print ( " - 1" )
if __name__ == ' _ _ main _ _ ' : str = " ) ( ( ) "
	countMinMoves ( str )