human
Write me a code to check if a string can be made empty by repeatedly removing given subsequence and the other steps required given the following:
Check if a string can be made empty by repeatedly removing given subsequence | Function to check if a string can be made empty by removing all subsequences of the form " GFG " or not.
Driver Code"
How can the above be solved in Python?
assistant
#Here is code to check if a string can be made empty by repeatedly removing given subsequence and the other steps required.
 def findIfPossible ( N , str_ ) :
	countG = 0
	countF = 0
	for i in range ( N ) :
		if str_ [ i ] == ' G ' :
			countG += 1
		else :
			countF += 1
	if 2 * countF != countG :
		print ( " NO " )
	else :
		id = 0
		flag = True
		for i in range ( N ) :
			if str_ [ i ] == ' G ' :
				countG -= 1
				id += 1
			else :
				countF -= 1
				id -= 1
			if id < 0 :
				flag = False
				break
			if countG < countF :
				flag = False
				break
		if flag :
			print ( " YES " )
		else :
			print ( " NO " )
n = 6
str_ = " GFGFGG "
findIfPossible ( n , str_ )