human
Count of Ways to obtain given Sum from the given Array elements | Function to call dfs to calculate the number of ways.
If target + sum is odd or S exceeds sum.
No sultion exists.
Return the answer.
Driver Code"
Solution in Python:
 Can you provide a code to count of Ways to obtain given Sum from the given Array elements and the other steps required?
assistant
#Here is code to count of Ways to obtain given Sum from the given Array elements and the other steps required.
 def knapSack ( nums , S ) :
	sum = 0 ;
	for i in range ( len ( nums ) ) :
		sum += nums [ i ] ;
	if ( sum < S or - sum > - S or ( S + sum ) % 2 == 1 ) :
		return 0 ;
	dp = [ 0 ] * ( ( ( S + sum ) // 2 ) + 1 ) ;
	dp [ 0 ] = 1 ;
	for j in range ( len ( nums ) ) :
		for i in range ( len ( dp ) - 1 , nums [ j ] - 1 , - 1 ) :
			dp [ i ] += dp [ i - nums [ j ] ] ;
	return dp [ len ( dp ) - 1 ] ;
if __name__ == ' _ _ main _ _ ' :
	S = 3 ;
	arr = [ 1 , 2 , 3 , 4 , 5 ] ;
	answer = knapSack ( arr , S ) ;
	print ( answer ) ;