human
Check if a subsequence of length K with odd sum exists | Function to check if any required subsequence exists or not.
Store count of odd and even elements in the array.
Calculate the count of odd and even elements.
If no odd element exists or no even element exists when K even.
Subsequence is not possible.
Otherwise possible.
Driver code"
How can the above be solved in Python?
 What is a code to check if a subsequence of length K with odd sum exists and the other steps required?
assistant
#Here is code to check if a subsequence of length K with odd sum exists and the other steps required.
 def isSubseqPossible ( arr , N , K ) :
	i = 0
	odd = 0
	even = 0
	for i in range ( N ) :
		if ( arr [ i ] % 2 == 1 ) :
			odd += 1
		else :
			even += 1
	if ( odd == 0 or ( even == 0 and K % 2 == 0 ) ) :
		return False
	return True
if __name__ == ' _ _ main _ _ ' :
	arr = [ 2 , 3 , 5 , 7 , 4 ]
	N = len ( arr )
	K = 3
	print ( " Yes " if isSubseqPossible ( arr , N , K ) else " No " )