func main()
	var N: int :: cui@input().toInt(&)
	var ss: [][]char :: cui@input().split(" ")
	var ans: int
	for i(0, N - 1)
		var x: int :: ss[i].toInt(&)
		do ans :+ x % 2 = 0 ?(1, -1)
	end for
	do ans :: ans.abs()
	do cui@print("\{ans}\n")
end func