import math._

object Main {
  def main(args: Array[String]) {
    val sc = new java.util.Scanner(System.in)
    val n = sc.nextInt
    val xs = (1 to n) map { _ => sc.nextInt }

    val evens = xs filter { e => abs(e) % 2 == 0 }
    val odds  = xs filter { e => abs(e) % 2 == 1 }
    println(abs(evens.length - odds.length))
  }
}