import java.util.Scanner;
public class No99 {

	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		int n = s.nextInt() , k = 0;
		s.nextLine();
		for(int i = 0;i < n;i++){
			if(Math.abs(s.nextInt() % 2) == 1){
				k++;
			}else{
				k--;
			}
		}
		s.close();

		System.out.println(Math.abs(k));

	}

}