import java.util.Scanner;

public class No99 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int evencnt = 0;
		for(int i = 0;i < N;i++) {
			if(sc.nextInt() % 2 == 0) {
				evencnt++;
			}
		}
		
		System.out.println(Math.abs(2*evencnt - N));
	}
}