import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        Yukicoder solver = new Yukicoder();
        solver.solve(1, in, out);
        out.close();
    }

    static class Yukicoder {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int num = in.nextInt();
            int[] array = new int[num];

            for (int i = 0; i < num; i++) {
                array[i] = in.nextInt();
            }

            int odd = 0;
            int even = 0;
            for (int i = 0; i < num; i++) {
                if (Math.abs(array[i]) % 2 == 0) {
                    even++;
                } else {
                    odd++;
                }
            }
            out.println(Math.abs(odd - even));
        }
    }
}