package nyagami;

import java.util.Scanner;
import java.util.Stack;

public class test{
    
    public static void main(String[] arg){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        Stack<Integer> a = new Stack<>();
        for(int i=0; i<n; i++){
            int x = sc.nextInt();
            if(a.empty()) a.push(x);
            else{
                if((a.lastElement()+x)%2==0) a.pop();
                else a.push(x);
            }
        }
        System.out.print(a.size());
        sc.close();
    }
}