import java.util.Scanner;

public class Main{
	public static void main(String[] args){
		Scanner s = new Scanner(System.in);
		while(s.hasNext()){
			int n = s.nextInt();
			int xor = 0;
			int count = 0;
			for(int i = 0; i< n; i++){
				int a = s.nextInt();
				xor ^= a;
				if(a == 0 || xor ==0){
					count ++;
					xor =0;
				}
			}
			System.out.println(count);
		}
		
	}
}