感觉滴滴第一题挺简单的啊，难道是我侥幸过了

import java.util.*;

public class Main {
	
	public static void main(String[] args){
		
		Scanner in = new Scanner(System.in);
		
		int n = in.nextInt();
		
		int[] a = new int[n];

		for(int i = 0 ; i < n; i ++){
			a[i] = in.nextInt();
			
		}
		
		
		int lastId = 0;
		int count = 0;
		for(int i = 0 ; i < n ; i++)
		{
			int temp = 0;
			for(int j = i; j >= lastId ; j--){
				temp = temp ^ a[j];
				if(temp == 0) {
					lastId = i + 1;
					count++;
					break;
				}
				
			}	
		}
		System.out.println(count);
	
		
	}
	


	
}