#include <iostream>
#include <algorithm>
#include <functional>
#include <string>
#include <limits.h>
#include <vector>
#include <numeric>
using namespace std;


int main(){
	const int Max = 32768;
	int check[Max] = {0};
	int n;
	int plus;
	int ans;
	
	
	check[0] = 2;
	cin >> n;
	for(int i=0; i<n; i++){
		cin >> plus;
		for(int i2=0; i2<Max; i2++){
			if(check[i2] == 2 && check[i2 ^ plus] == 0){
				check[i2 ^ plus] = 1;
			}
		}
		
		//確定
		for(int i2=0; i2<Max; i2++){
			if(check[i2] == 1){
				check[i2] = 2;
			}
		}
	}
	
	//集計
	ans = 0;
	for(int i=0; i<Max; i++){
		if(check[i] == 2){
			ans ++;
		}
	}
	
	cout << ans << endl;
	
	return 0;
}