#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

constexpr int inputLimit = 2 << 14;

int main()
{
	int n;
	cin >> n;

	vector<int> a(n);
	for(auto& x : a) {
		cin >> x;
	}

	vector<vector<bool>> dp(n + 1, vector<bool>(inputLimit + 1, false));
	dp[0][0] = true;
	for(auto i = 0; i < n; ++i) {
		for(auto j = 0; j <= inputLimit; ++j) {
			if(dp[i][j]) {
				dp[i + 1][j] = dp[i][j];
				dp[i + 1][j ^ a[i]] = dp[i][j];
			}
		}
	}

	int result = 0;
	for(auto i = 0; i <= inputLimit; ++i) {
		if(dp[n][i]) {
			++result;
		}
	}

	cout << result << endl;
}