#include <iostream>
#include <vector>
#include <cstring>
using namespace std;

int dp[5001][1<<16];

int main(void) {
    int N;
    vector<int> A;

    cin >> N;
    A.resize(N);

    for (int i = 0; i < N; i++) cin >> A[i];

    dp[0][0] = 1;
    for (int i = 0; i < N; i++) {
        for (int j = 0; j <= (1 << 15); j++) {
            dp[i+1][j] = dp[i][j] || dp[i][j^A[i]];
        }
    }

    int ans = 0;
    for (int i = 0; i <= (1 << 15); i++) {
        ans += dp[N][i];
    }

    cout << ans << endl;
    return 0;
}