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

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

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

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

    int dp[(1<<15)+1];
    bool dbl = false;
    dp[0] = 1;

    for (int i = 0; i < N; i++) {
        if (A[i] == (1 << 14)) {
            dbl = true;
            continue;
        }

        for (int j = 0; j < (1 << 14); j++)
            dp[j^A[i]] = dp[j];
    }

    int ans = 0;
    for (int i = 0; i < (1 << 14); i++) {
        ans += dp[i];
    }

    if (dbl) ans *= 2;

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