#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];

    bool dp[(1<<15)+1];
    fill(dp, dp + (1 << 15) + 1, false);
    dp[0] = true;

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

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

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