#include <bits/stdc++.h>
#define GET_MACRO(a, b, c, NAME, ...) NAME
#define rep(...) GET_MACRO(__VA_ARGS__, rep3, rep2)(__VA_ARGS__)
#define rep2(i, a) rep3 (i, 0, a)
#define rep3(i, a, b) for (int i = (a); i < (b); i++)
#define repr(...) GET_MACRO(__VA_ARGS__, repr3, repr2)(__VA_ARGS__)
#define repr2(i, a) repr3 (i, 0, a)
#define repr3(i, a, b) for (int i = (b) - 1; i >= (a); i--)
#define chmin(a, b) ((b) < a && (a = (b), true))
#define chmax(a, b) (a < (b) && (a = (b), true))
using namespace std;
typedef long long ll;

const int mx = 1 << 15;
bool dp[mx];

int main() {
    int N;
    cin >> N;
    vector<int> A(N);
    rep (i, N) cin >> A[i];
    dp[0] = true;
    rep (i, N) {
        rep (j, mx) {
            dp[A[i] ^ j] |= dp[j];
        }
    }
    int ans = 0;
    rep (i, mx) {
        ans += dp[i];
    }
    cout << ans << endl;
    return 0;
}