#include <bits/stdc++.h>
using namespace std;
using ll = long long;
constexpr ll inf = (1LL << 62);
template <typename T>
bool chmax(T& a, const T& b)
{
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}
template <typename T>
bool chmin(T& a, const T& b)
{
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}
char dp[5010][1 << 15];
int main()
{
    ll n;
    cin >> n;
    vector<ll> a(n);
    for (ll i = 0; i < n; ++i) {
        cin >> a[i];
    }
    dp[0][0] = 1;
    for (ll i = 0; i < n; ++i) {
        for (ll j = 0; j < (1 << 15); ++j) {
            //if(dp[i][j] == 1){
            //    dp[i+1][j] = 1;
            //} else {
            //
            //}
            dp[i + 1][j] = dp[i][j ^ a[i]] | dp[i][j];
        }
    }
    ll cnt = 0;
    for (ll i = 0; i < (1 << 15); ++i) {
        if (dp[n][i] == 1) {
            cnt++;
        }
    }
    cout << cnt << endl;
}