#include <iostream>
#include <vector>

void solve() {
    int n;
    std::cin >> n;

    std::vector<int> xs(n);
    for (auto& x : xs) std::cin >> x;

    int ans = 0;
    for (int i = n - 1; i >= 0; --i) {
        if (xs[i] == 0) continue;

        ++ans;
        for (int j = 0; j < i; ++j) {
            xs[j] = std::min(xs[j], xs[j] ^ xs[i]);
        }
    }

    std::cout << (1 << ans) << std::endl;
}

int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}