#include <bits/stdc++.h>

typedef long long ll;
typedef unsigned long long ull;

#define FOR(i,a,b) for(int (i)=(a);i<(b);i++)
#define REP(i,n) FOR(i,0,n)
#define RANGE(vec) (vec).begin(),(vec).end()

using namespace std;

std::vector<unsigned long long> sweep_ull(std::vector<unsigned long long> A)
{
        int n = A.size();
        std::priority_queue<unsigned long long> pque;
        for (int i = 0; i < n; ++i)
            pque.push(A[i]);

        std::vector<unsigned long long> ret;
        while (!pque.empty())
        {
            auto x = pque.top();
            pque.pop();
            ret.push_back(x);
            if (pque.empty())
                break;
            while(!pque.empty())
            {
                auto y =pque.top();
                if ( __builtin_clzl(y) != __builtin_clzl(x) )
                    break;
                pque.pop();
                y ^= x;
                if (y > 0)
                    pque.push(y);
            }
        }
        return ret;
}
unsigned long long mpow(unsigned long long a, int k)
{
        unsigned long long  b = 1;
        while (k > 0)
        {
            if (k & 1)
                b = (b*a);
            a = (a*a);
            k >>= 1;
        }
        return b;
}

class HappyXorHard
{
public:
    void solve(void) {
        int N;
        cin>>N;
        vector<ull> A(N);
        REP(i,N) cin>>A[i];

        A = sweep_ull(move(A));

        int k = count_if(RANGE(A), [](unsigned long long a) { return (a>0); });

        cout<<mpow((ull)2,k)<<endl;
    }
};

#if 1
int main(int argc, char *argv[])
{
        ios::sync_with_stdio(false);
        auto obj = new HappyXorHard();
        obj->solve();
        delete obj;
        return 0;
}
#endif