#include<iostream>
#include<sstream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<string>
#include<vector>
#include<cmath>
#include<set>
#include<map>
#include<stack>
#include<queue>
#include<numeric>
#include<functional>
#include<complex>

using namespace std;
#define BET(a,b,c) ((a)<=(b)&&(b)<(c))
#define FOR(i,n) for(int i=0,i##_end=(int(n));i<i##_end;i++)
#define SZ(x) (int)(x.size())
#define ALL(x) (x).begin(),(x).end()
#define MP make_pair
#define FOR_EACH(it,v) for(__typeof(v.begin()) it=v.begin(),it_end=v.end() ; it != it_end ; it++)
typedef vector<int> VI;
typedef vector<VI> VVI;

#include<bitset>

int binaryRank(vector<long long>& A){
    int n = A.size();
    long long rank = 0;
    FOR(i,64){
        int t = -1;
        for(int j=rank;j<n;j++){
            if((1LL<<i) & A[j]) {
                t = j;
                break;
            }
        }
        if(t == -1) continue;
        swap(A[rank], A[t]);
        FOR(j,n) if(rank != j){
            if(A[j] & (1LL<<i)) A[j] ^= A[rank];
        }
        rank++;
    }
    return rank;
}

int main()
{
    int n;
    cin>>n;
    vector<long long> A(n);
    FOR(i,n){
        scanf("%lld",&A[i]);
    }
    cout<<(1LL<<binaryRank(A))<<endl;

    return 0;
}