#include<bits/stdc++.h>
using namespace std;

int main(){
    long n,v,ans=1;
    vector<long> base;
    cin>>n;
    while(n--){
        cin>>v;
        for(auto e:base)v=min(v,v^e);
        if(v>0){
            base.push_back(v);
            ans*=2;
        }
    }
    cout<<ans<<endl;
}