#include <cstdio>
#include <algorithm>

typedef long long ll;

int N;
ll A[100000];

int main(){
    scanf("%d", &N);
    for(int i=0;i<N;i++){
        scanf("%lld", A+i);
    }

    int rank = 0;
    for(int i=0;i<=60;i++){
        {
            int j = rank;
            for(;j<N;j++){
                if(A[j] >> i & 1){break;}
            }

            if(j == N){continue;}

            std::swap(A[j], A[rank]);
        }

        for(int j=rank+1;j<N;j++){
            if(!(A[j] >> i & 1)){continue;}
            A[j] ^= A[rank];
        }

        ++rank;
    }

    printf("%lld\n", 1ll << rank);
}