program main
    implicit none
    integer::n
    integer(kind=8)::a(100000),r,x,y,i,j,k
    integer(kind=8)::ans=1
    read*,n
    read*,(a(i),i=1,n)
    do i=1,n
        if(a(i)>0)then
            x=and(a(i),-a(i))
            do j=1,n
                if(i==j)cycle
                if(and(x,a(j))>0)a(j)=xor(a(j),a(i))
            end do
            ans=ans*2
        end if
    end do
    print*,ans
end program