module mdl
contains

    function ispower2(n)
        integer*8,value::n
        logical::ispower2
        do while(mod(n,2)==0.and.n>0)
            n=n/2
        end do
        ispower2=n==1
    end function
end module


program main
    use mdl
    implicit none
    integer*8::n,i
    read*,n
    do i=1,min(n-1,10)
        if(.not.ispower2(i).and..not.ispower2(n-i))then
            print"(i0,' ',i0)",i,n-i
            return
        end if
    end do
    print*,-1
end program