!-------モジュール
module quicksort_function
    implicit none
   contains
    !再帰型副関数
    recursive function qsort(x) result(quick)
        integer(4), allocatable :: quick(:)
        integer(4), intent(in)  :: x(:)
        integer(4) mid
        mid=(size(x)/2)
        if (size(x) > 1) then
            quick = [qsort(pack(x,x<x(mid))),pack(x,x==x(mid)),qsort(pack(x,x>x(mid)))]
        else
            quick = x
        end if
    end function qsort
end module quicksort_function

!------主プログラム
program Sort
    use quicksort_function
    implicit none
    integer(4) m,n,i,a
    integer(4),allocatable :: x(:)
    integer(4),allocatable :: y(:)
    read(*,*) n
    allocate (x(1:n))
    allocate (y(1:n))
    read(*,*) (x(m),m=1,n)
    y=qsort(x)
    do i=1,n
        if (y(i-1)/=y(i).and.y(i)/=y(i+1)) then
            a=a+1
        end if
    end do
    write(*,*) a
end program Sort