program main
  implicit none
  integer*8::N
  integer*8::upper,lower,len,head,num=0,i
  character*19::S
  character*10::uf='(i )'
  character*10::lf='(i9)'
  read *,S
  len = LEN_TRIM(S)
  if(len.le.9) then
     print '("0")'
     return
  end if

  write(uf(3:3),'(i0)'), len-9
  read (S,uf), upper
  read (S(1:1),'(i1)') head
  read (S(len-8:len),lf), lower

  do i=0,len-10
     num = num+head*10**i
  end do
!  print *, head, num, upper, lower
  if (upper.gt.num) then
     print '(i0)', (len-10)*9+head
  else if (upper.eq.num.and.lower.ge.num) then
     print '(i0)', (len-10)*9+head
  else
     print '(i0)', (len-10)*9+head-1
  end if

contains
  subroutine aprinter(array)
    integer*8::array(:)
    character*32::cformat='(i0,     (1x,i0))'
    write(cformat(5:9),'(i0)'),size(array)
    write(*,cformat) array
  end subroutine aprinter
end program main