program main
  implicit none
  character*8::S
  integer*8::c(26),fact(8)
  integer*8::i,indx,total
  data c/26*0/,fact/1,2,6,24,120,720,5040,40320/
  read *,S
  do i=1,LEN_TRIM(S)
     indx = ICHAR(S(i:i))-ICHAR('A')+1
     c(indx) = c(indx) + 1
  end do

  total = fact(LEN_TRIM(S))
  do i=1,26
     if(c(i).gt.1) then
        total = total/fact(c(indx))
     end if
  end do
  print '(i0)',total -1
end program main