character*10000::str
  character::c
  integer::sum=0
  read *,str
  do i=1,len_trim(str)
     c = str(i:i)
     if (c >= '0' .and. c <= '9') then
        sum = sum + ICHAR(c)-ICHAR('0')
     end if
  end do
  print '(i0)',sum
end