character*10000::str
  character::c
  integer::sum=0
  data str/""/
  read *,str

  do i=1,len_trim(str)
     c = str(i:i)
     if (c < '0' .or. c > '9') then
        str(i:i)='0'
     end if
  end do
  do i=1,len_trim(str)
     sum = sum + ICHAR(str(i:i))-ICHAR('0')
  end do

  print '(i0)',sum
end program