let solve n =
  let len_n = String.length n in
  let rec count_hole' i result =
    if i >= len_n then
      result
    else
      let d =
        match n.[i] with
        | '0' | '4' |'6' |'9' -> 1
        | '8' -> 2
        | _ -> 0
      in
      count_hole' (i + 1) (result + d)
  in
  let h_num = count_hole' 0 0 in
  min (len_n * 2 + 1 + h_num) ((1 + h_num) * 2 + len_n)

let () =
  let n = read_line () in
  solve n
  |> string_of_int
  |> print_endline