let (n,a,b) = Scanf.scanf "%d %d %d\n" (fun x y z -> (x,y,z))

let pr x = print_endline (string_of_int x)

let (--) m n =
  let rec iter i res =
    if i >= m then iter (i - 1) (i::res)
    else res in
  let rec iter' i res =
    if i <= m then iter' (i + 1) (i::res)
    else res in
  if m <= n then iter n []
  else iter' n []

let digit_list_of_num n =
  let digit n = int_of_float (floor (log10 (float_of_int n))) in
  let base digit = int_of_float (10.0 ** (float_of_int digit)) in
  let rec iter rem res =
    let base = digit rem
              |> base in
    let top = rem / base in
    if base = 1 then top :: res
    else iter (rem - (top * base)) (top :: res) in
  iter n []

let digit_sum n =
  digit_list_of_num n
  |> List.fold_left (fun sum x -> x + sum) 0
    
let () = List.fold_left
           (fun sum x ->
             let ds = digit_sum x in
             if ds >= a && ds <= b then
               sum + x
             else sum) 0 (1--n)
         |> pr
