let solve lst =
  let len_lst = List.length lst
  and even_num = List.filter (fun n -> n mod 2 = 0) lst |> List.length
  in
  let odd_num = len_lst - even_num in
  abs (even_num - odd_num)

let () =
  let _ = read_line ()
  and x_lst = read_line () |>
              Str.split (Str.regexp_string " ") |>
              List.map int_of_string
  in
  solve x_lst |> string_of_int |> print_endline