let read () = Scanf.scanf "%d " (fun i -> i)

let level = 6

let () =
  let n = read () in
  let t = Array.make level 0 in
  let rec doit i m =
    if i = n then m
    else begin
      let l = read () in
      let l = l - 1 in
      t.(l) <- t.(l) + 1;
      doit (i + 1) (max m t.(l))
    end in
  let m = doit 0 min_int in
  let rec doit i =
    if t.(i) = m then i + 1
    else doit (i - 1) in
  doit (level - 1) |> Printf.printf "%d\n"