defmodule Main do
  def main do
    n =
      IO.read(:line)
      |> String.trim()
      |> String.to_integer()

    a =
      IO.read(:line)
      |> String.split()
      |> Enum.map(&String.to_integer/1)
      |> Enum.sort()

    solve(n, a)
    |> IO.puts()
  end

  def solve(n, a) do
    cond do
      n |> rem(2) == 0 ->
        ((a |> Enum.at((n |> div(2)) - 1)) + (a |> Enum.at(n |> div(2)))) / 2

      true ->
        a |> Enum.at((n - 1) |> div(2))
    end
  end
end