Submission #17275313

---

Source Code Expand

defmodule Main do
  def main do
    IO.read(:line)

    IO.read(:line)
    |> String.trim()
    |> String.split(" ")
    |> Enum.map(&String.to_integer/1)
    |> solve()
    |> IO.puts()
  end

  @doc ~S"""
  https://atcoder.jp/contests/abc088/tasks/abc088_b

  ## Examples

      iex> Abc088B.solve([3, 1])
      2
      iex> Abc088B.solve([2, 7, 4])
      5
      iex> Abc088B.solve([20, 18, 2, 18])
      18

  """
  def solve(list) do
    sorted_list = Enum.sort(list, :desc)
    alice_list = Enum.take_every(sorted_list, 2)
    Enum.sum(alice_list) * 2 - Enum.sum(list)
  end
end

Submission Info

Judge Result