Submission #19864680

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defmodule Main do
  def main() do
    [_n, m] =
      IO.read(:line) |> String.trim() |> String.split(" ") |> Enum.map(&String.to_integer/1)
    ab_of_lists =
      1..m
      |> Enum.reduce([], fn _, acc ->
        list =
          IO.read(:line) |> String.trim() |> String.split(" ") |> Enum.map(&String.to_integer/1)
        [list | acc]
      end)
    k = IO.read(:line) |> String.trim() |> String.to_integer()
    cd_of_lists =
      1..k
      |> Enum.reduce([], fn _, acc ->
        list =
          IO.read(:line) |> String.trim() |> String.split(" ") |> Enum.map(&String.to_integer/1)
 
 
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defmodule Main do
  def main() do
    [_n, m] =
      IO.read(:line) |> String.trim() |> String.split(" ") |> Enum.map(&String.to_integer/1)

    ab_of_lists =
      1..m
      |> Enum.reduce([], fn _, acc ->
        list =
          IO.read(:line) |> String.trim() |> String.split(" ") |> Enum.map(&String.to_integer/1)

        [list | acc]
      end)

    k = IO.read(:line) |> String.trim() |> String.to_integer()

    cd_of_lists =
      1..k
      |> Enum.reduce([], fn _, acc ->
        list =
          IO.read(:line) |> String.trim() |> String.split(" ") |> Enum.map(&String.to_integer/1)

        [list | acc]
      end)

    product(cd_of_lists)
    |> Enum.map(fn list ->
      Enum.count(ab_of_lists, fn [a, b] ->
        a in list && b in list
      end)
    end)
    |> Enum.max()
    |> IO.puts()
  end

  def product(list_of_lists) do
    Enum.reduce(list_of_lists, [[]], fn [x, y], acc1 ->
      Enum.reduce(acc1, [], fn list, acc2 ->
        [[x | list], [y | list] | acc2]
      end)
    end)
  end
end

Submission Info

Judge Result