Day 6

Section

input = """
Time:      7  15   30
Distance:  9  40  200
"""

input = """
Time:        49     78     79     80
Distance:   298   1185   1066   1181
"""

input = """
Time:      71530
Distance:  940200
"""

input = """
Time:        49787980
Distance:   298118510661181
"""

input =
  String.split(input, "\n", trim: true)
  |> Enum.reduce({[], []}, fn i, acc ->
    {keys, values} = acc
    [key, value] = String.split(i, ":")

    value =
      String.split(value, ~r/\s+/, trim: true)
      |> Enum.map(&String.to_integer(&1))
      |> IO.inspect()

    {[key | keys], [value | values]}
  end)

{keys, values} = input

# one millimeters per millisecond
test_list =
  List.zip(values)
  |> Enum.map(fn {d, t} ->
    %{distance: d, time: t}
  end)

defmodule Day6 do
  def get_ops(max) do
    Enum.map(0..max, fn i ->
      to_travel = max - i
      distance = to_travel * i

      %{time: i, distance: distance}
    end)
  end
end

test_list

Enum.reduce(test_list, 1, fn %{time: t, distance: d}, acc ->
  r =
    Day6.get_ops(t)
    |> Enum.filter(fn %{distance: dd} -> dd > d end)
    |> IO.inspect()
    |> length()

  acc * r
end)