20 lines
466 B
Elixir
20 lines
466 B
Elixir
defmodule Day13Part1 do
|
|
def run do
|
|
File.read!("input")
|
|
|> String.split(["\n", ","], trim: true)
|
|
|> Enum.reject(&(&1 == "x"))
|
|
|> Enum.map(&String.to_integer/1)
|
|
|> earliest_bus()
|
|
|> (fn {id, time} -> id * time end).()
|
|
|> IO.puts()
|
|
end
|
|
|
|
def earliest_bus([now | busses]) do
|
|
busses
|
|
|> Enum.map(fn bus -> {bus, bus - rem(now, bus)} end)
|
|
|> Enum.min(fn {_, time1}, {_, time2} -> time1 <= time2 end)
|
|
end
|
|
end
|
|
|
|
Day13Part1.run()
|