# Day 1: Historian Hysteria
```elixir
Mix.install([:kino])
```
## Section
```elixir
input = Kino.Input.textarea("input")
```
```elixir
input = Kino.Input.read(input) |> String.split("\n", trim: true)
```
## Part 1
```elixir
lists = Enum.reduce(input, %{left: [], right: []}, fn (item, %{left: left, right: right}) ->
[l, r] = String.split(item, " ", trim: true) |> Enum.map(&(String.to_integer(&1)))
%{left: [l | left], right: [r | right]}
end)
Enum.zip([Enum.sort(lists.left), Enum.sort(lists.right)]) |>
Enum.map(fn
{l, r} when r > l -> r - l
{l, r} when r <= l -> l - r
end) |>
Enum.sum()
```
## Part 2
```elixir
%{left: left, right: right} = Enum.reduce(input, %{left: [], right: []}, fn (item, %{left: left, right: right}) ->
[l, r] = String.split(item, " ", trim: true) |> Enum.map(&(String.to_integer(&1)))
%{left: [l | left], right: [r | right]}
end)
Enum.reduce(left, 0, fn (left_item, acc) ->
acc + Enum.count(right, fn i -> left_item == i end) * left_item
end)
```
