# Advent 2024 - Day 11
```elixir
Mix.install([
{:kino, "~> 0.14.2"}
])
```
## Setup
```elixir
input = Kino.Input.textarea("Please paste your input file")
```
```elixir
input = input
|> Kino.Input.read()
|> String.split(" ")
|> Enum.map(&(String.to_integer/1))
```
## Part 1
```elixir
1..25
|> Enum.reduce(input, fn _, acc ->
for stone <- acc do
if stone == 0 do
[1]
else
stone_as_text = Integer.to_string(stone)
stone_length = String.length(stone_as_text)
if rem(stone_length, 2) == 0 do
{a, b} = String.split_at(stone_as_text, div(stone_length, 2))
[
String.to_integer(a),
String.to_integer(b)
]
else
stone * 2024
end
end
end
|> List.flatten()
end)
|> Enum.count()
```
## Part 2
```elixir
input = Enum.frequencies(input)
update_count = fn map, stone, count ->
map
|> Map.put(stone, Map.get(map, stone, 0))
|> Map.update!(stone, fn current_count -> current_count + count end)
end
1..75
|> Enum.reduce(input, fn _, acc ->
Enum.reduce(acc, %{}, fn {stone, count}, acc ->
if stone == 0 do
update_count.(acc, 1, count)
else
stone_as_text = Integer.to_string(stone)
stone_length = String.length(stone_as_text)
if rem(stone_length, 2) == 0 do
{a, b} = String.split_at(stone_as_text, div(stone_length, 2))
acc = update_count.(acc, String.to_integer(a), count)
update_count.(acc, String.to_integer(b), count)
else
update_count.(acc, stone * 2024, count)
end
end
end)
end)
|> Map.values()
|> Enum.sum()
```
