Day 1

Day 1: Calorie Counting

Day 1: Calorie Counting

Input

input = """
1000
2000
3000

4000

5000
6000

7000
8000
9000

10000
"""

Part 1

f = fn
  "" -> ""
  s -> String.to_integer(s)
end

sum = fn
  [""] -> 0
  list -> Enum.sum(list)
end

input
|> String.split("\n")
|> Enum.map(f)
|> Enum.chunk_by(&(&1 == ""))
|> Enum.map(sum)
|> Enum.max()

Part 2

f = fn
  "" -> ""
  s -> String.to_integer(s)
end

sum = fn
  [""] -> 0
  list -> Enum.sum(list)
end

input
|> String.split("\n")
|> Enum.map(f)
|> Enum.chunk_by(&(&1 == ""))
|> Enum.map(sum)
|> Enum.sort(:desc)
|> Enum.take(3)
|> Enum.sum()