my solutions to advent of code
aylac.top
aoc
advent-of-code
1import gleam/int
2import gleam/io
3import gleam/list
4import gleam/result
5import gleam/string
6import simplifile as file
7
8pub fn main() {
9 let input =
10 file.read(from: "../input.txt")
11 |> result.unwrap("")
12 |> string.trim
13 |> string.split("\n")
14 |> list.map(fn(str) {
15 string.split(str, "x")
16 |> list.map(fn(str) { int.base_parse(str, 10) |> result.unwrap(0) })
17 })
18
19 // part 1
20 input
21 |> list.fold(0, fn(acc, cur) {
22 let sides =
23 cur
24 |> list.combinations(2)
25 |> list.map(fn(v) { list.fold(v, 1, int.multiply) })
26
27 acc
28 + { list.fold(sides, 0, int.add) |> int.multiply(2) }
29 + { list.reduce(sides, int.min) |> result.unwrap(0) }
30 })
31 |> int.to_string
32 |> io.println
33
34 // part 2
35 input
36 |> list.fold(0, fn(acc, cur) {
37 let smallest_perimeter =
38 cur
39 |> list.map(fn(v) { v |> int.multiply(2) })
40 |> list.combinations(2)
41 |> list.map(fn(v) { list.fold(v, 0, int.add) })
42 |> list.reduce(int.min)
43 |> result.unwrap(0)
44
45 acc + smallest_perimeter + list.fold(cur, 1, int.multiply)
46 })
47 |> int.to_string
48 |> io.println
49}