commit 7c0cfdeee7553f21615cc0a89328649bd5dc7054 · aylac.top/advent_of_code

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2025/7/gleam/gleam.toml

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       name = "main"

     

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       version = "1.0.0"

     

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       # Fill out these fields if you intend to generate HTML documentation or publish

     

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       # your project to the Hex package manager.

     

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       #

     

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       # description = ""

     

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       # licences = ["Apache-2.0"]

     

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       # repository = { type = "github", user = "", repo = "" }

     

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       # links = [{ title = "Website", href = "" }]

     

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       #

     

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       # For a full reference of all the available options, you can have a look at

     

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       # https://gleam.run/writing-gleam/gleam-toml/.

     

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       [dependencies]

     

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       gleam_stdlib = ">= 0.44.0 and < 2.0.0"

     

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       simplifile = ">= 2.3.0 and < 3.0.0"

     

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       [dev-dependencies]

     

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       gleeunit = ">= 1.0.0 and < 2.0.0"

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2025/7/gleam/manifest.toml

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       # This file was generated by Gleam

     

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       # You typically do not need to edit this file

     

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       packages = [

     

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         { name = "filepath", version = "1.1.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "filepath", source = "hex", outer_checksum = "B06A9AF0BF10E51401D64B98E4B627F1D2E48C154967DA7AF4D0914780A6D40A" },

     

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         { name = "gleam_stdlib", version = "0.65.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "7C69C71D8C493AE11A5184828A77110EB05A7786EBF8B25B36A72F879C3EE107" },

     

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         { name = "gleeunit", version = "1.7.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "CD701726CBCE5588B375D157B4391CFD0F2F134CD12D9B6998A395484DE05C58" },

     

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         { name = "simplifile", version = "2.3.0", build_tools = ["gleam"], requirements = ["filepath", "gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "0A868DAC6063D9E983477981839810DC2E553285AB4588B87E3E9C96A7FB4CB4" },

     

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       ]

     

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       [requirements]

     

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       gleam_stdlib = { version = ">= 0.44.0 and < 2.0.0" }

     

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       gleeunit = { version = ">= 1.0.0 and < 2.0.0" }

     

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       simplifile = { version = ">= 2.3.0 and < 3.0.0" }

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2025/7/gleam/src/main.gleam

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       import gleam/dict

     

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       import gleam/int

     

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       import gleam/io

     

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       import gleam/list

     

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       import gleam/result

     

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       import gleam/set

     

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       import gleam/string

     

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       import simplifile as file

     

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       pub fn main() {

     

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         let assert Ok(input) = file.read(from: "../input.txt")

     

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           as "Input file not found"

     

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         let input = input |> string.trim |> string.split("\n")

     

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         let assert Ok(start) = input |> list.first

     

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         let start =

     

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           start

     

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           |> string.to_graphemes

     

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           |> list.index_fold(0, fn(acc, v, i) {

     

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             case v {

     

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               "S" -> i

     

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               _ -> acc

     

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             }

     

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           })

     

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         let splitters =

     

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           input

     

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           |> list.drop(1)

     

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           |> list.index_map(fn(line, i) {

     

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             case i % 2 {

     

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               0 -> ""

     

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               _ -> line

     

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             }

     

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           })

     

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           |> list.filter(fn(line) { line != "" })

     

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           |> list.map(fn(line) {

     

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             line

     

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             |> string.to_graphemes

     

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             |> list.index_fold(set.new(), fn(d, char, i) {

     

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               case char {

     

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                 "^" -> set.insert(d, i)

     

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                 _ -> d

     

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               }

     

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             })

     

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           })

     

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         let #(beams, times) =

     

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           echo splitters

     

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             |> list.fold(#(set.new() |> set.insert(start), 0), fn(acc, splitters) {

     

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               let #(beams, times) = acc

     

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               beams

     

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               |> set.fold(#(beams, times), fn(acc, beam) {

     

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                 let #(beams, times) = acc

     

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                 case splitters |> set.contains(beam) {

     

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                   False -> acc

     

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                   True -> {

     

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                     #(

     

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                       beams

     

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                         |> set.delete(beam)

     

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                         |> set.insert(beam - 1)

     

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                         |> set.insert(beam + 1),

     

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                       times + 1,

     

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                     )

     

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                   }

     

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                 }

     

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               })

     

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             })

     

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         echo set.size(beams)

     

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       }