aylac.top
+20
2025/4/gleam/gleam.toml
+20
2025/4/gleam/gleam.toml
···
1
+
name = "main"
2
+
version = "1.0.0"
3
+
4
+
# Fill out these fields if you intend to generate HTML documentation or publish
5
+
# your project to the Hex package manager.
6
+
#
7
+
# description = ""
8
+
# licences = ["Apache-2.0"]
9
+
# repository = { type = "github", user = "", repo = "" }
10
+
# links = [{ title = "Website", href = "" }]
11
+
#
12
+
# For a full reference of all the available options, you can have a look at
13
+
# https://gleam.run/writing-gleam/gleam-toml/.
14
+
15
+
[dependencies]
16
+
gleam_stdlib = ">= 0.44.0 and < 2.0.0"
17
+
simplifile = ">= 2.3.0 and < 3.0.0"
18
+
19
+
[dev-dependencies]
20
+
gleeunit = ">= 1.0.0 and < 2.0.0"
+14
2025/4/gleam/manifest.toml
+14
2025/4/gleam/manifest.toml
···
1
+
# This file was generated by Gleam
2
+
# You typically do not need to edit this file
3
+
4
+
packages = [
5
+
{ name = "filepath", version = "1.1.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "filepath", source = "hex", outer_checksum = "B06A9AF0BF10E51401D64B98E4B627F1D2E48C154967DA7AF4D0914780A6D40A" },
6
+
{ name = "gleam_stdlib", version = "0.65.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "7C69C71D8C493AE11A5184828A77110EB05A7786EBF8B25B36A72F879C3EE107" },
7
+
{ name = "gleeunit", version = "1.7.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "CD701726CBCE5588B375D157B4391CFD0F2F134CD12D9B6998A395484DE05C58" },
8
+
{ name = "simplifile", version = "2.3.0", build_tools = ["gleam"], requirements = ["filepath", "gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "0A868DAC6063D9E983477981839810DC2E553285AB4588B87E3E9C96A7FB4CB4" },
9
+
]
10
+
11
+
[requirements]
12
+
gleam_stdlib = { version = ">= 0.44.0 and < 2.0.0" }
13
+
gleeunit = { version = ">= 1.0.0 and < 2.0.0" }
14
+
simplifile = { version = ">= 2.3.0 and < 3.0.0" }
+60
2025/4/gleam/src/main.gleam
+60
2025/4/gleam/src/main.gleam
···
1
+
import gleam/bit_array
2
+
import gleam/int
3
+
import gleam/io
4
+
import gleam/list
5
+
import gleam/result
6
+
import gleam/string
7
+
import simplifile as file
8
+
9
+
fn solve(input, size) {
10
+
let get_place = fn(x, y) {
11
+
case
12
+
case x, y {
13
+
_, -1 | -1, _ -> <<>>
14
+
s, _ | _, s if s == size -> <<>>
15
+
16
+
_, _ -> bit_array.slice(input, y * size + x, 1) |> result.unwrap(<<>>)
17
+
}
18
+
{
19
+
<<"@">> -> 1
20
+
_ -> 0
21
+
}
22
+
}
23
+
24
+
list.range(0, bit_array.byte_size(input) - 1)
25
+
|> list.fold(0, fn(acc, pos) {
26
+
let x = pos % size
27
+
let y = pos / size
28
+
29
+
let roll = get_place(x, y)
30
+
31
+
let neighbours =
32
+
get_place(x - 1, y - 1)
33
+
+ get_place(x, y - 1)
34
+
+ get_place(x + 1, y - 1)
35
+
+ get_place(x - 1, y)
36
+
+ get_place(x + 1, y)
37
+
+ get_place(x - 1, y + 1)
38
+
+ get_place(x, y + 1)
39
+
+ get_place(x + 1, y + 1)
40
+
41
+
case roll, neighbours < 4 {
42
+
1, True -> acc + 1
43
+
_, _ -> acc
44
+
}
45
+
})
46
+
}
47
+
48
+
pub fn main() {
49
+
let assert Ok(input) = file.read(from: "../input.txt")
50
+
as "Input file not found"
51
+
let input =
52
+
input |> string.trim |> string.split("\n") |> list.map(fn(v) { <<v:utf8>> })
53
+
let size = list.length(input)
54
+
let input = input |> list.fold(<<>>, fn(acc, l) { bit_array.append(acc, l) })
55
+
// @ and .
56
+
57
+
solve(input, size)
58
+
|> int.to_string
59
+
|> io.println
60
+
}