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|
import gleam/io
import gleam/set
import gleam/list
import ext/setx
import ext/resultx as resx
import util/input_util
import util/parser as p
import util/hex.{type Hex}
fn parse_tiles(lines: List(String)) -> List(Hex) {
let tile_parser =
[
p.replace(p.literal("e"), with: hex.e),
p.replace(p.literal("se"), with: hex.se),
p.replace(p.literal("sw"), with: hex.sw),
p.replace(p.literal("w"), with: hex.w),
p.replace(p.literal("nw"), with: hex.nw),
p.replace(p.literal("ne"), with: hex.ne),
]
|> p.any
|> p.many1
|> p.map(with: list.fold(over: _, from: hex.zero, with: hex.add))
list.map(lines, with: fn(line) {
line
|> p.parse_entire(with: tile_parser)
|> resx.assert_unwrap
})
}
fn part1(lines: List(String)) -> Int {
let tiles = parse_tiles(lines)
let blacks = list.fold(over: tiles, from: set.new(), with: setx.toggle)
set.size(blacks)
}
fn part2(lines: List(String)) -> Nil {
Nil
}
pub fn main() -> Nil {
let testing = input_util.read_lines("test24")
let assert 10 = part1(testing)
io.debug(part2(testing))
let input = input_util.read_lines("day24")
io.debug(part1(input))
io.debug(part2(input))
Nil
}
|
