mscha

#!/usr/bin/env raku
use v6.d;
$*OUT.out-buffer = False;   # Autoflush

# Advent of Code 2024 day 19 -- https://adventofcode.com/2024/day/19

class TowelArranger
{
    has @.towels;
    has @.designs;

mscha

#!/usr/bin/env raku
use v6.d;
$*OUT.out-buffer = False;   # Autoflush

# Advent of Code 2024 day 15 -- https://adventofcode.com/2024/day/15

enum Direction <north east south west>;
sub left(Direction $d --> Direction) { Direction(($d - 1) % 4) }
sub right(Direction $d --> Direction) { Direction(($d + 1) % 4) }
sub turn(Direction $d --> Direction) { Direction(($d + 2) % 4) }

mscha

#!/usr/bin/env raku
use v6.d;
$*OUT.out-buffer = False;   # Autoflush

# Advent of Code 2024 day 14 -- https://adventofcode.com/2024/day/14

class Vector
{
    has Int $.x;
    has Int $.y;

mscha

#!/usr/bin/env raku
use v6.d;
$*OUT.out-buffer = False;   # Autoflush

# Advent of Code 2024 day 13 -- https://adventofcode.com/2024/day/13

sub button-presses($ax,$ay, $bx,$by, $px,$py)
{
    # We need to find (non-negative integer) m and n so that
    #     m × (ax,ay) + n × (bx,by) = (px,py)

mscha

#!/usr/bin/env raku
use v6.d;
$*OUT.out-buffer = False;   # Autoflush

# Advent of Code 2024 day 12 -- https://adventofcode.com/2024/day/12

enum Direction <north east south west>;
sub left(Direction $d --> Direction) { Direction(($d - 1) % 4) }
sub right(Direction $d --> Direction) { Direction(($d + 1) % 4) }
sub turn(Direction $d --> Direction) { Direction(($d + 2) % 4) }

mscha

#!/usr/bin/env raku
use v6.d;
$*OUT.out-buffer = False;   # Autoflush

# Advent of Code 2024 day 11 -- https://adventofcode.com/2024/day/11

sub split-in-half($n) { $n.comb(/\w ** { $n.chars div 2 }/)».Int }

use experimental :cached;
multi blink($stone, $times) is cached

mscha

#!/usr/bin/env raku
use v6.d;
$*OUT.out-buffer = False;   # Autoflush

# Advent of Code 2024 day 11 -- https://adventofcode.com/2024/day/11

class MagicStones
{
    has Int @.stones;

mscha

#!/usr/bin/env raku
use v6.d;
$*OUT.out-buffer = False;   # Autoflush

# Advent of Code 2024 day 10 -- https://adventofcode.com/2024/day/10

enum Direction <north east south west>;

class Position
{

mscha

#!/usr/bin/env raku
use v6.d;
$*OUT.out-buffer = False;   # Autoflush

# Advent of Code 2024 day 9 -- https://adventofcode.com/2024/day/9

class DiskMap
{
    has $.map;

mscha

#!/usr/bin/env raku
use v6.d;
$*OUT.out-buffer = False;   # Autoflush

# Advent of Code 2024 day 8 -- https://adventofcode.com/2024/day/8

class Position
{
    has Int $.x;
    has Int $.y;