commit 6838cea2280183a1166e688f16ef52afb0287523
parent 80ca5e4b07c78bdf0e8882db440a1e398fa6c361
Author: Natasha Kerensikova <natacha@instinctive.eu>
Date: Fri, 23 Dec 2022 13:14:12 +0100
Add day 22 reference input and solutions
Diffstat:
| A | day22.ps | | | 414 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | day22.txt | | | 14 | ++++++++++++++ |
2 files changed, 428 insertions(+), 0 deletions(-)
diff --git a/day22.ps b/day22.ps
@@ -0,0 +1,414 @@
+%!PS
+%
+% Copyright (c) 2022, Natacha Porté
+%
+% Permission to use, copy, modify, and distribute this software for any
+% purpose with or without fee is hereby granted, provided that the above
+% copyright notice and this permission notice appear in all copies.
+%
+% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+%
+% Usage:
+% gs -q- -sDEVICE=png16m -o- day22.ps <day22.txt | display
+
+/datafile (%stdin) (r) file def
+/stderr (%stderr) (w) file def
+
+/raw-map [
+ {
+ datafile 200 string readline
+ not { 1.125 pstack quit } if
+ % line
+ dup length 0 eq { exit } if
+ } loop
+] def
+
+/raw-path datafile 6000 string readline not { 2.125 pstack quit } if def
+
+/turn-left-mark -1 def
+/turn-right-mark -2 def
+
+/path [
+ 0 raw-path {
+ % length-acc char
+ dup dup 48 ge exch 57 le and
+ { % length-acc digit-char
+ 48 sub
+ % length-acc digit
+ exch 10 mul add
+ % next-length-acc
+ -10
+ } if
+ % length-acc char
+ dup 76 eq
+ { % length-acc 'L'
+ pop turn-left-mark 0
+ % length turn next-lenght-acc
+ -10
+ } if
+ % length-acc char
+ dup 82 eq
+ { % length-acc 'R'
+ pop turn-right-mark 0
+ % length turn next-lenght-acc
+ -10
+ } if
+ % length-acc char
+ 0 ge { 3.125 pstack quit } if
+ % length-acc
+ } forall
+ % length-acc
+ dup 0 eq { pop } if
+] def
+
+% x y -> char
+/getxy {
+ { %%% 1-iteration loop to use `exit` as a short circuit
+ % x y
+ 2 copy 0 lt exch 0 lt or { pop pop 32 exit } if
+ % x y
+ dup raw-map length ge { pop pop 32 exit } if
+ % x y
+ raw-map exch get
+ % x line
+ 2 copy length ge { pop pop 32 exit } if
+ % x line
+ exch get
+ exit
+ } loop
+} bind def
+
+/dir-vect <<
+ 0 [ 1 0]
+ 1 [ 0 1]
+ 2 [-1 0]
+ 3 [ 0 -1]
+>> def
+
+/origxy-proc <<
+ 0 { exch pop 0 exch }
+ 1 { pop 0 }
+ 2 { exch pop raw-map 1 index get length 1 sub exch }
+ 3 { pop raw-map length 1 sub }
+>> def
+
+% x y dir -> x y
+/origxy {
+ % x y dir
+ dup 4 1 roll
+ % dir x y dir
+ origxy-proc exch get exec
+ % dir start-x start-y
+ 3 2 roll dir-vect exch get aload pop 4 2 roll
+ % dx dy start-x start-y
+ {
+ % dx dy cur-x cur-y
+ 2 copy getxy
+ % dx dy cur-x cur-y cur-char
+ 32 eq not { exit } if
+ % dx dy cur-x cur-y
+ exch 3 index add exch 2 index add
+ % dx dy next-x next-y
+ } loop
+ % dx dy x y
+ 4 2 roll pop pop
+ % x y
+} bind def
+
+% prev-x prev-y dir -> x y dir
+/one-step-1 {
+ % prev-x prev-y dir
+ dir-vect 1 index get aload pop
+ % prev-x prev-y dir dx dy
+ exch 4 index add exch 3 index add
+ % prev-x prev-y dir new-x new-y
+ 2 copy getxy
+ % prev-x prev-y dir new-x new-y new-char
+ dup 32 eq
+ { % prev-x prev-y dir invalid-new-x invalid-new-y new-char
+ pop 2 index
+ % prev-x prev-y dir invalid-new-x invalid-new-y dir
+ origxy
+ % prev-x prev-y dir new-x new-y
+ 2 copy getxy
+ % prev-x prev-y dir new-x new-y new-char
+ dup 32 eq { 4.125 pstack quit } if
+ % prev-x prev-y dir new-x new-y new-char
+ } if
+ % prev-x prev-y dir new-x new-y new-char
+ dup 46 eq
+ { % prev-x prev-y dir new-x new-y '.'
+ pop 5 3 roll pop pop 3 2 roll
+ % new-x new-y dir
+ }
+ { % prev-x prev-y dir new-x new-y new-char
+ dup 35 eq
+ { % prev-x prev-y dir new-x new-y '#'
+ pop pop pop
+ % prev-x prev-y dir
+ }
+ { 5.125 pstack quit }
+ ifelse
+ % x y dir
+ }
+ ifelse
+ % x y dir
+} bind def
+
+/cube-size raw-map length 3 idiv def
+
+% invalid-x invalid-y old-dir -> x y dir
+%%% edges: A 1 B y directions: 3
+%%% ...# 0 2 . 0
+%%% -7 .#.. 2 1
+%%% #...
+%%% B -1A 7C....D
+%%% ...#.......# 4
+%%%-4 ........#... 3
+%%% ..#....#....
+%%% ..........#.F-3 D
+%%% H -6G-5 E...#.... 8
+%%% 5 .....#.. -2
+%%% .#......
+%%% ......#.
+%%% G 6 H4 B 12
+%%% x 0 4 8 12 16 ^
+%%%
+%%% warp items:
+%%% - trigger-min-x
+%%% - trigger-min-y
+%%% - trigger-max-x
+%%% - trigger-max-y
+%%% - trigger-direction
+%%% - image-of-min-x
+%%% - image-of-min-y
+%%% - image-dx
+%%% - image-dy
+%%% - image-direction
+
+/warp-data [
+% tx-ty-tx+ty+td x y dx dy d
+ [ 8 0 11 0 3 3 4 -1 0 1] % edge 1
+ [11 0 11 3 0 15 11 0 -1 2] % edge 2
+ [11 4 11 7 0 15 8 -1 0 1] % edge 3
+ [12 11 15 11 1 0 7 0 -1 0] % edge 4
+ [ 8 8 8 11 2 7 7 -1 0 3] % edge 5
+ [ 8 11 11 11 1 3 7 -1 0 3] % edge 6
+ [ 4 4 7 4 3 8 0 0 1 0] % edge 7
+ [ 0 4 3 4 3 11 0 -1 0 1] % edge -1
+ [15 8 15 11 0 11 3 0 -1 2] % edge -2
+ [12 8 15 8 3 11 7 0 -1 2] % edge -3
+ [ 0 4 0 7 2 15 11 -1 0 3] % edge -4
+ [ 4 7 7 7 1 8 11 0 -1 0] % edge -5
+ [ 0 7 3 7 1 11 11 -1 0 3] % edge -6
+ [ 8 0 8 3 2 4 4 1 0 1] % edge -7
+] def
+
+%%% my data:
+%%% 1 2
+%%% B B B A A A
+%%% -6 B B B A A A 3
+%%% B B B A A A
+%%% C C C 4
+%%% -7 C C C -4
+%%% 7 C C C
+%%% E E E D D D
+%%% 6 E E E D D D -3
+%%% E E E D D D
+%%% F F F 5
+%%% -1 F F F-5
+%%% F F F
+%%% -2
+
+/my-warp-data [
+% tx- ty- tx+ ty+d x y dx dy d
+ [ 50 0 99 0 3 0 150 0 1 0] % edge 1
+ [100 0 149 0 3 0 199 1 0 3] % edge 2
+ [149 0 149 49 0 99 149 0 -1 2] % edge 3
+ [100 49 149 49 1 99 50 0 1 2] % edge 4
+ [ 99 50 99 99 0 100 49 1 0 3] % edge -4
+ [ 99 100 99 149 0 149 49 0 -1 2] % edge -3
+ [ 50 149 99 149 1 49 150 0 1 2] % edge 5
+ [ 49 150 49 199 0 50 149 1 0 3] % edge -5
+ [ 0 199 49 199 1 100 0 1 0 1] % edge -2
+ [ 0 150 0 199 2 50 0 1 0 1] % edge -1
+ [ 0 100 0 149 2 50 49 0 -1 0] % edge 6
+ [ 0 100 49 100 3 50 50 0 1 0] % edge 7
+ [ 50 50 50 99 2 0 100 1 0 1] % edge -7
+ [ 50 0 50 49 2 0 149 0 -1 0] % edge -6
+] def
+
+% prev-x prev-y prev-dir -> x y dir
+/warpxy {
+ false
+ % prev-x prev-y prev-dir found?
+ warp-data {
+ true
+ % prev-x prev-y prev-dir prev-found? warpdata match?
+ 5 index 2 index 0 get ge and % prev-x ≥ tx-
+ 4 index 2 index 1 get ge and % prev-x ≤ tx+
+ 5 index 2 index 2 get le and % prev-y ≥ ty-
+ 4 index 2 index 3 get le and % prev-y ≤ ty+
+ 3 index 2 index 4 get eq and % prev-dir = td
+ % prev-x prev-y prev-dir prev-found? warpdata match?
+ { % prev-x prev-y prev-dir prev-found? warpdata
+ exch pop true exch
+ % prev-x prev-y prev-dir found? warpdata
+ 3 2 roll pop
+ % prev-x prev-y found? warpdata
+ 4 3 roll
+ % prev-y found? warpdata prev-x
+ 1 index 0 get sub
+ % prev-y found? warpdata delta-x
+ 4 3 roll 2 index 1 get sub
+ % found? warpdata delta-x delta-y
+ add
+ % found? warpdata delta
+ 1 index 7 get 1 index mul
+ % found? warpdata delta dx
+ exch 2 index 8 get mul
+ % found? warpdata dx dy
+ exch 2 index 5 get add exch 2 index 6 get add
+ % found? warpdata x y
+ 3 2 roll 9 get
+ % found? x y dir
+ 4 3 roll
+ % x y dir found?
+ exit
+ } if
+ pop
+ } forall
+ % x y dir found?
+ not { 8.125 pstack quit } if
+} bind def
+
+/dump-char [ 62 118 60 94 ] def
+/dump-2 [ raw-map { dup length string copy } forall ] def
+
+% prev-x prev-y dir -> x y dir
+/one-step-2 {
+ % prev-x prev-y dir
+ dir-vect 1 index get aload pop
+ % prev-x prev-y dir dx dy
+ exch 4 index add exch 3 index add
+ % prev-x prev-y dir new-x new-y
+ 2 copy getxy
+ % prev-x prev-y dir new-x new-y new-char
+ dup 32 eq
+ { % prev-x prev-y dir invalid-new-x invalid-new-y new-char
+ pop pop pop 3 copy
+ % prev-x prev-y dir prev-x prev-y prev-dir
+ warpxy
+ % prev-x prev-y dir new-x new-y new-dir
+ 3 copy pop getxy
+ % prev-x prev-y dir new-x new-y new-dir new-char
+ dup 32 eq { 6.125 pstack quit } if
+ % prev-x prev-y dir new-x new-y new-dir new-char
+ }
+ { 3 index exch }
+ ifelse
+ % prev-x prev-y dir new-x new-y new-dir new-char
+ dup 46 eq
+ { % prev-x prev-y dir new-x new-y new-dir '.'
+ pop 6 3 roll pop pop pop
+ % new-x new-y new-dir
+ }
+ { % prev-x prev-y dir new-x new-y new-dir new-char
+ dup 35 eq
+ { % prev-x prev-y dir new-x new-y new-dir '#'
+ pop pop pop pop
+ % prev-x prev-y dir
+ }
+ { 7.125 pstack quit }
+ ifelse
+ % x y dir
+ }
+ ifelse
+ % x y dir
+ dump-2 2 index get
+ % x y dir dump-line
+ 3 index
+ % x y dir dump-line x
+ dump-char 3 index get
+ % x y dir dump-line x dump-char
+ put
+ % x y dir
+} bind def
+
+
+
+/Helvetica 20 selectfont
+
+
+(First Puzzle: )
+72 700 moveto show
+
+0 0 {
+ % x y
+ 2 copy getxy
+ % x y char
+ 46 eq { exit } if
+ % x y
+ exch 1 add exch
+ % next-x y
+} loop
+% start-x start-y
+0
+% start-x start-y start-dir
+path {
+ % x y dir instruction
+ dup turn-left-mark eq { exch 3 add 4 mod exch } if
+ dup turn-right-mark eq { exch 1 add 4 mod exch } if
+ % x y dir instruction
+ dup 0 gt { { one-step-1 } repeat } { pop } ifelse
+ % x y dir
+} forall
+% x y dir
+exch 1000 mul add exch 4 mul add 1004 add
+% result
+15 string cvs show
+
+
+(Second Puzzle: )
+72 664 moveto show
+
+0 0 {
+ % x y
+ 2 copy getxy
+ % x y char
+ 46 eq { exit } if
+ % x y
+ exch 1 add exch
+ % next-x y
+} loop
+% start-x start-y
+0
+% start-x start-y start-dir
+path {
+ % x y dir instruction
+ dup turn-left-mark eq { exch 3 add 4 mod exch } if
+ dup turn-right-mark eq { exch 1 add 4 mod exch } if
+ % x y dir instruction
+ dup 0 gt { { one-step-2 } repeat } { pop } ifelse
+ % x y dir
+} forall
+% x y dir
+exch 1000 mul add exch 4 mul add 1004 add
+% result
+15 string cvs show
+
+%%% dump-2 {
+%%% stderr exch writestring
+%%% stderr 10 write
+%%% } forall
+
+
+showpage
+quit
+
diff --git a/day22.txt b/day22.txt
@@ -0,0 +1,14 @@
+ ...#
+ .#..
+ #...
+ ....
+...#.......#
+........#...
+..#....#....
+..........#.
+ ...#....
+ .....#..
+ .#......
+ ......#.
+
+10R5L5R10L4R5L5
