commit a36e639c190837d9fc97b08641ecb0a3674773a6
parent bd47b0846245f36e70b84dd0c3a98b37f3bd9e10
Author: Natasha Kerensikova <natacha@instinctive.eu>
Date: Sun, 18 Dec 2022 11:57:54 +0100
Add day 18 reference input and solutions
Diffstat:
| A | day18.ps | | | 316 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | day18.txt | | | 13 | +++++++++++++ |
2 files changed, 329 insertions(+), 0 deletions(-)
diff --git a/day18.ps b/day18.ps
@@ -0,0 +1,316 @@
+%!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- day18.ps <day18.txt | display
+
+% [ item_1 ... item_n ] item_0 -> [ item_0 item_1 ... item_n ]
+/apush {
+ % array new_item
+ exch aload length 1 add array astore
+} bind def
+
+/datafile (%stdin) (r) file def
+/stderr (%stderr) (w) file def
+
+/data [
+ {
+ datafile 300 string readline
+ not { pop exit } if
+ % (X,Y,Z)
+ (,) search
+ not { 1.125 pstack quit } if
+ % (Y,Z) (,) (X)
+ cvi exch pop exch
+ % X (Y,Z)
+ (,) search
+ not { 2.125 pstack quit } if
+ % X (Z) (,) (Y)
+ cvi exch pop exch cvi
+ % X Y Z
+ 3 array astore
+ % [X Y Z]
+ } loop
+] def
+
+data 0 get aload pop 3 copy
+data {
+ aload pop
+ % prev-min-x prev-min-y prev-min-z prev-max-x prev-max-y prev-max-z x y z
+ 9 8 roll 3 index
+ % prev-min-y prev-min-z prev-max-x prev-max-y prev-max-z x y z prev-min-x x
+ 2 copy gt { exch } if pop
+ % prev-min-y prev-min-z prev-max-x prev-max-y prev-max-z x y z min-x
+ 9 8 roll 3 index
+ % prev-min-z prev-max-x prev-max-y prev-max-z x y z min-x prev-min-y y
+ 2 copy gt { exch } if pop
+ % prev-min-z prev-max-x prev-max-y prev-max-z x y z min-x min-y
+ 9 8 roll 3 index
+ % prev-max-x prev-max-y prev-max-z x y z min-x min-y prev-min-z z
+ 2 copy gt { exch } if pop
+ % prev-max-x prev-max-y prev-max-z x y z min-x min-y min-z
+ 9 8 roll 6 index
+ % prev-max-y prev-max-z x y z min-x min-y min-z prev-max-x x
+ 2 copy lt { exch } if pop
+ % prev-max-y prev-max-z x y z min-x min-y min-z max-x
+ 9 8 roll 6 index
+ % prev-max-z x y z min-x min-y min-z max-x prev-max-y y
+ 2 copy lt { exch } if pop
+ % prev-max-z x y z min-x min-y min-z max-x max-y
+ 9 8 roll 6 index
+ % x y z min-x min-y min-z max-x max-y prev-max-z z
+ 2 copy lt { exch } if pop
+ % x y z min-x min-y min-z max-x max-y max-z
+ 9 6 roll pop pop pop
+ % min-x min-y min-z max-x max-y max-z
+} forall
+% min-x min-y min-z max-x max-y max-z
+/max-z exch 1 add def
+/max-y exch 1 add def
+/max-x exch 1 add def
+/min-z exch 1 sub def
+/min-y exch 1 sub def
+/min-x exch 1 sub def
+
+/x-width max-x min-x sub 1 add def
+/y-width max-y min-y sub 1 add def
+/z-width max-z min-z sub 1 add def
+
+% x y z -> index
+/xyz-index {
+ min-z sub
+ y-width mul
+ add min-y sub
+ x-width mul
+ add min-x sub
+} bind def
+
+% index -> x y z
+/split-index {
+ % index
+ dup x-width mod min-x add
+ % index x
+ exch x-width idiv
+ % x yz-part
+ dup y-width mod min-y add
+ % x yz-part y
+ exch y-width idiv
+ % x y z-part
+ min-z add
+ % x y z
+} bind def
+
+% [x y z] -> index
+/arr-index {
+ dup length 3 eq not { 3.125 pstack quit } if
+ aload pop
+ xyz-index
+} bind def
+
+/data-dict <<
+ data { arr-index 1 } forall
+>> def
+
+% x y z -> bool
+/xyz-in-bounds {
+ true
+ % x y z true
+ 1 index min-z ge and
+ 1 index max-z le and
+ % x y z z-ok?
+ 2 index min-y ge and
+ 2 index max-y le and
+ % x y z y-and-z-ok?
+ 3 index min-x ge and
+ 3 index max-x le and
+ % x y z all-ok?
+ 4 1 roll pop pop pop
+} bind def
+
+% x y z -> bool
+/xyz-known {
+ % x y z
+ 3 copy xyz-in-bounds
+ { xyz-index data-dict exch known }
+ { pop pop pop false }
+ ifelse
+} bind def
+
+% x y z dx dy dz -> x+dx y+dy x+dz
+/xyz-add {
+ % x y z dx dy dz
+ 4 3 roll add
+ % x y dx dy z+dz
+ 5 1 roll
+ % z+dz x y dx dy
+ 3 2 roll add
+ % z+dz x dx y+dy
+ 4 1 roll
+ % y+dy z+dz x dx
+ add 3 1 roll
+ % x+dx y+dy z+dz
+} bind def
+
+
+/Helvetica 20 selectfont
+
+
+(First Puzzle: )
+72 700 moveto show
+
+0 data {
+ % acc [x y z]
+ aload pop
+ % acc x y z
+ 3 copy 1 0 0 xyz-add xyz-known not { 4 3 roll 1 add 4 1 roll } if
+ 3 copy -1 0 0 xyz-add xyz-known not { 4 3 roll 1 add 4 1 roll } if
+ 3 copy 0 1 0 xyz-add xyz-known not { 4 3 roll 1 add 4 1 roll } if
+ 3 copy 0 -1 0 xyz-add xyz-known not { 4 3 roll 1 add 4 1 roll } if
+ 3 copy 0 0 1 xyz-add xyz-known not { 4 3 roll 1 add 4 1 roll } if
+ 3 copy 0 0 -1 xyz-add xyz-known not { 4 3 roll 1 add 4 1 roll } if
+ % acc x y z
+ pop pop pop
+ % acc
+} forall
+% side-count
+15 string cvs show
+
+
+(Second Puzzle: )
+72 664 moveto show
+
+/exterior-dict x-width y-width z-width mul mul dict def
+min-x 1 max-x {
+ min-y 1 max-y {
+ % x y
+ 2 copy min-z xyz-index exterior-dict exch 1 put
+ 2 copy max-z xyz-index exterior-dict exch 1 put
+ % x y
+ pop
+ % x
+ } for
+ % x
+ pop
+} for
+min-x 1 max-x {
+ min-z 1 max-y {
+ % x y
+ 2 copy min-y exch xyz-index exterior-dict exch 1 put
+ 2 copy max-y exch xyz-index exterior-dict exch 1 put
+ % x y
+ pop
+ % x
+ } for
+ % x
+ pop
+} for
+min-y 1 max-y {
+ min-z 1 max-z {
+ % y z
+ 2 copy min-x 3 1 roll xyz-index exterior-dict exch 1 put
+ 2 copy max-x 3 1 roll xyz-index exterior-dict exch 1 put
+ % y z
+ pop
+ % y
+ } for
+ % y
+ pop
+} for
+
+
+/boundary-dict data length dict def
+
+% next-todo x y z -> updated-next-todo
+/update-dicts {
+ % next-todo x y z
+ 3 copy xyz-in-bounds
+ { % next-todo x y z
+ xyz-index
+ % next-todo index
+ data-dict 1 index known
+ % next-todo index is-rock?
+ { boundary-dict 1 index 1 put }
+ { exterior-dict 1 index known
+ % next-todo index is-known?
+ not {
+ % next-todo index
+ exterior-dict 1 index 1 put
+ % next-todo index
+ exch 1 index apush exch
+ % updated-next-todo index
+ } if
+ % next-todo index
+ }
+ ifelse
+ % next-todo index
+ pop
+ }
+ { pop pop pop }
+ ifelse
+} bind def
+
+[ exterior-dict { pop } forall ]
+% inital-todo-list
+{
+ % todo-list
+ dup length 0 eq { exit } if
+ % todo-list
+ [] exch
+ % next-todo todo-list
+ {
+ % next-todo cur-key
+ split-index
+ % next-todo x y z
+ 4 3 roll
+ % x y z next-todo
+ 4 copy pop 1 0 0 xyz-add update-dicts
+ 4 copy pop -1 0 0 xyz-add update-dicts
+ 4 copy pop 0 1 0 xyz-add update-dicts
+ 4 copy pop 0 -1 0 xyz-add update-dicts
+ 4 copy pop 0 0 1 xyz-add update-dicts
+ 4 copy pop 0 0 -1 xyz-add update-dicts
+ % x y z next-todo
+ 4 1 roll pop pop pop
+ % next-todo
+ } forall
+ % next-todo
+} loop
+
+% x y z -> bool
+/xyz-is-ext {
+ xyz-index exterior-dict exch known
+} bind def
+
+0 data {
+ % acc [x y z]
+ aload pop
+ % acc x y z
+ 3 copy 1 0 0 xyz-add xyz-is-ext { 4 3 roll 1 add 4 1 roll } if
+ 3 copy -1 0 0 xyz-add xyz-is-ext { 4 3 roll 1 add 4 1 roll } if
+ 3 copy 0 1 0 xyz-add xyz-is-ext { 4 3 roll 1 add 4 1 roll } if
+ 3 copy 0 -1 0 xyz-add xyz-is-ext { 4 3 roll 1 add 4 1 roll } if
+ 3 copy 0 0 1 xyz-add xyz-is-ext { 4 3 roll 1 add 4 1 roll } if
+ 3 copy 0 0 -1 xyz-add xyz-is-ext { 4 3 roll 1 add 4 1 roll } if
+ % acc x y z
+ pop pop pop
+ % acc
+} forall
+% side-count
+15 string cvs show
+
+
+showpage
+quit
diff --git a/day18.txt b/day18.txt
@@ -0,0 +1,13 @@
+2,2,2
+1,2,2
+3,2,2
+2,1,2
+2,3,2
+2,2,1
+2,2,3
+2,2,4
+2,2,6
+1,2,5
+3,2,5
+2,1,5
+2,3,5
