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No commits in common. "main" and "2024/rust" have entirely different histories.

58 changed files with 4356 additions and 151778 deletions

2
.envrc Normal file
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dotenv
use flake

7
.gitignore vendored
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node_modules/ /target
yarn-*.cjs /result
/result-lib
.direnv
.env

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{
"folders": [
{
"path": "."
}
],
"settings": {}
}

1469
Cargo.lock generated Normal file

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53
Cargo.toml Normal file
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[package]
authors = ["Toby <toby@tobot.dev>"]
name = "advent-of-code-2024"
version = "24.4.2"
edition = "2021"
default-run = "get_input"
[profile.release]
strip = "symbols"
lto = true
opt-level = 3
codegen-units = 1
[profile.dev.package."*"]
opt-level = 3
codegen-units = 1
[profile.release.package."*"]
opt-level = 3
codegen-units = 1
[profile.release.build-override]
codegen-units = 1
[[bin]]
name = "get_input"
path = "src/get_input.rs"
test = false
[[bin]]
name = "template"
# day00 for alphabetic sorting
path = "day00/main.rs"
test = false
[[bin]]
name = "day01"
path = "day01/main.rs"
[[bin]]
name = "day02"
path = "day02/main.rs"
[[bin]]
name = "day03"
path = "day03/main.rs"
[[bin]]
name = "day04"
path = "day04/main.rs"
[dependencies]
regex-lite = "0.1.6"
reqwest = { version = "0.12.9", features = ["blocking"] }

21
LICENSE Normal file
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MIT License
Copyright (c) 2024 Tobias Berger
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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{
"metadata": {
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.8.6-final"
},
"orig_nbformat": 2,
"kernelspec": {
"name": "python3",
"display_name": "Python 3.8.6 64-bit",
"metadata": {
"interpreter": {
"hash": "1ddf53fa84779e14f0db18342168679c9c165a81c5f324dac828befab228d68d"
}
}
}
},
"nbformat": 4,
"nbformat_minor": 2,
"cells": [
{
"cell_type": "code",
"execution_count": 10,
"metadata": {},
"outputs": [],
"source": [
"# Get puzzle input from input file\n",
"\n",
"puzzle_input = open(\"input\").read()"
]
},
{
"source": [
"# Part 1 #"
],
"cell_type": "markdown",
"metadata": {}
},
{
"cell_type": "code",
"execution_count": 11,
"metadata": {},
"outputs": [],
"source": [
"ups = puzzle_input.count(\"(\")\n",
"downs = puzzle_input.count(\")\")"
]
},
{
"cell_type": "code",
"execution_count": 12,
"metadata": {},
"outputs": [],
"source": [
"end_floor = ups - downs"
]
},
{
"source": [
"print(end_floor)"
],
"cell_type": "code",
"metadata": {},
"execution_count": 13,
"outputs": [
{
"output_type": "stream",
"name": "stdout",
"text": [
"138\n"
]
}
]
},
{
"source": [
"# Part 2 #"
],
"cell_type": "markdown",
"metadata": {}
},
{
"cell_type": "code",
"execution_count": 14,
"metadata": {},
"outputs": [],
"source": [
"current_floor = 0"
]
},
{
"cell_type": "code",
"execution_count": 15,
"metadata": {},
"outputs": [],
"source": [
"index = 0\n",
"while current_floor >= 0 and index < len(puzzle_input):\n",
" if puzzle_input[index] == \"(\":\n",
" current_floor += 1\n",
" elif puzzle_input[index] == \")\":\n",
" current_floor -= 1\n",
" index += 1"
]
},
{
"cell_type": "code",
"execution_count": 16,
"metadata": {},
"outputs": [
{
"output_type": "stream",
"name": "stdout",
"text": [
"1771\n"
]
}
],
"source": [
"print(index)"
]
}
]
}

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{
"metadata": {
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.8.6-final"
},
"orig_nbformat": 2,
"kernelspec": {
"name": "python3",
"display_name": "Python 3.8.6 64-bit",
"metadata": {
"interpreter": {
"hash": "1ddf53fa84779e14f0db18342168679c9c165a81c5f324dac828befab228d68d"
}
}
}
},
"nbformat": 4,
"nbformat_minor": 2,
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
"# Get puzzle input from input file\n",
"\n",
"puzzle_input = open(\"input\").read().split(\"\\n\")"
]
},
{
"source": [
"# Part 1 #"
],
"cell_type": "markdown",
"metadata": {}
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {},
"outputs": [
{
"output_type": "stream",
"name": "stdout",
"text": [
"1606483\n"
]
}
],
"source": [
"wrapping_paper = 0\n",
"for packet in puzzle_input:\n",
" l, w, h = map(lambda val: int(val), packet.split(\"x\"))\n",
" # the surface area of the box, which is 2*l*w + 2*w*h + 2*h*l\n",
" sides = [l*w*2, w*h*2, l*h*2]\n",
" # extra paper for each present: the area of the smallest side.\n",
" wrapping_paper += sum(sides) + int(min(sides)/2)\n",
"print(wrapping_paper)"
]
},
{
"source": [
"# Part 2 #"
],
"cell_type": "markdown",
"metadata": {}
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {},
"outputs": [
{
"output_type": "stream",
"name": "stdout",
"text": [
"3842356\n"
]
}
],
"source": [
"ribbon = 0\n",
"for packet in puzzle_input:\n",
" l, w, h = map(lambda val: int(val), packet.split(\"x\"))\n",
" # the feet of ribbon required for the perfect bow is equal to the cubic feet of volume of the present\n",
" ribbon += l*w*h\n",
" # The ribbon required to wrap a present is the shortest distance around its sides, or the smallest perimeter of any one face\n",
" x, y = sorted([l, w, h])[0:2]\n",
" ribbon += 2*x + 2*y\n",
"print(ribbon)"
]
}
]
}

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{
"metadata": {
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.8.6-final"
},
"orig_nbformat": 2,
"kernelspec": {
"name": "python3",
"display_name": "Python 3.8.6 64-bit",
"metadata": {
"interpreter": {
"hash": "1ddf53fa84779e14f0db18342168679c9c165a81c5f324dac828befab228d68d"
}
}
}
},
"nbformat": 4,
"nbformat_minor": 2,
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
"# Get puzzle input from input file\n",
"\n",
"puzzle_input = open(\"input\").read()"
]
},
{
"source": [
"# Part 1 #"
],
"cell_type": "markdown",
"metadata": {}
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {},
"outputs": [
{
"output_type": "stream",
"name": "stdout",
"text": [
"2572\n"
]
}
],
"source": [
"delivered = {(0,0)}\n",
"\n",
"x, y = 0, 0\n",
"ops = {\n",
" \"^\": [+0, +1],\n",
" \"v\": [-0, -1],\n",
" \"<\": [-1, -0],\n",
" \">\": [+1, +0]\n",
"}\n",
"for char in puzzle_input:\n",
" dx, dy = ops[char]\n",
" x += dx\n",
" y += dy\n",
" delivered.add((x, y))\n",
"print(len(delivered))"
]
},
{
"source": [
"# Part 2 #"
],
"cell_type": "markdown",
"metadata": {}
},
{
"cell_type": "code",
"execution_count": 4,
"metadata": {},
"outputs": [
{
"output_type": "stream",
"name": "stdout",
"text": [
"2631\n"
]
}
],
"source": [
"delivered = {(0,0)}\n",
"\n",
"santa = (0, 0)\n",
"robo_santa = (0, 0)\n",
"ops = {\n",
" \"^\": [+0, +1],\n",
" \"v\": [-0, -1],\n",
" \"<\": [-1, -0],\n",
" \">\": [+1, +0]\n",
"}\n",
"robot = False\n",
"for char in puzzle_input:\n",
" dx, dy = ops[char]\n",
" if robot:\n",
" robo_santa = (robo_santa[0]+dx, robo_santa[1]+dy)\n",
" delivered.add(robo_santa)\n",
" else:\n",
" santa = (santa[0]+dx, santa[1]+dy)\n",
" delivered.add(santa)\n",
" robot = not robot\n",
"print(len(delivered))"
]
}
]
}

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yzbqklnj

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{
"metadata": {
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.8.6-final"
},
"orig_nbformat": 2,
"kernelspec": {
"name": "python3",
"display_name": "Python 3.8.6 64-bit",
"metadata": {
"interpreter": {
"hash": "1ddf53fa84779e14f0db18342168679c9c165a81c5f324dac828befab228d68d"
}
}
}
},
"nbformat": 4,
"nbformat_minor": 2,
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
"import hashlib"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {},
"outputs": [],
"source": [
"# Get puzzle input from input file\n",
"\n",
"puzzle_input = open(\"input\").read()"
]
},
{
"source": [
"# Part 1 #"
],
"cell_type": "markdown",
"metadata": {}
},
{
"cell_type": "code",
"execution_count": 16,
"metadata": {
"tags": []
},
"outputs": [
{
"output_type": "stream",
"name": "stdout",
"text": [
"282749\n"
]
}
],
"source": [
"current_hash = \"\"\n",
"i = 0\n",
"while not current_hash[0:5] == \"00000\":\n",
" i += 1\n",
" md5 = hashlib.md5(f\"{puzzle_input}{i}\".encode(\"utf-8\"))\n",
" current_hash = md5.hexdigest()\n",
"print(i)"
]
},
{
"source": [
"# Part 2 #"
],
"cell_type": "markdown",
"metadata": {}
},
{
"cell_type": "code",
"execution_count": 17,
"metadata": {},
"outputs": [
{
"output_type": "stream",
"name": "stdout",
"text": [
"9962624\n"
]
}
],
"source": [
"current_hash = \"\"\n",
"i = 0\n",
"while not current_hash[0:6] == \"000000\":\n",
" i += 1\n",
" md5 = hashlib.md5(f\"{puzzle_input}{i}\".encode(\"utf-8\"))\n",
" current_hash = md5.hexdigest()\n",
"print(i)"
]
}
]
}

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{
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
"import re"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {},
"outputs": [],
"source": [
"# Get puzzle input from input file\n",
"\n",
"puzzle_input = open(\"input\").read().split(\"\\n\")"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Part 1 #"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {
"tags": []
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"238\n"
]
}
],
"source": [
"double_letter_test = re.compile(r\"(.)\\1\", re.IGNORECASE)\n",
"unnice_test = re.compile(r\"ab|cd|pq|xy\", re.IGNORECASE)\n",
"\n",
"def filter_function_part_one(line: str) -> bool:\n",
" return (sum(map(line.lower().count, \"aeiou\")) >= 3) and bool(not unnice_test.search(line)) and bool(double_letter_test.search(line))\n",
"\n",
"filtered_lines = list(filter(\n",
" filter_function_part_one,\n",
" puzzle_input\n",
"))\n",
"print(len(filtered_lines))"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Part 2 #"
]
},
{
"cell_type": "code",
"execution_count": 4,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"69\n"
]
}
],
"source": [
"def filter_function_part_two(line: str) -> bool:\n",
" return re.findall(r\"(..).*\\1\", line) and re.findall(r\"(.).\\1\", line)\n",
"\n",
"filtered_lines = filter(\n",
" filter_function_part_two,\n",
" puzzle_input\n",
")\n",
"print(len(list(filtered_lines)))"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.8.6"
}
},
"nbformat": 4,
"nbformat_minor": 4
}

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turn off 598,681 through 978,921
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toggle 441,215 through 528,680
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toggle 296,687 through 906,775

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@ -1,152 +0,0 @@
{
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
"import re"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {},
"outputs": [],
"source": [
"# Get puzzle input from input file\n",
"\n",
"puzzle_input = open(\"input\").read()"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {},
"outputs": [],
"source": [
"def toggle(val: bool) -> bool:\n",
" return not val\n",
"\n",
"def turn_off(val: bool) -> bool:\n",
" return False\n",
"\n",
"def turn_on(val: bool) -> bool:\n",
" return True"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Part 1 #"
]
},
{
"cell_type": "code",
"execution_count": 4,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"400410\n"
]
}
],
"source": [
"lights = [[False]*1000 for i in range(1000)]\n",
"for command in puzzle_input.split(\"\\n\"):\n",
" if re.search(\"toggle\", command):\n",
" method = toggle\n",
" elif re.search(\"on\", command):\n",
" method = turn_on\n",
" else:\n",
" method = turn_off\n",
" \n",
" points = re.search(r\"(\\d+,\\d+) through (\\d+,\\d+)\", command)\n",
" point_a = tuple(map(int, points.group(1).split(\",\")))\n",
" point_b = tuple(map(int, points.group(2).split(\",\")))\n",
" \n",
" for a in range(point_a[0], point_b[0]+1):\n",
" for b in range(point_a[1], point_b[1]+1):\n",
" lights[a][b] = method(lights[a][b])\n",
"\n",
"print(list(item for sublist in lights for item in sublist).count(True))"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Part 2 #"
]
},
{
"cell_type": "code",
"execution_count": 5,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"15343601\n"
]
}
],
"source": [
"def toggle(val: bool) -> bool:\n",
" return val+2\n",
"\n",
"def turn_off(val: bool) -> bool:\n",
" return max(val-1, 0)\n",
"\n",
"def turn_on(val: bool) -> bool:\n",
" return val+1\n",
"\n",
"lights = [[0]*1000 for i in range(1000)]\n",
"for command in puzzle_input.split(\"\\n\"):\n",
" if re.search(\"toggle\", command):\n",
" method = toggle\n",
" elif re.search(\"on\", command):\n",
" method = turn_on\n",
" else:\n",
" method = turn_off\n",
" \n",
" points = re.search(r\"(\\d+,\\d+) through (\\d+,\\d+)\", command)\n",
" point_a = tuple(map(int, points.group(1).split(\",\")))\n",
" point_b = tuple(map(int, points.group(2).split(\",\")))\n",
" \n",
" for a in range(point_a[0], point_b[0]+1):\n",
" for b in range(point_a[1], point_b[1]+1):\n",
" lights[a][b] = method(lights[a][b])\n",
"\n",
"print(sum(list(item for sublist in lights for item in sublist)))"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.8.6"
}
},
"nbformat": 4,
"nbformat_minor": 4
}

View file

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@ -1,55 +0,0 @@
{
"metadata": {
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.8.6-final"
},
"orig_nbformat": 2,
"kernelspec": {
"name": "python3",
"display_name": "Python 3.8.6 64-bit",
"metadata": {
"interpreter": {
"hash": "1ddf53fa84779e14f0db18342168679c9c165a81c5f324dac828befab228d68d"
}
}
}
},
"nbformat": 4,
"nbformat_minor": 2,
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
"# Get puzzle input from input file\n",
"\n",
"puzzle_input = open(\"input\").read()"
]
},
{
"source": [
"# Part 1 #"
],
"cell_type": "markdown",
"metadata": {}
},
{
"source": [
"# Part 2 #"
],
"cell_type": "markdown",
"metadata": {}
}
]
}

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@ -1,5 +0,0 @@
# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
# yarn lockfile v1
yarn-path ".yarn/releases/yarn-1.22.10.cjs"

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@ -1,339 +0,0 @@
bn RSHIFT 2 -> bo
lf RSHIFT 1 -> ly
fo RSHIFT 3 -> fq
cj OR cp -> cq
fo OR fz -> ga
t OR s -> u
lx -> a
NOT ax -> ay
he RSHIFT 2 -> hf
lf OR lq -> lr
lr AND lt -> lu
dy OR ej -> ek
1 AND cx -> cy
hb LSHIFT 1 -> hv
1 AND bh -> bi
ih AND ij -> ik
c LSHIFT 1 -> t
ea AND eb -> ed
km OR kn -> ko
NOT bw -> bx
ci OR ct -> cu
NOT p -> q
lw OR lv -> lx
NOT lo -> lp
fp OR fv -> fw
o AND q -> r
dh AND dj -> dk
ap LSHIFT 1 -> bj
bk LSHIFT 1 -> ce
NOT ii -> ij
gh OR gi -> gj
kk RSHIFT 1 -> ld
lc LSHIFT 1 -> lw
lb OR la -> lc
1 AND am -> an
gn AND gp -> gq
lf RSHIFT 3 -> lh
e OR f -> g
lg AND lm -> lo
ci RSHIFT 1 -> db
cf LSHIFT 1 -> cz
bn RSHIFT 1 -> cg
et AND fe -> fg
is OR it -> iu
kw AND ky -> kz
ck AND cl -> cn
bj OR bi -> bk
gj RSHIFT 1 -> hc
iu AND jf -> jh
NOT bs -> bt
kk OR kv -> kw
ks AND ku -> kv
hz OR ik -> il
b RSHIFT 1 -> v
iu RSHIFT 1 -> jn
fo RSHIFT 5 -> fr
be AND bg -> bh
ga AND gc -> gd
hf OR hl -> hm
ld OR le -> lf
as RSHIFT 5 -> av
fm OR fn -> fo
hm AND ho -> hp
lg OR lm -> ln
NOT kx -> ky
kk RSHIFT 3 -> km
ek AND em -> en
NOT ft -> fu
NOT jh -> ji
jn OR jo -> jp
gj AND gu -> gw
d AND j -> l
et RSHIFT 1 -> fm
jq OR jw -> jx
ep OR eo -> eq
lv LSHIFT 15 -> lz
NOT ey -> ez
jp RSHIFT 2 -> jq
eg AND ei -> ej
NOT dm -> dn
jp AND ka -> kc
as AND bd -> bf
fk OR fj -> fl
dw OR dx -> dy
lj AND ll -> lm
ec AND ee -> ef
fq AND fr -> ft
NOT kp -> kq
ki OR kj -> kk
cz OR cy -> da
as RSHIFT 3 -> au
an LSHIFT 15 -> ar
fj LSHIFT 15 -> fn
1 AND fi -> fj
he RSHIFT 1 -> hx
lf RSHIFT 2 -> lg
kf LSHIFT 15 -> kj
dz AND ef -> eh
ib OR ic -> id
lf RSHIFT 5 -> li
bp OR bq -> br
NOT gs -> gt
fo RSHIFT 1 -> gh
bz AND cb -> cc
ea OR eb -> ec
lf AND lq -> ls
NOT l -> m
hz RSHIFT 3 -> ib
NOT di -> dj
NOT lk -> ll
jp RSHIFT 3 -> jr
jp RSHIFT 5 -> js
NOT bf -> bg
s LSHIFT 15 -> w
eq LSHIFT 1 -> fk
jl OR jk -> jm
hz AND ik -> im
dz OR ef -> eg
1 AND gy -> gz
la LSHIFT 15 -> le
br AND bt -> bu
NOT cn -> co
v OR w -> x
d OR j -> k
1 AND gd -> ge
ia OR ig -> ih
NOT go -> gp
NOT ed -> ee
jq AND jw -> jy
et OR fe -> ff
aw AND ay -> az
ff AND fh -> fi
ir LSHIFT 1 -> jl
gg LSHIFT 1 -> ha
x RSHIFT 2 -> y
db OR dc -> dd
bl OR bm -> bn
ib AND ic -> ie
x RSHIFT 3 -> z
lh AND li -> lk
ce OR cd -> cf
NOT bb -> bc
hi AND hk -> hl
NOT gb -> gc
1 AND r -> s
fw AND fy -> fz
fb AND fd -> fe
1 AND en -> eo
z OR aa -> ab
bi LSHIFT 15 -> bm
hg OR hh -> hi
kh LSHIFT 1 -> lb
cg OR ch -> ci
1 AND kz -> la
gf OR ge -> gg
gj RSHIFT 2 -> gk
dd RSHIFT 2 -> de
NOT ls -> lt
lh OR li -> lj
jr OR js -> jt
au AND av -> ax
0 -> c
he AND hp -> hr
id AND if -> ig
et RSHIFT 5 -> ew
bp AND bq -> bs
e AND f -> h
ly OR lz -> ma
1 AND lu -> lv
NOT jd -> je
ha OR gz -> hb
dy RSHIFT 1 -> er
iu RSHIFT 2 -> iv
NOT hr -> hs
as RSHIFT 1 -> bl
kk RSHIFT 2 -> kl
b AND n -> p
ln AND lp -> lq
cj AND cp -> cr
dl AND dn -> do
ci RSHIFT 2 -> cj
as OR bd -> be
ge LSHIFT 15 -> gi
hz RSHIFT 5 -> ic
dv LSHIFT 1 -> ep
kl OR kr -> ks
gj OR gu -> gv
he RSHIFT 5 -> hh
NOT fg -> fh
hg AND hh -> hj
b OR n -> o
jk LSHIFT 15 -> jo
gz LSHIFT 15 -> hd
cy LSHIFT 15 -> dc
kk RSHIFT 5 -> kn
ci RSHIFT 3 -> ck
at OR az -> ba
iu RSHIFT 3 -> iw
ko AND kq -> kr
NOT eh -> ei
aq OR ar -> as
iy AND ja -> jb
dd RSHIFT 3 -> df
bn RSHIFT 3 -> bp
1 AND cc -> cd
at AND az -> bb
x OR ai -> aj
kk AND kv -> kx
ao OR an -> ap
dy RSHIFT 3 -> ea
x RSHIFT 1 -> aq
eu AND fa -> fc
kl AND kr -> kt
ia AND ig -> ii
df AND dg -> di
NOT fx -> fy
k AND m -> n
bn RSHIFT 5 -> bq
km AND kn -> kp
dt LSHIFT 15 -> dx
hz RSHIFT 2 -> ia
aj AND al -> am
cd LSHIFT 15 -> ch
hc OR hd -> he
he RSHIFT 3 -> hg
bn OR by -> bz
NOT kt -> ku
z AND aa -> ac
NOT ak -> al
cu AND cw -> cx
NOT ie -> if
dy RSHIFT 2 -> dz
ip LSHIFT 15 -> it
de OR dk -> dl
au OR av -> aw
jg AND ji -> jj
ci AND ct -> cv
dy RSHIFT 5 -> eb
hx OR hy -> hz
eu OR fa -> fb
gj RSHIFT 3 -> gl
fo AND fz -> gb
1 AND jj -> jk
jp OR ka -> kb
de AND dk -> dm
ex AND ez -> fa
df OR dg -> dh
iv OR jb -> jc
x RSHIFT 5 -> aa
NOT hj -> hk
NOT im -> in
fl LSHIFT 1 -> gf
hu LSHIFT 15 -> hy
iq OR ip -> ir
iu RSHIFT 5 -> ix
NOT fc -> fd
NOT el -> em
ck OR cl -> cm
et RSHIFT 3 -> ev
hw LSHIFT 1 -> iq
ci RSHIFT 5 -> cl
iv AND jb -> jd
dd RSHIFT 5 -> dg
as RSHIFT 2 -> at
NOT jy -> jz
af AND ah -> ai
1 AND ds -> dt
jx AND jz -> ka
da LSHIFT 1 -> du
fs AND fu -> fv
jp RSHIFT 1 -> ki
iw AND ix -> iz
iw OR ix -> iy
eo LSHIFT 15 -> es
ev AND ew -> ey
ba AND bc -> bd
fp AND fv -> fx
jc AND je -> jf
et RSHIFT 2 -> eu
kg OR kf -> kh
iu OR jf -> jg
er OR es -> et
fo RSHIFT 2 -> fp
NOT ca -> cb
bv AND bx -> by
u LSHIFT 1 -> ao
cm AND co -> cp
y OR ae -> af
bn AND by -> ca
1 AND ke -> kf
jt AND jv -> jw
fq OR fr -> fs
dy AND ej -> el
NOT kc -> kd
ev OR ew -> ex
dd OR do -> dp
NOT cv -> cw
gr AND gt -> gu
dd RSHIFT 1 -> dw
NOT gw -> gx
NOT iz -> ja
1 AND io -> ip
NOT ag -> ah
b RSHIFT 5 -> f
NOT cr -> cs
kb AND kd -> ke
jr AND js -> ju
cq AND cs -> ct
il AND in -> io
NOT ju -> jv
du OR dt -> dv
dd AND do -> dq
b RSHIFT 2 -> d
jm LSHIFT 1 -> kg
NOT dq -> dr
bo OR bu -> bv
gk OR gq -> gr
he OR hp -> hq
NOT h -> i
hf AND hl -> hn
gv AND gx -> gy
x AND ai -> ak
bo AND bu -> bw
hq AND hs -> ht
hz RSHIFT 1 -> is
gj RSHIFT 5 -> gm
g AND i -> j
gk AND gq -> gs
dp AND dr -> ds
b RSHIFT 3 -> e
gl AND gm -> go
gl OR gm -> gn
y AND ae -> ag
hv OR hu -> hw
1674 -> b
ab AND ad -> ae
NOT ac -> ad
1 AND ht -> hu
NOT hn -> ho

View file

@ -1,16 +0,0 @@
{
"scripts": {
"lint": "prettier solution_a.ts solution_b.ts --write --print-width=180",
"a": "ts-node solution_a.ts",
"b": "ts-node solution_b.ts"
},
"devDependencies": {
"prettier": "^2.1.2"
},
"dependencies": {
"@types/node": "^14.14.8",
"ts-node": "^9.0.0",
"typescript": "^4.0.5"
},
"license": "WTFPL"
}

View file

@ -1,64 +0,0 @@
import fs from "fs";
const input = fs.readFileSync("input").toString().split("\n");
const COMMAND_REGEX = /[A-Z]+/g;
const ARGUMENTS_REGEX = /[a-z0-9]+/g;
// Dictionary of our bitwise methods
const BITWISE_METHODS = {
AND: (a: number, b: number) => a & b,
OR: (a: number, b: number) => a | b,
NOT: (a: number, b?: number) => ~a,
LSHIFT: (a: number, b: number) => a << b,
RSHIFT: (a: number, b: number) => a >> b,
};
// Parse instruction from input and return object with command, arguments and destination wire
function parseInstruction(instruction: string): Instruction & { destination: string } {
const raw_command = instruction.match(COMMAND_REGEX);
const args = instruction.match(ARGUMENTS_REGEX) ?? [];
const destination = args.pop()!;
const command = raw_command === null ? raw_command : (raw_command[0] as keyof typeof BITWISE_METHODS);
return {
command,
args: args.map((arg) => (isNaN(Number(arg)) ? arg : Number(arg))) as [Wire | number, Wire | number | undefined],
destination,
};
}
type Wire = string;
type Instruction = {
command: keyof typeof BITWISE_METHODS | null;
args: [Wire | number, Wire | number | undefined];
};
// Calculate value for one of the wires (recursively)
function calculateWire(wireName: Wire, wires: Map<Wire, any>) {
const wire = wires.get(wireName);
if (typeof wireName === "number") return wireName;
if (typeof wire === "number") return wire;
if (typeof wire === "undefined") return undefined;
if (!wire.command) {
wires.set(wireName, calculateWire(wire.args[0], wires));
} else if (Object.keys(BITWISE_METHODS).includes(wire.command)) {
wires.set(wireName, BITWISE_METHODS[wire.command as keyof typeof BITWISE_METHODS](calculateWire(wire.args[0], wires), calculateWire(wire.args[1], wires)));
}
return wires.get(wireName);
}
async function main() {
// Our parsed wires in format {wire: value} or {wire: instruction}
const wires = new Map<Wire, Instruction>();
// Fill WIRES with parsed instructions and their future values
input.forEach((instruction) => {
const parsedInstruction = parseInstruction(instruction.trim());
wires.set(parsedInstruction.destination, { command: parsedInstruction.command, args: parsedInstruction.args });
});
return calculateWire("a", wires);
}
main().then(console.log).catch(console.error);

View file

@ -1,66 +0,0 @@
import fs from "fs";
const input = fs.readFileSync("input").toString().split("\n");
const COMMAND_REGEX = /[A-Z]+/g;
const ARGUMENTS_REGEX = /[a-z0-9]+/g;
// Dictionary of our bitwise methods
const BITWISE_METHODS = {
AND: (a: number, b: number) => a & b,
OR: (a: number, b: number) => a | b,
NOT: (a: number, b?: number) => ~a,
LSHIFT: (a: number, b: number) => a << b,
RSHIFT: (a: number, b: number) => a >> b,
};
// Parse instruction from input and return object with command, arguments and destination wire
function parseInstruction(instruction: string): Instruction & { destination: string } {
const raw_command = instruction.match(COMMAND_REGEX);
const args = instruction.match(ARGUMENTS_REGEX) ?? [];
const destination = args.pop()!;
const command = raw_command === null ? raw_command : (raw_command[0] as keyof typeof BITWISE_METHODS);
return {
command,
args: args.map((arg) => (isNaN(Number(arg)) ? arg : Number(arg))) as [Wire | number, Wire | number | undefined],
destination,
};
}
type Wire = string;
type Instruction = {
command: keyof typeof BITWISE_METHODS | null;
args: [Wire | number, Wire | number | undefined];
};
// Calculate value for one of the wires (recursively)
function calculateWire(wireName: Wire, wires: Map<Wire, any>) {
const wire = wires.get(wireName);
if (typeof wireName === "number") return wireName;
if (typeof wire === "number") return wire;
if (typeof wire === "undefined") return undefined;
if (!wire.command) {
wires.set(wireName, calculateWire(wire.args[0], wires));
} else if (Object.keys(BITWISE_METHODS).includes(wire.command)) {
wires.set(wireName, BITWISE_METHODS[wire.command as keyof typeof BITWISE_METHODS](calculateWire(wire.args[0], wires), calculateWire(wire.args[1], wires)));
}
return wires.get(wireName);
}
async function main() {
// Our parsed wires in format {wire: value} or {wire: instruction}
const wires = new Map<Wire, Instruction>();
// Fill WIRES with parsed instructions and their future values
input.forEach((instruction) => {
const parsedInstruction = parseInstruction(instruction.trim());
wires.set(parsedInstruction.destination, { command: parsedInstruction.command, args: parsedInstruction.args });
});
const parsedInstruction = parseInstruction("46065 -> b");
wires.set(parsedInstruction.destination, { command: parsedInstruction.command, args: parsedInstruction.args });
return calculateWire("a", wires);
}
main().then(console.log).catch(console.error);

View file

@ -1,69 +0,0 @@
{
"compilerOptions": {
/* Visit https://aka.ms/tsconfig.json to read more about this file */
/* Basic Options */
// "incremental": true, /* Enable incremental compilation */
"target": "ES2019", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
"module": "CommonJS", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
// "lib": [], /* Specify library files to be included in the compilation. */
// "allowJs": true, /* Allow javascript files to be compiled. */
// "checkJs": true, /* Report errors in .js files. */
// "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
// "declaration": true, /* Generates corresponding '.d.ts' file. */
// "declarationMap": true, /* Generates a sourcemap for each corresponding '.d.ts' file. */
"sourceMap": false, /* Generates corresponding '.map' file. */
// "outFile": "./", /* Concatenate and emit output to single file. */
// "outDir": "./", /* Redirect output structure to the directory. */
// "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
// "composite": true, /* Enable project compilation */
// "tsBuildInfoFile": "./", /* Specify file to store incremental compilation information */
// "removeComments": true, /* Do not emit comments to output. */
"noEmit": true, /* Do not emit outputs. */
// "importHelpers": true, /* Import emit helpers from 'tslib'. */
// "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
// "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
/* Strict Type-Checking Options */
"strict": true, /* Enable all strict type-checking options. */
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}
}

View file

@ -1,67 +0,0 @@
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@ -1,5 +0,0 @@
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View file

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View file

@ -1,16 +0,0 @@
{
"scripts": {
"lint": "prettier solution_a.ts solution_b.ts --write --print-width=120",
"a": "ts-node solution_a.ts",
"b": "ts-node solution_b.ts"
},
"devDependencies": {
"prettier": "^2.1.2"
},
"dependencies": {
"@types/node": "^14.14.8",
"ts-node": "^9.0.0",
"typescript": "^4.0.5"
},
"license": "WTFPL"
}

View file

@ -1,9 +0,0 @@
import * as fs from "fs";
const input = fs.readFileSync("input").toString();
async function main() {
const lines = input.split("\n").map((line) => line.trim());
return lines.reduce((prev, line) => prev + (line.length - eval(line).length), 0);
}
main().then(console.log).catch(console.error);

View file

@ -1,15 +0,0 @@
import * as fs from "fs";
const input = fs.readFileSync("input").toString();
async function main() {
const lines = input.split("\n").map((line) => line.trim());
let result = 0;
for (const line of lines) {
const replaced = '"' + line.replace(/\\/g, "\\\\").replace(/"/g, '\\"') + '"';
result += replaced.length - line.length;
console.log(line, replaced);
}
return result;
}
main().then(console.log).catch(console.error);

View file

@ -1,69 +0,0 @@
{
"compilerOptions": {
/* Visit https://aka.ms/tsconfig.json to read more about this file */
/* Basic Options */
// "incremental": true, /* Enable incremental compilation */
"target": "ES2019", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
"module": "CommonJS", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
// "lib": [], /* Specify library files to be included in the compilation. */
// "allowJs": true, /* Allow javascript files to be compiled. */
// "checkJs": true, /* Report errors in .js files. */
// "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
// "declaration": true, /* Generates corresponding '.d.ts' file. */
// "declarationMap": true, /* Generates a sourcemap for each corresponding '.d.ts' file. */
"sourceMap": false, /* Generates corresponding '.map' file. */
// "outFile": "./", /* Concatenate and emit output to single file. */
// "outDir": "./", /* Redirect output structure to the directory. */
// "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
// "composite": true, /* Enable project compilation */
// "tsBuildInfoFile": "./", /* Specify file to store incremental compilation information */
// "removeComments": true, /* Do not emit comments to output. */
"noEmit": true, /* Do not emit outputs. */
// "importHelpers": true, /* Import emit helpers from 'tslib'. */
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@ -1,67 +0,0 @@
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@ -1,16 +0,0 @@
{
"scripts": {
"lint": "prettier solution_a.ts solution_b.ts --write --print-width=120",
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"license": "WTFPL"
}

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@ -1,6 +0,0 @@
import * as fs from "fs";
const input = fs.readFileSync("input").toString();
async function main() {}
main().then(console.log).catch(console.error);

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@ -1,6 +0,0 @@
import * as fs from "fs";
const input = fs.readFileSync("input").toString();
async function main() {}
main().then(console.log).catch(console.error);

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@ -1,69 +0,0 @@
{
"compilerOptions": {
/* Visit https://aka.ms/tsconfig.json to read more about this file */
/* Basic Options */
// "incremental": true, /* Enable incremental compilation */
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"module": "CommonJS", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
// "lib": [], /* Specify library files to be included in the compilation. */
// "allowJs": true, /* Allow javascript files to be compiled. */
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// "outFile": "./", /* Concatenate and emit output to single file. */
// "outDir": "./", /* Redirect output structure to the directory. */
// "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
// "composite": true, /* Enable project compilation */
// "tsBuildInfoFile": "./", /* Specify file to store incremental compilation information */
// "removeComments": true, /* Do not emit comments to output. */
"noEmit": true, /* Do not emit outputs. */
// "importHelpers": true, /* Import emit helpers from 'tslib'. */
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// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
/* Module Resolution Options */
"moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
// "baseUrl": "./", /* Base directory to resolve non-absolute module names. */
// "paths": {}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
// "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */
// "typeRoots": [], /* List of folders to include type definitions from. */
// "types": [], /* Type declaration files to be included in compilation. */
// "allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
"esModuleInterop": true, /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
// "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */
// "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */
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// "sourceRoot": "", /* Specify the location where debugger should locate TypeScript files instead of source locations. */
// "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
// "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */
// "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
/* Experimental Options */
// "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */
// "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */
/* Advanced Options */
"skipLibCheck": true, /* Skip type checking of declaration files. */
"forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */
}
}

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@ -1,67 +0,0 @@
# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
# yarn lockfile v1
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pub const INPUT: &str = include_str!("./input.txt");
type Input = &'static str;
type Output = usize;
fn parse_input(input: &'static str) -> Input {
input
}
pub fn main() {
let input = parse_input(INPUT);
println!("Part 1: {}", part_1(&input));
println!("Part 2: {}", part_2(&input));
}
fn part_1(input: &Input) -> Output {
Output::default()
}
fn part_2(input: &Input) -> Output {
Output::default()
}
#[cfg(test)]
mod tests {
use super::{parse_input, Output};
const SAMPLE_INPUT: &str = r#""#;
#[test]
fn test_part_1_with_sample_solution() {
let input = parse_input(SAMPLE_INPUT);
assert_eq!(super::part_1(&input), Output::default());
}
#[test]
fn test_part_1_with_solution() {
let input = parse_input(super::INPUT);
assert_eq!(super::part_1(&input), Output::default());
}
#[test]
fn test_part_2_with_sample_solution() {
let input = parse_input(SAMPLE_INPUT);
assert_eq!(super::part_2(&input), Output::default());
}
#[test]
fn test_part_2_with_solution() {
let input = parse_input(super::INPUT);
assert_eq!(super::part_2(&input), Output::default());
}
}

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pub const INPUT: &str = include_str!("./input.txt");
fn parse_input(input: &'static str) -> Vec<[u32; 2]> {
let input = input
.lines()
.map(|line| -> [u32; 2] {
let nums = line
.split_whitespace()
.map(|num| num.parse::<u32>().unwrap())
.collect::<Vec<_>>();
[nums[0], nums[1]]
})
.collect::<Vec<_>>();
input
}
pub fn main() {
let input = parse_input(INPUT);
let result_1 = part_1(&input);
println!("{result_1}");
let result_2 = part_2(&input);
println!("{result_2}");
}
fn part_1(input: &Vec<[u32; 2]>) -> u32 {
let mut left = vec![];
let mut right = vec![];
for pair in input {
left.push(pair[0]);
right.push(pair[1]);
}
left.sort_unstable();
right.sort_unstable();
let mut diff = 0;
for i in 0..left.len() {
diff += u32::abs_diff(left[i], right[i]);
}
diff
}
fn part_2(input: &Vec<[u32; 2]>) -> u32 {
let mut left = vec![];
let mut right = vec![];
for pair in input {
left.push(pair[0]);
right.push(pair[1]);
}
let mut result = 0;
for num in left {
result += num * right.iter().filter(|&&x| x == num).count() as u32;
}
result
}
#[cfg(test)]
mod tests {
use crate::parse_input;
const SAMPLE_INPUT: &str = r#"3 4
4 3
2 5
1 3
3 9
3 3"#;
#[test]
fn test_part_1_with_sample_solution() {
let input = parse_input(SAMPLE_INPUT);
assert_eq!(super::part_1(&input), 11)
}
#[test]
fn test_part_1_with_solution() {
let input = parse_input(super::INPUT);
assert_eq!(super::part_1(&input), 2192892);
}
#[test]
fn test_part_2_with_sample_solution() {
let input = parse_input(SAMPLE_INPUT);
assert_eq!(super::part_2(&input), 31)
}
#[test]
fn test_part_2_with_solution() {
let input = parse_input(super::INPUT);
assert_eq!(super::part_2(&input), 22962826);
}
}

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#![feature(array_windows)]
pub const INPUT: &str = include_str!("./input.txt");
fn parse_input(input: &'static str) -> Vec<Vec<i32>> {
let input = input
.lines()
.map(|line| -> Vec<i32> {
line.split_whitespace()
.map(|num| num.parse::<i32>().unwrap())
.collect::<Vec<_>>()
})
.collect::<Vec<_>>();
input
}
pub fn main() {
let input = parse_input(INPUT);
let result_1 = part_1(&input);
println!("{result_1}");
let result_2 = part_2(&input);
println!("{result_2}");
}
fn is_safe(report: &Vec<i32>) -> bool {
let increasing = report[0] < report[1];
report.array_windows::<2>().all(|window| {
let increase = window[1] - window[0];
if increasing {
1 <= increase && increase <= 3
} else {
-1 >= increase && increase >= -3
}
})
}
fn part_1(input: &Vec<Vec<i32>>) -> usize {
input.iter().filter(|&report| is_safe(report)).count()
}
fn part_2(input: &Vec<Vec<i32>>) -> usize {
input
.iter()
.filter(|report| {
(0..report.len())
.map(|i| [&report[..i], &report[i + 1..]].concat())
.any(|modified_report| is_safe(&modified_report))
})
.count()
}
#[cfg(test)]
mod tests {
use crate::parse_input;
const SAMPLE_INPUT: &str = r#"7 6 4 2 1
1 2 7 8 9
9 7 6 2 1
1 3 2 4 5
8 6 4 4 1
1 3 6 7 9"#;
#[test]
fn test_part_1_with_sample_solution() {
let input = parse_input(SAMPLE_INPUT);
assert_eq!(super::part_1(&input), 2)
}
#[test]
fn test_part_1_with_solution() {
let input = parse_input(super::INPUT);
assert_eq!(super::part_1(&input), 379);
}
#[test]
fn test_part_2_with_sample_solution() {
let input = parse_input(SAMPLE_INPUT);
assert_eq!(super::part_2(&input), 4)
}
#[test]
fn test_part_2_with_solution() {
let input = parse_input(super::INPUT);
assert_eq!(super::part_2(&input), 430);
}
}

6
day03/input.txt Normal file
View file

@ -0,0 +1,6 @@
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*what()}[*how()?why()mul(386,104)[from()];mul(208,918))){(+<how(),:how()mul(694,384)@!-*{mul(69,248)?',what(), ^<;mul(902,984)*mul(369,924)^?^mul(594,537)>@,when(),mul(922,47)@mulwhy()-mul(890,397)-^/+'select()[&!who()mul(547,6)-]>:^;mul(870,938),~?[%mul(8,689!>*@!]mul(311,244)->how()$when()'}mul(213,766)$:!+ mul(620,644)%where()mul(430,127)%{[mul(682,585)mul(245,26)don't()mul(510,688)where()]-mul(844,443)/@+who()?who()when()mul(453,182)mul(928,131)<select()who()(]mul(422,986)[&&who()[how()$mul(54,860)!]{;mul(549,103)<%;mul(807,173)/mul(513,515)@mul(852,657)'#when(293,457)$&+why()mul(694,888)*why()mul(912,542)$$!:$mul(776,404^$$}&(mul(965,836)-what()*:]mul(97,471)/*~]what(){[what()mul(241,843)where()[^mul(639,208'}(- who()how()mul(869,533)how()who()what()select()%don't() where()(why(811,325)!<where()^~;mul(955,806)][)])+,% mul(207,798):&who(),<where() how()mul(857,424::,]mul(250,416)select()'{mul(815,806)[)/@mul(285,41)$mul(901,755)from()!)?why()){!mul(78>?&'{[+@?,mul(55,18)mul(795,739):}what())@$]'mul(377,34)&,~*why()<do()<mul(795,39)where()$%+?>/@who()mul(467,127))&how(28,925)mul(955,519)}where(830,382)$when()[-why()/+mul(310,139)mul(217,931)!mul(574,122)!mul(227,82)where()mul(940,851) {mul(545,758)<select()?[mul(720,337)mul(52,940)~how()from(855,795)*mul(664,962)>:from()%~/mul(937,897)mul(665,919)^&/ &what()mul(23,37),select()%*mul(98,952);mul(171,967)who()$+]when()%$mul(426,870)<<;;why()[do()@mul(28,286)-what()([+select()why()do()<^+what()^?~-mul(246,992)/mul(938,936)'$>when()mul(18,736)%?how()-what()from() <do()mul(994,498);<,how(800,873)[%/&mul(260,162)why()]when())(what()}#don't() mul(99,24)(*!@]]mul(490,150)~mul(47,794)$#}where()(who(){what():mul(369,830)mul(24,75)where():(,@)]$~mul(509,783)mul(914,160)+mul(619,799)&@~how()from()mul(445,64)*>when()select()mul(37,387)}<[}?+how()#&?mul(779,369)select()mul(750,510)%[,'from()>who()mul(13,97)what(547,477)why(859,962)?,where()mul(806,879)mul(577,179)#from()+>where(705,292)what(712,121))when(227,970)*mul(942,336)& who())!<mul(345,567)/-select(838,572)-~'*)why()[mul(12,866)@^where()?<mul(985,870)where(503,821);^mul(803,551)'[%#where()-who())mul(38,22)^}$who()?,how()%what(528,476)who()mul(486,865)<(/mul(714,503)%%,$select()]mul(299,58)-when()~why()-}mul(684,388) /^<:[;:don't()why()who()<who()-{mul(413,975),>*mul(992,750):from()<:+-mul(938,672)mul(55,872)mul(354,183)>+(+mul(520,932)#from():}{who()$mul(675,973)@^@%mul(58,468)/select()what()->]mul(343,375)^ ,%mul(480,300)where()(/*$mul(695,676)how()where(),-!:from()mul(363,212)~(!where()-[what()don't()mul(614,594))mul(569,802)'mul(995,471)~&$:^:how()how()-^mul(853,428)-;-%what()(from()+do()'where()() !{^?#mul(376,780)select())where()select()&{-,{,mul(894,646)select()*< @}*[}}mul(332,665)[

107
day03/main.rs Normal file
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#![feature(array_windows)]
use regex_lite::Regex;
pub const INPUT: &str = include_str!("./input.txt");
type Input = &'static str;
fn parse_input(input: &'static str) -> Input {
input
}
pub fn main() {
let input = parse_input(INPUT);
println!("Part 1: {}", part_1(&input));
println!("Part 2: {}", part_2(&input));
}
fn part_1(input: &Input) -> usize {
const PATTERN: &str = r"mul\((\d{1,3})\,(\d{1,3})\)";
let regex = Regex::new(PATTERN).expect("I fucked up the regex");
assert!(regex.is_match(INPUT));
let mut sum = 0;
for r#match in regex.captures_iter(input) {
let first = r#match
.get(1)
.expect("Missing first number")
.as_str()
.parse::<usize>()
.expect("Failed to parse first number:");
let second = r#match
.get(2)
.expect("Missing second number")
.as_str()
.parse::<usize>()
.expect("Failed to parse second number:");
sum += first * second;
}
sum
}
fn part_2(input: &Input) -> usize {
const PATTERN: &str = r"mul\((\d{1,3})\,(\d{1,3})\)|do\(\)|don't\(\)";
let regex = Regex::new(PATTERN).expect("I fucked up the regex");
assert!(regex.is_match(INPUT));
let mut sum = 0;
let mut enabled = true;
for r#match in regex.captures_iter(input) {
match r#match.get(0).unwrap().as_str() {
"do()" => enabled = true,
"don't()" => enabled = false,
_ if enabled => {
let first = r#match
.get(1)
.expect("Missing first number")
.as_str()
.parse::<usize>()
.expect("Failed to parse first number:");
let second = r#match
.get(2)
.expect("Missing second number")
.as_str()
.parse::<usize>()
.expect("Failed to parse second number:");
sum += first * second;
}
_ => {}
}
}
sum
}
#[cfg(test)]
mod tests {
use crate::parse_input;
const SAMPLE_INPUT_1: &str =
r#"xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))"#;
const SAMPLE_INPUT_2: &str =
r#"xmul(2,4)&mul[3,7]!^don't()_mul(5,5)+mul(32,64](mul(11,8)undo()?mul(8,5))"#;
#[test]
fn test_part_1_with_sample_solution() {
let input = parse_input(SAMPLE_INPUT_1);
assert_eq!(super::part_1(&input), 161)
}
#[test]
fn test_part_1_with_solution() {
let input = parse_input(super::INPUT);
assert_eq!(super::part_1(&input), 173529487);
}
#[test]
fn test_part_2_with_sample_solution() {
let input = parse_input(SAMPLE_INPUT_2);
assert_eq!(super::part_2(&input), 48)
}
#[test]
fn test_part_2_with_solution() {
let input = parse_input(super::INPUT);
assert_eq!(super::part_2(&input), 99532691);
}
}

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day04/input.txt Normal file
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XMAMAMSASMSSSMSAXAMXMSMAXAMMMXXXXMMXMAMAMXMXAXMMMMSAMAAXAXAXMXMAMXMXAAMAAMAMXMMXMMMMMMMMSAMAMMAMAMAMASXMXMXXSAXMAAASXSMXSAAAXXAXAXXSSMMASAMM
XMAMAMXAMXXXMAMXMMAXAAXMXSAASAMXSMASMASAMXSXMSXSXAMAMMMSSMMSXXMASAMMMMMXXMASMMMSMMASAMASMASXMMAMASXMAMXMAMSXMXSSSSMAMAXAMMSMMSMMAMXMAAMXMMMA
MSASXSMSMXSAMXMMMMSMXMMMAMXMMASXXAXXMAMASASAAXAMMSSMMMXAXMAMMMXASMSASXMSSSXSAAAMAAASASXSAMSAASXXXSASMMMXAXAMMXMXMAMXSMMXXAXMAMXMXMASXMMSMASX
MSXMASXAAXSAMXMAXXXAMMMMASMSSMMXMXMSMSSMMASMMMAMAMAASMMMMMASMSMMSXAXSAMAAAASXMMSSMXSAMMSMMSMMMSMSMXMAASXXMAXMAXMMXMMAXXXMASMXMAMASMSASAXMAMX
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SAMMAMAAASMSMSAAAMMAXMSAMMMSMMMMMSMAMAMSMMXSMAAXAMSXMAAMAAAAAMSXAXSMMXMASAMAMMXMXMAMMXAMSAMSMAMXMAMAMAMSSMMMSSXAAAAMAMAMASXMASXASXMAXAMAMAMX
MASXAMMMMXXAMXMMXSMAMASASXXMMSSXMAXAMXXAXSAMSSMSSMXXAMMMMMMMMXSMXXAAXXXSXMMAMAXSXXXMASMMMMXAAXXSMMMSSMXXAAXMASMMXXMXAMAMASXMASMASAMMSXMMXMMX
XAMMXSAXXXSMSSMSMSXAMMSAMXAAAXMASMSXMXSSSMAXAXMAMMMMAMAXXXXSMAXAMSSMMMXMAXSXMSAMXSSMXSAAAMMMXSMMMAAMAAXXMMMXMXXMASMSXSMSAMXMAXAMMXMXMXMAAMSS
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MXASMSMXXAXAXMXMASMMXAAMMMMMSMAXAAMXMMSAMMMSMMMXMMXSXMAXXXAAASMMMMMAAMAMAMAXSASASMSAMXAXXXXASXMSAMSSMMMXAAXMAMXAMMXMASXSXAAXAAAXAAXMASMMMMAS
SMMMMAMSMXMXMXMMXSXXMSMSAMAAAMSMSMMAXMMMMMAXAXMMASAMXMMSSMMMXMXMAXMXMMSMXMXMMAMMMASXSMMMSAMXMMAXMAMAAASMSMMSSSMMMAAMMXMMMAASMMMXSAMSASAAAXSX
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MMSAAAXAAMMMAXSAMASAXMXMMMAAAMXAMAMMMMAXMAMXXMXSSXAAAASXAMAMMSMMMSMSAAXSAASXSMSSSXSMSXSASASMSAAASASMMAMMMXAXXAAMMSMMMAXMMSSMSASMSSXSAMASAXXS
SXMXMMMMMXMMXMSXSXMASMXAAMMSMSMMSXMAXMMMMASXAAASMMSMSMMASAMXAXAMXXASMMXMSAMAXAAAMMMAXMMXSAMAXXSSXXSXMAMAMMMSSMSMAXAASAMXXXMAMXMAAAAXSMMAMXXX
AXMXMSMMXMSSMAXAXAMAXMAMMSAMMAXXXMSMSMMXSAMXMMMMAXAXMXAAMAXMSSSXSMAMXMXXXSMAMMMXMAMMMAXXMAMMMXMXMAMXSMSASXAAMMAMSSSMMASXMSMSMSMMMMMMXMASXMXX
XMAMAAAXXMAAMXMMMMMMSXMSAMAMSSSXMMAMAAAAMAXAMXMXMMSMSMMSMXMXAAXAXMXMSMSMAMMSXSMXMXSAASMXMAMXMAASXSAAMXSASMMSSXMSAMMXSAMXASAMXXASMXSSXMSMAMSM
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AAAAMMSMSASAMXXSAMAXXXSASXMMMMMAAMMMSSMMSMSMMAXAMXXMMMAXXSSMSMASAMXASAXXASMMMMAAAXAXMXMXXSXSXMXMASMXSXASASAMAXMSMSMSAAAASXMXSSXMASMAASAMXMXM
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AMAMMXSAMAMAMMMSMMMAAXXXMMMSMMXMSAMMSSMAMMMMXAAAAXMSMXMAXMAXAAMXSMMSMXASXSXSXMXMMXXAMAMMSMAMASXMAXMXMAMSASAMASMMSMXMMXXXMAXMSSXMASAXXMAMXSAS
XXAXXASAMXSXXAAAAASXSMMMMSAAXMAMMAMMAAMASASASMSSSMXAMXSAMXSSSMSAMMMXSMXXAMAXMAMSMXSAMXSAAMAMXXXXMXAAMMXSMMXSAMXXAMASAAXMSMMMAXMSXMASMSMSMMAM
SMXSMASAMXMMMMSSMMMXMAMAAMXMAMMMSAMXSSMXSAMAXAXXMXSXSXMASAAAAAMMSASAMXSMAMAMASMAMXMASASXXMAXMMSSSSSMMSAMMAASXMXSASAXMMSXAXSMAXMMSMXMXAAAXMMM
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XAMMSMXMMSAMAXXMAMSMMXMMSAMAXMAXAAAXMMMSAMXMXXSSSSMAMXMAMMXMMMMASMMMAAMAAXXSXXAMMAMXMAXAMSMSMMAAAXMMMMMSMSMSSMXSMMSSMASASXSMMSXSAXXAMAMAAMAM
MXMAAAXSAMAMSSSMSAMAAXMASXMMAMXMSSSMSXAXAMXSAMXXAAMSSMMSSMSSSMSAMAASXMSMSMMMMMXSMMMMSMSMMAXAAMSSSSXSAMAAAAXAAAMXMAAAMXMAMXAASAAMMMMXSMSSSMAS
AXMSMXMMASMMMAXAMASMSSMASXMSXXXMAMXAMMASXMAXMASMMXMAAXAMAAAAAXMASXMMAASAAAXAAXAMAMXAAAAMMMXSSMAXAXAMAXSMSMMSSMMAMMMMMXMSMMSMMMSMSXSAMXAXAMXA
SAMAMSAMAMAASXMXMAMXAAMAMXAAMSMSMMMMMMAMXMXSXSXAASMSMMXSAMMSMMSAMMASMMMSMSMSXSASAMMSMSMSXXMAMXMXXMMMAMMAAXXAMXSXSSSSSXMMAMMMAMAAAAMASMMXXMAX
MMSAMMAMXSSMMAXXMXSMSSMSSSMSAAASXAAAXXASXMAXXAMMMSAXMMAXXAAXMMMAMMAMASAXXXMAMXASXXMAAMAXASASXSXSAAXMASMSMMSXMXMASAAAMAMSAMAMAMMSMXMMMMSMSMSM
MAMMSSMMXXMAXXMXAXSAMXAXAXAAXMSMSSMMMSXSAMSSMMXMAMAMAMAXMXAMXMMMMMSSMMASMSSSMMXMASXMXMSMXMAMAAAXSMMMAMXAAAMMMMMSMMMMSAMXASXMXSAMXAMAAXAAAAAX
MMMAXAASXXSAMSMAXXXSSSSMMMXMXXXAAMASAMMSAMAAXXAMASASMMSASAASXSMSXMXAXMAMMAAAAASMXMAMXMASMSXMMMSMXMMSSMSSMMXAMMXAXXAXMXSSMMMAAMAMSSSXSSMSMSMS
SXMMMXMXAXMASAAMAMMMMMAAXAAMXMMMMSAMAMASAMSSMSXSASXSAAXAXXSAAAASAMSXMMMSMMSMMSMAASAMXMAXXAXXXAAMXAAAAAXXXAXXSSSMSSMSXXMASAMXMSAMSMSMAAMMXMAA
MAMXMMXMXMMXSASMSXAAAXSMMMMMAAAAAMXSAMMXXMAXASAMASASMMMMMMAMSMMXAMSMMXMAXMAMMAMSMSMXXMMMMMAMMMSSSMMSSSMMSMSXAAMXMAXAXMXMMMSAXXAXMAMMSMMMAMXM
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SXMASMMXAXXXXSSXMMMSAAMAMMSSMMSMAMXMXMAMSAMAAMASMSMSAAAAAXMXMAMMMSMMMAMAMMAMAAAMMSAMMSMMAXMMMMMXSASXSAMXAAASAMXAAMMMMSMXXXMMSAMMMAXASAAAAAAS
MAXAMASXMMSMMMXXXXAMMXMSXAAXXAMMMMAMXSXMXMSMMSAMAMAMMMMMMMMAXSMXAXAAMXMSXSXMMMMMXSAMAAASAMXAAAMASAMAMAMSXXASASMMMSAAXMASMMSASMMMMSMMMMMMMSMS
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MASMSSMASMASMAMAAXMMAXMXMASMMASAXSAMASMMSMAMMMXMAXXAAMAMMAXSASMXSAXSXMSMMMSMSASAXMAMMSMSMXSSXASAMXSAMXAXXMAMMSMMMAXXMMSSMAXXAXXSXSAAMMSASAMM
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AXSMSAXMSSMSSMMMMMXMMSMMAMAMAAAXAMMASXSAAAXXMAMAMAXSSXMASXMSMAMMMSXSSSMSAAXMMXMAMAMSAMMSMXMXSMMAMMAMASMAMMMMXMASMSXSXSMMXMSSSSSSSSMSMSMAMAMA
MAXXMAXXAMXAAASAMXXAXAAMXMSMMMMMAMSMXMAXMSSMXAMXMAMMMAXAXAXMXMSAMXAMXAAMMMXMXMSXMSAMAMAXAMAMMAMAMSMMMXMAMXMSAMMSAXXAAXXMAXXXAAMMMAMMMMMXSAMA
SMMMSAMMASXSSMMAAAMMMSSMXMXXMAMSSMXSASAMXAAMSMSXMASMSSMSSMMSAMAMXMSMXMMMXMMMAMSAMXXAAXMXSASASMMXMAMAXMMSSSXAMXMMAMMSMXASXSSMMMMAMAMXAASMSMSX
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SSMSMSXSXSMSMMXXSAAMMMSMXMSMMAMSSMMSSSMMAXXMAXAMMXSMAMXXAMXMXXMAXXMXMXASMSSMSASASASAAMMXSMSXXMXMMAMXAMMSMMXMSXSAMXSMASMMMMMXSAXAAXXMMMMMMAMA
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MMAMAMMMXSAMXAMXAXSAXAMXAMAMMASMSSMMXMMXAAXMAMMAAAXMMXSAASMSSXMAAXMASAMMXMXMMAMAMXSXAASAMMMMXMMSASMAMMSSSMAAMAXASXSSXSAMSMSAAAMAAXMASXMASAXA
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SMMMSXMAXSMMASXMSAMAXAAXMXAAXXXAMXMMMMSSSMSSMMMSMSSXSAMMMMMASMSMSMAAASASASXMASXXAXAAMASMSMASMMASMMMXSAASMXAAXMAXAXAMMMSMSMSAMXMAMXAMXAAMSSSS
AXAAMASAMMXMXMAMXMSSSMMMAMXMMXSXMAAAASAMAAXXMAMAMXMXMAMAMAMMMAAXASMMMMAMAXAMXMAXMMXSAMAAAXXXASAXXAXMMMXSAXSMXSAMSSXSAAAXSAMXSXXSMSMMSMSMSAAX
SSMXSMMASMAMMSSMXXAXXAAASAXXAMMMSSSSXMASMMMXSSSSMMXSXSSMXAXSMMMSASXMAMMMMSXSXSMSXMAXMSMSMSXSXMASMSSSXMAMMMXAMSASMXASMSSXSASASAAAAAMMXAMMMMMM
MAXXAXSAMMAXMAXMMMMSSSXSAMXSXMXAAMMMMSMMXMSAMMAMXSMMAMAASXSMAAAMASASMMMAAXXMAAXAAMASXMAXASMSASXSAAAAAMAMAAMAMSMMMMMMXXMAMAMASMMMSSSMMMMASXSX
SAMMAMXXSSSSMAMMAAAMXAXMXSASASMMSMSAAAMXSXMASMSMAMAMSMMMXMAXSMXSASMMSSSMXSAMAMSSSMASXMMMMMAMAMAMAMMMMSSSMSSSMSAMXASXSAMMMSMMMXAXAAAMASXMMAAS
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SMSMMMXXAXAXAMMMAMAXSSXMAMSAAAAXMXSAMAMSMSSSMMSSXMAAAAMMAMAAAMXMXXMAMAAMMXMAXAMXXAASXMAMXAXXXSMSSSXSAAAAXMMSMAMSMMAMMAMXMAXAXMAMASMMSAXXSXXX
AAAXMASMAMSSSMXMASXMAMMMAAMXMMMXMASMAAAXXAAASAMAASXSMMSASMMXAMASASMSMSMMSAMMMMMSMSXMSMSMSMMAMXAXAAASXXMMMAMAMMMAXSASMMSAMAMMMSXMASAAMMSMMMSM
MMMSMASMAMMAAAXSAXXAAXXMMSMSXXMXSAMXSMSAMXSMMSXSXMAXAAAMMMMMAMASASAAAAAASMSSSSXSAXXXAXXAXSXMAAXMMMMMXSSMSAMXSSSMXSASAAMXMSSXAMXMASMMXMAAAAAX
ASAXMAMMMSMSMMMMASMSMXXXAAXXMASXMXSMXMXAMXXXMAXXMMXMMMSXMAMSSMXMXMMMSMMMSAAAAAAMMMASMMMMMSMXMMMAAXAMAMAASASMMMAXAMMMMMMMXAXMAMSAMXASASMSMSSS
XAXXXXMAXSMXMMMMMMMAMXXSSSMMSSMAMMSAAMSSMMXSAMXSAASXSAMAMMMAAMMMMMAXMXMAMMMSMMXMAMMXAAAAMXAMXSASXSMMMSAMMMMAASXMSXSAXXASMMSXSAMMMSXMASAMAMXM
MMSSXASXXMMAMAMAMXSXSSMXAAAASAMXMAMSXXAAASAMAXASXMAAMAXAMSMSSMAAXSAMMAMXSXMAXMSMSSXSXMXMSMMMAXMAMAAAAMMMAXXXMMSAXASMSSMMAXAMMMMAAMAXAMAMXXAM
MXAMMAMXASXXXASASMMMXMAMMMMMSAMXMSMMSMMSXMASXMMSXMMSMMXSMXAAAXSSXMMXSAMMMASMMMAAASAMXSAMAAAMXSMMXSMMSSSSSSMMSAXSMMMMMAASXMMMSASMSSMMSMMMSMAM
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MSSXSXSAAAAMMAMXMXSSSSXAXMMSXXXXAXMSMSMMAXXMAMASMMMSMMXXAXASXMSSMMMMSMMMMXMAMMASAMAMAMAMXMAMAMSMMMAMMMMMSMMMMSMMSSSSMAAAXSMMSXMXSXMASAMXSXXX
MAMXSAMMSMSSXAXMAXMAMMXXMXMXAMSSMXXAMXAMSMSMASAMAAAXMASMMMSMSAAXMAXXSMSMSAMMMSAMASXMAMSAAMAXAXMXMASMXXAAMMASAXMXAMAAMSMSSXXXAXSXSXSXSAMAMMXS
MASMMAMAXAAAMSXSXSMAMSMMSXSMAMAAXXXASMSMAASXMMMSSMMSMAXAXXMAMMMSSMMMXAAASAXSAMXSXMAMAAMXXSSMMXSAMAMASMMSMXAMMASMMMSAMXXMAMAMMXXAXAMAMXMXSAXA
SASASAMMSSMMXXAAASXXSAAAAAMSMMXXXSSMMMASMSMASXMAAAAAMSXMMMMAMAXAAASXMMMXMAMMAMXXASXMMSXSXAAAXMSAMAMASXMAXMXSXMSAMAMMXSMSAMXAXAMSMSMMMAMXSMSM
MASAMMSMAXSXAMMMMMASXMSMMSMSMMMSMMASXXAXMAMXMXMSXMMSAMXSAXMASMMSMMMAAXMSMMMMXMMMMMMXXAAXMSSXXAMAMXSAMASASMMMAMSMMAXXSAAMASXMMXSAAXMXMASAMXXM
MXMASAAMSSSMAMXSSMMMMAMAXXAXXAAAASAMXMAMSASMMXMMXSAMXXXSASXMSXAXAASXMMAAAAAMSXSAAMAXMMSMAXMASMXSMXMXSAMXSAASAMXXSMSMMAXSAMMSSXSMSMAAMMMXSMMS
MSMMMXSSMMMXSXMSAMXMMASMMMMMSMMMXMASMXAMMAMXMMSAAXMAMXMMMMAMMMSMSMSXMXSMXMXXAAMSXSXAMAMMMMMMAAAXMSAXMMSASXMSAMXXMXXXAAMMASAAMAMAXXSMSMAMXXAX
XAAMAMMXXAAAXAMXSMAXSASAMAAMAASMSSXMASASMSMAXAMMSSMSXMSAXSMMAAMAXAXASXXMSSSMMSMMMMMSMMMSAAXSMMMMAXSAASMASMXSXSSMMMXMMSSXAMMAMSMAMAXAAMMXMMSS
SSSMASMMSMMMSAMSMXMMMASASMMSMSMXAAXAXAMXAXSMMSSMMAAAAMXSMAMMMSSSMMMXMMAXAAXMXAXSAMXXASASXMMMASXXMAMMXMMMMMMMXXXAAXAXAMMASXSXAXMXMAMSMSMMSAMX
AAAMXMAAXAAXXAMAAAXAMXMAMXAMXMAMMMMSAAXMXMAMAXAXSMMMXMAXMAMXAAAMXSSMSSSMMXMSSMSASXMXAMASASXSMMSAMAXMSSMAAAAMMMSSMXSMSXSAMXAXMXSMMSXXXXAASAMX
MSMMXSMSSXMMSSMMSMMASMMSMSSMMSAMXAAXMAAXMSMMSSMMSMASAMXSSMSMMMSMAMMAAAMASMXAAXAMAMAMXMXSMSXAAASXSSSMAMXSSMSAXAAAXAXAXXMASXSMMASAXMAMXSMMSAMX
XXXSMAXXAAMXAMXXMXASXXMAMXAAASAMSMSMXSSSMAXSXAAMXSASAMAMAMMAMSAMXSMMSXSAMAMSSMMXAAMAASXSXXMSMMMMAMXMASXMAAAMMSSSMMMAMASAMMXAMAXXMASMMSAASAMM
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SMMMSXAAAAXMSAMXAMXMAMSMXMAAAMMAMXMMMSSMMMMMXXAMASASXMXMXMSXSSSMAMMMMMMAMMSAXXMXAMMMAMXMAXSASMSMMXXXSSSMXSXMXXASXMSAMXSSSMMXSXAAMMMMASAASMMS
SAMXASMSMSXMAMMXXMAAAAAXAXXMMMXMMMSAAMXMAXSXSMSSSMMXMSSSMXSAMAAXXXAAXMMMMAMXMSSMMSMMAMAMXMXASMASAXXXMAMMAMMMMXMAMASASAXMAASAMMSMMAAMMSMMMAXX
SAMMMMXMMXAASMSMSSMSMSMSMSSSMSMSMASMXSAXAMSASAAXMAMSAMSASAMMMSMSXSSSMMASMAMAXXAAAAXMASXMSXMXMMAMMXAMMMMMXXAAAAMAAXSMMXXXSMMASMASXSXSMXMASMMM
SMMXAAAMXSSMXAAAAMMAXAAAAAAAAAAAMMMSMSAMSMMAMMMXSAMASMSXMMSXAAAXAMXXASASXASXXSSMMASXXXMXMAMMMMXSXXMSAXXXXSSSSXSASASASXXMASXXMXAXXAASAXXMAMAM
MAMSMSMSAMXSMMMMMSXMSMSMMMSMMMSMSAAAMMAMXASXXSXAMASMMXMSXXAXSMMMXMASMMMMMXSXAMXMMAXXXXMAMAMAMXMAMAMAMSAMXXMAXAXAMAMAXAXSAMMAMMXSMMMMAMSSSSMS
MAMXMAXAMSAMXSSXXXAXSAMXXMMMMAAXSMSMMSAMSAMAXMMXSAMXMMMSXMMAMXSMAMAMAAMSMMMMMMASMASXMMSAXSSMSAASXSMAMSMSMSSMSMSAMXMMMSMMXMXMXSAAMSAMXMXAAMMM
SSXSMSXMMMMSAMXASMMMMAMSAMXASMMXXAXXXSSMMAMXMSAMXMMASAASASXMSAASXMXSSMMAAASAXXAMXSAMXMAMXAAASMMXAXMSXMAAAXAAAAMXMAAXAAAMSMXSAMSSMMMXAAMMMSAS
XAASAXXXAXXMMMAXXMSAMXMMASXMSAMMMXMMMMMXMXMAMMAMMXXAMMMXAMMXSMMMXMMAMXSSSMSASAXXXMXAXSASMXMMMMAMMMMMAMSMMMMMMSMAMSSMXSXXAAXMAMAMMASAMXSXXSAS
SMXMASASMSMAXSMSXMAMSAMSAMMASXMASAAXSXMSSSMAXSAMASMSMSSMAMSMMSXAAXSMMXAAXXMAMAMSSSSXMMAMXSMSMMAXAAASAMXMSAAAXXXXMAXXAXXSMSMSMSAXSASAXAMAXMAM
AAXMSMAAAXMXMASMASAASAMMSSMAMAMAXMXMMAAAAXMAXXMXMXAXAAAXMMXXAMXMMXMAMMMMMMMMMSMXAAAASMMMSAAXXSMSSSMSXSAXASXXMSXSAXXMMSAMAMAAASAMMASXMMMSMMMM
MMMMXMSMMMSAXMASAMSMSXMAAXMAMSMSSSXAMMMMSMMSMSSSSMMMMMSXSASMSSSMSASAMAAAAXMAAMAMXMSAMASXXMMMMMAAAXAMAMMSMXSAAMASXSMXAMMMAMSMXMAMMAMXASAMAMAS
XAAXAAAAAAMSSSMMXXXXXAMXMMXASMAXAMXSAMXXXAMXAAAAMAAXXAXMMASAMAMXSMXASXSSSSSMXSASXXMAMAMXAXMAAAAMMMASMMAAXAMMMMAMASASXSMSMMAXSAXMMASXXMASAMAX
SSSSMMSSMXSAXXXXMMMSMMSAXSMXAMXMAMAMASXSSMMMMMXMXSMSMMMMMAMAMAMXMXSMMMAMMMMAMSASXSMXMASXSMSXXSSXXMXAXMASMSSSMMASMMAMAAAASAMXMAAXXMAXXMASAMMS
AAXAMXXAASAMXMMSAXAXAASAMXMAASXMMMXSAMMMAXXAAMASAMXXAAASMMSXSASMMAXAAMMMAMMAMMAMAAXASXSAMXAMMMMMSMSMMMMXMMAAXSMSAMXMSMMSAMXXMAMXXMASXMXSXMSA
MMMMMXMAXAMXMSASMMMXMMSMMAXXMMAAXAAMAMMXMMSSMSASAMMSMSMSAAAXSAMAMAXSMMXSAMXAXMAMXMSASAMXMMASAAAAAXAXAXMASMSMMSXSMMXMXXXMASXMXMSXSMASASAXMXXM
MSAAXSMMSAMAMMAMXAMAXASAMMXSAMSMMXMSSXSASMMAAMXMAMAAAMXMMMSMMAMSMSXMASXSASMMXSASMXMAXMAMXMASMSMSSSMXSASASXMAXXMXMXMASXSMAMAXMASAAMXMMMAMSMAX
SSMSXSAAXXMASXSXSASMSASAMAAMAMMMSXXXAASAMXMSMMSSMMXSAMAXSAMXMMMXAXASAMAMXMAMAMMMAXMAMMAMAMMSAXXMMXXAXXMAMXMSSSMSXXAAXXXMASXMASMMMSSMXMSAASXM
XXAAMMMMSMSASAXAMAAXMASAMMSSMMMAMAMMMMMAMXAMXAAAAAMMAMXXMASXMMSMXMASAMXMASMMMSSSSSMAMSASXSSMMMASASASMSMSMSAAAAAMMMMMSMMMASAMSXAXAAXMAAXSMSXM
MMMMAAAXAMMASMMXMSMSAMXXXXAAASMAMXMASXSSMMSMMMSSMMMSAMSXSAMXAAAAASXSAMXSASAAXAAAAAXAMSAMAMXAMSXMASAMSXAAAMMMSMMMAAAXXMASXSMMASMMMSASMSMAXMMS
XMMXSMSMMSMAMXXXXXMAMSAMXMSSMMSMSASMSXXAXAXXMAXXMSAMXXXXMASAMSMSAMXSXMAMXSXMMMSMSMMMMMAMAMSSMMMMAMAMAMSMXMXXMXMASMMSAMXAASAMXSXXXXMXAMMAMXSX

133
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pub const INPUT: &str = include_str!("./input.txt");
type Input = &'static str;
type Output = usize;
fn parse_input(input: &'static str) -> Input {
input
}
pub fn main() {
let input = parse_input(INPUT);
println!("Part 1: {}", part_1(&input));
println!("Part 2: {}", part_2(&input));
}
fn part_1(input: &Input) -> Output {
let horizontal = input.match_indices("XMAS").count();
let horizontal_reverse = input.match_indices("SAMX").count();
let grid = input
.lines()
.map(str::chars)
.map(Iterator::collect::<Vec<_>>)
.collect::<Vec<_>>();
let grid_size = grid.len();
let mut vertical = 0;
let mut vertical_reverse = 0;
for i in 0..grid.len() {
let column = grid
.iter()
.map(|line| line.iter().skip(i).next().unwrap())
.collect::<String>();
vertical += column.match_indices("XMAS").count();
vertical_reverse += column.match_indices("SAMX").count();
}
let mut diagonal_nw_se = 0;
let mut diagonal_ne_sw = 0;
for y in 0..=(grid_size - "XMAS".len()) {
for x in 0..=(grid_size - "XMAS".len()) {
let chars = [
grid[y + 0][x + 0],
grid[y + 1][x + 1],
grid[y + 2][x + 2],
grid[y + 3][x + 3],
];
if chars == ['X', 'M', 'A', 'S'] || chars == ['S', 'A', 'M', 'X'] {
diagonal_nw_se += 1;
}
let reverse_chars = [
grid[y + 0][x + 3],
grid[y + 1][x + 2],
grid[y + 2][x + 1],
grid[y + 3][x + 0],
];
if reverse_chars == ['X', 'M', 'A', 'S'] || reverse_chars == ['S', 'A', 'M', 'X'] {
diagonal_ne_sw += 1;
}
}
}
horizontal + horizontal_reverse + vertical + vertical_reverse + diagonal_nw_se + diagonal_ne_sw
}
fn part_2(input: &Input) -> Output {
let grid = input
.lines()
.map(str::chars)
.map(Iterator::collect::<Vec<_>>)
.collect::<Vec<_>>();
let grid_size = grid.len();
let mut count = 0;
for y in 1..grid_size - 1 {
for x in 1..grid_size - 1 {
if grid[y][x] != 'A' {
continue;
}
let chars = [
grid[y - 1][x - 1],
grid[y + 1][x + 1],
grid[y - 1][x + 1],
grid[y + 1][x - 1],
];
if matches!((chars[0], chars[1]), ('S', 'M') | ('M', 'S'))
&& matches!((chars[2], chars[3]), ('S', 'M') | ('M', 'S'))
{
count += 1;
}
}
}
count
}
#[cfg(test)]
mod tests {
use super::parse_input;
const SAMPLE_INPUT: &str = r#"MMMSXXMASM
MSAMXMSMSA
AMXSXMAAMM
MSAMASMSMX
XMASAMXAMM
XXAMMXXAMA
SMSMSASXSS
SAXAMASAAA
MAMMMXMMMM
MXMXAXMASX"#;
#[test]
fn test_part_1_with_sample_solution() {
let input = parse_input(SAMPLE_INPUT);
assert_eq!(super::part_1(&input), 18);
}
#[test]
fn test_part_1_with_solution() {
let input = parse_input(super::INPUT);
assert_eq!(super::part_1(&input), 2562);
}
#[test]
fn test_part_2_with_sample_solution() {
let input = parse_input(SAMPLE_INPUT);
assert_eq!(super::part_2(&input), 9);
}
#[test]
fn test_part_2_with_solution() {
let input = parse_input(super::INPUT);
assert_eq!(super::part_2(&input), 1902);
}
}

87
flake.lock Normal file
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{
"nodes": {
"fenix": {
"inputs": {
"nixpkgs": [
"nixpkgs"
],
"rust-analyzer-src": "rust-analyzer-src"
},
"locked": {
"lastModified": 1732689334,
"narHash": "sha256-yKI1KiZ0+bvDvfPTQ1ZT3oP/nIu3jPYm4dnbRd6hYg4=",
"owner": "nix-community",
"repo": "fenix",
"rev": "a8a983027ca02b363dfc82fbe3f7d9548a8d3dce",
"type": "github"
},
"original": {
"owner": "nix-community",
"repo": "fenix",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1732837521,
"narHash": "sha256-jNRNr49UiuIwaarqijgdTR2qLPifxsVhlJrKzQ8XUIE=",
"owner": "nixos",
"repo": "nixpkgs",
"rev": "970e93b9f82e2a0f3675757eb0bfc73297cc6370",
"type": "github"
},
"original": {
"owner": "nixos",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"root": {
"inputs": {
"fenix": "fenix",
"nixpkgs": "nixpkgs",
"treefmt-nix": "treefmt-nix"
}
},
"rust-analyzer-src": {
"flake": false,
"locked": {
"lastModified": 1732633904,
"narHash": "sha256-7VKcoLug9nbAN2txqVksWHHJplqK9Ou8dXjIZAIYSGc=",
"owner": "rust-lang",
"repo": "rust-analyzer",
"rev": "8d5e91c94f80c257ce6dbdfba7bd63a5e8a03fa6",
"type": "github"
},
"original": {
"owner": "rust-lang",
"ref": "nightly",
"repo": "rust-analyzer",
"type": "github"
}
},
"treefmt-nix": {
"inputs": {
"nixpkgs": [
"nixpkgs"
]
},
"locked": {
"lastModified": 1732894027,
"narHash": "sha256-2qbdorpq0TXHBWbVXaTqKoikN4bqAtAplTwGuII+oAc=",
"owner": "numtide",
"repo": "treefmt-nix",
"rev": "6209c381904cab55796c5d7350e89681d3b2a8ef",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "treefmt-nix",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

72
flake.nix Normal file
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{
description = "A Nix-flake-based Rust development environment";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
treefmt-nix = {
url = "github:numtide/treefmt-nix";
inputs.nixpkgs.follows = "nixpkgs";
};
fenix = {
url = "github:nix-community/fenix";
inputs.nixpkgs.follows = "nixpkgs";
};
};
outputs =
{
self,
nixpkgs,
treefmt-nix,
fenix,
}:
let
supportedSystems = [
"x86_64-linux"
"aarch64-linux"
"x86_64-darwin"
"aarch64-darwin"
];
forEachSupportedSystem =
f:
nixpkgs.lib.genAttrs supportedSystems (
system:
f (
let
pkgs = import nixpkgs { inherit system; };
fenix' = (import fenix { inherit system pkgs; });
toolchain = fenix'.minimal;
in
{
inherit pkgs toolchain;
}
)
);
in
{
formatter = forEachSupportedSystem (
{ pkgs, ... }: (treefmt-nix.lib.evalModule pkgs ./treefmt.nix).config.build.wrapper
);
devShells = forEachSupportedSystem (
{ pkgs, toolchain }:
{
default = pkgs.mkShell {
LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath [
pkgs.openssl
];
PKG_CONFIG_PATH = "${pkgs.openssl.dev}/lib/pkgconfig";
packages =
[
pkgs.pkg-config
]
++ [
toolchain.cargo
toolchain.rustc
];
};
}
);
};
}

20
src/get_input.rs Normal file
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use std::{env, error::Error, fs};
use reqwest::blocking::Client;
fn main() -> Result<(), Box<dyn Error>> {
let session = env!("SESSION");
let args: Vec<_> = env::args().collect();
let day = args[1].parse::<u8>()?;
let client = Client::builder().build()?;
let request = client
.get(format!("https://adventofcode.com/2024/day/{day}/input"))
.header("Cookie", format!("session={session}"))
.build()?;
let input = client.execute(request)?.text()?;
fs::create_dir_all(format!("day{day:02}/"))?;
fs::write(format!("day{day:02}/input.txt"), input)?;
Ok(())
}

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treefmt.nix Normal file
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{ ... }:
{
projectRootFile = "flake.nix";
programs = {
nixfmt.enable = true;
rustfmt.enable = true;
};
}