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「🎉」 init(2025): day 1

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This commit is contained in:
Nawel Moussouni
2025-12-01 11:25:06 +01:00
commit 6306ab23d1
52 changed files with 2012 additions and 0 deletions
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2
2024/.gitignore vendored Normal file
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.direnv/
*/*.txt

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2024/README.md Normal file
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# 🎄 advent of code 2024
<img src="https://static.wikia.nocookie.net/59fc6b6c-9840-456b-afd2-fd775bf46bc2/scale-to-width/755" height=800 width=1200>

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2024/day01/part1.sh Executable file
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if test -f cleaned_input.txt; then
INPUT=$(cat cleaned_input.txt)
else
INPUT="3 4\n4 3\n2 5\n1 3\n3 9\n3 3"
fi
L1=$(printf "%b" "$INPUT" | awk '{print $1}' | sort -n)
L2=$(printf "%b" "$INPUT" | awk '{print $2}' | sort -n)
L1_ARRAY=($L1)
L2_ARRAY=($L2)
SUM=0
for i in ${!L1_ARRAY[@]}; do
DIFF=$(( ${L1_ARRAY[$i]} - ${L2_ARRAY[$i]} ))
DIFF=${DIFF#-} #get absolute value
SUM=$(( $SUM + $DIFF ))
#echo $SUM
done
echo $SUM

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2024/day01/part2.sh Executable file
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if test -f cleaned_input.txt; then
INPUT=$(cat cleaned_input.txt)
else
INPUT="3 4\n4 3\n2 5\n1 3\n3 9\n3 3"
fi
L1=$(printf "%b" "$INPUT" | awk '{print $1}' | sort -n)
L2=$(printf "%b" "$INPUT" | awk '{print $2}' | sort -n)
L1_ARRAY=($L1)
L2_ARRAY=($L2)
SUM=0
for i in ${!L1_ARRAY[@]}; do
for j in ${!L2_ARRAY[@]}; do
if [ "${L1_ARRAY[$i]}" = "${L2_ARRAY[$j]}" ]; then
SUM=$(( $SUM + ${L1_ARRAY[$i]} ))
fi
done
done
echo $SUM

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2024/day02/.envrc Normal file
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use flake

27
2024/day02/flake.lock generated Normal file
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{
"nodes": {
"nixpkgs": {
"flake": false,
"locked": {
"lastModified": 1733016324,
"narHash": "sha256-8qwPSE2g1othR1u4uP86NXxm6i7E9nHPyJX3m3lx7Q4=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "7e1ca67996afd8233d9033edd26e442836cc2ad6",
"type": "github"
},
"original": {
"id": "nixpkgs",
"ref": "nixos-24.05",
"type": "indirect"
}
},
"root": {
"inputs": {
"nixpkgs": "nixpkgs"
}
}
},
"root": "root",
"version": 7
}

29
2024/day02/flake.nix Normal file
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{
description = "a minimal test development environment for rust";
inputs = {
nixpkgs = {
url = "nixpkgs/nixos-24.05";
flake = false;
};
};
outputs = inputs@{ nixpkgs, ... }:
{
devShell = {
x86_64-linux = let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in pkgs.mkShell {
packages = with pkgs; [
rustc gcc
];
shellHook = ''
export CC=gcc
echo -e "\x1B[0;33mentering rust minimalist test development environment...\x1B[0m"
'';
};
};
};
}

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2024/day02/part1.rs Normal file
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use std::fs;
fn is_ordered(numbers: &[i32]) -> bool
{
let is_increasing = numbers.windows(2).all(|w| w[0] < w[1]);
let is_decreasing = numbers.windows(2).all(|w| w[0] > w[1]);
is_increasing || is_decreasing
}
fn check_range(numbers: &[i32]) -> bool
{
numbers.windows(2).all(|w| (1..=3).contains(&(w[1] - w[0]).abs()))
}
fn main() {
let content = fs::read_to_string("input.txt")
.expect("error with input file.");
let mut result = 0;
for lines in content.split('\n')
{
let values: Vec<i32> = lines.split_whitespace().map(|x| x.parse().expect("Invalid number")).collect();
if is_ordered(&values) && check_range(&values)
{
result += 1;
}
}
println!("{}", result);
}

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2024/day02/part2.rs Normal file
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use std::fs;
fn is_ordered(numbers: &[i32]) -> bool
{
let is_increasing = numbers.windows(2).all(|w| w[0] < w[1]);
let is_decreasing = numbers.windows(2).all(|w| w[0] > w[1]);
is_increasing || is_decreasing
}
fn check_range(numbers: &[i32]) -> bool
{
numbers.windows(2).all(|w| (1..=3).contains(&(w[1] - w[0]).abs()))
}
fn main() {
let content = fs::read_to_string("input.txt")
.expect("error with input file.");
let mut result = 0;
for lines in content.split('\n')
{
let values: Vec<i32> = lines.split_whitespace().map(|x| x.parse().expect("Invalid number")).collect();
if is_ordered(&values) && check_range(&values)
{
result += 1;
}
else
{
for i in 0..values.len()
{
let mut modified_values = values.to_vec();
modified_values.remove(i);
if is_ordered(&modified_values) && check_range(&modified_values)
{
result += 1;
break;
}
}
}
}
println!("{}", result);
}

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2024/day03/.envrc Normal file
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use flake

27
2024/day03/flake.lock generated Normal file
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{
"nodes": {
"nixpkgs": {
"flake": false,
"locked": {
"lastModified": 1733016324,
"narHash": "sha256-8qwPSE2g1othR1u4uP86NXxm6i7E9nHPyJX3m3lx7Q4=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "7e1ca67996afd8233d9033edd26e442836cc2ad6",
"type": "github"
},
"original": {
"id": "nixpkgs",
"ref": "nixos-24.05",
"type": "indirect"
}
},
"root": {
"inputs": {
"nixpkgs": "nixpkgs"
}
}
},
"root": "root",
"version": 7
}

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2024/day03/flake.nix Normal file
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{
description = "a minimal test development environment for ruby";
inputs = {
nixpkgs = {
url = "nixpkgs/nixos-24.05";
flake = false;
};
};
outputs = inputs@{ nixpkgs, ... }:
{
devShell = {
x86_64-linux = let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in pkgs.mkShell {
packages = with pkgs; [
gcc ruby
];
shellHook = ''
export CC=gcc
echo -e "\x1B[0;33mentering ruby minimalist test development environment...\x1B[0m"
'';
};
};
};
}

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2024/day03/part1.rb Normal file
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if File.exists?("input.txt")
file = File.open("input.txt")
file_data = file.read
file.close
else
file_data = "xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))"
end
#puts file_data
sane_data = file_data.scan(/mul\(\d+,\d+\)/)
#puts sane_data.inspect
numbers = sane_data.map do |item|
item.scan(/\d+/).map(&:to_i)
end
#puts numbers.inspect
result = 0
for mul in numbers do
result = result + mul[0] * mul[1]
end
puts result

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2024/day03/part2.rb Normal file
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if File.exists?("input.txt")
file = File.open("input.txt")
file_data = file.read
file.close
else
file_data = "xmul(2,4)&mul[3,7]!^don't()_mul(5,5)+mul(32,64](mul(11,8)undo()?mul(8,5))"
end
#puts file_data
sane_data = file_data.gsub(/don\'t\(\).*?do\(\)/m, "").scan(/mul\(\d+,\d+\)/)
#puts sane_data.inspect
numbers = sane_data.map do |item|
item.scan(/\d+/).map(&:to_i)
end
#puts numbers.inspect
result = 0
for mul in numbers do
result = result + mul[0] * mul[1]
end
puts result

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2024/day04/.envrc Normal file
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use flake

27
2024/day04/flake.lock generated Normal file
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{
"nodes": {
"nixpkgs": {
"flake": false,
"locked": {
"lastModified": 1733120037,
"narHash": "sha256-En+gSoVJ3iQKPDU1FHrR6zIxSLXKjzKY+pnh9tt+Yts=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "f9f0d5c5380be0a599b1fb54641fa99af8281539",
"type": "github"
},
"original": {
"id": "nixpkgs",
"ref": "nixos-24.11",
"type": "indirect"
}
},
"root": {
"inputs": {
"nixpkgs": "nixpkgs"
}
}
},
"root": "root",
"version": 7
}

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2024/day04/flake.nix Normal file
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{
description = "a test development environment for python";
inputs = {
nixpkgs = {
url = "nixpkgs/nixos-24.11";
flake = false;
};
};
outputs = inputs@{ nixpkgs, ... }:
{
devShell = {
x86_64-linux = let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in pkgs.mkShell {
packages = with pkgs; [
gcc python3
];
shellHook = ''
echo -e "\x1B[0;33mentering python test development environment...\x1B[0m"
'';
};
};
};
}

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2024/day04/part1.py Normal file
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# sorry i gave up.
import os
import os.path
target = "XMAS"
def count_horizontal(grid):
res = 0
for line in grid:
res += line.count(target)
res += line[::-1].count(target)
return (res)
def count_vertical(grid):
res = 0
for i in range(len(grid[0])):
res += (''.join([s[i] for s in grid if len(s) > i])).count(target)
res += (''.join([s[i] for s in grid if len(s) > i]))[::-1].count(target)
return (res)
def count_diagonal_left(grid):
res = 0
for i in range(len(grid)):
res += (''.join([grid[x + i][x] for x in range(min(len(grid) - i, len(grid[0])))])).count(target)
res += (''.join([grid[x + i][x] for x in range(min(len(grid) - i, len(grid[0])))]))[::-1].count(target)
for i in range(1,len(grid[0])):
res += (''.join([grid[x][x + i] for x in range(min(len(grid), len(grid[0]) - i))])).count(target)
res += (''.join([grid[x][x + i] for x in range(min(len(grid), len(grid[0]) - i))]))[::-1].count(target)
return (res)
def count_diagonal_right(grid):
res = 0
for i in range(len(grid)):
res += (''.join([(grid[x + i][::-1])[x] for x in range(min(len(grid) - i, len(grid[0])))])).count(target)
res += (''.join([(grid[x + i][::-1])[x] for x in range(min(len(grid) - i, len(grid[0])))]))[::-1].count(target)
for i in range(1,len(grid[0])):
res += (''.join([(grid[x][::-1])[x + i] for x in range(min(len(grid), len(grid[0]) - i))])).count(target)
res += (''.join([(grid[x][::-1])[x + i] for x in range(min(len(grid), len(grid[0]) - i))]))[::-1].count(target)
return (res)
def main():
file_path = "./input.txt"
if (os.path.isfile(file_path)):
content = open(file_path, "r").read()
else:
content = "MMMSXXMASM\nMSAMXMSMSA\nAMXSXMAAMM\nMSAMASMSMX\nXMASAMXAMM\nXXAMMXXAMA\nSMSMSASXSS\nSAXAMASAAA\nMAMMMXMMMM\nMXMXAXMASX"
grid = content.split('\n')
print(count_horizontal(grid) + count_vertical(grid) + count_diagonal_left(grid) + count_diagonal_right(grid))
if __name__ == '__main__':
main()

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# sorry i gave up.
import os
import os.path
target = "XMAS"
def check_x(grid, x, y):
if (x not in range(1, len(grid[0]) - 1) or y not in range(1, len(grid) - 1)):
return (0)
str = grid[y - 1][x - 1] + grid[y + 1][x + 1]
if (str not in "SMS"):
return (0)
str = grid[y + 1][x - 1] + grid[y - 1][x + 1]
if (str not in "SMS"):
return (0)
return (1)
def count_xmas(grid):
res = 0
for y in range(len(grid)):
for x in range(len(grid[0])):
if (grid[y][x] == 'A'):
res += check_x(grid, x, y)
return (res)
def main():
file_path = "./input.txt"
if (os.path.isfile(file_path)):
content = open(file_path, "r").read()
else:
content = "MMMSXXMASM\nMSAMXMSMSA\nAMXSXMAAMM\nMSAMASMSMX\nXMASAMXAMM\nXXAMMXXAMA\nSMSMSASXSS\nSAXAMASAAA\nMAMMMXMMMM\nMXMXAXMASX"
grid = content.split('\n')
print(count_xmas(grid))
if __name__ == '__main__':
main()

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2024/day05/.envrc Normal file
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use flake

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2024/day05/flake.lock generated Normal file
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{
"nodes": {
"nixpkgs": {
"flake": false,
"locked": {
"lastModified": 1733261153,
"narHash": "sha256-eq51hyiaIwtWo19fPEeE0Zr2s83DYMKJoukNLgGGpek=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "b681065d0919f7eb5309a93cea2cfa84dec9aa88",
"type": "github"
},
"original": {
"id": "nixpkgs",
"ref": "nixos-24.11",
"type": "indirect"
}
},
"root": {
"inputs": {
"nixpkgs": "nixpkgs"
}
}
},
"root": "root",
"version": 7
}

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2024/day05/flake.nix Normal file
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{
description = "a test development environment for python";
inputs = {
nixpkgs = {
url = "nixpkgs/nixos-24.11";
flake = false;
};
};
outputs = inputs@{ nixpkgs, ... }:
{
devShell = {
x86_64-linux = let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in pkgs.mkShell {
packages = with pkgs; [
gcc python3
];
shellHook = ''
echo -e "\x1B[0;33mentering python test development environment...\x1B[0m"
'';
};
};
};
}

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2024/day05/part1.py Normal file
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import os
import os.path
def main():
res = 0
valid = 1
file_path = "./input.txt"
if (os.path.isfile(file_path)):
content = open(file_path, "r").read()
else:
content = "47|53\n97|13\n97|61\n97|47\n75|29\n61|13\n75|53\n29|13\n97|29\n53|29\n61|53\n97|53\n61|29\n47|13\n75|47\n97|75\n47|61\n75|61\n47|29\n75|13\n53|13\n\n75,47,61,53,29\n97,61,53,29,13\n75,29,13\n75,97,47,61,53\n61,13,29\n97,13,75,29,47"
grid = content.split('\n')
pages_part = grid[:grid.index("")]
for line in grid[grid.index("") + 1:]:
valid = 1
for num in line.split(','):
for page in pages_part:
if num in page:
if page.split('|')[0] in line and page.split('|')[1] in line:
if page.split('|')[1] not in line.split(',')[line.split(',').index(page.split('|')[0]):]:
valid = 0
if valid:
res += int(line.split(',')[len(line.split(',')) // 2])
print(res)
if __name__ == '__main__':
main()

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import os
import os.path
def is_incorrect(line, pages_part):
r = 0
for num in line.split(','):
for page in pages_part:
if num in page:
if page.split('|')[0] in line and page.split('|')[1] in line:
if page.split('|')[1] not in line.split(',')[line.split(',').index(page.split('|')[0]):]:
r = 1
return (r)
def main():
res = 0
valid = 1
file_path = "./input.txt"
if (os.path.isfile(file_path)):
content = open(file_path, "r").read()
else:
content = "47|53\n97|13\n97|61\n97|47\n75|29\n61|13\n75|53\n29|13\n97|29\n53|29\n61|53\n97|53\n61|29\n47|13\n75|47\n97|75\n47|61\n75|61\n47|29\n75|13\n53|13\n\n75,47,61,53,29\n97,61,53,29,13\n75,29,13\n75,97,47,61,53\n61,13,29\n97,13,75,29,47"
grid = content.split('\n')
pages_part = grid[:grid.index("")]
for line in grid[grid.index("") + 1:]:
if not is_incorrect(line, pages_part):
continue
while is_incorrect(line, pages_part):
for num in line.split(','):
for page in pages_part:
if num in page:
if page.split('|')[0] in line and page.split('|')[1] in line:
if page.split('|')[1] not in line.split(',')[line.split(',').index(page.split('|')[0]):]:
new = line.split(',')
i1 = new.index(page.split('|')[0])
i2 = new.index(page.split('|')[1])
new[i1], new[i2] = new[i2], new[i1]
line = ','.join(new)
res += int(line.split(',')[len(line.split(',')) // 2])
print(res)
if __name__ == '__main__':
main()

1
2024/day06/.envrc Normal file
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use flake

59
2024/day06/flake.lock generated Normal file
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{
"nodes": {
"flake-utils": {
"inputs": {
"systems": "systems"
},
"locked": {
"lastModified": 1731533236,
"narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
"type": "github"
},
"original": {
"id": "flake-utils",
"type": "indirect"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1733261153,
"narHash": "sha256-eq51hyiaIwtWo19fPEeE0Zr2s83DYMKJoukNLgGGpek=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "b681065d0919f7eb5309a93cea2cfa84dec9aa88",
"type": "github"
},
"original": {
"id": "nixpkgs",
"ref": "nixos-24.11",
"type": "indirect"
}
},
"root": {
"inputs": {
"flake-utils": "flake-utils",
"nixpkgs": "nixpkgs"
}
},
"systems": {
"locked": {
"lastModified": 1681028828,
"narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
"owner": "nix-systems",
"repo": "default",
"rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
"type": "github"
},
"original": {
"owner": "nix-systems",
"repo": "default",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

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2024/day06/flake.nix Normal file
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{
description = "a development environment for the c programming language";
inputs = {
nixpkgs.url = "nixpkgs/nixos-24.11";
};
outputs = { self, flake-utils, nixpkgs, ... }:
flake-utils.lib.eachDefaultSystem(system:
let
pkgs = nixpkgs.legacyPackages.${system};
in
{
devShells.default = pkgs.mkShell {
packages = with pkgs; [ clang gcc valgrind gdb ];
hardeningDisable = [ "all" ];
buildInputs = with pkgs; [];
shellHook = ''
echo -e "\x1B[0;33mentering c environment...\x1B[0m"
'';
};
});
}

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2024/day06/part1.c Normal file
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#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
static int free_list(char **result, int j)
{
while (j)
{
free(result[j]);
j--;
}
return (1);
}
static int word_counter(const char *str, char ch)
{
int i;
int c;
int bool_c;
i = 0;
c = 0;
bool_c = 1;
while (str[i])
{
if (str[i] == ch)
{
bool_c = 1;
}
else if (str[i] != ch && bool_c)
{
c++;
bool_c = 0;
}
i++;
}
return (c);
}
static int per_word_fill(char **result, const char *str, char ch)
{
int i;
int j;
int c;
i = 0;
j = 0;
while (str[i])
{
c = 0;
while (str[i] != ch && str[i])
{
c++;
i++;
}
if (c != 0)
{
result[j] = calloc(sizeof(char), c + 1);
if (result[j++] == NULL)
return (free_list(result, j - 2));
}
if (str[i])
i++;
}
result[j] = NULL;
return (0);
}
static void ft_split_resolver(char **result, const char *str, char ch)
{
int i;
int j;
int wi;
int bool_w;
i = 0;
j = 0;
wi = 0;
bool_w = 0;
while (str[i])
{
if (str[i] == ch && bool_w)
{
bool_w = 0;
wi = 0;
j++;
}
else if (str[i] != ch)
{
bool_w = 1;
result[j][wi] = str[i];
wi++;
}
i++;
}
}
char **ft_split(const char *str, char c)
{
char **result;
result = malloc(sizeof(char *) * (word_counter(str, c) + 1));
if (result == NULL)
return (NULL);
if (per_word_fill(result, str, c))
return (NULL);
ft_split_resolver(result, str, c);
return (result);
}
int main(void)
{
char *content, **grid;
int fd;
if ((fd = open("./input.txt", O_RDONLY)) > 0)
{
content = calloc(sizeof(char), 17030);
read(fd, content, 17029);
}
else
{
content = "....#.....\n.........#\n..........\n..#.......\n.......#..\n..........\n.#..^.....\n........#.\n#.........\n......#...";
}
grid = ft_split(content, '\n');
//for (int i = 0; grid[i]; i++)
// printf("%s\n", grid[i]);
int res, x, y = 0;
for (int i = 0; grid[i]; i++)
{
for (int j = 0; grid[i][j]; j++)
{
if (grid[i][j] == '^')
{
x = j;
y = i;
goto next;
}
}
}
next:
for(;;)
{
switch (grid[y][x]) {
case '^':
if (y == 0 || y == (strlen(grid[0]) - 1))
{
res++;
printf("%d\n", res);
return (0);
}
if (grid[y - 1][x] == '#')
grid[y][x] = '>';
else
{
res += grid[y - 1][x] == '.';
grid[y - 1][x] = '^';
grid[y][x] = 'X';
y--;
}
break;
case '>':
if (x == 0 || x == (strlen(grid[0]) - 1))
{
res++;
printf("%d\n", res);
return (0);
}
if (grid[y][x + 1] == '#')
{
grid[y][x] = 'v';
}
else
{
res += grid[y][x + 1] == '.';
grid[y][x + 1] = '>';
grid[y][x] = 'X';
x++;
}
break;
case 'v':
if (y == 0 || y == (strlen(grid[0]) - 1))
{
res++;
printf("%d\n", res);
return (0);
}
if (grid[y + 1][x] == '#')
{
grid[y][x] = '<';
}
else
{
res += grid[y + 1][x] == '.';
grid[y + 1][x] = 'v';
grid[y][x] = 'X';
y++;
}
break;
case '<':
if (x == 0 || x == (strlen(grid[0] - 1)))
{
res++;
printf("%d\n", res);
return (0);
}
if (grid[y][x - 1] == '#')
{
grid[y][x] = '^';
}
else
{
res += grid[y][x - 1] == '.';
grid[y][x - 1] = '<';
grid[y][x] = 'X';
x--;
}
break;
}
}
}

399
2024/day06/part2.c Normal file
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@@ -0,0 +1,399 @@
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
static int free_list(char **result, int j)
{
while (j)
{
free(result[j]);
j--;
}
return (1);
}
static int word_counter(const char *str, char ch)
{
int i;
int c;
int bool_c;
i = 0;
c = 0;
bool_c = 1;
while (str[i])
{
if (str[i] == ch)
{
bool_c = 1;
}
else if (str[i] != ch && bool_c)
{
c++;
bool_c = 0;
}
i++;
}
return (c);
}
static int per_word_fill(char **result, const char *str, char ch)
{
int i;
int j;
int c;
i = 0;
j = 0;
while (str[i])
{
c = 0;
while (str[i] != ch && str[i])
{
c++;
i++;
}
if (c != 0)
{
result[j] = calloc(sizeof(char), c + 1);
if (result[j++] == NULL)
return (free_list(result, j - 2));
}
if (str[i])
i++;
}
result[j] = NULL;
return (0);
}
static void ft_split_resolver(char **result, const char *str, char ch)
{
int i;
int j;
int wi;
int bool_w;
i = 0;
j = 0;
wi = 0;
bool_w = 0;
while (str[i])
{
if (str[i] == ch && bool_w)
{
bool_w = 0;
wi = 0;
j++;
}
else if (str[i] != ch)
{
bool_w = 1;
result[j][wi] = str[i];
wi++;
}
i++;
}
}
char **ft_split(const char *str, char c)
{
char **result;
result = malloc(sizeof(char *) * (word_counter(str, c) + 1));
if (result == NULL)
return (NULL);
if (per_word_fill(result, str, c))
return (NULL);
ft_split_resolver(result, str, c);
return (result);
}
typedef struct s_state{
int x;
int y;
char direction;
} t_state;
typedef struct s_coord{
int x;
int y;
} t_coord;
char **cpy_grid(char **grid)
{
char **new;
new = calloc(sizeof(char *), 131);
for (int i = 0; grid[i]; i++)
new[i] = strdup(grid[i]);
return (new);
}
int has_visited(t_state *visited, int count, int x, int y, char direction) {
for (int i = 0; i < count; i++)
if (visited[i].x == x && visited[i].y == y && visited[i].direction == direction)
return (1);
return (0);
}
int add_solution(t_coord *solutions, int count, int x, int y)
{
for (int i = 0; i < count; i++)
if (solutions[i].x == x && solutions[i].y == y)
return (0);
return (1);
}
int check_ray(char **old_grid, int x, int y, char dir)
{
int old_x = x;
int old_y = y;
int c = 0;
char **grid = cpy_grid(old_grid);
t_state *visited = calloc(sizeof(t_state), (strlen(grid[0]) * strlen(grid[0])) * 4);
int visited_index = 0;
switch (dir)
{
case '^':
if (grid[y][x - 1] == '^')
grid[y - 1][x - 1] = '^';
grid[y][x - 1] = '#';
break;
case '>':
if (grid[y - 1][x] == '^')
grid[y - 2][x] = '^';
grid[y - 1][x] = '#';
break;
case 'v':
if (grid[y][x + 1] == '^')
grid[y - 1][x + 1] = '^';
grid[y][x + 1] = '#';
break;
case '<':
if (grid[y][x] == '^')
grid[y][x] = '^';
grid[y + 1][x] = '#';
break;
}
for (int i = 0; grid[i]; i++)
{
for (int j = 0; grid[i][j]; j++)
{
if (grid[i][j] == '^')
{
x = j;
y = i;
goto next_check_ray;
}
}
}
next_check_ray:
for(;;)
{
switch (grid[y][x])
{
case '^':
if (y == 0 || y == (strlen(grid[0]) - 1))
return (0);
if (grid[y - 1][x] == '#')
grid[y][x] = '>';
else
{
grid[y - 1][x] = '^';
y--;
}
break;
case '>':
if (x == 0 || x == (strlen(grid[0]) - 1))
return (0);
if (grid[y][x + 1] == '#')
grid[y][x] = 'v';
else
{
grid[y][x + 1] = '>';
x++;
}
break;
case 'v':
if (y == 0 || y == (strlen(grid[0]) - 1))
return (0);
if (grid[y + 1][x] == '#')
grid[y][x] = '<';
else
{
grid[y + 1][x] = 'v';
y++;
}
break;
case '<':
if (x == 0 || x == (strlen(grid[0] - 1)))
return (0);
if (grid[y][x - 1] == '#')
grid[y][x] = '^';
else
{
grid[y][x - 1] = '<';
x--;
}
break;
}
if (has_visited(visited, visited_index, x, y, grid[y][x]))
return (1);
visited[visited_index++] = (t_state){x, y, grid[y][x]};
}
}
int main(void)
{
char *content, **grid;
int fd;
if ((fd = open("./input.txt", O_RDONLY)) > 0)
{
content = calloc(sizeof(char), 17030);
read(fd, content, 17029);
}
else
{
content = "....#.....\n.........#\n..........\n..#.......\n.......#..\n..........\n.#..^.....\n........#.\n#.........\n......#...";
}
grid = ft_split(content, '\n');
char **clean_grid = cpy_grid(grid);
t_coord *solutions = calloc(sizeof(t_coord), strlen(grid[0]) * strlen(grid[0]));
int solutions_index = 0;
int x, y = 0;
for (int i = 0; grid[i]; i++)
{
for (int j = 0; grid[i][j]; j++)
{
if (grid[i][j] == '^')
{
x = j;
y = i;
goto next;
}
}
}
next:
for(;;)
{
switch (grid[y][x]) {
case '^':
grid[y][x] = '+';
while (y != 0 && y != (strlen(grid[0]) - 1) && grid[y - 1][x] != '#')
{
if (grid[y][x] == '.')
grid[y][x] = '^';
else
grid[y][x] = '+';
if(check_ray(clean_grid, x, y, '>'))
if (add_solution(solutions, solutions_index, x, y - 1))
solutions[solutions_index++] = (t_coord){x, y - 1};
//res += check_ray(clean_grid, x, y, '>');
y--;
}
if (y == 0 || y == (strlen(grid[0]) - 1))
{
printf("%d\n", solutions_index);
return (0);
}
if (grid[y - 1][x] == '#')
grid[y][x] = '>';
break;
case '>':
grid[y][x] = '+';
while (x != 0 && x != (strlen(grid[0]) - 1) && grid[y][x + 1] != '#')
{
if (grid[y][x] == '.')
grid[y][x] = '>';
else
grid[y][x] = '+';
if(check_ray(clean_grid, x, y, 'v'))
if (add_solution(solutions, solutions_index, x + 1, y))
solutions[solutions_index++] = (t_coord){x + 1, y};
//res += check_ray(clean_grid, x, y, 'v');
x++;
}
if (x == 0 || x == (strlen(grid[0]) - 1))
{
printf("%d\n", solutions_index);
return (0);
}
if (grid[y][x + 1] == '#')
{
grid[y][x] = 'v';
}
break;
case 'v':
grid[y][x] = '+';
while (y != 0 && y != (strlen(grid[0]) - 1) && grid[y + 1][x] != '#')
{
if (grid[y][x] == '.')
grid[y][x] = 'v';
else
grid[y][x] = '+';
if(check_ray(clean_grid, x, y, '<'))
if (add_solution(solutions, solutions_index, x, y + 1))
solutions[solutions_index++] = (t_coord){x, y + 1};
//res += check_ray(clean_grid, x, y, '<');
y++;
}
if (y == 0 || y == (strlen(grid[0]) - 1))
{
printf("%d\n", solutions_index);
return (0);
}
if (grid[y + 1][x] == '#')
{
grid[y][x] = '<';
}
break;
case '<':
grid[y][x] = '+';
while (x != 0 && x != (strlen(grid[0]) - 1) && grid[y][x - 1] != '#')
{
if (grid[y][x] == '.')
grid[y][x] = '<';
else
grid[y][x] = '+';
if(check_ray(clean_grid, x, y, '^'))
if (add_solution(solutions, solutions_index, x - 1, y))
solutions[solutions_index++] = (t_coord){x - 1, y};
//res += check_ray(clean_grid, x, y, '^');
x--;
}
if (x == 0 || x == (strlen(grid[0] - 1)))
{
printf("%d\n", solutions_index);
return (0);
}
if (grid[y][x - 1] == '#')
{
grid[y][x] = '^';
}
break;
}
printf("i am alive %d %d\n", x, y);
}
}

1
2024/day07/.envrc Normal file
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@@ -0,0 +1 @@
use flake

27
2024/day07/flake.lock generated Normal file
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@@ -0,0 +1,27 @@
{
"nodes": {
"nixpkgs": {
"flake": false,
"locked": {
"lastModified": 1733220138,
"narHash": "sha256-Yh5XZ9yVurrcYdNTSWxYgW4+EJ0pcOqgM1043z9JaRc=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "bcb68885668cccec12276bbb379f8f2557aa06ce",
"type": "github"
},
"original": {
"id": "nixpkgs",
"ref": "nixos-24.05",
"type": "indirect"
}
},
"root": {
"inputs": {
"nixpkgs": "nixpkgs"
}
}
},
"root": "root",
"version": 7
}

29
2024/day07/flake.nix Normal file
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@@ -0,0 +1,29 @@
{
description = "a minimal test development environment for ruby";
inputs = {
nixpkgs = {
url = "nixpkgs/nixos-24.05";
flake = false;
};
};
outputs = inputs@{ nixpkgs, ... }:
{
devShell = {
x86_64-linux = let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in pkgs.mkShell {
packages = with pkgs; [
gcc ruby
];
shellHook = ''
export CC=gcc
echo -e "\x1B[0;33mentering ruby minimalist test development environment...\x1B[0m"
'';
};
};
};
}

60
2024/day07/part1.rb Normal file
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@@ -0,0 +1,60 @@
if File.exists?("input.txt")
file = File.open("input.txt")
file_data = file.read
file.close
else
file_data = "190: 10 19\n3267: 81 40 27\n83: 17 5\n156: 15 6\n7290: 6 8 6 15\n161011: 16 10 13\n192: 17 8 14\n21037: 9 7 18 13\n292: 11 6 16 20"
end
def eval_left_to_right(expression)
tokens = expression.split(/(\+|\*)/).map(&:strip)
result = tokens.shift.to_i
until tokens.empty?
operator = tokens.shift
operand = tokens.shift.to_i
result = result.send(operator, operand)
end
result
end
#puts file_data
data_array = file_data.split("\n")
results = []
values = []
for line in data_array do
res, val = line.split(":").map(&:strip)
res = res.to_i
val = val.split.map(&:to_i)
results.push(res)
values.push(val)
end
puts results.inspect
puts values.inspect
res = 0
operations = ['+', '*']
results.each_with_index do |result, index|
puts "\nindex: #{index} | #{result} : #{values[index]}"
combinations = operations.repeated_permutation(values[index].length - 1).to_a
combinations.each do |comb|
expr = values[index].zip(comb).flatten.compact.join
puts "#{expr} = #{eval_left_to_right(expr)}"
if eval_left_to_right(expr) == result
puts "#{result}"
res += result
break
end
end
end
puts res

64
2024/day07/part2.rb Normal file
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if File.exists?("input.txt")
file = File.open("input.txt")
file_data = file.read
file.close
else
file_data = "190: 10 19\n3267: 81 40 27\n83: 17 5\n156: 15 6\n7290: 6 8 6 15\n161011: 16 10 13\n192: 17 8 14\n21037: 9 7 18 13\n292: 11 6 16 20"
end
def eval_left_to_right(expression)
tokens = expression.split(/(\+|\*|\|\|)/).map(&:strip)
result = tokens.shift.to_i
until tokens.empty?
operator = tokens.shift
operand = tokens.shift.to_i
if (operator == '||')
result = (result.to_s + operand.to_s).to_i
else
result = result.send(operator, operand)
end
end
result
end
#puts file_data
data_array = file_data.split("\n")
results = []
values = []
for line in data_array do
res, val = line.split(":").map(&:strip)
res = res.to_i
val = val.split.map(&:to_i)
results.push(res)
values.push(val)
end
puts results.inspect
puts values.inspect
res = 0
operations = ['+', '*', '||']
results.each_with_index do |result, index|
#puts "\nindex: #{index} | #{result} : #{values[index]}"
combinations = operations.repeated_permutation(values[index].length - 1).to_a
combinations.each do |comb|
expr = values[index].zip(comb).flatten.compact.join
#puts "#{expr} = #{eval_left_to_right(expr)}"
if eval_left_to_right(expr) == result
#puts "#{result}"
res += result
break
end
end
end
puts res

1
2024/day08/.envrc Normal file
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@@ -0,0 +1 @@
use flake

27
2024/day08/flake.lock generated Normal file
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@@ -0,0 +1,27 @@
{
"nodes": {
"nixpkgs": {
"flake": false,
"locked": {
"lastModified": 1733384649,
"narHash": "sha256-K5DJ2LpPqht7K76bsxetI+YHhGGRyVteTPRQaIIKJpw=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "190c31a89e5eec80dd6604d7f9e5af3802a58a13",
"type": "github"
},
"original": {
"id": "nixpkgs",
"ref": "nixos-24.05",
"type": "indirect"
}
},
"root": {
"inputs": {
"nixpkgs": "nixpkgs"
}
}
},
"root": "root",
"version": 7
}

29
2024/day08/flake.nix Normal file
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@@ -0,0 +1,29 @@
{
description = "a minimal test development environment for ruby";
inputs = {
nixpkgs = {
url = "nixpkgs/nixos-24.05";
flake = false;
};
};
outputs = inputs@{ nixpkgs, ... }:
{
devShell = {
x86_64-linux = let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in pkgs.mkShell {
packages = with pkgs; [
gcc ruby
];
shellHook = ''
export CC=gcc
echo -e "\x1B[0;33mentering ruby minimalist test development environment...\x1B[0m"
'';
};
};
};
}

47
2024/day08/part1.rb Normal file
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@@ -0,0 +1,47 @@
require 'set'
if File.exists?("input.txt")
file = File.open("input.txt")
file_data = file.read
file.close
else
file_data = "............\n........0...\n.....0......\n.......0....\n....0.......\n......A.....\n............\n............\n........A...\n.........A..\n............\n............"
end
antennas = []
map = file_data.split("\n")
map.each_with_index do |row, r|
row.chars.each_with_index do |char, c|
antennas << [c, r, char] if char != '.'
end
end
antinodes = Set.new
antennas.each_with_index do |(x1, y1, value1), i|
antennas.each_with_index do |(x2, y2, value2), j|
next if i == j
next unless value1 == value2
x_dir = x2 - x1
y_dir = y2 - y1
[1, -1].each do |dir|
if dir > 0
x_point = x1 - x_dir * dir
else
x_point = x2 - x_dir * dir
end
if dir > 0
y_point = y1 - y_dir * dir
else
y_point = y2 - y_dir * dir
end
antinodes.add([x_point, y_point]) if (x_point.between?(0, map.size - 1) && y_point.between?(0, map[0].size - 1))
end
end
end
puts antinodes.size

47
2024/day08/part2.rb Normal file
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@@ -0,0 +1,47 @@
require 'set'
if File.exists?("input.txt")
file = File.open("input.txt")
file_data = file.read
file.close
else
file_data = "............\n........0...\n.....0......\n.......0....\n....0.......\n......A.....\n............\n............\n........A...\n.........A..\n............\n............"
end
antennas = []
map = file_data.split("\n")
map.each_with_index do |row, r|
row.chars.each_with_index do |char, c|
antennas << [c, r, char] if char != '.'
end
end
antinodes = Set.new
antennas.each_with_index do |(x1, y1, value1), i|
antennas.each_with_index do |(x2, y2, value2), j|
next if i == j
next unless value1 == value2
x_dir = x2 - x1
y_dir = y2 - y1
[1, -1].each do |dir|
x_point = x1
y_point = y1
loop do
x_point = x_point - x_dir * dir
y_point = y_point - y_dir * dir
if (!x_point.between?(0, map.size - 1) || !y_point.between?(0, map[0].size - 1))
break
end
antinodes.add([x_point, y_point])
end
end
end
end
puts antinodes.size

1
2024/day09/.envrc Normal file
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@@ -0,0 +1 @@
use flake

27
2024/day09/flake.lock generated Normal file
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@@ -0,0 +1,27 @@
{
"nodes": {
"nixpkgs": {
"flake": false,
"locked": {
"lastModified": 1733412085,
"narHash": "sha256-FillH0qdWDt/nlO6ED7h4cmN+G9uXwGjwmCnHs0QVYM=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "4dc2fc4e62dbf62b84132fe526356fbac7b03541",
"type": "github"
},
"original": {
"id": "nixpkgs",
"ref": "nixos-24.11",
"type": "indirect"
}
},
"root": {
"inputs": {
"nixpkgs": "nixpkgs"
}
}
},
"root": "root",
"version": 7
}

28
2024/day09/flake.nix Normal file
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@@ -0,0 +1,28 @@
{
description = "a test development environment for python";
inputs = {
nixpkgs = {
url = "nixpkgs/nixos-24.11";
flake = false;
};
};
outputs = inputs@{ nixpkgs, ... }:
{
devShell = {
x86_64-linux = let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in pkgs.mkShell {
packages = with pkgs; [
gcc python3
];
shellHook = ''
echo -e "\x1B[0;33mentering python test development environment...\x1B[0m"
'';
};
};
};
}

39
2024/day09/part1.py Normal file
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@@ -0,0 +1,39 @@
import os
import os.path
def checksum(hdd):
res = 0
for i in range(len(hdd)):
if hdd[i] != '.':
res += i * int(hdd[i])
return (res)
def main():
file_path = "./input.txt"
if (os.path.isfile(file_path)):
content = open(file_path, "r").read()
else:
content = "2333133121414131402"
hdd = []
for i in range(len(content)):
if i % 2 == 0:
hdd.extend([i // 2 for x in range(int(content[i]))])
else:
hdd.extend(['.' for x in range(int(content[i]))])
print(hdd)
for i in range(len(hdd) - 1, -1, -1):
for j in range(len(hdd[:i])):
if (hdd[j] == '.'):
hdd[i], hdd[j] = hdd[j], hdd[i]
break
print(checksum(hdd))
if __name__ == '__main__':
main()

56
2024/day09/part2.py Normal file
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import os
import os.path
def checksum(hdd):
res = 0
for i in range(len(hdd)):
if hdd[i] != '.':
res += i * int(hdd[i])
return (res)
def has_free_size(hdd, j, size):
block_size = 0
while hdd[j] == '.':
block_size += 1
if block_size == size:
return True
j += 1
return False
def main():
file_path = "./input.txt"
if os.path.isfile(file_path):
content = open(file_path, "r").read()
else:
content = "2333133121414131402"
hdd = []
for i in range(len(content)):
if i % 2 == 0:
hdd.extend([i // 2 for x in range(int(content[i]))])
else:
hdd.extend(['.' for x in range(int(content[i]))])
print(hdd)
block_len = 1
for i in range(len(hdd) - 1, -1, -1):
if '.' not in [hdd[i], hdd[i - 1]] and int(hdd[i - 1]) == int(hdd[i]):
block_len += 1
continue
for j in range(len(hdd[:i])):
if has_free_size(hdd, j, block_len):
for k in range(block_len):
hdd[i + k], hdd[j + k] = hdd[j + k], hdd[i + k]
block_len = 1
break
block_len = 1
print(checksum(hdd))
if __name__ == '__main__':
main()

1
2024/day10/.envrc Normal file
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use flake

27
2024/day10/flake.lock generated Normal file
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{
"nodes": {
"nixpkgs": {
"flake": false,
"locked": {
"lastModified": 1733730953,
"narHash": "sha256-dlK7n82FEyZlHH7BFHQAM5tua+lQO1Iv7aAtglc1O5s=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "7109b680d161993918b0a126f38bc39763e5a709",
"type": "github"
},
"original": {
"id": "nixpkgs",
"ref": "nixos-24.05",
"type": "indirect"
}
},
"root": {
"inputs": {
"nixpkgs": "nixpkgs"
}
}
},
"root": "root",
"version": 7
}

29
2024/day10/flake.nix Normal file
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{
description = "a minimal test development environment for ruby";
inputs = {
nixpkgs = {
url = "nixpkgs/nixos-24.05";
flake = false;
};
};
outputs = inputs@{ nixpkgs, ... }:
{
devShell = {
x86_64-linux = let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in pkgs.mkShell {
packages = with pkgs; [
gcc ruby
];
shellHook = ''
export CC=gcc
echo -e "\x1B[0;33mentering ruby minimalist test development environment...\x1B[0m"
'';
};
};
};
}

52
2024/day10/part1.rb Normal file
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require 'set'
def find_trailheads(grid)
trailheads = []
grid.each_with_index do |row, y|
row.each_char.with_index do |height, x|
trailheads << [x, y] if height == '0'
end
end
trailheads
end
def find_path(grid, x, y, visited)
score = 0
visited.add([x, y])
return 1 if grid[y][x] == '9'
[[-1, 0], [1, 0], [0, -1], [0, 1]].each do |x_dir, y_dir|
nx, ny = x + x_dir, y + y_dir
next unless ny.between?(0, grid.size - 1) && nx.between?(0, grid[0].length - 1)
next if visited.include?([nx, ny])
if grid[ny][nx].to_i == grid[y][x].to_i + 1
score += find_path(grid, nx, ny, visited)
end
end
score
end
if File.exists?("input.txt")
file = File.open("input.txt")
file_data = file.read
file.close
else
file_data = "89010123\n78121874\n87430965\n96549874\n45678903\n32019012\n01329801\n10456732"
end
grid = file_data.split("\n")
trailheads = find_trailheads(grid)
result = 0
trailheads.each do |trailhead|
result += find_path(grid, trailhead[0], trailhead[1], Set.new)
#puts result
end
puts "result : #{result}"

54
2024/day10/part2.rb Normal file
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require 'set'
def find_trailheads(grid)
trailheads = []
grid.each_with_index do |row, y|
row.each_char.with_index do |height, x|
trailheads << [x, y] if height == '0'
end
end
trailheads
end
def find_path(grid, x, y, visited)
score = 0
return 1 if grid[y][x] == '9'
visited.add([x, y])
[[-1, 0], [1, 0], [0, -1], [0, 1]].each do |x_dir, y_dir|
nx, ny = x + x_dir, y + y_dir
next unless ny.between?(0, grid.size - 1) && nx.between?(0, grid[0].length - 1)
next if visited.include?([nx, ny])
if grid[ny][nx].to_i == grid[y][x].to_i + 1
score += find_path(grid, nx, ny, visited)
end
end
visited.delete([x, y])
score
end
if File.exists?("input.txt")
file = File.open("input.txt")
file_data = file.read
file.close
else
file_data = "89010123\n78121874\n87430965\n96549874\n45678903\n32019012\n01329801\n10456732"
end
grid = file_data.split("\n")
trailheads = find_trailheads(grid)
result = 0
trailheads.each do |trailhead|
result += find_path(grid, trailhead[0], trailhead[1], Set.new)
#puts result
end
puts "result : #{result}"

2
2025/.gitignore vendored Normal file
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*/input
*/a.out

31
2025/01/part1.c Normal file
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#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
int main(void)
{
char *s = "L68\nL30\nR48\nL5\nR60\nL55\nL1\nL99\nR14\nL82\n";
/*char b[17100];
bzero(b, 17100);
FILE *f = fopen("input", "r");
fread(b, 1, 17100, f);
char *s = b;*/
int i = 0;
int c = 0;
int p = 50;
while(*s)
{
if (s[0] == 'R')
p = (p + atoi(&s[1])) % 100;
else if (s[0] == 'L')
p = (p - atoi(&s[1])) % 100;
if (p == 0) c++;
while (s[0] != '\n')
s++;
s++;
}
printf("result : %d\n", c);
}

47
2025/01/part2.c Normal file
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#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
int main(void)
{
char *s = "L68\nL30\nR48\nL5\nR60\nL55\nL1\nL99\nR14\nL82\n";
/*char b[17100];
bzero(b, 17100);
FILE *f = fopen("input", "r");
fread(b, 1, 17100, f);
char *s = b;*/
int i = 0;
int c = 0;
int p = 50;
while(*s)
{
int m = atoi(&s[1]);
if (s[0] == 'R')
{
while (m)
{
p = (p + 1) % 100;
if (p == 0)
c++;
m--;
}
}
else if (s[0] == 'L')
{
while (m)
{
p = (p - 1) % 100;
if (p == 0)
c++;
m--;
}
}
while (s[0] != '\n')
s++;
s++;
}
printf("result : %d\n", c);
}