diff --git a/2024/18/Makefile b/2024/18/Makefile
new file mode 100644
index 0000000..808a501
--- /dev/null
+++ b/2024/18/Makefile
@@ -0,0 +1,69 @@
+# **************************************************************************** #
+#                                                                              #
+#                                                         :::      ::::::::    #
+#    Makefile                                           :+:      :+:    :+:    #
+#                                                     +:+ +:+         +:+      #
+#    By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+         #
+#                                                 +#+#+#+#+#+   +#+            #
+#    Created: 2024/07/17 15:48:36 by tomoron           #+#    #+#              #
+#    Updated: 2024/10/29 20:43:12 by tomoron          ###   ########.fr        #
+#                                                                              #
+# **************************************************************************** #
+
+SRCS =	main.c\
+		part1.c\
+		part2.c
+
+OBJS = $(SRCS:.c=.o)
+
+FLAGS = -Wextra -Werror -Wall -g
+
+LIB = libft/libft.a
+
+all: $(LIB) a.out test
+	cp test cur_input
+	./a.out
+
+f: $(LIB) a.out input
+	cp input cur_input
+	./a.out
+
+test: 
+	touch test
+
+input:
+	touch input
+
+cp:
+	cp part1.c part2.c
+	sed -i 's/resolve_part1/resolve_part2/g' part2.c
+
+$(LIB): libft
+	make -C libft
+
+libft:
+	cp -r ~/Desktop/aoc/libft .
+
+main.c:
+	cp ~/Desktop/aoc/main.c .
+
+part1.c:
+	cp ~/Desktop/aoc/part1.c .
+
+part2.c:
+	cp ~/Desktop/aoc/part2.c .
+
+a.out: main.c $(OBJS) $(LIB)
+	clang $(FLAGS) $(OBJS) $(LIB)
+
+clean:
+	rm -rf $(OBJS)
+	rm -rf libft
+
+fclean: clean
+	rm -rf a.out
+
+.c.o:
+	clang $(FLAGS) -c $< -o $@
+
+.PHONY: t all clean fclean cp
diff --git a/2024/18/main.c b/2024/18/main.c
new file mode 100644
index 0000000..4f9b609
--- /dev/null
+++ b/2024/18/main.c
@@ -0,0 +1,67 @@
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include "libft/libft.h"
+
+long int resolve_part1(char *input, char **split);
+long int resolve_part2(char *input, char **split);
+
+char *get_input(char *file)
+{
+	int fd;
+	int rd_len;
+	char buffer[1000];
+	int len;
+	char *res;
+
+	fd = open(file, O_RDONLY);
+	len = 0;
+	if(fd < 0)
+		return(0);
+	rd_len = -1;
+	while(rd_len)
+	{
+		rd_len = read(fd, buffer, 1000);
+		len+= rd_len;
+	}
+	close(fd);
+	res = malloc(len + 1);
+	if(!res)
+		return(0);
+	fd = open(file, O_RDONLY);
+	if(fd < 0)
+		return(0);
+	rd_len = read(fd,res, len);
+	res[len] = 0;
+	close(fd);
+	return(res);
+}
+
+int main(void)
+{
+	char *input;
+	char *input_cpy;
+	char **split;
+
+	input = get_input("cur_input");
+	input_cpy = ft_strdup(input);
+	if(!input || !input_cpy)
+	{
+		fprintf(stderr, "file read error\n");
+		return(1);
+	}
+	split = ft_split(input, '\n');
+	if(!split)
+		return(1);
+	printf("result part 1: %ld\n", resolve_part1(input, split));
+	ft_free_str_arr(split);
+	split = ft_split(input_cpy, '\n');
+	if(!split)
+		return(1);
+	printf("result part 2: %ld\n", resolve_part2(input, split));
+	ft_free_str_arr(split);
+	free(input);
+	free(input_cpy);
+	return(0);
+}
diff --git a/2024/18/part1.c b/2024/18/part1.c
new file mode 100644
index 0000000..3b6a65c
--- /dev/null
+++ b/2024/18/part1.c
@@ -0,0 +1,219 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   part1.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/07/17 23:03:36 by tomoron           #+#    #+#             */
+/*   Updated: 2024/12/18 13:59:37 by tomoron          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include "libft/libft.h"
+
+typedef struct s_pos
+{
+	int x;
+	int y;
+} t_pos;
+
+typedef struct s_lst
+{
+	t_pos			pos;
+	uint32_t		score;
+	int				dir[2];
+	struct s_lst	*next;
+}	t_lst;
+
+static void *create_map(char **map, uint8_t fill, int bloc_size)
+{
+	int width;
+	int height;
+	int i;
+	void **res;
+
+	height = 0;
+	while(map[height])
+		height++;
+	width = 0;
+	while(map[0][width])
+		width++;
+	res = malloc((height + 1) * sizeof(void *));	
+	i = 0;
+	while(i < height)
+	{
+		res[i] = malloc((width + 1) * bloc_size);
+		ft_memset(res[i], fill, width * bloc_size);
+		((char **)res)[i][width * bloc_size] = 0;
+		i++;
+	}
+	return(res);
+}
+
+static int get_new_pos(t_lst **lst, char **vis, t_pos *pos, uint32_t *score, int *dir)
+{
+	t_lst *cur;
+	t_lst *sel;
+	t_lst *p_sel;
+	t_lst *prev;
+	uint32_t min;
+
+	if(!*lst)
+		return(0);
+	cur = *lst;
+	sel = 0;
+	p_sel = 0;
+	prev = 0;
+	min = -1;
+	while(cur)
+	{
+		if(cur->score < min)	
+		{
+			sel = cur;
+			p_sel = prev;
+			min = cur->score;
+		}
+		prev = cur;
+		cur = cur->next;
+	}
+	if(*lst && sel == *lst)
+		*lst = (*lst)->next;
+	if(p_sel)
+		p_sel->next = sel->next;
+	sel->next = 0;
+	*score = sel->score;
+	pos->x = sel->pos.x;
+	pos->y = sel->pos.y;
+	dir[0] = sel->dir[0];
+	dir[1] = sel->dir[1];
+	free(sel);
+	if(vis[pos->y][pos->x])
+		return(get_new_pos(lst, vis, pos, score, dir));
+	return(1);
+}
+
+static void add_lst(t_lst **lst, uint32_t score, t_pos pos, int dir[2])
+{
+	t_lst *new;
+	
+	new = malloc(sizeof(t_lst));
+	new->dir[0] = dir[0];
+	new->dir[1] = dir[1];
+	new->pos.x = pos.x;
+	new->pos.y = pos.y;
+	new->score = score;
+	new->next = *lst;
+	*lst = new;
+}
+
+static int	*rotate_dir(int dir[2], int inv, int *res)
+{
+	res[0] = 0;
+	res[1] = 0;
+	if(dir[0])	
+		res[1] = dir[0];	
+	if(dir[1])
+		res[0] = dir[1];
+	if(inv)
+	{
+		res[0] = -res[0];
+		res[1] = -res[1];
+	}
+	return(res);
+}
+
+static int is_valid_move(char **map, int y, int x)
+{
+	return(x >= 0 && y >= 0 && map[y] && map[y][x] == '.');
+}
+
+static uint32_t dijkstra(char **map, t_pos *pos)
+{
+	int dir[2];
+	int tmp[2];
+	char **visited;
+	t_lst *lst;
+	uint32_t score;
+
+	visited = create_map(map, 0, 1);
+	lst = 0;
+	add_lst(&lst, 0, *pos, (int [2]){0, 1});
+	while(get_new_pos(&lst, visited, pos, &score, dir))
+	{
+		visited[pos->y][pos->x] = 1;
+		if(map[pos->y][pos->x] == '#')
+			continue;
+		if(pos->y == 70 && pos->x == 70)
+			return(score);
+		if(is_valid_move(map, pos->y + dir[0], pos->x + dir[1]))
+			add_lst(&lst, score + 1, (t_pos){pos->x + dir[1], pos->y + dir[0]}, dir);
+		rotate_dir(dir, 0, tmp);
+		if(is_valid_move(map, pos->y + tmp[0], pos->x + tmp[1]))
+			add_lst(&lst, score + 1, (t_pos){pos->x + tmp[1], pos->y + tmp[0]}, tmp);
+		rotate_dir(dir, 1, tmp);
+		if(is_valid_move(map, pos->y + tmp[0], pos->x + tmp[1]))
+			add_lst(&lst, score + 1, (t_pos){pos->x + tmp[1], pos->y + tmp[0]}, tmp);
+	}
+	return(0);
+}
+
+static char **create_map_size(int size, char fill)
+{
+	int i;
+	char **res;
+
+	res = malloc((size + 1) * sizeof(char *));
+	res[size] = 0;
+	i = 0;
+	while(i < size)
+	{
+		res[i] = malloc(size + 1);
+		res[i][size] = 0;
+		ft_memset(res[i], fill, size);
+		i++;
+	}
+	return(res);
+}
+
+static void get_nbrs(char *line, int *x, int *y)
+{
+	while(*line && !ft_isdigit(*line))
+		line++;
+	*x = ft_atoi(line);
+	while(ft_isdigit(*line))
+		line++;
+	while(*line && !ft_isdigit(*line))
+		line++;
+	*y = ft_atoi(line);
+}
+
+static void fill_map(char **map, char **split, int limit)
+{
+	int x;
+	int y;
+	int i;
+
+	(void)map;
+	i = 0;
+	while(*split && i < limit)
+	{
+		get_nbrs(*split, &x, &y);
+		map[y][x] = '#';
+		split++;
+		i++;
+	}
+}
+
+long int resolve_part1(char *input, char **split)
+{
+	char **map;
+	(void)input;
+
+	map = create_map_size(71, '.');
+	fill_map(map, split, 1024);
+	return(dijkstra(map,&((t_pos){0, 0})));
+}
diff --git a/2024/18/part2.c b/2024/18/part2.c
new file mode 100644
index 0000000..2b18fa9
--- /dev/null
+++ b/2024/18/part2.c
@@ -0,0 +1,221 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   part2.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/07/17 23:03:36 by tomoron           #+#    #+#             */
+/*   Updated: 2024/12/18 14:19:27 by tomoron          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include "libft/libft.h"
+
+typedef struct s_pos
+{
+	int x;
+	int y;
+} t_pos;
+
+typedef struct s_lst
+{
+	t_pos			pos;
+	uint32_t		score;
+	int				dir[2];
+	struct s_lst	*next;
+}	t_lst;
+
+static void *create_map(char **map, uint8_t fill, int bloc_size)
+{
+	int width;
+	int height;
+	int i;
+	void **res;
+
+	height = 0;
+	while(map[height])
+		height++;
+	width = 0;
+	while(map[0][width])
+		width++;
+	res = malloc((height + 1) * sizeof(void *));	
+	i = 0;
+	while(i < height)
+	{
+		res[i] = malloc((width + 1) * bloc_size);
+		ft_memset(res[i], fill, width * bloc_size);
+		((char **)res)[i][width * bloc_size] = 0;
+		i++;
+	}
+	return(res);
+}
+
+static int get_new_pos(t_lst **lst, char **vis, t_pos *pos, uint32_t *score, int *dir)
+{
+	t_lst *cur;
+	t_lst *sel;
+	t_lst *p_sel;
+	t_lst *prev;
+	uint32_t min;
+
+	if(!*lst)
+		return(0);
+	cur = *lst;
+	sel = 0;
+	p_sel = 0;
+	prev = 0;
+	min = -1;
+	while(cur)
+	{
+		if(cur->score < min)	
+		{
+			sel = cur;
+			p_sel = prev;
+			min = cur->score;
+		}
+		prev = cur;
+		cur = cur->next;
+	}
+	if(*lst && sel == *lst)
+		*lst = (*lst)->next;
+	if(p_sel)
+		p_sel->next = sel->next;
+	sel->next = 0;
+	*score = sel->score;
+	pos->x = sel->pos.x;
+	pos->y = sel->pos.y;
+	dir[0] = sel->dir[0];
+	dir[1] = sel->dir[1];
+	free(sel);
+	if(vis[pos->y][pos->x])
+		return(get_new_pos(lst, vis, pos, score, dir));
+	return(1);
+}
+
+static void add_lst(t_lst **lst, uint32_t score, t_pos pos, int dir[2])
+{
+	t_lst *new;
+	
+	new = malloc(sizeof(t_lst));
+	new->dir[0] = dir[0];
+	new->dir[1] = dir[1];
+	new->pos.x = pos.x;
+	new->pos.y = pos.y;
+	new->score = score;
+	new->next = *lst;
+	*lst = new;
+}
+
+static int	*rotate_dir(int dir[2], int inv, int *res)
+{
+	res[0] = 0;
+	res[1] = 0;
+	if(dir[0])	
+		res[1] = dir[0];	
+	if(dir[1])
+		res[0] = dir[1];
+	if(inv)
+	{
+		res[0] = -res[0];
+		res[1] = -res[1];
+	}
+	return(res);
+}
+
+static int is_valid_move(char **map, int y, int x)
+{
+	return(x >= 0 && y >= 0 && map[y] && map[y][x] == '.');
+}
+
+static uint32_t dijkstra(char **map, t_pos *pos, int corner)
+{
+	int dir[2];
+	int tmp[2];
+	char **visited;
+	uint32_t **dists;
+	t_lst *lst;
+	uint32_t score;
+
+	visited = create_map(map, 0, 1);
+	dists = create_map(map, 255, sizeof(uint32_t));
+	lst = 0;
+	add_lst(&lst, 0, *pos, (int [2]){0, 1});
+	while(get_new_pos(&lst, visited, pos, &score, dir))
+	{
+		if(dists[pos->y][pos->x] > score)
+			dists[pos->y][pos->x] = score;
+		visited[pos->y][pos->x] = 1;
+		if(map[pos->y][pos->x] == '#')
+			continue;
+		if(is_valid_move(map, pos->y + dir[0], pos->x + dir[1]))
+			add_lst(&lst, score + 1, (t_pos){pos->x + dir[1], pos->y + dir[0]}, dir);
+		rotate_dir(dir, 0, tmp);
+		if(is_valid_move(map, pos->y + tmp[0], pos->x + tmp[1]))
+			add_lst(&lst, score + 1, (t_pos){pos->x + tmp[1], pos->y + tmp[0]}, tmp);
+		rotate_dir(dir, 1, tmp);
+		if(is_valid_move(map, pos->y + tmp[0], pos->x + tmp[1]))
+			add_lst(&lst, score + 1, (t_pos){pos->x + tmp[1], pos->y + tmp[0]}, tmp);
+	}
+	if(dists[corner][corner] != (uint32_t) -1)
+		return(dists[corner][corner]);
+	return(0);
+}
+
+static char **create_map_size(int size, char fill)
+{
+	int i;
+	char **res;
+
+	res = malloc((size + 1) * sizeof(char *));
+	res[size] = 0;
+	i = 0;
+	while(i < size)
+	{
+		res[i] = malloc(size + 1);
+		res[i][size] = 0;
+		ft_memset(res[i], fill, size);
+		i++;
+	}
+	return(res);
+}
+
+static void get_nbrs(char *line, int *x, int *y)
+{
+	while(*line && !ft_isdigit(*line))
+		line++;
+	*x = ft_atoi(line);
+	while(ft_isdigit(*line))
+		line++;
+	while(*line && !ft_isdigit(*line))
+		line++;
+	*y = ft_atoi(line);
+}
+
+long int resolve_part2(char *input, char **split)
+{
+	char **map;
+	(void)input;
+	int x;
+	int y;
+	int i;
+
+	map = create_map_size(71, '.');
+	(void)map;
+	i = 1024;
+	while(split[i])
+	{
+		get_nbrs(split[i], &x, &y);
+		map[y][x] = '#';
+		if(dijkstra(map,&((t_pos){0, 0}), 70) == 0)
+		{
+			printf("real res : %d,%d\n", x, y);
+			return(i);
+		}
+		i++;
+	}
+	return(-1);
+}
diff --git a/2024/18/test b/2024/18/test
new file mode 100644
index 0000000..79c8583
--- /dev/null
+++ b/2024/18/test
@@ -0,0 +1,25 @@
+5,4
+4,2
+4,5
+3,0
+2,1
+6,3
+2,4
+1,5
+0,6
+3,3
+2,6
+5,1
+1,2
+5,5
+2,5
+6,5
+1,4
+0,4
+6,4
+1,1
+6,1
+1,0
+0,5
+1,6
+2,0