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add day 11

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tomoron
2024-12-11 22:55:01 +01:00
parent 87b6b6d06b
commit 3e998c4f9b
5 changed files with 293 additions and 37 deletions
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69
2024/11/Makefile Normal file
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# **************************************************************************** #
# #
# ::: :::::::: #
# Makefile :+: :+: :+: #
# +:+ +:+ +:+ #
# By: tomoron <tomoron@student.42.fr> +#+ +:+ +#+ #
# +#+#+#+#+#+ +#+ #
# Created: 2024/07/17 15:48:36 by tomoron #+# #+# #
# Updated: 2024/12/11 18:59:26 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

67
2024/11/main.c Normal file
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#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);
}

59
2024/11/part1.c
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@ -6,7 +6,7 @@
/* By: tomoron <tomoron@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/07/17 23:03:36 by tomoron #+# #+# */
/* Updated: 2024/12/11 17:17:34 by tomoron ### ########.fr */
/* Updated: 2024/12/11 22:19:45 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
@ -30,6 +30,7 @@ static t_pebble *get_input(char *input)
while(*input && (ft_isdigit(*input) || *input == ' '))
{
cur = malloc(sizeof(t_pebble));
cur->next = 0;
cur->value = atol(input);
if(prev)
prev->next = cur;
@ -44,7 +45,7 @@ static t_pebble *get_input(char *input)
return(res);
}
int count_digits(long int nb)
static int count_digits(long int nb)
{
int res;
@ -57,71 +58,57 @@ int count_digits(long int nb)
return(res);
}
void split_pebble(t_pebble *pebble)
static void split_pebble(long int *l, long int *r)
{
t_pebble *new;
t_pebble *tmp;
int len;
long exp;
int i;
new = malloc(sizeof(t_pebble));
len = count_digits(pebble->value) / 2;
new->value = 0;
len = count_digits(*l) / 2;
*r = 0;
i = 0;
exp = 1;
while(i < len)
{
new->value += (pebble->value % 10) * exp;
pebble->value /= 10;
*r += (*l % 10) * exp;
*l /= 10;
exp *= 10;
i++;
}
tmp = pebble->next;
pebble->next = new;
new->next = tmp;
}
long int update(t_pebble *pebble)
static long int get_nb(long int nb, int depth)
{
long int res;
long int tmp;
res = 0;
while(pebble)
if(depth == 25)
return(1);
if(nb == 0)
return(get_nb(1, depth + 1));
else if(count_digits(nb) % 2 == 0)
{
if(!pebble->value)
pebble->value = 1;
else if(count_digits(pebble->value) % 2 == 0)
{
split_pebble(pebble);
pebble = pebble->next;
}
else
pebble->value *= 2024;
pebble = pebble->next;
res++;
split_pebble(&nb, &tmp);
res = get_nb(nb, depth + 1);
return(res + get_nb(tmp, depth + 1));
}
return(res);
else
return(get_nb(nb * 2024, depth + 1));
}
long int resolve_part1(char *input, char **split)
{
(void)split;
(void)input;
t_pebble *pebble;
pebble = get_input(input);
int i;
long int res;
(void)get_input;
i = 0;
res = 0;
while(i < 25)
{
printf("step : %d, len :%ld\n",i, update(pebble));
i++;
}
while(pebble)
{
res++;
res += get_nb(pebble->value, 0);
pebble = pebble->next;
}
return(res);

132
2024/11/part2.c Normal file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* part2.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <tomoron@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/07/17 23:03:36 by tomoron #+# #+# */
/* Updated: 2024/12/11 22:52:44 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libft/libft.h"
#define MAX_NB_MAP 1000
typedef struct s_pebble
{
long int value;
struct s_pebble *next;
} t_pebble;
static t_pebble *get_input(char *input)
{
t_pebble *res;
t_pebble *prev;
t_pebble *cur;
prev = 0;
while(*input && (ft_isdigit(*input) || *input == ' '))
{
cur = malloc(sizeof(t_pebble));
cur->next = 0;
cur->value = atol(input);
if(prev)
prev->next = cur;
else
res = cur;
prev = cur;
while(ft_isdigit(*input))
input++;
while(*input == ' ')
input++;
}
return(res);
}
static int count_digits(long int nb)
{
int res;
res = 1;
while(nb > 9)
{
nb /= 10;
res++;
}
return(res);
}
static void split_pebble(long int *l, long int *r)
{
int len;
long exp;
int i;
len = count_digits(*l) / 2;
*r = 0;
i = 0;
exp = 1;
while(i < len)
{
*r += (*l % 10) * exp;
*l /= 10;
exp *= 10;
i++;
}
}
static long int get_nb(long int nb, long int depth, long int *map)
{
long int res;
long int tmp;
long int fuck;
fuck = nb;
if(depth == 75)
return(1);
if(map && nb >= 0 && nb < MAX_NB_MAP && map[(depth * MAX_NB_MAP) + nb])
return(map[(depth * MAX_NB_MAP) + nb]);
res = 0;
if(nb == 0)
res = get_nb(1, depth + 1, map);
else if(count_digits(nb) % 2 == 0)
{
split_pebble(&nb, &tmp);
res = get_nb(nb, depth + 1, map);
res += get_nb(tmp, depth + 1, map);
}
else
res = get_nb(nb * 2024, depth + 1, map);
if(map && fuck >= 0 && fuck < MAX_NB_MAP)
map[(depth * MAX_NB_MAP) + fuck] = res;
return(res);
}
long int resolve_part2(char *input, char **split)
{
(void)split;
(void)input;
t_pebble *pebble;
long int res;
long int *map;
size_t map_len;
(void)get_input;
res = 0;
pebble = get_input(input);
map_len = MAX_NB_MAP * 75 * sizeof(long int);
map = malloc(map_len);
bzero(map, map_len);
while(pebble)
{
res += get_nb(pebble->value, 0, map);
pebble = pebble->next;
}
free(map);
return(res);
}

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125 17