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day 12 part 1

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tomoron
2024-12-12 13:37:56 +01:00
parent 3e998c4f9b
commit db1eb6c158
5 changed files with 268 additions and 0 deletions
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69
2024/12/Makefile Normal file
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# **************************************************************************** #
# #
# ::: :::::::: #
# Makefile :+: :+: :+: #
# +:+ +:+ +:+ #
# By: tomoron <tomoron@student.42.fr> +#+ +:+ +#+ #
# +#+#+#+#+#+ +#+ #
# Created: 2024/07/17 15:48:36 by tomoron #+# #+# #
# Updated: 2024/10/29 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

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2024/12/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);
}

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2024/12/part1.c Normal file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* part1.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <tomoron@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/07/17 23:03:36 by tomoron #+# #+# */
/* Updated: 2024/12/12 13:32:35 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include "libft/libft.h"
char **create_locations(char **map)
{
int width;
int height;
char **res;
int i;
height = 0;
while(map[height])
height++;
width = 0;
while(map[0][width])
width++;
res = malloc((height + 1) * sizeof(char *));
res[height] = 0;
i = 0;
while(i < height)
{
res[i] = malloc(width + 1);
bzero(res[i], width + 1);
i++;
}
return(res);
}
int get_area_perimetter(char **map, int pos[2], int perimetter, char **locations, char c)
{
int res;
if(perimetter && pos[0] >= 0 && pos[1] >= 0 && map[pos[0]] && map[pos[0]][pos[1]] && locations[pos[0]][pos[1]])
return(0);
if(pos[0] < 0 || pos[1] < 0 || !map[pos[0]] || map[pos[0]][pos[1]] != c)
return(perimetter != 0);
res = 0;
res += !perimetter && c == map[pos[0]][pos[1]];
if(perimetter)
locations[pos[0]][pos[1]] = 1;
else
map[pos[0]][pos[1]] = '.';
res += get_area_perimetter(map, (int [2]){pos[0] - 1, pos[1]}, perimetter, locations, c);
res += get_area_perimetter(map, (int [2]){pos[0] + 1, pos[1]}, perimetter, locations, c);
res += get_area_perimetter(map, (int [2]){pos[0], pos[1] - 1}, perimetter, locations, c);
res += get_area_perimetter(map, (int [2]){pos[0], pos[1] + 1}, perimetter, locations, c);
return(res);
}
long int calc_price(char **map, int x, int y)
{
int area;
int perimetter;
char **locations;
locations = create_locations(map);
perimetter = get_area_perimetter(map, (int [2]){y, x}, 1, locations, map[y][x]);
area = get_area_perimetter(map,(int [2]){y, x}, 0, locations, map[y][x]);
ft_free_str_arr(locations);
return(area * perimetter);
}
long int resolve_part1(char *input, char **split)
{
(void)input;
int i;
int j;
long int res;
i = 0;
res = 0;
while(split[i])
{
j = 0;
while(split[i][j])
{
if(split[i][j] != '.')
res += calc_price(split, j, i);
j++;
}
i++;
}
return(res);
}

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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* part2.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <tomoron@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/07/17 23:03:36 by tomoron #+# #+# */
/* Updated: 2024/07/17 23:18:02 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
#include <stdio.h>
#include <stdlib.h>
#include "libft/libft.h"
long int resolve_part2(char *input, char **split)
{
(void)input;
(void)split;
return(0);
}

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RRRRIICCFF
RRRRIICCCF
VVRRRCCFFF
VVRCCCJFFF
VVVVCJJCFE
VVIVCCJJEE
VVIIICJJEE
MIIIIIJJEE
MIIISIJEEE
MMMISSJEEE