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