78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* part2.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: 2025/12/09 12:37:36 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 "libft/libft.h"
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long int get_timelines(char **map, int x, int y, long int *hash, int len)
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{
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long int res;
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int start_x;
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int start_y;
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start_x = x;
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start_y = y;
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if(hash[y * len + x])
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return(hash[y * len + x]);
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while(map[y] && map[y][x] == '.')
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y++;
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if(map[y])
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{
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res = get_timelines(map, x+1, y, hash, len);
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res += get_timelines(map, x-1, y, hash, len);
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}
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else
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res = 1;
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hash[start_y * len + start_x] = res;
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return(res);
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}
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long int *create_hashmap(char **map)
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{
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int len;
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int height;
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len = 0;
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height = 0;
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while(map[0][len])
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len++;
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while(map[height])
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height++;
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return(malloc(len * height * sizeof(long int)));
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}
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long int resolve_part2(char *input, char **split)
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{
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(void)input;
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long int res;
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long int *hash;
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int len;
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int s_pos;
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len = 0;
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hash = create_hashmap(split);
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s_pos = 0;
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if(!hash)
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return(0);
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while(split[0][len])
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{
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if(split[0][len] == 'S')
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s_pos = len;
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len++;
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}
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res = get_timelines(split, s_pos, 0, hash,len);
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return(res);
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}
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