05 bonus

05_b/main.c

@@ -0,0 +1,72 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   main.c                                             :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dgaillet <dgaillet@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/12/16 10:44:11 by dgaillet          #+#    #+#             */
+/*   Updated: 2025/12/16 15:25:14 by dgaillet         ###   ########lyon.fr   */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "aoc05.h"
+#include "get_next_char.h"
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static void	update_range(t_range *lst)
+{
+	t_range	*node = lst;
+
+	while (lst->pre)
+		lst = lst->pre;
+	while (lst != node)
+	{
+		if (node->start >= lst->start && node->start <= lst->end)
+			node->start = lst->end + 1;
+		if (node->end >= lst->start && node->end <= lst->end)
+			node->end = lst->start - 1;
+		if ((lst->start >= node->start && lst->start <= node->end)
+			&& (lst->end >= node->start && lst->end <= node->end))
+		{
+			lst->start = 0;
+			lst->end = -1;
+		}
+		lst = lst->next;
+	}
+	if (node->start > node->end)
+	{
+		node->start = 0;
+		node->end = -1;
+	}
+}
+
+int	main(void)
+{
+	int					fd = open("input", O_RDONLY);
+	t_range				*lst = parsing(fd);
+	unsigned long long	nb_fresh = 0;
+
+	while (lst->next)
+	{
+		update_range(lst);
+		lst = lst->next;
+	}
+	update_range(lst);
+	while (lst->pre)
+		lst = lst->pre;
+	while (lst->next)
+	{
+		nb_fresh += 1 + lst->end - lst->start;
+		lst = lst->next;
+	}
+	nb_fresh += 1 + lst->end - lst->start;
+	while (lst->pre)
+		lst = lst->pre;
+	close(fd);
+	lst_clear(lst);
+	printf("\n%lld\n", nb_fresh);
+}