diff --git a/cpp09/ex00/main.cpp b/cpp09/ex00/main.cpp
index ee3c06a..1e0a39c 100644
--- a/cpp09/ex00/main.cpp
+++ b/cpp09/ex00/main.cpp
@@ -6,35 +6,100 @@
 /*   By: rparodi <rparodi@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/04/08 12:15:32 by rparodi           #+#    #+#             */
-/*   Updated: 2025/04/11 12:38:36 by rparodi          ###   ########.fr       */
+/*   Updated: 2025/04/11 15:07:21 by rparodi          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "BitcoinExchange.hpp"
-#include <cstdlib>
-#include <fstream>
-#include <iostream>
-#include <map>
-#include <string>
-#include <unistd.h>
+#include <cmath>
+#include <regex.h>
 
+enum error_code {
+	NO_ERROR = 0,
+	NEGATIVE,
+	NO_FORMAT,
+	NO_DATE,
+	NO_LIMIT,
+	TOO_LARGE
+};
+
+typedef struct s_value {
+	enum error_code reason;
+	float value;
+} value;
+
+bool is_valid_format_date(std::string str)  {
+    regex_t regex;
+
+	int ret = regcomp(&regex, "^[0-9]{4}-[0-9]{2}-[0-9]{2}$", REG_EXTENDED);
+	if (ret)
+		return false;
+
+	ret = regexec(&regex, str.c_str(), 0, NULL, 0);
+	if (ret)
+		return false;
+	regfree(&regex);
+	return true;
+}
+std::string check_date(std::string name, enum error_code *error_code) {
+	if (!is_valid_format_date(name)) {
+		*error_code = NO_FORMAT;
+		return (name);
+	}
+	std::string year = name.substr(0, 4);
+	std::string month = name.substr(5, 2);
+	if (month > "12") {
+		*error_code = NO_DATE;
+		return (name);
+	}
+	std::string day = name.substr(8, 2);
+	if (day > "28") {
+		if (month == "02" && day == "29") {
+			if ((atoi(year.c_str()) % 4 == 0) && (atoi(year.c_str()) % 100 != 0 || atoi(year.c_str()) % 400 == 0))
+				*error_code = NO_DATE;
+		}
+		else {
+			std::string month_30[] = {"04", "06", "09", "11"};
+			for (int i = 0; i < 4; i++) {
+				if (month == month_30[i] && day > "30") {
+					*error_code = NO_DATE;
+				}
+			}
+		}
+	}
+	return (name);
+}
+
+value convertValue (enum error_code error, float value) {
+	s_value to_return;
+	to_return.reason = error;
+	to_return.value = value;
+	return to_return;
+}
+
+std::map<std::string, value>parse_input(std::string name) {
+	enum error_code tmpError;
+
+	std::ifstream file(name.c_str());
+
+	std::map<std::string, value> to_ret;
 
-std::map<std::string, float>parse_file(std::string name) {
-	std::map<std::string, float> to_ret;
 	std::string tmpLine;
-	std::ifstream file(name);
-	size_t line = 1;
+	std::string tmpDate;
+	float tmpValue = 0; 
 
 	while (std::getline(file, tmpLine)) {
+		tmpError = NO_ERROR;
 		std::size_t limit = tmpLine.find(" | ");
 		if (limit == std::string::npos) {
-			std::cerr << CLR_RED << "Limiter not found at the line " << line << CLR_RESET << std::endl;
-			exit(1);
+			tmpError = NO_FORMAT;
 		} else {
-			std::string tmpDate = tmpLine.substr(0, limit);
-			float tmpValue = std::atof(tmpLine.substr(limit + 3).c_str());
-			to_ret.insert(std::pair<std::string, float>(tmpDate, tmpValue));
+			tmpDate = check_date(tmpLine.substr(0, limit), &tmpError);
+			if (tmpError == NO_ERROR) {
+				tmpValue = std::atof(tmpLine.substr(limit + 3).c_str());
+			}
 		}
+		to_ret.insert(std::pair<std::string, value>(tmpDate, convertValue(tmpError, tmpValue)));
 	}
 	return to_ret;
 }
@@ -53,12 +118,12 @@ int	main(int argc, char *argv[]) {
 		exit( 1);
 	}
 	if (access("data.csv", F_OK)) {
-		std::cerr << CLR_RED << "The file `data.csv` have to exist (to take it from the insta make get_db)" << CLR_RESET << std::endl;
+		std::cerr << CLR_RED << "The file `data.csv` have to exist (to take it from the intra make get_db)" << CLR_RESET << std::endl;
 		exit(1);
 	}
 	if (access("data.csv", R_OK)) {
 		std::cerr << CLR_RED << "The program have to read on the file `data.csv`" << CLR_RESET << std::endl;
 		exit( 1);
 	}
-	std::map<std::string, float> user_db = parse_file(argv[1]);
+	std::map<std::string, value> user_db = parse_input(argv[1]);
 }