diff --git a/philo_one/Makefile b/philo_one/Makefile
index e69de29..8bd3076 100644
--- a/philo_one/Makefile
+++ b/philo_one/Makefile
@@ -0,0 +1,45 @@
+.PHONY:			all clean fclean re
+
+SRCS			=	main.c utilc.c
+
+
+SRC_DIR = ./srcs/
+OBJ_DIR = ./obj/
+
+OBJS			= $(SRCS:%.c=%.o)
+
+OBJS_FILES = $(addprefix $(OBJ_DIR), $(OBJS))
+
+HEADER = philo_header.h
+
+vpath %.h includes
+vpath %.o $(OBJ_DIR)
+vpath %.c $(SRC_DIR)
+
+CC				= gcc
+RM				= rm -f
+CFLAGS			= -Wall -Wextra -Werror -I ./includes/
+
+NAME			= philo_one
+
+all:	$(OBJ_DIR) $(NAME)
+
+norme :
+	norminette  $(addprefix $(SRC_DIR), $(SRCS))
+
+$(OBJ_DIR):
+	mkdir -p obj
+
+$(NAME):		$(OBJS_FILES)
+				$(CC) $(CFLAGS) -o $(NAME) $(OBJS_FILES)
+
+clean:
+				$(RM) $(OBJS_FILES)
+
+$(OBJ_DIR)%.o: %.c $(HEADER)
+	$(CC) $(CFLAGS) -c $< -o $@
+
+fclean:			clean
+				$(RM) $(NAME)
+
+re:				fclean $(NAME)
diff --git a/philo_one/includes/philo_header.h b/philo_one/includes/philo_header.h
index 804d75c..2457013 100644
--- a/philo_one/includes/philo_header.h
+++ b/philo_one/includes/philo_header.h
@@ -6,6 +6,7 @@
 # include <pthread.h>
 # include <sys/time.h>
 # include <stdio.h>
+# include <string.h>
 
 
 typedef struct	s_all
@@ -17,8 +18,10 @@ typedef struct	s_all
 	int number_of_times_each_philosopher_must_eat;
 }				t_all;
 
-void	*ft_calloc(size_t num, size_t size);
-t_all	*structalloc_and_bzero(void);
-int		parse_and_check_values(char **argv, int quantity);
+void				*ft_calloc(size_t num, size_t size);
+t_all				*structalloc_and_bzero(void);
+int					parse_and_check_values(char **argv, int quantity);
+int					ft_atoi(const char *str);
+int			check_f(char ch);
 
 #endif
diff --git a/philo_one/srcs/main.c b/philo_one/srcs/main.c
index a728aa3..c10c0c5 100644
--- a/philo_one/srcs/main.c
+++ b/philo_one/srcs/main.c
@@ -1,15 +1,81 @@
 #include "../includes/philo_header.h"
 
+int check_param(t_all *all, int optional)
+{
+	if (optional)
+	{
+		if (all->number_of_philosophers <= 0)
+			return(1);
+		if (all->time_to_die <= 0)
+			return(1);
+		if (all->time_to_eat <= 0)
+			return(1);
+		if (all->time_to_sleep <= 0)
+			return(1);
+		if (all->number_of_times_each_philosopher_must_eat <= 0)
+			return(1);
+	}
+	else
+	{
+		if (all->number_of_philosophers <= 0)
+			return(1);
+		if (all->time_to_die <= 0)
+			return(1);
+		if (all->time_to_eat <= 0)
+			return(1);
+		if (all->time_to_sleep <= 0)
+			return(1);
+	}
+	return (0);
+}
 
+int		parse_param(t_all *all, int optional, char **argv)
+{
+	if (optional)
+	{
+		all->number_of_philosophers = ft_atoi(argv[1]);
+		all->time_to_die = ft_atoi(argv[2]);
+		all->time_to_eat = ft_atoi(argv[3]);
+		all->time_to_sleep = ft_atoi(argv[4]);
+		all->number_of_times_each_philosopher_must_eat = ft_atoi(argv[5]);
+		return (check_param(all, 1));
+	}
+	else
+	{
+		all->number_of_philosophers = ft_atoi(argv[1]);
+		all->time_to_die = ft_atoi(argv[2]);
+		all->time_to_eat = ft_atoi(argv[3]);
+		all->time_to_sleep = ft_atoi(argv[4]);
+		return (check_param(all, 0));
+	}
+}
 
 int		parse_and_check_values(char **argv, int quantity)
 {
 	t_all *all;
 
 	all = structalloc_and_bzero();
+	if (quantity == 5)
+	{
+		printf("ok standart run\n");
+		parse_param(all, 0, argv);
+		return(1);
+	}
+	else if (quantity == 6)
+	{
+		printf("ok run with optional\n");
+		parse_param(all, 1, argv);
+		return(1);
+	}
+	else
+	{
+		printf("error please use argument 5 (optional) or 4 (standart) \n");
+		free(all);
+		return(0);
+	}
 }
 
 int		main(int argc, char **argv)
 {
-
+	parse_and_check_values(argv, argc);
 }
diff --git a/philo_one/srcs/utilc.c b/philo_one/srcs/utilc.c
index e201a5f..45eb288 100644
--- a/philo_one/srcs/utilc.c
+++ b/philo_one/srcs/utilc.c
@@ -1,5 +1,43 @@
 #include "../includes/philo_header.h"
 
+int			check_f(char ch)
+{
+	if (ch == '\t' || ch == '\n' || ch == ' ' || \
+		ch == '\v' || ch == '\f' || ch == '\r')
+		return (1);
+	else
+		return (0);
+}
+
+int					ft_atoi(const char *str)
+{
+	int					i;
+	unsigned long int	result;
+	int					operator;
+
+	i = 0;
+	operator = 1;
+	result = 0;
+	while (check_f(str[i]))
+		i++;
+	if (str[i] == '-' || str[i] == '+')
+	{
+		if (str[i] == '-')
+			operator *= -1;
+		i++;
+	}
+	while (str[i] >= '0' && str[i] <= '9')
+	{
+		if (result > 922337203685477580 && operator == -1)
+			return (0);
+		else if (result > 922337203685477580 && operator == 1)
+			return (-1);
+		result = result * 10 + str[i] - '0';
+		i++;
+	}
+	return (result * operator);
+}
+
 void	*ft_calloc(size_t num, size_t size)
 {
 	void			*addr;
@@ -23,9 +61,10 @@ t_all	*structalloc_and_bzero(void)
 	t_all *all;
 
 	all = ft_calloc(sizeof(t_all), 1);
-	all->number_of_philosophers = 0;
-	all->time_to_die = 0;
-	all->time_to_eat = 0;
-	all->time_to_sleep = 0;
-	all->number_of_times_each_philosopher_must_eat = 0;
+	all->number_of_philosophers = -1;
+	all->time_to_die = -1;
+	all->time_to_eat = -1;
+	all->time_to_sleep = -1;
+	all->number_of_times_each_philosopher_must_eat = -1;
+	return(all);
 }