diff --git a/Makefile b/Makefile
index 12dec78..275f740 100644
--- a/Makefile
+++ b/Makefile
@@ -21,7 +21,8 @@ LIBFT_D = ./libft
 LIBFT = $(LIBFT_D)/libft.a
 
 SRCS =	main.c \
-		init.c
+		init.c \
+		exec.c
 
 DIR_OBJS = builds
 OBJS = $(SRCS:%.c=$(DIR_OBJS)/%.o)
diff --git a/headers/philo_proto.h b/headers/philo_proto.h
index a97cd0d..c007515 100644
--- a/headers/philo_proto.h
+++ b/headers/philo_proto.h
@@ -1,8 +1,13 @@
 #ifndef PHILO_PROTO_H
 # define PHILO_PROTO_H
 
+pthread_mutex_t mutex;
+
 // init.c
-t_philo	*init(char **av, pthread_t **id);
+t_philo	*init(int ac, char **av, pthread_t **id);
+
+// exec.c
+void	*philo_exec(void *arg);
 
 #endif
 
diff --git a/srcs/exec.c b/srcs/exec.c
new file mode 100644
index 0000000..acdaa15
--- /dev/null
+++ b/srcs/exec.c
@@ -0,0 +1,19 @@
+#include "philo.h"
+
+void	*philo_exec(void *arg)
+{
+	t_philo	*philo;
+	int		nbr;
+
+	philo = (t_philo*)arg;
+	nbr = philo->philo_nbr;
+
+	pthread_mutex_lock(&mutex);
+	write(1, "-", 1);
+	ft_putnbr_fd(nbr, 1);
+	write(1, "\n", 1);
+	pthread_mutex_unlock(&mutex);
+
+	return (NULL);
+}
+
diff --git a/srcs/init.c b/srcs/init.c
index 54b4fba..a2512a6 100644
--- a/srcs/init.c
+++ b/srcs/init.c
@@ -7,6 +7,13 @@ t_philo	*init_struc_philo(t_philo *new, t_conditions *conditions, int i)
 	return (new);
 }
 
+// it's just because init_chain_philo was too long
+void	put_prev_n_next(t_philo *new, t_philo *philo)
+{
+	new->prev = philo;
+	philo->next = new;
+}
+
 t_philo	*init_chain_philo(t_conditions *conditions, int n)
 {
 	t_philo	*start;
@@ -18,14 +25,13 @@ t_philo	*init_chain_philo(t_conditions *conditions, int n)
 	while (i < n)
 	{
 		new = malloc(sizeof(t_philo) * 1);
+		if (new == NULL)
+			return (NULL);
 		new = init_struc_philo(new, conditions, i);
 		if (i == 0)
 			start = new;
 		else
-		{
-			new->prev = philo;
-			philo->next = new;
-		}
+			put_prev_n_next(new, philo);
 		philo = new;
 		i++;
 	}
@@ -35,16 +41,38 @@ t_philo	*init_chain_philo(t_conditions *conditions, int n)
 	return (philo);
 }
 
-t_philo	*init(char **av, pthread_t **id)
+t_conditions	*init_conditions(int ac, char **av)
+{
+	t_conditions	*conditions;
+
+	if (ac == 5 || ac == 6)
+	{
+		conditions = malloc(sizeof(t_conditions));
+		conditions->n_phi = ft_atoi(av[1]);
+		conditions->t_die = ft_atoi(av[2]);
+		conditions->t_eat = ft_atoi(av[3]);
+		conditions->t_slp = ft_atoi(av[4]);
+		if (ac == 6)
+			conditions->n_eat = ft_atoi(av[5]);
+	}
+	else
+		return (NULL);
+	return (conditions);
+}
+
+t_philo	*init(int ac, char **av, pthread_t **id)
 {
 	t_philo			*philo;
 	t_conditions	*conditions;
-	int				n;
 
-	n = ft_atoi(av[1]);
-	conditions = malloc(sizeof(t_conditions));
-	conditions->n_phi = n;
-	*id = malloc(sizeof(int) * n);
-	philo = init_chain_philo(conditions, n);
+	conditions = init_conditions(ac, av);
+	if (conditions == NULL)
+		return (NULL);
+	*id = malloc(sizeof(int) * conditions->n_phi);
+	if (*id == NULL)
+		return (NULL);
+	philo = init_chain_philo(conditions, conditions->n_phi);
+	if (philo == NULL)
+		return (NULL);
 	return (philo);
 }
diff --git a/srcs/main.c b/srcs/main.c
index a57525e..10e3d78 100644
--- a/srcs/main.c
+++ b/srcs/main.c
@@ -1,22 +1,16 @@
 #include "philo.h"
 
-pthread_mutex_t mutex;
-
-void	*philo_exec(void *arg)
+void	create_threads(t_philo *philo, pthread_t *id, int n)
 {
-	t_philo	*philo;
-	int		nbr;
+	int			i;
 
-	philo = (t_philo*)arg;
-	nbr = philo->philo_nbr;
-
-	pthread_mutex_lock(&mutex);
-	write(1, "-", 1);
-	ft_putnbr_fd(nbr, 1);
-	write(1, "\n", 1);
-	pthread_mutex_unlock(&mutex);
-
-	return (NULL);
+	i = 0;
+	while (i < n)
+	{
+		pthread_create(&id[i], NULL, &philo_exec, philo);
+		philo = philo->next;
+		i++;
+	}
 }
 
 int	main(int ac, char **av)
@@ -26,24 +20,18 @@ int	main(int ac, char **av)
 	int			i;
 	int			n;
 
-	if (ac == 1)
-		return (0);
-	philo = init(av, &id);
-	i = 0;
+	philo = init(ac, av, &id);
+	if (philo == NULL)
+    	return (0);
 	n = philo->conditions->n_phi;
 	pthread_mutex_init(&mutex, NULL);
-	while (i < n)
-	{
-		pthread_create(&id[i], NULL, &philo_exec, philo);
-		philo = philo->next;
-		i++;
-	}
+	create_threads(philo, id, n);
 	i = 0;
 	while (i < n)
 	{
 		pthread_join(id[i], NULL);
 		i++;
 	}
-	write(1, "main function\n", 14);      
-    return 0;
+write(1, "main function\n", 14);
+    return (0);
 }