diff --git a/11/part2.c b/11/part2.c
index 1480432..d9e30fb 100644
--- a/11/part2.c
+++ b/11/part2.c
@@ -1,10 +1,16 @@
 #include "_.h"
+#include <pthread.h>
 
 typedef struct structure {
     int nbr;
     struct structure *next;
 } struc;
 
+typedef struct data_t {
+    long nbr;
+    int max;
+} data;
+
 long long lenght_struc(struc *head) {
     long long count = 0;
     while (head->next != NULL) {
@@ -21,6 +27,47 @@ void print_struc(struc *head) {
     }
 }
 
+void* thread(void *data_void);
+
+pthread_t create_thread(long nbr, int max) {
+    pthread_t thread_id;
+    data dt = {nbr, max};
+    pthread_create(&thread_id, NULL, thread, &dt);
+    pthread_join(thread_id, NULL);
+
+    return thread_id;
+}
+
+long count = 0;
+pthread_mutex_t mutex;
+
+void blink(long nbr, int max) {
+    for (; max > 0; max--) {
+        if (nbr == 0) {
+            nbr = 1;
+        }
+        else if (((int)floor(log10(ABS(nbr))) + 1) % 2 == 0) {
+            double len = floor(log10(ABS(nbr))) + 1;
+            int left = nbr / (pow(10, len / 2)); 
+            nbr = nbr % (long)(pow(10, len / 2)); 
+
+            create_thread(left, max - 1);
+        }
+        else 
+            nbr *= 2024;
+    }
+    pthread_mutex_lock(&mutex);
+    count++;
+    pthread_mutex_unlock(&mutex);
+}
+
+void* thread(void *data_void) {
+    data *dt = (data*)data_void;
+    blink(dt->nbr, dt->max);
+
+    return NULL;
+}
+
 int main(int argc, char **argv) {
 	
 	if (argc != 2)
@@ -37,52 +84,24 @@ int main(int argc, char **argv) {
         cur = cur->next;
     }
 
-    long long count = lenght_struc(head);
-    long long pre_count = count;
-    long long estimate = count;
-    double average = 0;
-    int max = 40;
-    for (int i = 0; i < max; i++) {
-        cur = head;
-        for (int j = 0; cur->next != NULL; j++) {
-            if (cur->nbr == 0) {
-                cur->nbr = 1;
-                cur = cur->next;
-            }
-            else if (((int)floor(log10(ABS(cur->nbr))) + 1) % 2 == 0) {
-                double len = floor(log10(ABS(cur->nbr))) + 1;
-                int left = cur->nbr / (pow(10, len / 2)); 
-                int right = cur->nbr % (int)(pow(10, len / 2)); 
-
-                struc *new = calloc(1, sizeof(struc));
-                new->nbr = right;
-                new->next = cur->next;
-
-                cur->nbr = left;
-                cur->next = new;
-                cur = new->next;
-
-                count++;
-            }
-            else {
-                cur->nbr *= 2024;
-                cur = cur->next;
-            }
-        }
-        //printf("count - pre_count: %f\n", (double)count / pre_count);
-        average += (double)count / pre_count;
-        pre_count = count;
-    }
-    average /= (double)max;
-    printf("average: %f\n", average);
-
-    for (int i = 0; i < 75; i++)
-        estimate *= average;
-
-    //print_struc(head);
-    printf("count: %lld\n", count);
-    printf("estimate: %lld\n", estimate);
     
+    //long len = lenght_struc(head);
+    //pthread_t thread_id[len + 1];
+
+    pthread_mutex_init(&mutex, NULL);
+
+    cur = head;
+    for (int i = 0; cur->next != NULL; i++) {
+        create_thread(cur->nbr, 75);
+        cur = cur->next;
+    }
+
+
+    //for (int i = 0; i < len; i++) {
+        //pthread_join(thread_id[i], NULL);
+    //}
+
+    printf("count: %ld\n", count);
 
 	return 0;
 }