auto save

diy1.py

@@ -4,7 +4,7 @@ start_time= time.time()
 list1 = []
 for a in range(0, 1000):
     for b in range(0, 1000):
-        list1.insert(0, 0)
+        list1.append(0)
 
 end_time= time.time()
 result = end_time - start_time