optimize for performance

32:28

29:02

36:29

10:06

11:13

13:23

6:25

8:02

10:57

8:17

8:04

26:38

9:11

15:27

17:40

10:30

17:08

16:37

39:23

18:19

8:53

9:03

7:35

24:11

15:24

9:40

9:46

18:04

13:28

12:21

3:55

13:57

27:07

3:03

13:03

29:11

43:38

4:51

20:09

11:42

11:06

4:50

19:36

44:30

12:57

5:30

12:58

6:30

6:43

7:50

8:01

8:45

5:03

40:16

9:27

8:12

9:36

15:54

14:09

28:16