02:00 40
student
02:00 12:31
40
10:00
20
13:30
5
01:54
6
05:41
3
40:28
24
25:50
11
07:00
11
08:00
19
12:19
7
12:34
10
05:35
10
06:31
9
06:06
12
10:02
12