05:00
0
student
06:00
0
06:00
0
05:00
0
12:00
0
08:43
1
10:00
2
10:00
2
06:00 1
06:00 0
10:00
1
10:00
3
10:00
5
08:46
6
11:00
4
08:52
5
24:40
0
07:24
2
08:30
2