23:00
0
student
06:00
2
10:00
11
07:00
4
08:00
12
05:00
2
05:00
2
15:00
12
02:00
6
06:00
1
05:00
2
01:17
0
06:00
1
13:00
1
10:00
1
13:00
5
10:00
6
05:00
4
11:00
2
13:00
3
