06:00
0
student
12:00
0
06:00
2
12:00
1
08:00
2
02:00
2
11:00
3
16:00
1
10:00
2
07:00
0
21:00
11
07:00
1
08:00
1
05:00
0
06:00
1
16:00
0
12:00
8
00:53
2
18:00
0
10:00
4