10:00
2
teacher
06:00
1
30:00
2
05:00
1
08:00
3
06:00
1
08:00
2
11:00
1
06:00
1
06:00
1
05:00
4
06:00
3
05:00
1
08:00
1
14:00
7
22:00
1
12:00
2
23:00
0
05:00
2
08:00
1