0
teacher
0
0
1
0
0
0
0
0
1
0
0
0
0
0
3
0
0
1
07:00
6
07:00
2
2
3
0
3
07:00
0
10:00
2
10:00
6
3
0
2
0
07:00
0
07:00
2
08:00
5
0
05:00
1
06:00
3
5
4