Greedy Teachers

3
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17:35
12:56
04:50
35:13
06:00
14:08
15:38
26:18
13:15
17:30
37:29
10:00
28:45
12:12
30:07
20:59
28:13
07:59
35:13
15:21
09:42
07:57
04:00
10:02
13:25
10:45
37:45
16:16
06:41
05:15
08:00
47:52
10:16
11:24
30:39
06:00
12:49
05:30
12:09
10:01