About extremum problems results of 10,000
12:09
11:06
09:07
10:33
11:37
14:01
11:11
10:21
10:15
09:25
13:21
11:18
10:23
09:16
10:37
14:07
11:42
11:35
09:42
10:01
09:56
10:43
09:11
09:17
10:46
11:04
11:44
15:49
10:53
09:27
12:59
09:01
12:39
09:53
11:37
18:30
15:46
10:02
07:57
12:29
09:03
07:13
12:10
11:21
08:11
12:03