About describe a time when you solved a difficult problem results of 10,000
04:31
05:07
10:54
10:12
04:35
03:37
07:58
09:32
02:12
08:24
04:07
10:24
10:44
02:28
04:30
07:11
16:01
02:16
10:50
14:14
01:12
03:12
13:59
05:27
10:32
00:42
01:00
03:30
05:41
13:13
69:35
13:10
03:19
02:12
56:42
07:53
02:44
14:10
17:05
06:15
09:34
01:58
05:28
03:27
14:01
15:17