| Rev | Time | Changes | Operations |
|---|---|---|---|
| Log | |||
| 2 | 2012-05-05 03:12:36 | +1 -1 line(s) | [View this version, source] [Diff to previous] |
| fix the answer | |||
| 1 | 2011-09-20 13:32:11 | +25 -0 line(s) | [View this version, source] [Diff to current|previous] |
| added solution. | |||
| [Diff from epoch] | |||