History of question #647257
| When | Who | Action | New State |
|---|---|---|---|
| Rikkert Frederix | Answer | Answered | |
| Lailin Xu | Reopen | Open | |
| Rikkert Frederix | Answer | Answered | |
| Lailin Xu | Comment | Answered | |
| Olivier Mattelaer | Answer | Answered | |
| Lailin Xu | Confirm | Solved | |
| Lailin Xu | Reopen | Open | |
| Rikkert Frederix | Answer | Answered | |
| Lailin Xu | Comment | Answered |
