History of question #248219
| When | Who | Action | New State |
|---|---|---|---|
| Olivier Mattelaer | Answer | Answered | |
| Haifeng Li | Reopen | Open | |
| Olivier Mattelaer | Answer | Answered | |
| Haifeng Li | Reopen | Open | |
| Olivier Mattelaer | Answer | Answered | |
| Haifeng Li | Confirm | Solved | |
| Haifeng Li | Confirm | Solved |
