History of question #224780
| When | Who | Action | New State |
|---|---|---|---|
| Jan Blechta | Answer | Answered | |
| Houdong Hu | Comment | Answered | |
| Houdong Hu | Comment | Answered | |
| Houdong Hu | Comment | Answered | |
| Houdong Hu | Reopen | Open | |
| Jan Blechta | Answer | Answered | |
| Jan Blechta | Answer | Answered | |
| Jan Blechta | Answer | Answered | |
| Jan Blechta | Answer | Answered | |
| Houdong Hu | Confirm | Solved |
