History of question #702750
| When | Who | Action | New State |
|---|---|---|---|
| Jan Stránský | Answer | Answered | |
| 孙灿 | Comment | Answered | |
| Jan Stránský | Request for more information | Answered | |
| 孙灿 | Reopen | Open | |
| Jan Stránský | Answer | Answered | |
| 孙灿 | Reopen | Open | |
| Jan Stránský | Answer | Answered | |
| 孙灿 | Comment | Answered | |
| Jan Stránský | Answer | Answered | |
| 孙灿 | Confirm | Solved |
