| Author | ccsco | Created | 2009-07-01 |
| Difficulty | 21 kyu (history) | Source | problem book (Takao Shinji) |
| AVG solve time | 27 sec | Stars | 4.22 (27 votes) |
| User attempts | 4635 / 9411 | Collections | Basic Shape |
| Genre | life and death ⓒ | Your attempts | N/A |
| Similar problems | |||
| Created | 2009-07-01 | ||
| Source | problem book (Takao Shinji) | ||
| Stars | 4.22 (27 votes) | ||
| Collections | Basic Shape | ||
| Your attempts | N/A | ||