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| Author |
ccsco
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| Difficulty | 21 kyu (history) | ||
| AVG solve time | 26 sec | ||
| User attempts | 4841 / 9766 | ||
| Genre | life and death ⓒ | ||
| Similar problems | |||
| Created | 2009-07-01 | ||
| Source | problem book (Takao Shinji) | ||
| Stars | 4.24 (33 votes) | ||
| Collections | |||
| Your attempts | N/A | ||