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| Author |
santa c
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| Difficulty | 23 kyu (history) | ||
| AVG solve time | 29 sec | ||
| User attempts | 9219 / 17927 | ||
| Genre | life and death ⓒ | ||
| Similar problems | |||
| Created | 2006-01-09 | ||
| Source | Problem 7921. | ||
| Stars | 4.53 (40 votes) | ||
| Collections | |||
| Your attempts | N/A | ||