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| Author |
santa c
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| Difficulty | 12 kyu (history) | ||
| AVG solve time | 50 sec | ||
| User attempts | 1887 / 5026 | ||
| Genre | tesuji | ||
| Similar problems | |||
| Created | 2011-08-29 | ||
| Source | Problem 15171 | ||
| Stars | 2.33 (30 votes) | ||
| Collections | |||
| Your attempts | N/A | ||