75640| 3
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和倍集问题 |
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发表于 2009-8-1 19:42:26
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发表于 2013-5-13 20:52:50
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19events = 644days
PB (2 3 4 5)B = 1200seconds 北大魔方爱好者QQ群74893945 mf8最少步讨论群:RP与公式的绝佳配合QQ群5652935 |
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发表于 2013-5-19 17:02:18
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