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 | 求虫子爬行的步数的期望值。(公布答案) | 
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| 如果最初的想法不是荒谬的, 那么它就毫无希望. -阿尔伯特·爱因斯坦 | ||
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| The Answer to the Ultimate Question of Life, the Universe, and Everything  | ||
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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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