回复：It's still not very clear to me

来源: 火球魔法 于 2008-10-09 18:38:58 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (46 bytes)
回答: good question and bad question 由 火球魔法 于 2008-10-09 15:45:22

Make the first step as small as you want. At

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