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2006/09/28
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ϴ. Ѱ ƶ ︮±. 60ֳ ⸮ ۵ ̰, 29 ȸ μ ⿡ ^^ -- Google Ի ϴ. Ÿ ǿ ̷ Ի ϴ ϴ ̶׿. â ̱ ̶ մϴ. n ؼ 1 n ̿ 1 Ƚ Ÿ Լ f(n)̶ Ѵ. f(13)=6̴. f(n)=n Ǵ ù° 1̴. ι° ΰ? Ÿ ʵ 3-4г ̵ Ǯ . 1 100 1 °? ϴ ׷ Դϴ.  1 1ǰ ŭ ɴϴ. 1 ϱ? ϴ ˴ϴ. ݸ ϸ 踦 ã ֽϴ. F(99)= 20 1-99 1 20 F(999)= 300 1-999 1 300 F (9999)= 4000 1-9999 1 4000 ˴ϴ. ϸ F(99999)= 50000 F(999999)=600000 F(9999999)=7000000 F(99999999)=80000000 F(999999999)=900000000 ǿ ´ ? ? е鵵 Ӹ ѹ ^^ C-MATH= ߽
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