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- 2006/09/28
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ϴ. Ѱ ƶ ︮±.
60ֳ ⸮ ۵ ̰, 29 ȸ μ ^^
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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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