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Self-describing Sequence

›๋ฌธ๋ณด๊ธฐ
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ธ๊ธฐ๋„:C(A,B,C), „๊ณต๋ฅ :๋†’Œ(๋‚ฎŒ,๋ณด†ต,๋†’Œ), ๋ ˆ๋ฒจ:2(1~4)

About Self-describingSequence

†”๋กœ๋ชฌ ๊ณจ๋ก(Solomon Golomb)˜ ž๊ธฐ๊ธฐˆ  ˆ˜—ด <f(1), f(2), f(3), ... >€ ๊ฐ k— ๋Œ€•ด k๋ผ๋Š” ˆž๊ฐ€  •™••˜๊ฒŒ f(k)๋ฒˆ ๋“žฅ•˜๋Š” †„„ ๊ฐ€ง€๋Š” –‘˜  •ˆ˜๋กœ ๊ตฌ„๋œ œ ผ•œ ๋น„๊ฐ†Œˆ˜—ดด๋‹ค. ด ˆ˜—ด˜ •ž ๋ถ€๋ถ„„ ƒ๊ฐ•ด๋ณด๋ฉด ๋‹คŒ๊ณผ ๊ฐ™€ ‹ด๋ผ๋Š” ๊ฒƒ„ •Œ ˆ˜ žˆ๋‹ค.
http://online-judge.uva.es/p/v100/10049img2.gif
–ด๋–ค ๊ฐ’ nด ฃผ–ดกŒ„ ๋•Œ f(n)˜ ๊ฐ’„ ๊ณ„‚ฐ•˜๋Š” ”„๋กœ๊ทธ๋žจ„ ๋งŒ๋“ค–ด•ผ •œ๋‹ค.

Input

—ฌ๋Ÿฌ ๊ฐœ˜ …ŒŠคŠธ ผ€ดŠค๊ฐ€ ž…๋ ฅ๋  ˆ˜ žˆ๋‹ค. ๊ฐ „๋งˆ๋‹ค •˜๋‚˜”ฉ˜  •ˆ˜ nด ž…๋ ฅ๋˜๋ฉฐ,  •ˆ˜ •œ ๊ฐœ๊ฐ€ •˜๋‚˜˜ …ŒŠคŠธ ผ€ดŠค๋ฅผ ด๋ฃฌ๋‹ค(1 โ‰ค n โ‰ค 2,000,000,000). nด 0ธ …ŒŠคŠธ ผ€ดŠค๊ฐ€ ž…๋ ฅ๋˜๋ฉด ž…๋ ฅด ข…๋ฃŒ๋˜๋ฉฐ, ๊ทธ ผ€ดŠค๋Š” ฒ˜๋ฆฌ•˜ง€ •Š๋Š”๋‹ค.

Output

๊ฐ …ŒŠคŠธ ผ€ดŠค— ๋Œ€•ด •œ „— •˜๋‚˜”ฉ f(n) ๊ฐ’„ ถœ๋ ฅ•œ๋‹ค.

Sample Input

{{| 100
9999
123456
1000000000
0 |}}

Sample Output

{{| 21
356
1684
438744 |}}

’€ด

ž‘„ž ‚ฌšฉ–ธ–ด ๊ฐœ๋ฐœ‹œ๊ฐ„ ฝ”๋“œ
๋ฌธ๋ณดฐฝ C++ 2‹œ๊ฐ„ Self-describingSequence/๋ฌธ๋ณดฐฝ
™ฉžฌ„  Java 2‹œ๊ฐ„ Self-describingSequence/™ฉžฌ„ 
1002 Python 1‹œ๊ฐ„ 40๋ถ„ Self-describingSequence/1002
shon matlab 1ฐจ : 1‹œ๊ฐ„ 10๋ถ„, 2ฐจ : 3‹œ๊ฐ„ Self-describingSequence/shon
กฐ˜„ƒœ C++ ? Self-describingSequence/กฐ˜„ƒœ

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