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Self-describing Sequence

›ฌธณดธฐ
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ธธฐ„:C(A,B,C), „ณตฅ :†’Œ(‚ฎŒ,ณดํ†ต,†’Œ),  ˆฒจ:2(1~4)

About Self-describingSequence

†”กœชฌ ณจ(Solomon Golomb)˜ žธฐธฐˆ  ˆ˜—ด <f(1), f(2), f(3), ... >€ ฐ k— Œ€ํ•ด kŠ” ˆซž€  •ํ™•ํ•˜ฒŒ f(k)ฒˆ “žฅํ•˜Š” †„„ €€Š” –‘˜  •ˆ˜กœ ตฌ„œ œ ํ•œ „ฐ†Œˆ˜—ดด‹ค. ด ˆ˜—ด˜ •ž €„„ ƒฐํ•ดณดฉด ‹คŒ ฐ™€ ‹ดŠ” ฒƒ„ •Œ ˆ˜ žˆ‹ค.
http://online-judge.uva.es/p/v100/10049img2.gif
–ด–ค ฐ’ nด –ดกŒ„ •Œ f(n)˜ ฐ’„ „‚ฐํ•˜Š” ํ”„กœทธžจ„ งŒ“ค–ด• ํ•œ‹ค.

Input

—ฌŸฌ ฐœ˜ ํ…ŒŠคํŠธ €ดŠค€ ž… ฅ  ˆ˜ žˆ‹ค. ฐ „งˆ‹ค ํ•˜‚˜”ฉ˜  •ˆ˜ nด ž… ฅ˜ฉฐ,  •ˆ˜ ํ•œ ฐœ€ ํ•˜‚˜˜ ํ…ŒŠคํŠธ €ดŠค ดฃฌ‹ค(1 โ‰ค n โ‰ค 2,000,000,000). nด 0ธ ํ…ŒŠคํŠธ €ดŠค€ ž… ฅ˜ฉด ž… ฅด ข…ฃŒ˜ฉฐ, ทธ €ดŠคŠ” ฒ˜ฆฌํ•˜€ •ŠŠ”‹ค.

Output

ฐ ํ…ŒŠคํŠธ €ดŠค— Œ€ํ•ด ํ•œ „— ํ•˜‚˜”ฉ f(n) ฐ’„ ถœ ฅํ•œ‹ค.

Sample Input

{{| 100
9999
123456
1000000000
0 |}}

Sample Output

{{| 21
356
1684
438744 |}}

ํ’€ด

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

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