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[swift] ๋ฐฑ์ค€ - 11727๋ฒˆ: 2×n ํƒ€์ผ๋ง 2 ๋ณธ๋ฌธ

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[swift] ๋ฐฑ์ค€ - 11727๋ฒˆ: 2×n ํƒ€์ผ๋ง 2

MUKER 2023. 4. 12. 16:12
 

11727๋ฒˆ: 2×n ํƒ€์ผ๋ง 2

2×n ์ง์‚ฌ๊ฐํ˜•์„ 1×2, 2×1๊ณผ 2×2 ํƒ€์ผ๋กœ ์ฑ„์šฐ๋Š” ๋ฐฉ๋ฒ•์˜ ์ˆ˜๋ฅผ ๊ตฌํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์„ ์ž‘์„ฑํ•˜์‹œ์˜ค. ์•„๋ž˜ ๊ทธ๋ฆผ์€ 2×17 ์ง์‚ฌ๊ฐํ˜•์„ ์ฑ„์šด ํ•œ๊ฐ€์ง€ ์˜ˆ์ด๋‹ค.

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๋‚˜์˜ ํ’€์ด

var a = [0,1,3,5]
for i in 4...1000 {
    a.append((a[i-1] + a[i-2] * 2) % 10007)
}
print(a[Int(readLine()!)!])

ํ’€์ด ํ‚ค์›Œ๋“œ

DP
ํƒ€์ผ๋ง ๋ฌธ์ œ