[๋ฐฑ์ค€] 1976. ์—ฌํ–‰ ๊ฐ€์ž/Python - Gold4
ยท
Coding Test/Algorithms
โ“๋ฌธ์ œhttps://www.acmicpc.net/problem/1976์„ฑ๋Šฅ ์š”์•ฝ๋ฉ”๋ชจ๋ฆฌ: 32412 KB, ์‹œ๊ฐ„: 40 ms๋ถ„๋ฅ˜๊ทธ๋ž˜ํ”„ ์ด๋ก , ์ž๋ฃŒ ๊ตฌ์กฐ, ๊ทธ๋ž˜ํ”„ ํƒ์ƒ‰, ๋ถ„๋ฆฌ ์ง‘ํ•ฉ ๋ฌธ์ œ ์„ค๋ช…๋™ํ˜์ด๋Š” ์นœ๊ตฌ๋“ค๊ณผ ํ•จ๊ป˜ ์—ฌํ–‰์„ ๊ฐ€๋ ค๊ณ  ํ•œ๋‹ค. ํ•œ๊ตญ์—๋Š” ๋„์‹œ๊ฐ€ N๊ฐœ ์žˆ๊ณ  ์ž„์˜์˜ ๋‘ ๋„์‹œ ์‚ฌ์ด์— ๊ธธ์ด ์žˆ์„ ์ˆ˜๋„, ์—†์„ ์ˆ˜๋„ ์žˆ๋‹ค. ๋™ํ˜์ด์˜ ์—ฌํ–‰ ์ผ์ •์ด ์ฃผ์–ด์กŒ์„ ๋•Œ, ์ด ์—ฌํ–‰ ๊ฒฝ๋กœ๊ฐ€ ๊ฐ€๋Šฅํ•œ ๊ฒƒ์ธ์ง€ ์•Œ์•„๋ณด์ž. ๋ฌผ๋ก  ์ค‘๊ฐ„์— ๋‹ค๋ฅธ ๋„์‹œ๋ฅผ ๊ฒฝ์œ ํ•ด์„œ ์—ฌํ–‰์„ ํ•  ์ˆ˜๋„ ์žˆ๋‹ค. ์˜ˆ๋ฅผ ๋“ค์–ด ๋„์‹œ๊ฐ€ 5๊ฐœ ์žˆ๊ณ , A-B, B-C, A-D, B-D, E-A์˜ ๊ธธ์ด ์žˆ๊ณ , ๋™ํ˜์ด์˜ ์—ฌํ–‰ ๊ณ„ํš์ด E C B C D ๋ผ๋ฉด E-A-B-C-B-C-B-D๋ผ๋Š” ์—ฌํ–‰๊ฒฝ๋กœ๋ฅผ ํ†ตํ•ด ๋ชฉ์ ์„ ๋‹ฌ์„ฑํ•  ์ˆ˜ ์žˆ๋‹ค.๋„์‹œ๋“ค์˜ ๊ฐœ์ˆ˜์™€ ๋„์‹œ๋“ค ๊ฐ„์˜ ์—ฐ๊ฒฐ ์—ฌ๋ถ€๊ฐ€ ์ฃผ์–ด์ ธ ์žˆ๊ณ , ๋™..
[๋ฐฑ์ค€] 1717. ์ง‘ํ•ฉ์˜ ํ‘œํ˜„/Python - Gold5
ยท
Coding Test/Algorithms
โ“๋ฌธ์ œhttps://www.acmicpc.net/problem/1717์„ฑ๋Šฅ ์š”์•ฝ๋ฉ”๋ชจ๋ฆฌ: 77876 KB, ์‹œ๊ฐ„: 284 ms๋ถ„๋ฅ˜์ž๋ฃŒ ๊ตฌ์กฐ, ๋ถ„๋ฆฌ ์ง‘ํ•ฉ๋ฌธ์ œ ์„ค๋ช…์ดˆ๊ธฐ์— n+1n+1๊ฐœ์˜ ์ง‘ํ•ฉ {0},{1},{2},…,{n}{0},{1},{2},…,{n}์ด ์žˆ๋‹ค. ์—ฌ๊ธฐ์— ํ•ฉ์ง‘ํ•ฉ ์—ฐ์‚ฐ๊ณผ, ๋‘ ์›์†Œ๊ฐ€ ๊ฐ™์€ ์ง‘ํ•ฉ์— ํฌํ•จ๋˜์–ด ์žˆ๋Š”์ง€๋ฅผ ํ™•์ธํ•˜๋Š” ์—ฐ์‚ฐ์„ ์ˆ˜ํ–‰ํ•˜๋ ค๊ณ  ํ•œ๋‹ค.์ง‘ํ•ฉ์„ ํ‘œํ˜„ํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์„ ์ž‘์„ฑํ•˜์‹œ์˜ค.โœ๐Ÿปํ’€์ดhttps://yoongrammer.tistory.com/102 ์„œ๋กœ์†Œ ์ง‘ํ•ฉ(Disjoint Set) & ์œ ๋‹ˆ์˜จ ํŒŒ์ธ๋“œ(Union find)๋ชฉ์ฐจ์„œ๋กœ์†Œ ์ง‘ํ•ฉ(Disjoint Set) & ์œ ๋‹ˆ์˜จ ํŒŒ์ธ๋“œ(Union find)์„œ๋กœ์†Œ ์ง‘ํ•ฉ(Disjoint Set)Disjoint Set(์„œ๋กœ์†Œ ์ง‘ํ•ฉ, ๋ถ„๋ฆฌ ์ง‘ํ•ฉ)์ด๋ž€ ์„œ๋กœ..
[๋ฐฑ์ค€] 1197. ์ตœ์†Œ ์ŠคํŒจ๋‹ ํŠธ๋ฆฌ/Python - Gold4
ยท
Coding Test/Algorithms
โ“๋ฌธ์ œhttps://www.acmicpc.net/problem/1197์„ฑ๋Šฅ ์š”์•ฝKruskal, Python3โžก๏ธ๋ฉ”๋ชจ๋ฆฌ: 57288 KB, ์‹œ๊ฐ„: 264 msPrim, PyPy3โžก๏ธ๋ฉ”๋ชจ๋ฆฌ: 129144 KB, ์‹œ๊ฐ„: 380 ms๋ถ„๋ฅ˜์ตœ์†Œ ์ŠคํŒจ๋‹ ํŠธ๋ฆฌ, ๊ทธ๋ž˜ํ”„ ์ด๋ก ๋ฌธ์ œ ์„ค๋ช…๊ทธ๋ž˜ํ”„๊ฐ€ ์ฃผ์–ด์กŒ์„ ๋•Œ, ๊ทธ ๊ทธ๋ž˜ํ”„์˜ ์ตœ์†Œ ์ŠคํŒจ๋‹ ํŠธ๋ฆฌ๋ฅผ ๊ตฌํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์„ ์ž‘์„ฑํ•˜์‹œ์˜ค.์ตœ์†Œ ์ŠคํŒจ๋‹ ํŠธ๋ฆฌ๋Š”, ์ฃผ์–ด์ง„ ๊ทธ๋ž˜ํ”„์˜ ๋ชจ๋“  ์ •์ ๋“ค์„ ์—ฐ๊ฒฐํ•˜๋Š” ๋ถ€๋ถ„ ๊ทธ๋ž˜ํ”„ ์ค‘์—์„œ ๊ทธ ๊ฐ€์ค‘์น˜์˜ ํ•ฉ์ด ์ตœ์†Œ์ธ ํŠธ๋ฆฌ๋ฅผ ๋งํ•œ๋‹ค.โœ๐Ÿปํ’€์ด2024.11.29 - [Computer Science/Algorithms] - [Algorithms] ์ตœ์†Œ ์‹ ์žฅ ํŠธ๋ฆฌ (Minimum Spanning Tree) [Algorithms] ์ตœ์†Œ ์‹ ์žฅ ํŠธ๋ฆฌ (Minimum Spannin..
[๋ฐฑ์ค€] 13549. ์ˆจ๋ฐ”๊ผญ์งˆ3/Python - Gold5
ยท
Coding Test/Algorithms
โ“๋ฌธ์ œhttps://www.acmicpc.net/problem/13549์„ฑ๋Šฅ ์š”์•ฝ๋ฉ”๋ชจ๋ฆฌ: 115084 KB, ์‹œ๊ฐ„: 232 ms๋ถ„๋ฅ˜๊ทธ๋ž˜ํ”„ ์ด๋ก , ๊ทธ๋ž˜ํ”„ ํƒ์ƒ‰, ๋„ˆ๋น„ ์šฐ์„  ํƒ์ƒ‰, ์ตœ๋‹จ ๊ฒฝ๋กœ, ๋ฐ์ดํฌ์ŠคํŠธ๋ผ, 0-1 ๋„ˆ๋น„ ์šฐ์„  ํƒ์ƒ‰ ๋ฌธ์ œ ์„ค๋ช…์ˆ˜๋นˆ์ด๋Š” ๋™์ƒ๊ณผ ์ˆจ๋ฐ”๊ผญ์งˆ์„ ํ•˜๊ณ  ์žˆ๋‹ค. ์ˆ˜๋นˆ์ด๋Š” ํ˜„์žฌ ์  N(0 ≤ N ≤ 100,000)์— ์žˆ๊ณ , ๋™์ƒ์€ ์  K(0 ≤ K ≤ 100,000)์— ์žˆ๋‹ค. ์ˆ˜๋นˆ์ด๋Š” ๊ฑท๊ฑฐ๋‚˜ ์ˆœ๊ฐ„์ด๋™์„ ํ•  ์ˆ˜ ์žˆ๋‹ค. ๋งŒ์•ฝ, ์ˆ˜๋นˆ์ด์˜ ์œ„์น˜๊ฐ€ X์ผ ๋•Œ ๊ฑท๋Š”๋‹ค๋ฉด 1์ดˆ ํ›„์— X-1 ๋˜๋Š” X+1๋กœ ์ด๋™ํ•˜๊ฒŒ ๋œ๋‹ค. ์ˆœ๊ฐ„์ด๋™์„ ํ•˜๋Š” ๊ฒฝ์šฐ์—๋Š” 0์ดˆ ํ›„์— 2*X์˜ ์œ„์น˜๋กœ ์ด๋™ํ•˜๊ฒŒ ๋œ๋‹ค.์ˆ˜๋นˆ์ด์™€ ๋™์ƒ์˜ ์œ„์น˜๊ฐ€ ์ฃผ์–ด์กŒ์„ ๋•Œ, ์ˆ˜๋นˆ์ด๊ฐ€ ๋™์ƒ์„ ์ฐพ์„ ์ˆ˜ ์žˆ๋Š” ๊ฐ€์žฅ ๋น ๋ฅธ ์‹œ๊ฐ„์ด ๋ช‡ ์ดˆ ํ›„์ธ์ง€ ๊ตฌํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์„ ์ž‘์„ฑํ•˜์‹œ..
[๋ฐฑ์ค€] 11657. ํƒ€์ž„๋จธ์‹ /Python - Gold4
ยท
Coding Test/Algorithms
โ“๋ฌธ์ œhttps://www.acmicpc.net/problem/11657์„ฑ๋Šฅ ์š”์•ฝ๋ฉ”๋ชจ๋ฆฌ: 34456 KB, ์‹œ๊ฐ„: 788 ms๋ถ„๋ฅ˜๊ทธ๋ž˜ํ”„ ์ด๋ก , ์ตœ๋‹จ ๊ฒฝ๋กœ, ๋ฒจ๋งŒ–ํฌ๋“œ๋ฌธ์ œ ์„ค๋ช…N๊ฐœ์˜ ๋„์‹œ๊ฐ€ ์žˆ๋‹ค. ๊ทธ๋ฆฌ๊ณ  ํ•œ ๋„์‹œ์—์„œ ์ถœ๋ฐœํ•˜์—ฌ ๋‹ค๋ฅธ ๋„์‹œ์— ๋„์ฐฉํ•˜๋Š” ๋ฒ„์Šค๊ฐ€ M๊ฐœ ์žˆ๋‹ค. ๊ฐ ๋ฒ„์Šค๋Š” A, B, C๋กœ ๋‚˜ํƒ€๋‚ผ ์ˆ˜ ์žˆ๋Š”๋ฐ, A๋Š” ์‹œ์ž‘๋„์‹œ, B๋Š” ๋„์ฐฉ๋„์‹œ, C๋Š” ๋ฒ„์Šค๋ฅผ ํƒ€๊ณ  ์ด๋™ํ•˜๋Š”๋ฐ ๊ฑธ๋ฆฌ๋Š” ์‹œ๊ฐ„์ด๋‹ค. ์‹œ๊ฐ„ C๊ฐ€ ์–‘์ˆ˜๊ฐ€ ์•„๋‹Œ ๊ฒฝ์šฐ๊ฐ€ ์žˆ๋‹ค. C = 0์ธ ๊ฒฝ์šฐ๋Š” ์ˆœ๊ฐ„ ์ด๋™์„ ํ•˜๋Š” ๊ฒฝ์šฐ, C 1๋ฒˆ ๋„์‹œ์—์„œ ์ถœ๋ฐœํ•ด์„œ ๋‚˜๋จธ์ง€ ๋„์‹œ๋กœ ๊ฐ€๋Š” ๊ฐ€์žฅ ๋น ๋ฅธ ์‹œ๊ฐ„์„ ๊ตฌํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์„ ์ž‘์„ฑํ•˜์‹œ์˜ค.โœ๐Ÿปํ’€์ด๋ฒจ๋งŒ ํฌ๋“œ ์•Œ๊ณ ๋ฆฌ์ฆ˜์„ ์‚ฌ์šฉํ•œ๋‹ค. ์‚ฌ์ดํด์„ ํ™•์ธ์€ ์•„๋ž˜ ์‚ฌ์ดํŠธ๋ฅผ ์ฐธ๊ณ ํ•˜๋ฉด ๋œ๋‹ค.https://growth-coder.tistory.com/2..
[๋ฐฑ์ค€] 1504. ํŠน์ •ํ•œ ์ตœ๋‹จ ๊ฒฝ๋กœ/Python - Gold4
ยท
Coding Test/Algorithms
โ“๋ฌธ์ œhttps://www.acmicpc.net/problem/1504์„ฑ๋Šฅ ์š”์•ฝ๋ฉ”๋ชจ๋ฆฌ: 126204 KB, ์‹œ๊ฐ„: 376 ms๋ถ„๋ฅ˜๊ทธ๋ž˜ํ”„ ์ด๋ก , ์ตœ๋‹จ ๊ฒฝ๋กœ, ๋ฐ์ดํฌ์ŠคํŠธ๋ผ๋ฌธ์ œ ์„ค๋ช…๋ฐฉํ–ฅ์„ฑ์ด ์—†๋Š” ๊ทธ๋ž˜ํ”„๊ฐ€ ์ฃผ์–ด์ง„๋‹ค. ์„ธ์ค€์ด๋Š” 1๋ฒˆ ์ •์ ์—์„œ N๋ฒˆ ์ •์ ์œผ๋กœ ์ตœ๋‹จ ๊ฑฐ๋ฆฌ๋กœ ์ด๋™ํ•˜๋ ค๊ณ  ํ•œ๋‹ค. ๋˜ํ•œ ์„ธ์ค€์ด๋Š” ๋‘ ๊ฐ€์ง€ ์กฐ๊ฑด์„ ๋งŒ์กฑํ•˜๋ฉด์„œ ์ด๋™ํ•˜๋Š” ํŠน์ •ํ•œ ์ตœ๋‹จ ๊ฒฝ๋กœ๋ฅผ ๊ตฌํ•˜๊ณ  ์‹ถ์€๋ฐ, ๊ทธ๊ฒƒ์€ ๋ฐ”๋กœ ์ž„์˜๋กœ ์ฃผ์–ด์ง„ ๋‘ ์ •์ ์€ ๋ฐ˜๋“œ์‹œ ํ†ต๊ณผํ•ด์•ผ ํ•œ๋‹ค๋Š” ๊ฒƒ์ด๋‹ค.์„ธ์ค€์ด๋Š” ํ•œ๋ฒˆ ์ด๋™ํ–ˆ๋˜ ์ •์ ์€ ๋ฌผ๋ก , ํ•œ๋ฒˆ ์ด๋™ํ–ˆ๋˜ ๊ฐ„์„ ๋„ ๋‹ค์‹œ ์ด๋™ํ•  ์ˆ˜ ์žˆ๋‹ค. ํ•˜์ง€๋งŒ ๋ฐ˜๋“œ์‹œ ์ตœ๋‹จ ๊ฒฝ๋กœ๋กœ ์ด๋™ํ•ด์•ผ ํ•œ๋‹ค๋Š” ์‚ฌ์‹ค์— ์ฃผ์˜ํ•˜๋ผ. 1๋ฒˆ ์ •์ ์—์„œ N๋ฒˆ ์ •์ ์œผ๋กœ ์ด๋™ํ•  ๋•Œ, ์ฃผ์–ด์ง„ ๋‘ ์ •์ ์„ ๋ฐ˜๋“œ์‹œ ๊ฑฐ์น˜๋ฉด์„œ ์ตœ๋‹จ ๊ฒฝ๋กœ๋กœ ์ด๋™ํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์„ ์ž‘์„ฑํ•˜์‹œ์˜ค.โœ๐Ÿปํ’€์ด์šฐ์„  ์ฃผ์–ด์ง„..