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โœจ SSAFY Algorithm Study โœจ


๐Ÿ”ฅ Member

  • ๊ณ ๋™์šฐ
  • ๊น€๋ฏผ์ฃผ
  • ๊น€์„ฑํ›ˆ
  • ๊น€ํ˜œ๊ฒฝ
  • ์ •ํ•˜๋ฆฐ
  • ์ง€ํ•œ์–ผ

๐ŸŽฏ Goal of Study

  • SW ์—ญ๋Ÿ‰ ํ…Œ์ŠคํŠธ Bํ˜• ํ•ฉ๊ฒฉ์„ ์œ„ํ•œ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ์—ญ๋Ÿ‰ ๊ฐ•ํ™”
  • ๊ธฐ์—… ์ฝ”๋”ฉํ…Œ์ŠคํŠธ ๊ฒฝํ—˜์„ ํ†ตํ•ด ์ทจ์—… ์—ญ๋Ÿ‰ ๊ฐ•ํ™”

๐Ÿ“ Rules

  1. ๋งค์ฃผ ์›”์š”์ผ ์ธ๋‹น ๋ฌธ์ œ 1๊ฐœ์”ฉ ์„ ์ •
    • ๋‚œ์ด๋„๋Š” ๋ฐฑ์ค€ ๊ณจ๋“œ ์ด์ƒ, SWEA D3 ์ด์ƒ
  2. ๋งค์ฃผ ์ผ์š”์ผ๊นŒ์ง€ ๋ฌธ์ œ ํ’€์ด ํ›„ ์†Œ์Šค ์ฝ”๋“œ ์—…๋กœ๋“œ
    • ๊ฐ์ž Forkํ•œ ๊ฐœ์ธ ์ €์žฅ์†Œ์—์„œ Commit
    • ํ•ด๋‹น ์ฃผ์ฐจ์˜ ๋ฌธ์ œ๋ฅผ ๋ชจ๋‘ Commitํ•˜๊ณ  Pull Request
  3. ๋งค์ฃผ ์›”์š”์ผ ์˜คํ”„๋ผ์ธ ์Šคํ„ฐ๋”” ํ™œ๋™ ์ง„ํ–‰
    • ์ง€๋‚œ ์ฃผ์ฐจ์˜ ๋ฌธ์ œ์— ๋Œ€ํ•œ ์ฝ”๋“œ๋ฆฌ๋ทฐ ์ง„ํ–‰
    • ๋ฌธ์ œ์—์„œ ๋‹ค๋ฃจ์–ด์ง„ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ๋ณต์Šต
    • ๋‹ค๋ฅธ ์Šคํ„ฐ๋””์›์˜ ํ’€์ด ๋ฐฉ์‹์œผ๋กœ๋„ ๋ฌธ์ œ ํ’€๊ธฐ
    • ๊ธฐ๋ณธ์€ ์˜คํ”„๋ผ์ธ์œผ๋กœํ•˜๋ฉฐ, ๋ถˆ๊ฐ€๋Šฅํ•  ๊ฒฝ์šฐ ํ™”์ƒ ํšŒ์˜๋กœ ์ง„ํ–‰
  4. ๋ชจ๋ฐ”์ผ ์–ดํ”Œ๋กœ ํ•™์Šต๋Ÿ‰ ์ฒดํฌ
    • ์•Œ๊ณ ๋ฆฌ์ฆ˜ ์ด์™ธ์˜ ๊ณต๋ถ€์—๋„ ํƒ€์ด๋จธ ์‹œ๊ฐ„ ์ ์šฉ ๊ฐ€๋Šฅ (๊ณผ์ œ, ์‹œํ—˜ ์ค€๋น„ ๋“ฑ)
    • ์ผ์ฃผ์ผ 10์‹œ๊ฐ„ ๋ฏธ๋‹ฌ์ผ ๊ฒฝ์šฐ ๋ฒŒ๊ธˆ!๐Ÿ˜™
  5. ์ค‘๊บพ๋งˆ...

๐Ÿ”— Problem Sites

Baekjoon Online Judge

SW Expert Academy

Programmers


โœ๏ธ Solutions

NO. Problem Solution Remarks
Week 1
[SWEA] 1244 [D3] ์ตœ๋Œ€ ์ƒ๊ธˆ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Greedy, Brute Force
[SWEA] 2806 [D3] N-Queen ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Depth First Search
[SWEA] 5215 [D3] ํ–„๋ฒ„๊ฑฐ ๋‹ค์ด์–ดํŠธ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ 0/1 Knapsack
[SWEA] 7853 [D3] ์˜คํƒ€ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ String
[BOJ] 1874 ์Šคํƒ ์ˆ˜์—ด ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Stack
Week 2
[BOJ] 1107 ๋ฆฌ๋ชจ์ปจ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Depth First Search
[BOJ] 1132 ํ•ฉ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Greedy
[BOJ] 2644 ์ดŒ์ˆ˜๊ณ„์‚ฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Depth First Search
[BOJ] 3190 ๋ฑ€ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Implementation
[BOJ] 9251 LCS ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Dynamic Programming
Week 3
[BOJ] 1068 ํŠธ๋ฆฌ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Tree, Graph
[BOJ] 1780 ์ข…์ด์˜ ๊ฐœ์ˆ˜ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Recursion
[BOJ] 2014 ์†Œ์ˆ˜์˜ ๊ณฑ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Priority Queue, Math
[BOJ] 2470 ๋‘ ์šฉ์•ก ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Sorting, Two Pointer
[BOJ] 14699 ๊ด€์•…์‚ฐ ๋“ฑ์‚ฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Graph, Dynamic Programming
Week 4
[BOJ] 1747 ์†Œ์ˆ˜&ํŒฐ๋ฆฐ๋“œ๋กฌ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Sieve of Eratosthenes
[BOJ] 1916 ์ตœ์†Œ ๋น„์šฉ ๊ตฌํ•˜๊ธฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Graph, Dijkstra
[BOJ] 2805 ๋‚˜๋ฌด ์ž๋ฅด๊ธฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Binary Search
[BOJ] 2879 ์ฝ”๋”ฉ์€ ์˜ˆ์˜๊ฒŒ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Greedy
[BOJ] 17404 RGB๊ฑฐ๋ฆฌ 2 ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ DP
Week 5
[PRO] 92342 [Lv.2] ์–‘๊ถ๋Œ€ํšŒ (2022 KAKAO) ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ DFS, Backtracking
[BOJ] 1043 ๊ฑฐ์ง“๋ง ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Disjoint Set, Bit Masking
[BOJ] 2667 ๋‹จ์ง€๋ฒˆํ˜ธ๋ถ™์ด๊ธฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Depth First Search, Breadth First Search
[BOJ] 10164 ๊ฒฉ์ž์ƒ์˜ ๊ฒฝ๋กœ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Dynamic Programming, Depth First Search
[BOJ] 17135 ์บ์Šฌ ๋””ํŽœ์Šค ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Implementation
Week 6
[BOJ] 1700 ๋ฉ€ํ‹ฐํƒญ ์Šค์ผ€์ค„๋ง ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Greedy
[BOJ] 2565 ์ „๊นƒ์ค„ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Dynamic Programming, Backtracking
[BOJ] 7662 ์ด์ค‘ ์šฐ์„ ์ˆœ์œ„ ํ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Tree Map
[BOJ] 10830 ํ–‰๋ ฌ ์ œ๊ณฑ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Divide and Conquer
[BOJ] 17069 ํŒŒ์ดํ”„ ์˜ฎ๊ธฐ๊ธฐ 2 ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Dynamic Programming
Week 7
[BOJ] 2042 ๊ตฌ๊ฐ„ ํ•ฉ ๊ตฌํ•˜๊ธฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Segment Tree
[BOJ] 2098 ์™ธํŒ์› ์ˆœํšŒ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Dynamic Programming, Bit Masking
[BOJ] 10775 ๊ณตํ•ญ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Greedy, Disjoint Set
[BOJ] 14502 ์—ฐ๊ตฌ์†Œ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Brute Force, Breadth First Search
[BOJ] 14719 ๋น—๋ฌผ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Implementation
Week 8
[BOJ] 1261 ์•Œ๊ณ ์ŠคํŒŸ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Breadth First Search, Dijkstra
[BOJ] 2206 ๋ฒฝ ๋ถ€์ˆ˜๊ณ  ์ด๋™ํ•˜๊ธฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Breadth First Search
[BOJ] 2638 ์น˜์ฆˆ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Breadth First Search
[BOJ] 9077 ์ง€๋ขฐ์ œ๊ฑฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ Prefix Sum
[BOJ] 12904 A์™€ B ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•œ์–ผ String
Week 9
[PRO] 42627 [Lv.3] ๋””์Šคํฌ ์ปจํŠธ๋กค๋Ÿฌ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Priority Queue
[BOJ] 2342 Dance Dance Revolution ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Dynamic Programming
[BOJ] 7432 ๋””์Šคํฌ ํŠธ๋ฆฌ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Trie, Tree Map
[BOJ] 11726 2ร—n ํƒ€์ผ๋ง ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Dynamic Programming
[BOJ] 20437 ๋ฌธ์ž์—ด ๊ฒŒ์ž„ 2 ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ String
[BOJ] 21317 ์ง•๊ฒ€๋‹ค๋ฆฌ ๊ฑด๋„ˆ๊ธฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Dynamic Programming
Week 10
[PRO] 12979 [Lv.3] ๊ธฐ์ง€๊ตญ ์„ค์น˜ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Greedy
[PRO] 60060 [Lv.4] ๊ฐ€์‚ฌ ๊ฒ€์ƒ‰ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Trie, Binary Search
[BOJ] 9935 ๋ฌธ์ž์—ด ํญ๋ฐœ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ String, Stack
[BOJ] 12015 ๊ฐ€์žฅ ๊ธด ์ฆ๊ฐ€ํ•˜๋Š” ๋ถ€๋ถ„ ์ˆ˜์—ด 2 ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ LIS, Binary Search
[BOJ] 19623 ํšŒ์˜์‹ค ๋ฐฐ์ • 4 ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Dynamic Programming, Binary Search
[BOJ] 20056 ๋งˆ๋ฒ•์‚ฌ ์ƒ์–ด์™€ ํŒŒ์ด์–ด๋ณผ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Implementation
Week 11
[SWEA] 2382 [Test] ๋ฏธ์ƒ๋ฌผ ๊ฒฉ๋ฆฌ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Implementation
[SWEA] 4193 [D4] ์ˆ˜์˜๋Œ€ํšŒ ๊ฒฐ์Šน์ „ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Implementation
[BOJ] 1162 ๋„๋กœํฌ์žฅ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Dijkstra
[BOJ] 1956 ์šด๋™ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Floyd-Warshall
[BOJ] 11657 ํƒ€์ž„๋จธ์‹  ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Bellmen-Ford
[BOJ] 18405 ๊ฒฝ์Ÿ์  ์ „์—ผ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Implementation
Week 12
[PRO] 42579 [Lv.3] ๋ฒ ์ŠคํŠธ์•จ๋ฒ” ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Hash map
[BOJ] 1379 ๊ฐ•์˜์‹ค 2 ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Priority Queue
[BOJ] 1863 ์Šค์นด์ด๋ผ์ธ ์‰ฌ์šด๊ฑฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Stack
[BOJ] 2056 ์ž‘์—… ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Queue
[BOJ] 2812 ํฌ๊ฒŒ ๋งŒ๋“ค๊ธฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Deque, Stack
[BOJ] 14698 ์ „์ƒํ–ˆ๋”๋‹ˆ ์Šฌ๋ผ์ž„ ์—ฐ๊ตฌ์ž์˜€๋˜ ๊ฑด์— ๋Œ€ํ•˜์—ฌ (Hard) ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Priority Queue
Week 13
[PRO] 42861 [Lv.3] ์„ฌ ์—ฐ๊ฒฐํ•˜๊ธฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Greedy
[BOJ] 2904 ์ˆ˜ํ•™์€ ๋„ˆ๋ฌด ์‰ฌ์›Œ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Math, Sieve of Eratosthenes
[BOJ] 8980 ํƒ๋ฐฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Greedy
[BOJ] 11967 ๋ถˆ์ผœ๊ธฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Breadth First Search
[BOJ] 14908 ๊ตฌ๋‘ ์ˆ˜์„ ๊ณต ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Greedy
[BOJ] 14927 ์ „๊ตฌ ๋„๊ธฐ ๋™์šฐ ๋ฏผ์ฃผ ์„ฑํ›ˆ ํ˜œ๊ฒฝ ํ•˜๋ฆฐ ํ•œ์–ผ Greedy, Bit Masking

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