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\ud504\ub85c\uadf8\ub798\ubc0d \uc778\ud130\ubdf0\uc640 \uc54c\uace0\ub9ac\uc998 \uc2dc\ud5d8\uc5d0\uc11c \uc790\uc8fc \ub4f1\uc7a5\ud558\ub294 \uc815\ub82c \uc54c\uace0\ub9ac\uc998\uc785\ub2c8\ub2e4. \uc774 \uae00\uc5d0\uc11c\ub294 \ud035 \uc815\ub82c\uc758 \uac1c\ub150, \uad6c\ud604\ubc29\ubc95, \uc2dc\uac04\ubcf5\uc7a1\ub3c4 \ubc0f \uc608\uc81c\ubb38\uc81c\ub97c \ud1b5\ud574 \ud035 \uc815\ub82c\uc744 \ub9c8\uc2a4\ud130\ud574\ubcf4\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4. 1. \ud035 \uc815\ub82c \uac1c\uc694 \ud035 \uc815\ub82c\uc740 \ubd84\ud560 \uc815\ubcf5 \uc54c\uace0\ub9ac\uc998\uc758 \uc77c\uc885\uc73c\ub85c, \ub370\uc774\ud130\ub97c \ud6a8\uc728\uc801\uc73c\ub85c \uc815\ub82c\ud558\ub294\u2026","rel":"","context":""C++ \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c"\uc5d0\uc11c","block_context":{"text":"C++ \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c","link":"https:\/\/atmokpo.com\/w\/category\/c-%ec%bd%94%eb%94%a9%ed%85%8c%ec%8a%a4%ed%8a%b8-%ea%b0%95%ec%a2%8c-2\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":27308,"url":"https:\/\/atmokpo.com\/w\/27308\/","url_meta":{"origin":27527,"position":4},"title":"C# \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \ucd5c\uc18c \uacf5\ud1b5 \uc870\uc0c1 \uad6c\ud558\uae30 2","author":"root","date":"2024\ub144 10\uc6d4 27\uc77c","format":false,"excerpt":"\uc791\uc131\uc790: \uc870\uad11\ud615 \uc791\uc131\uc77c: 2024\ub144 11\uc6d4 26\uc77c \uc18c\uac1c \ubcf8 \uac15\uc88c\uc5d0\uc11c\ub294 C# \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\ub97c \uc0ac\uc6a9\ud558\uc5ec '\ucd5c\uc18c \uacf5\ud1b5 \uc870\uc0c1(LCA; Lowest Common Ancestor)' \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \ub2e4\ub8f0 \uac83\uc785\ub2c8\ub2e4. \ucd5c\uc18c \uacf5\ud1b5 \uc870\uc0c1\uc740 \uc774\uc9c4 \ud2b8\ub9ac\uc5d0\uc11c \ub450 \ub178\ub4dc\uc758 \uacf5\ud1b5 \uc870\uc0c1 \uc911 \uac00\uc7a5 \uae4a\uc740 \ub178\ub4dc\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4. \ud2b9\uc815 \uc54c\uace0\ub9ac\uc998 \ubc0f \uc790\ub8cc \uad6c\uc870\ub97c \ud65c\uc6a9\ud558\uc5ec \uc774 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \uacfc\uc815\uc744 \uc790\uc138\ud788\u2026","rel":"","context":""C# \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c"\uc5d0\uc11c","block_context":{"text":"C# \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c","link":"https:\/\/atmokpo.com\/w\/category\/c-%ec%bd%94%eb%94%a9%ed%85%8c%ec%8a%a4%ed%8a%b8-%ea%b0%95%ec%a2%8c\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":28488,"url":"https:\/\/atmokpo.com\/w\/28488\/","url_meta":{"origin":27527,"position":5},"title":"\ucf54\ud2c0\ub9b0 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc218 \uc815\ub82c\ud558\uae30","author":"root","date":"2024\ub144 10\uc6d4 27\uc77c","format":false,"excerpt":"\uc791\uc131\uc790: \uc870\uad11\ud615 \uc791\uc131\uc77c: 2024\ub144 11\uc6d4 26\uc77c \uc11c\ub860 \ucf54\ub529\ud14c\uc2a4\ud2b8\uc5d0\uc11c\ub294 \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ud480\uc774 \ub2a5\ub825\uc744 \ud3c9\uac00\ud558\uae30 \uc704\ud574 \ub2e4\uc591\ud55c \ubb38\uc81c\ub4e4\uc774 \ucd9c\uc81c\ub429\ub2c8\ub2e4. \uadf8 \uc911\uc5d0\uc11c\ub3c4 \"\uc218 \uc815\ub82c\ud558\uae30\" \ubb38\uc81c\ub294 \uae30\ubcf8\uc801\uc774\uba74\uc11c\ub3c4 \uc911\uc694\ud55c \uc54c\uace0\ub9ac\uc998 \uc0ac\uace0\ub825\uc744 \uc694\uad6c\ud558\ub294 \ubb38\uc81c\uac00 \ub429\ub2c8\ub2e4. \uc774 \ubb38\uc81c\ub97c \ud1b5\ud574 \uae30\ubcf8\uc801\uc778 \uc815\ub82c \uc54c\uace0\ub9ac\uc998\uc744 \uc774\ud574\ud558\uace0, \ucf54\ud2c0\ub9b0 \uc5b8\uc5b4\uc758 \ubb38\ubc95\uc5d0 \uc775\uc219\ud574\uc9c0\ub294 \uae30\ud68c\ub97c \uc81c\uacf5\ud558\uace0\uc790 \ud569\ub2c8\ub2e4. \ubb38\uc81c \uc124\uba85 \uc8fc\uc5b4\uc9c4 \uc815\uc218 N\uac1c\ub97c \uc624\ub984\ucc28\uc21c\uc73c\ub85c \uc815\ub82c\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc744\u2026","rel":"","context":""\ucf54\ud2c0\ub9b0 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c"\uc5d0\uc11c","block_context":{"text":"\ucf54\ud2c0\ub9b0 \ucf54\ub529\ud14c\uc2a4\ud2b8 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\ubb38\uc81c \uc124\uba85<\/h2>\n

\n 2*N \ud0c0\uc77c \ucc44\uc6b0\uae30 \ubb38\uc81c\ub294 \uc8fc\uc5b4\uc9c4 2xN \ud06c\uae30\uc758 \uacf5\uac04\uc744 1×2 \ud06c\uae30\uc758 \ud0c0\uc77c\ub85c \ucc44\uc6b0\ub294 \ubc29\ubc95\uc758 \uc218\ub97c \uad6c\ud558\ub294 \ubb38\uc81c\uc785\ub2c8\ub2e4.
\n \ud0c0\uc77c\uc740 \uac00\ub85c\ub85c \ub610\ub294 \uc138\ub85c\ub85c \ubc30\uce58\ud560 \uc218 \uc788\uc73c\uba70, \uc804\uccb4 2xN \uacf5\uac04\uc744 \uc644\uc804\ud788 \ucc44\uc6cc\uc57c \ud569\ub2c8\ub2e4.
\n \uc774 \ubb38\uc81c\uc758 \ud575\uc2ec\uc740 \uc870\ud569\uc758 \uc218\ub97c \uacc4\uc0b0\ud558\ub294 \uac83\uc774\uba70, \ub3d9\uc801 \ud504\ub85c\uadf8\ub798\ubc0d(Dynamic Programming) \uae30\ubc95\uc744 \ud1b5\ud574 \ud574\uacb0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n <\/p>\n<\/section>\n

\uc785\ub825 \ud615\uc2dd<\/h2>\n

\n \uc815\uc218 N\uc774 \uc8fc\uc5b4\uc9d1\ub2c8\ub2e4. (1 \u2264 N \u2264 30)\n <\/p>\n<\/section>\n

\ucd9c\ub825 \ud615\uc2dd<\/h2>\n

\n 2xN \uacf5\uac04\uc744 \ucc44\uc6b0\ub294 \ubc29\ubc95\uc758 \uc218\ub97c \uc815\uc218\ub85c \ucd9c\ub825\ud569\ub2c8\ub2e4.\n <\/p>\n<\/section>\n

\ubb38\uc81c \ud480\uc774 \uacfc\uc815<\/h2>\n
\n 2*N \ud0c0\uc77c \ucc44\uc6b0\uae30 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud574\uc11c, \uc6b0\ub9ac\ub294 \uba87 \uac00\uc9c0 \uc608\uc81c\ub97c \ud1b5\ud574 \ubb38\uc81c\uc758 \ud328\ud134\uc744 \ucc3e\uc544\uc57c \ud569\ub2c8\ub2e4.
\n \uba3c\uc800 N\uc774 1\uc77c \ub54c\uc640 N\uc774 2\uc77c \ub54c\uc758 \uacbd\uc6b0\ub97c \uc0dd\uac01\ud574\ubd05\uc2dc\ub2e4.\n <\/p>\n

\uc608\uc81c<\/h3>\n

N = 1:\n

1\uac00\uc9c0 \ubc29\ubc95: \uc138\ub85c\ub85c 1\uac1c \ud0c0\uc77c \ubc30\uce58<\/li>\n<\/ul>\n<\/li>\n

N = 2:\n

2\uac00\uc9c0 \ubc29\ubc95: \uac00\ub85c\ub85c 2\uac1c \ud0c0\uc77c\uc744 \ubc30\uce58\ud558\uac70\ub098, \uc138\ub85c\ub85c 1\uac1c \ud0c0\uc77c 2\uac1c \ubc30\uce58<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

\n \uc5ec\uae30\uc11c \uc6b0\ub9ac\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ud328\ud134\uc744 \ubc1c\uacac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\n N\uc774 \ucee4\uc9d0\uc5d0 \ub530\ub77c \uac01 \uacbd\uc6b0\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \ub098\ub204\uc5b4 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n <\/p>\n

\n – N\ubc88\uc9f8 \uce78\uc5d0 \ud0c0\uc77c\uc744 \uac00\ub85c\ub85c \ub123\uc73c\uba74, \uc774\uc804 N-1\uac1c\uc758 \uce78\uc774 \ub0a8\uc2b5\ub2c8\ub2e4.
\n – N\ubc88\uc9f8 \uce78\uc5d0 \ud0c0\uc77c\uc744 \uc138\ub85c\ub85c \ub123\uc73c\uba74, \uc774\uc804 N-2\uac1c\uc758 \uce78\uc774 \ub0a8\uc2b5\ub2c8\ub2e4.\n <\/p>\n

\n \ub530\ub77c\uc11c, \uc810\ud654\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \ud45c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:\n <\/p>\n

\n dp[n] = dp[n-1] + dp[n-2]\n <\/pre>\n

\n \uc774 \uc810\ud654\uc2dd\uc744 \uc124\uc815\ud588\uc744 \ub54c, \ucd08\uae30\uac12\uc744 \uc124\uc815\ud574\uc57c \ud569\ub2c8\ub2e4.
\n dp[1] = 1 (1×2 \ud0c0\uc77c\ub85c \uc138\ub85c \ubc30\uce58), dp[2] = 2 (\uac00\ub85c 2\uac1c \ub610\ub294 \uc138\ub85c 1\uac1c + \uc138\ub85c 1\uac1c) \uc785\ub2c8\ub2e4.\n <\/p>\n

\n \uc774\uc81c \uc774 \uc810\ud654\uc2dd\uc744 \ubc14\ud0d5\uc73c\ub85c N\uc744 \uc785\ub825\ubc1b\uc544 \ubc29\ubc95\uc758 \uc218\ub97c \uacc4\uc0b0\ud558\ub294 C++ \ud504\ub85c\uadf8\ub7a8\uc744 \uc791\uc131\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.\n <\/p>\n<\/section>\n

C++ \ucf54\ub4dc \uad6c\ud604<\/h2>\n

\n                \n                #include \n                using namespace std;\n\n                int main() {\n                    int N;\n                    cin >> N;\n\n                    int dp[31] = {0};\n                    dp[1] = 1;\n                    dp[2] = 2;\n\n                    for (int i = 3; i <= N; ++i) {\n                        dp[i] = dp[i - 1] + dp[i - 2];\n                    }\n\n                    cout << dp[N] << endl;\n                    return 0;\n                }\n                <\/iostream><\/code>\n            <\/pre>\n\n                \uc704 \ucf54\ub4dc\ub294 \uc785\ub825\ubc1b\uc740 N\uc5d0 \ub300\ud574 dp \ubc30\uc5f4\uc744 \uc0dd\uc131\ud558\uace0, \ub3d9\uc801 \ud504\ub85c\uadf8\ub798\ubc0d \uae30\ubc95\uc744 \uc0ac\uc6a9\ud558\uc5ec \uac01 \uacbd\uc6b0\uc758 \uc218\ub97c \uacc4\uc0b0\ud569\ub2c8\ub2e4.
\n                \ub9c8\uc9c0\ub9c9\uc5d0 dp[N]\uc744 \ucd9c\ub825\ud558\uc5ec 2xN \ud0c0\uc77c \ucc44\uc6b0\uae30 \ubc29\ubc95\uc758 \uc218\ub97c \uad6c\ud569\ub2c8\ub2e4.\n            <\/p>\n<\/section>\n
\n\uc2dc\uac04 \ubcf5\uc7a1\ub3c4<\/h2>\n\n                \uc774 \uc54c\uace0\ub9ac\uc998\uc758 \uc2dc\uac04 \ubcf5\uc7a1\ub3c4\ub294 O(N)\uc785\ub2c8\ub2e4.
\n                \uc774\ub294 for \ub8e8\ud504\ub97c N\ubc88 \ubc18\ubcf5\ud558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.
\n                \uacf5\uac04 \ubcf5\uc7a1\ub3c4 \ub610\ud55c O(N)\uc73c\ub85c dp \ubc30\uc5f4\uc744 \uc0ac\uc6a9\ud558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.\n            <\/p>\n<\/section>\n
\n\uacb0\ub860<\/h2>\n\n                2*N \ud0c0\uc77c \ucc44\uc6b0\uae30 \ubb38\uc81c\ub294 \ub3d9\uc801 \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \uc804\ud615\uc801\uc778 \uc608\uc785\ub2c8\ub2e4.
\n                \ubb38\uc81c\ub97c \uc791\uac8c \ub098\ub204\uc5b4 \uc7ac\uadc0\uc801\uc73c\ub85c \ud574\uacb0\ud558\ub294 \uc810\ud654\uc2dd\uc744 \ub9cc\ub4e4\uace0, \uc774\ub97c \ud1b5\ud574 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \uac83\uc774 \ud575\uc2ec\uc785\ub2c8\ub2e4.
\n                \ucf54\ub529 \ud14c\uc2a4\ud2b8\uc5d0\uc11c\ub3c4 \uc790\uc8fc \ucd9c\uc81c\ub418\ub294 \ubb38\uc81c\uc774\ub2c8\ub9cc\ud07c, \uc774\ud574\ud558\uace0 \ubc18\ubcf5 \uc5f0\uc2b5\ud558\uc5ec \uc775\ud600\ub450\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4.\n            <\/p>\n<\/section>\n<\/article>\n
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\ubb38\uc81c \uc124\uba85 2*N \ud0c0\uc77c \ucc44\uc6b0\uae30 \ubb38\uc81c\ub294 \uc8fc\uc5b4\uc9c4 2xN \ud06c\uae30\uc758 \uacf5\uac04\uc744 1×2 \ud06c\uae30\uc758 \ud0c0\uc77c\ub85c \ucc44\uc6b0\ub294 \ubc29\ubc95\uc758 \uc218\ub97c \uad6c\ud558\ub294 \ubb38\uc81c\uc785\ub2c8\ub2e4. \ud0c0\uc77c\uc740 \uac00\ub85c\ub85c \ub610\ub294 \uc138\ub85c\ub85c \ubc30\uce58\ud560 \uc218 \uc788\uc73c\uba70, \uc804\uccb4 2xN \uacf5\uac04\uc744 \uc644\uc804\ud788 \ucc44\uc6cc\uc57c \ud569\ub2c8\ub2e4. \uc774 \ubb38\uc81c\uc758 \ud575\uc2ec\uc740 \uc870\ud569\uc758 \uc218\ub97c \uacc4\uc0b0\ud558\ub294 \uac83\uc774\uba70, \ub3d9\uc801 \ud504\ub85c\uadf8\ub798\ubc0d(Dynamic Programming) \uae30\ubc95\uc744 \ud1b5\ud574 \ud574\uacb0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc785\ub825 \ud615\uc2dd \uc815\uc218 N\uc774 \uc8fc\uc5b4\uc9d1\ub2c8\ub2e4. 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11\uc6d4 26\uc77c \uc11c\ub860 \ucf54\ub529\ud14c\uc2a4\ud2b8\uc5d0\uc11c\ub294 \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ud480\uc774 \ub2a5\ub825\uc744 \ud3c9\uac00\ud558\uae30 \uc704\ud574 \ub2e4\uc591\ud55c \ubb38\uc81c\ub4e4\uc774 \ucd9c\uc81c\ub429\ub2c8\ub2e4. \uadf8 \uc911\uc5d0\uc11c\ub3c4 \"\uc218 \uc815\ub82c\ud558\uae30\" \ubb38\uc81c\ub294 \uae30\ubcf8\uc801\uc774\uba74\uc11c\ub3c4 \uc911\uc694\ud55c \uc54c\uace0\ub9ac\uc998 \uc0ac\uace0\ub825\uc744 \uc694\uad6c\ud558\ub294 \ubb38\uc81c\uac00 \ub429\ub2c8\ub2e4. \uc774 \ubb38\uc81c\ub97c \ud1b5\ud574 \uae30\ubcf8\uc801\uc778 \uc815\ub82c \uc54c\uace0\ub9ac\uc998\uc744 \uc774\ud574\ud558\uace0, \ucf54\ud2c0\ub9b0 \uc5b8\uc5b4\uc758 \ubb38\ubc95\uc5d0 \uc775\uc219\ud574\uc9c0\ub294 \uae30\ud68c\ub97c \uc81c\uacf5\ud558\uace0\uc790 \ud569\ub2c8\ub2e4. \ubb38\uc81c \uc124\uba85 \uc8fc\uc5b4\uc9c4 \uc815\uc218 N\uac1c\ub97c \uc624\ub984\ucc28\uc21c\uc73c\ub85c \uc815\ub82c\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc744\u2026","rel":"","context":""\ucf54\ud2c0\ub9b0 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c"\uc5d0\uc11c","block_context":{"text":"\ucf54\ud2c0\ub9b0 \ucf54\ub529\ud14c\uc2a4\ud2b8 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