{"id":310,"date":"2024-11-26T16:59:10","date_gmt":"2024-11-26T07:59:10","guid":{"rendered":"https:\/\/redutan.synology.me\/wordpress\/?p=310"},"modified":"2024-11-26T16:59:15","modified_gmt":"2024-11-26T07:59:15","slug":"java-backend-%ec%bd%94%eb%94%a9-%ec%9d%b8%ed%84%b0%eb%b7%b0-%ec%a4%80%eb%b9%84","status":"publish","type":"post","link":"https:\/\/redutan.synology.me\/wordpress\/2024\/11\/26\/java-backend-%ec%bd%94%eb%94%a9-%ec%9d%b8%ed%84%b0%eb%b7%b0-%ec%a4%80%eb%b9%84\/","title":{"rendered":"Java backend \ucf54\ub529 \uc778\ud130\ubdf0 \uc900\ube44"},"content":{"rendered":"\n<h2>\uc77c\ubc18\uc801\uc778 \uac1c\ubc1c\uc790 \uba74\uc811 \uc808\ucc28<\/h2>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\uc808\ucc28<\/th><th>\uc124\uba85<\/th><th>\ube44\uace0<\/th><\/tr><\/thead><tbody><tr><td>1. \uc804\ud654 \uc778\ud130\ubdf0<\/td><td>\uc11c\ub958 \ud1b5\uacfc \uc774\ud6c4 \uae30\uc220\uc801\uc778 \ub0b4\uc6a9\uc744 \ubb3c\uc5b4\ubcf4\ub294 \uc778\ud130\ubdf0<\/td><td>\uc0dd\ub7b5 \uac00\ub2a5<\/td><\/tr><tr><td>2. \uc0ac\uc804 \uacfc\uc81c<\/td><td>\uc9c1\ubb34 \uba74\uc811 \uc804 \ud2b9\uc815 \ubb38\uc81c\ub97c \ud574\uacb0\ud560 \uc218 \uc788\ub294\uc9c0 \ud655\uc778\ud558\uae30 \uc704\ud55c \uacfc\uc81c\ub97c \ub0b4\uc90d\ub2c8\ub2e4.<br>\ubb38\uc81c\ub97c \ud574\uacb0\ud588\ub294\uac00? \ucd94\uac00 \uc694\uad6c\uc0ac\ud56d(\uc88b\uc740 \uc124\uacc4 \ub4f1)\uc744 \ub9cc\uc871 \ud588\ub294\uac00? \ub4f1\uc73c\ub85c \ubc30\uc810<\/td><td>\uc0dd\ub7b5 \uac00\ub2a5<\/td><\/tr><tr><td>3. \uc9c1\ubb34 \uba74\uc811<\/td><td>\uc2e4\uc81c \uac1c\ubc1c\uc790\uc640 \ub9cc\ub098\uc11c \uc9c4\ud589\ud558\ub294 \ub300\uba74 \uba74\uc811. \uac00\uc7a5 \ub9ce\uc740 \uc900\ube44\uac00 \ud544\uc694\ud568.<br>\uc54c\uace0\ub9ac\uc998, \uc790\ub8cc\uad6c\uc870, \ucee4\ub9ac\uc5b4 \uc804\ubc18\uc801\uc73c\ub85c \uae30\uc220\uc801\uc778 \ub0b4\uc6a9\uc744 \ud655\uc778\ud568.<br>\ud654\uc774\ud2b8\ubcf4\ub4dc \uc758\uc0ac \ucf54\ub529, \ub77c\uc774\ube0c \ucf54\ub529\uc744 \ud560 \uc218\ub3c4 \uc788\uc74c. <br>\uc5f0\ucc28\uac00 \ub192\ub2e4\uba74 \uc124\uacc4, \uc544\ud0a4\ud14d\ucc98, \uace0\uac00\uc6a9\uc131, \ud655\uc7a5\uc131\uc5d0 \ub300\ud574\uc11c\ub3c4 \uc900\ube44\ud574\uc57c\ud568.<\/td><td>\ubcf4\ud1b5 1\ud68c.<br>\ud654\uc0c1 \ubbf8\ud305\uc73c\ub85c \ub300\uccb4 \uac00\ub2a5<\/td><\/tr><tr><td>4. \uceec\ucc98\ud54f \uba74\uc811<\/td><td>\ubcf4\ud1b5 \uc784\uc6d0, \ucc44\uc6a9 \ub2f4\ub2f9\uc790\uc640 \uc9c4\ud589\ud558\uba70, \uc778\uc131, \uc131\uaca9\uc744 \ud655\uc778\ud568.<br>\ucd5c\uadfc\uc5d0\ub294 \ud68c\uc0ac \ubb38\ud654\uc5d0 \uc798 \uc801\uc751\ud560 \uc218 \uc788\ub294\uc9c0\uac00 \uc911\uc694\ud568.<br>\uc9c1\ubb34 \uc9c8\ubb38\uc774 \ub098\uc62c \uc218\ub3c4 \uc788\uc74c.<\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\uc6b0\ub9ac\ub294 \uc5ec\uae30\uc5d0\uc11c \uc9c1\ubb34 \uba74\uc811 \uc989, \uc77c\ubc18\uc801\uc73c\ub85c \ucf54\ub529 \uc778\ud130\ubdf0\uc5d0 \ub300\ud574\uc11c \uc900\ube44\ud558\ub294 \ubc29\ubc95\uc744 \uc774\uc57c\uae30\ud574 \ubcfc \uc608\uc815\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2>\uba74\uc811 \ub300\ube44\ud45c<\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><thead><tr><th>\ud754\ud788 \ub098\uc624\ub294 \ubb38\uc81c<\/th><th>Clip Pass \uad6c\ucd95<\/th><th>\bN Collabo! \uc6b4\uc601<\/th><th>Fasticket.com \ub9ac\ub274\uc5bc<\/th><\/tr><\/thead><tbody><tr><td>\uac00\uc7a5 \ub3c4\uc804\uc801\uc774\uc5c8\ub358 \uac83<\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td>\uc2e4\uc218 \ud639\uc740 \uc2e4\ud328\ub2f4<\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td>\uc990\uac70\uc6e0\ub358 \uac83<\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td>\ub9ac\ub354\uc2ed<\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td>\ud300\uc6d0\uacfc\uc758 \uac08\ub4f1<\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td>\ub0a8\ub4e4\uacfc \ub2e4\ub974\uac8c \ud589\ub3d9\ud588\ub358 \uac83<\/td><td><\/td><td><\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3>S.A.R. (Situation, Action, Result)<\/h3>\n\n\n\n<figure class=\"wp-block-table alignwide is-style-regular\"><table><thead><tr><th>\uc774\uc57c\uae30<\/th><th>\ud575\uc2ec<\/th><th>\uc0c1\ud669<\/th><th>\ucde8\ud55c \ud589\ub3d9<\/th><th>\uacb0\uacfc<\/th><th>\ub9d0\ud558\uace0\uc790 \ud558\ub294 \uac83<\/th><\/tr><\/thead><tbody><tr><td>Fasticket.com TPS \uac1c\uc120<\/td><td><\/td><td><\/td><td>1. \uc7a5\uc560 \ubd84\uc11d<br>2. \uc131\ub2a5 \ud14c\uc2a4\ud2b8 \uad6c\ucd95<br>3. \uac1c\uc120 -&gt; \ud14c\uc2a4\ud2b8 \ubc18\ubcf5<\/td><td>TPS 200 -&gt; 6,000<\/td><td>\uc131\ub2a5 \ud5a5\uc0c1<\/td><\/tr><tr><td>N Collabo! DDD \uc801\uc6a9<\/td><td><\/td><td><\/td><td>1. \uae30\ud68d\/\uc124\uacc4<br>2. Given-When-Then<br>3. \ud14c\uc2a4\ud2b8 -&gt; \uad6c\ud604 \ubc18\ubcf5<\/td><td>\ub3c4\uba54\uc778\uacfc \uae30\uc220 \ubd84\ub9ac<\/td><td>\uc88b\uc740 \uc124\uacc4\uc5d0 \ub300\ud55c \uace0\ubbfc<\/td><\/tr><tr><td>Clip Pass \uad6c\ucd95<\/td><td><\/td><td><\/td><td>1. \uad50\uc721<br>2. ADR<br>3. \ubaa9\uc801\uacfc \uc6b0\uc120\uc21c\uc704<\/td><td>Clip Pass \uc624\ud508<\/td><td>\uc18c\ud504\ud2b8 \uc2a4\ud0ac<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h3>\uc5ec\ub7ec\ubd84\uc758 \ub2e8\uc810\uc740?<\/h3>\n\n\n\n<p>\uadf8\ub0e5 &#8220;\uc5f4\uc2ec\ud788 \uc57c\uadfc\ud558\uba74 \uc77c\ud569\ub2c8\ub2e4.&#8221;, &#8220;\uace0\uc9d1\uc774 \uc395\ub2c8\ub2e4.&#8221;\ub294 \u3134\u3134\u3134\u3134<br>\uc2e4\uc874\ud558\uba74\uc11c\ub3c4 \uc778\uc815\ud560 \uc218 \ubc16\uc5d0 \uc5c6\ub294 \ub2e8\uc810\uc744 \uc774\uc57c\uae30\ud558\uace0 \uadf8\uac83\uc744 \uadf9\ubcf5\ud558\uae30 \uc704\ud574 \uc5b4\ub5a4 \ub178\ub825\uc744 \ud588\ub294\uc9c0 \uc774\uc57c\uae30\ud568.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p>&#8220;\uc138\ubd80\uc0ac\ud56d\uc744 \uae5c\ube61\ud560 \ub54c\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub85c \uc778\ud574 \uc5c5\ubb34\ub97c \ube68\ub9ac \uc2dc\uc791\ud560 \uc218 \uc788\uc9c0\ub9cc \ubb38\uc81c\uac00 \ubc1c\uc0dd\ub418\uae30\ub3c4 \ud558\uc8e0. \uadf8\ub798\uc11c \uc720\uc5f0\ud55c \uc124\uacc4\ub97c \uc9c0\ud5a5\ud558\uace0, \ub2e4\uc2dc \ud55c \ubc88 \ud655\uc778\ud558\ub294 \uc2b5\uad00\uc744 \uc9c0\ub2c8\uace0 \uc788\uc2b5\ub2c8\ub2e4.&#8221;<\/p>\n<\/blockquote>\n\n\n\n<h3>\ub098 \uc790\uc2e0\uacfc \ud589\ub3d9(\ubb34\uc5c7\uc744 \uc5b4\ub5bb\uac8c) \uc744 \ubcf4\uc5ec\uc918\ub77c<\/h3>\n\n\n\n<ul>\n<li>\ud300\uc774 \ud55c \uc77c\uc774 \uc544\ub2c8\ub77c \ub0b4\uac00 \ubb34\uc5c7\uc744 \ud588\ub294\uac00?<\/li>\n\n\n\n<li>\uc5b4\ub5bb\uac8c \ud574\uc11c \uacb0\uacfc\ub97c \ub9cc\ub4e4\uc5c8\ub294\uc9c0 \uc124\uba85\ud55c\ub2e4. S.A.R.<\/li>\n\n\n\n<li><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h3>\uc131\uacf5\uc758 \uc0ac\ub840\ub97c \ubcf4\uc5ec\uc918\ub77c<\/h3>\n\n\n\n<ul>\n<li>\uc9c0\uc6d0\uc790\ub294 \uad6c\uccb4\uc801\uc73c\ub85c \uc778\ub9e5\uc744 \ud1b5\ud574\uc11c \ub354 \uc88b\uc740 \ud68c\uc0ac\ub85c \uc2a4\uce74\uc6c3 \ub418\uc5c8\ub2e4\ub294 \uc0ac\uc2e4\uc744 \uc5b8\uae09\ud574\uc11c A\uc0ac\uc5d0\uc11c\ub3c4 \uaf64 \uc77c\uc744 \uc798\ud588\ub2e4\ub294 \uc0ac\uc2e4\uc774 \ubcf4\uc784<\/li>\n\n\n\n<li>A\uc0ac \uc6f9\uc11c\ube44\uc2a4\uc758 \ud575\uc2ec \ub3c4\uba54\uc778\uc744 \ucd9c\uc2dc\ud588\ub2e4, \ud655\uc7a5\uc131 \uc788\ub294 \uc2dc\uc2a4\ud15c\uc744 \uc124\uacc4\ud588\ub2e4\ub4e0\uc9c0 \uc0ac\ub840\ub97c \ud1b5\ud574\uc11c \uc9c0\uc6d0\uc790\uc758 \ub2a5\ub825\uc744 \uc5b4\ud544<\/li>\n\n\n\n<li>\ucde8\ubbf8\ub97c \ud1b5\ud574\uc11c \uc0c8\ub85c\uc6b4 \uac83\uc5d0 \ub3c4\uc804\ud558\uace0 \ubc30\uc6b0\ub294 \uac83\uc744 \uc88b\uc544\ud55c\ub2e4\ub294 \uc0ac\uc2e4\uc744 \ubcf4\uc5ec\uc90c<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h1>\uc54c\uace0\ub9ac\ub4ec\/\uc790\ub8cc\uad6c\uc870<\/h1>\n\n\n\n<p><\/p>\n\n\n\n<h2>Big-O<\/h2>\n\n\n\n<p>\uc2dc\uac04&amp;\uacf5\uac04 \ubcf5\uc7a1\ub3c4 \ud45c\ud604 \uc2dc \uc0ac\uc6a9\ud558\ub294 \uc9c0\ud45c. \uac12\uc774 \ub0ae\uc744\uc218\ub85d \uc2dc\uac04 \ud6a8\uc728\uc131\uc774 \uc88b\ub2e4 = \ub354 \uc88b\uc740 \uc54c\uace0\ub9ac\ub4ec.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<ul>\n<li>Map\uc5d0\uc11c Key\ub85c Value\ub97c \uc870\ud68c: O(1)\n<ul>\n<li>\uc5ec\uae30\uc5d0\uc120 1\uc740 \uc22b\uc790 1\uc774 \uc544\ub2c8\ub77c \uc0c1\uc218\ub97c \ub73b\ud568.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\ubc30\uc5f4\uc758 \uc804\uccb4 \uc694\uc18c\ub4e4\uc744 \uc21c\ud68c: O(N)<\/li>\n\n\n\n<li>\ubc30\uc5f4\uc744 2\uc911 \ub8e8\ud504\ub85c \uc120\ud68c(ex: \ubc84\ube14 \uc815\ub82c): O(N<sup><em>2<\/em><\/sup>)<\/li>\n\n\n\n<li>A, B 2\uac1c\uc758 \ubc30\uc5f4\uc744 2\uc911 \ub8e8\ud504\ub85c \uc120\ud68c: O(AB)<\/li>\n\n\n\n<li>\ub2e8\uacc4\ub97c \uac70\uce60 \ub54c \ub9c8\ub2e4 \uc6d0\uc18c\uc758 \uac1c\uc218\uac00 \uc808\ubc18\uc529 \uc904\uc5b4\ub4e0\ub2e4\uba74: O(logN)<\/li>\n\n\n\n<li>\uc7ac\uadc0\ud568\uc218: O(\ubd84\uae30<sup>\uae38\uc774<\/sup>)\n<ul>\n<li>O(2<sup>N<\/sup>), O(N<sup><em>2<\/em><\/sup>) \ucc28\uc774\ub97c \uae30\uc5b5\ud558\uc790.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3>\ucd94\uac00\uc801\uc778 \uaddc\uce59<\/h3>\n\n\n\n<ul>\n<li>\uc0c1\uc218\ub294 \ubb34\uc2dc\ub41c\ub2e4.\n<ul>\n<li>O(2N) -&gt; O(N)<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\uac00\uc7a5 \ud070 \uc601\ud5a5\ub3c4\ub97c \ubc14\ud0d5(\uc9c0\ubc30\uc801\uc778 \ud56d)\uc73c\ub85c \ub2e8\uc21c\ud654\ub41c\ub2e4.\n<ul>\n<li>O(N * N<sup><em>2<\/em><\/sup>) -&gt; O(N<sup><em>2<\/em><\/sup>)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2>\ubb38\uc81c \ud480\uc774<\/h2>\n\n\n\n<ul>\n<li>\uc6b0\uc120 Brute Force\ub85c \ud480\uc5b4\ubcf8\ub2e4.<\/li>\n\n\n\n<li>BUD\ub97c \ucc3e\uc544\uc11c \uc81c\uac70\ud55c\ub2e4.\n<ul>\n<li>B: Bottlenecks<\/li>\n\n\n\n<li>U: Unnecessary Work<\/li>\n\n\n\n<li>D: Duplicated Work<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\uc801\uc808\ud55c \uc790\ub8cc\uad6c\uc870 \uc120\ud0dd\ud55c\ub2e4.\n<ul>\n<li>\uc911\uac04\uac12\uc744 \ucc3e\uc73c\ub77c\ub294 \ubb38\uc81c\uac00 \uc788\ub2e4\uba74 2\uac1c\uc758 Heap(\uc644\uc804 \uc774\uc9c4 \ud2b8\ub9ac) \uc790\ub8cc\uad6c\uc870\ub97c \uc0ac\uc6a9\ud55c\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\uc218\ud589\uc2dc\uac04\uc774 \ucd5c\uc18c\uc778 \uacbd\uc6b0\ub97c \ucc3e\ub294\ub2e4.\n<ul>\n<li>\uc694\uc998\uc5d0\ub294 \uba54\ubaa8\ub9ac \ubcf5\uc7a1\ub3c4\uc758 \uc911\uc694\ub3c4\uac00 \ub0ae\uc544\uc84c\ub2e4. \uc2dc\uac04 \ubcf5\uc7a1\ub3c4\ub97c \ucd5c\uc18c\ud654\ud55c \ud6c4 \uacf5\uac04 \ubcf5\uc7a1\ub3c4\ub97c \uc904\uc77c \uc218 \uc788\ub294 \ubc29\ubc95\uc744 \ucc3e\uc544\ubcf8\ub2e4.<\/li>\n\n\n\n<li>\uc5b4\ub5a4 \uacbd\uc6b0\uc5d0\ub294 \uacf5\uac04\uc5d0 \uc81c\uc57d\uc744 \ub450\ub294 \uacbd\uc6b0\uac00 \uc788\uc5b4\uc11c \uadf8\ub7f0 \uacbd\uc6b0\ub3c4 \uc8fc\uc758\ud55c\ub2e4. \uc0bd\uc785 \uc815\ub82c\uc774 \uc88b\uc740 \uc608\uc2dc<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\uc2a4\uc2a4\ub85c \ud480\uc5b4\ubcf8\ub2e4: \uba38\ub9ac\ub85c\ub9cc \uc0dd\uac01\ud558\uc9c0 \ub9d0\uace0 \uc9c1\uc811 \ud480\uc5b4\ubcf4\uba74 \ub2f5\uc774 \uc758\uc678\ub85c \uc27d\uac8c \ubcf4\uc778\ub2e4.<\/li>\n\n\n\n<li>\ub2e8\uc21c\ud654 \ud55c\ub2e4.<\/li>\n\n\n\n<li>\ucd08\uae30 \uc0ac\ub840\uc5d0\uc11c \ud655\uc7a5\ud55c\ub2e4: \uac00\uc7a5 \uc26c\uc6b4 \uacbd\uc6b0\uc758 \uc218 \ubd80\ud130 \ud655\uc7a5\ud558\ub2e4 \ubcf4\uba74 \uaddc\uce59\uc131\uc774 \ubcf4\uc5ec\uc11c \ud480 \uc218 \uc788\ub2e4.<\/li>\n\n\n\n<li>\uc790\ub8cc \uad6c\uc870: \uc801\uc808\ud55c \uc790\ub8cc\uad6c\uc870\ub294 \ubb38\uc81c\ub97c \uc27d\uac8c \ud574\uacb0\ud560 \uc218 \uc788\uac8c \ub3c4\uc640\uc900\ub2e4.<\/li>\n\n\n\n<li>\ucf54\ub4dc\uc758 \uc7ac\uc0ac\uc6a9: \ud568\uc218 \ucd94\ucd9c, \ud15c\ud50c\ub9bf(\uace0\ucc28\ud568\uc218), \uc81c\ub124\ub9ad\uc2a4<\/li>\n\n\n\n<li>\ud14c\uc2a4\ud2b8\ub97c \ub9cc\ub4e0\ub2e4.<\/li>\n\n\n\n<li>\uc720\uc5f0\ud558\uace0 \ud2bc\ud2bc\ud55c \ucf54\ub4dc: \ubb38\uc81c \ud480 \ub54c \uc774\ub7f0 \uac83 \uae4c\uc9c0 \ud574\uc8fc\uba74 \ucd94\uac00 \uc810\uc218<\/li>\n\n\n\n<li>\uc624\ub958 \uac80\uc0ac: \ubb38\uc81c \ud480 \ub54c \uc774\ub7f0 \uac83 \uae4c\uc9c0 \ud574\uc8fc\uba74 \ucd94\uac00 \uc810\uc218(2)<\/li>\n\n\n\n<li>\ud3ec\uae30\ud558\uc9c0 \ub9d0\uc790\n<ul>\n<li>\uc5b4\uc9dc\ud53c \uba74\uc811\uad00\uc740 \uc5ec\ub7ec\ubd84\uc774 \ubb38\uc81c \ud478\ub294 \uacfc\uc815\uc744 \ud655\uc778\ud558\ub294 \uac83\uc774\uc9c0, \ubb38\uc81c\ub97c \ub2e4 \ud574\uacb0\ud558\uae30\ub97c \uae30\ub300\ud558\uc9c0 \uc54a\ub294\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc77c\ubc18\uc801\uc778 \uac1c\ubc1c\uc790 \uba74\uc811 \uc808\ucc28 \uc808\ucc28 \uc124\uba85 \ube44\uace0 1. \uc804\ud654 \uc778\ud130\ubdf0 \uc11c\ub958 \ud1b5\uacfc \uc774\ud6c4 \uae30\uc220\uc801\uc778 \ub0b4\uc6a9\uc744 \ubb3c\uc5b4\ubcf4\ub294 \uc778\ud130\ubdf0 \uc0dd\ub7b5 \uac00\ub2a5 2. \uc0ac\uc804 \uacfc\uc81c \uc9c1\ubb34 \uba74\uc811 \uc804 \ud2b9\uc815 \ubb38\uc81c\ub97c \ud574\uacb0\ud560 \uc218 \uc788\ub294\uc9c0 \ud655\uc778\ud558\uae30 \uc704\ud55c \uacfc\uc81c\ub97c \ub0b4\uc90d\ub2c8\ub2e4.\ubb38\uc81c\ub97c \ud574\uacb0\ud588\ub294\uac00? \ucd94\uac00 \uc694\uad6c\uc0ac\ud56d(\uc88b\uc740 \uc124\uacc4 \ub4f1)\uc744 \ub9cc\uc871 \ud588\ub294\uac00? \ub4f1\uc73c\ub85c \ubc30\uc810 \uc0dd\ub7b5 \uac00\ub2a5 3. \uc9c1\ubb34 \uba74\uc811 \uc2e4\uc81c \uac1c\ubc1c\uc790\uc640 \ub9cc\ub098\uc11c \uc9c4\ud589\ud558\ub294 \ub300\uba74 \uba74\uc811. \uac00\uc7a5 &#8230; 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