문제
구름의 신규 서비스 Arkain (https://arkain.io/ )은 웹 IDE 서비스로, 개발자들이 더 효율적으로 작업할 수 있도록 각종 AI 기능을 제공한다. Arkain에 탑재된 AI 어시스턴트인 Arkain AI는 실시간 코드 제안, 자동 완성, 디버깅 지원 등의 기능을 제공한다. Arkain Snap은 자연어 기반으로 개발 환경을 자동 설정해주는 기능으로, 복잡한 환경 구성 과정을 단축시켜준다. 각각의 개발 환경은 별도의 컨테이너로 관리되며, 다른 사용자와 공유하거나 템플릿으로 재사용이 가능하다.
윤이는 Arkain의 대시보드 UI를 개발하고 있다. 대시보드에는 사용자의 컨테이너 목록이 보이며, 최근 사용 순으로 정렬되어 있다. 즉, 가장 최근에 사용한 컨테이너가 다른 컨테이너보다 위에 보인다.
윤이는 중요한 컨테이너를 고정하는 기능도 추가하려고 한다. 고정된 컨테이너는 최근에 사용하지 않았어도 다른 컨테이너보다 항상 위에 보인다. 고정된 컨테이너가 여러 개라면, 그중에서 더 최근에 사용한 컨테이너가 더 위에 보인다.
사용자가 컨테이너를 사용한 로그와 고정된 컨테이너 목록이 주어질 때, 윤이를 도와서 컨테이너를 순서대로 보여주는 기능을 구현해 보자!
출력
한 줄에 하나씩 컨테이너 이름을 출력한다. 출력 순서는 대시보드에서 컨테이너를 보여주는 순서와 같아야 한다.
예제 출력 1
복사
auth
dashboard
chat
billing
예제 출력 2
복사
logger
email
search
db
노트
C++에서 cout << endl 로 줄바꿈을 출력하는 것이 느릴 수 있으므로, cout << "\n" 을 권장한다.
[{"problem_id":"33691","problem_lang":"0","title":"Arkain \ub300\uc2dc\ubcf4\ub4dc","description":"<p>\uad6c\ub984\uc758 \uc2e0\uaddc \uc11c\ube44\uc2a4 Arkain (<a href=\"https:\/\/arkain.io\/\">https:\/\/arkain.io\/<\/a>)\uc740 \uc6f9 IDE \uc11c\ube44\uc2a4\ub85c, \uac1c\ubc1c\uc790\ub4e4\uc774 \ub354 \ud6a8\uc728\uc801\uc73c\ub85c \uc791\uc5c5\ud560 \uc218 \uc788\ub3c4\ub85d \uac01\uc885 AI \uae30\ub2a5\uc744 \uc81c\uacf5\ud55c\ub2e4. Arkain\uc5d0 \ud0d1\uc7ac\ub41c AI \uc5b4\uc2dc\uc2a4\ud134\ud2b8\uc778 Arkain AI\ub294 \uc2e4\uc2dc\uac04 \ucf54\ub4dc \uc81c\uc548, \uc790\ub3d9 \uc644\uc131, \ub514\ubc84\uae45 \uc9c0\uc6d0 \ub4f1\uc758 \uae30\ub2a5\uc744 \uc81c\uacf5\ud55c\ub2e4. Arkain Snap\uc740 \uc790\uc5f0\uc5b4 \uae30\ubc18\uc73c\ub85c \uac1c\ubc1c \ud658\uacbd\uc744 \uc790\ub3d9 \uc124\uc815\ud574\uc8fc\ub294 \uae30\ub2a5\uc73c\ub85c, \ubcf5\uc7a1\ud55c \ud658\uacbd \uad6c\uc131 \uacfc\uc815\uc744 \ub2e8\ucd95\uc2dc\ucf1c\uc900\ub2e4. \uac01\uac01\uc758 \uac1c\ubc1c \ud658\uacbd\uc740 \ubcc4\ub3c4\uc758 \ucee8\ud14c\uc774\ub108\ub85c \uad00\ub9ac\ub418\uba70, \ub2e4\ub978 \uc0ac\uc6a9\uc790\uc640 \uacf5\uc720\ud558\uac70\ub098 \ud15c\ud50c\ub9bf\uc73c\ub85c \uc7ac\uc0ac\uc6a9\uc774 \uac00\ub2a5\ud558\ub2e4.<\/p>\r\n\r\n<p>\uc724\uc774\ub294 Arkain\uc758 \ub300\uc2dc\ubcf4\ub4dc UI\ub97c \uac1c\ubc1c\ud558\uace0 \uc788\ub2e4. \ub300\uc2dc\ubcf4\ub4dc\uc5d0\ub294 \uc0ac\uc6a9\uc790\uc758 \ucee8\ud14c\uc774\ub108 \ubaa9\ub85d\uc774 \ubcf4\uc774\uba70, \ucd5c\uadfc \uc0ac\uc6a9 \uc21c\uc73c\ub85c \uc815\ub82c\ub418\uc5b4 \uc788\ub2e4. \uc989, \uac00\uc7a5 \ucd5c\uadfc\uc5d0 \uc0ac\uc6a9\ud55c \ucee8\ud14c\uc774\ub108\uac00 \ub2e4\ub978 \ucee8\ud14c\uc774\ub108\ubcf4\ub2e4 \uc704\uc5d0 \ubcf4\uc778\ub2e4.<\/p>\r\n\r\n<p>\uc724\uc774\ub294 \uc911\uc694\ud55c \ucee8\ud14c\uc774\ub108\ub97c \uace0\uc815\ud558\ub294 \uae30\ub2a5\ub3c4 \ucd94\uac00\ud558\ub824\uace0 \ud55c\ub2e4. \uace0\uc815\ub41c \ucee8\ud14c\uc774\ub108\ub294 \ucd5c\uadfc\uc5d0 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc558\uc5b4\ub3c4 \ub2e4\ub978 \ucee8\ud14c\uc774\ub108\ubcf4\ub2e4 \ud56d\uc0c1 \uc704\uc5d0 \ubcf4\uc778\ub2e4. \uace0\uc815\ub41c \ucee8\ud14c\uc774\ub108\uac00 \uc5ec\ub7ec \uac1c\ub77c\uba74, \uadf8\uc911\uc5d0\uc11c \ub354 \ucd5c\uadfc\uc5d0 \uc0ac\uc6a9\ud55c \ucee8\ud14c\uc774\ub108\uac00 \ub354 \uc704\uc5d0 \ubcf4\uc778\ub2e4.<\/p>\r\n\r\n<p>\uc0ac\uc6a9\uc790\uac00 \ucee8\ud14c\uc774\ub108\ub97c \uc0ac\uc6a9\ud55c \ub85c\uadf8\uc640 \uace0\uc815\ub41c \ucee8\ud14c\uc774\ub108 \ubaa9\ub85d\uc774 \uc8fc\uc5b4\uc9c8 \ub54c, \uc724\uc774\ub97c \ub3c4\uc640\uc11c \ucee8\ud14c\uc774\ub108\ub97c \uc21c\uc11c\ub300\ub85c \ubcf4\uc5ec\uc8fc\ub294 \uae30\ub2a5\uc744 \uad6c\ud604\ud574 \ubcf4\uc790!<\/p>\r\n","input":"<p>\uccab\uc9f8 \uc904\uc5d0 \ucee8\ud14c\uc774\ub108 \uc0ac\uc6a9 \ub85c\uadf8\uc758 \uac1c\uc218 $N$\uc774 \uc8fc\uc5b4\uc9c4\ub2e4. $(1 \\le N \\le 100\\,000)$<\/p>\r\n\r\n<p>\ub2e4\uc74c $N$\uac1c\uc758 \uc904\uc5d0 \ub85c\uadf8\uc5d0 \uc801\ud78c \ucee8\ud14c\uc774\ub108 \uc774\ub984\uc774 \uc8fc\uc5b4\uc9c4\ub2e4. \ub85c\uadf8\uc758 \uc0ac\uc6a9 \uc2dc\uac01\uc774 \uc99d\uac00\ud558\ub294 \uc21c\uc11c\ub85c \uc8fc\uc5b4\uc9c0\uba70, \uac19\uc740 \ucee8\ud14c\uc774\ub108\ub97c \uc0ac\uc6a9\ud55c \ub85c\uadf8\uac00 \uc5ec\ub7ec \uac1c \uc874\uc7ac\ud560 \uc218 \uc788\ub2e4. \ucee8\ud14c\uc774\ub108 \uc774\ub984\uc740 \uc54c\ud30c\ubcb3 \uc18c\ubb38\uc790\ub85c \uc774\ub8e8\uc5b4\uc9c4 \uae38\uc774 $1$ \uc774\uc0c1 $10$ \uc774\ud558\uc758 \ubb38\uc790\uc5f4\uc774\ub2e4.<\/p>\r\n\r\n<p>\ub2e4\uc74c \uc904\uc5d0 \uace0\uc815\ub41c \ucee8\ud14c\uc774\ub108\uc758 \uac1c\uc218 $K$\uac00 \uc8fc\uc5b4\uc9c4\ub2e4. $(0 \\le K \\le N)$<\/p>\r\n\r\n<p>\ub2e4\uc74c $K$\uac1c\uc758 \uc904\uc5d0 \uace0\uc815\ub41c \ucee8\ud14c\uc774\ub108 \uc774\ub984\uc774 \uc8fc\uc5b4\uc9c4\ub2e4. \uc8fc\uc5b4\uc9c0\ub294 \uace0\uc815\ub41c \ucee8\ud14c\uc774\ub108 \uc774\ub984\uc740 \uc11c\ub85c \ub2e4\ub974\uba70, \uac01 \ucee8\ud14c\uc774\ub108\uc5d0\ub294 \uc801\uc5b4\ub3c4 \ud558\ub098\uc758 \uc0ac\uc6a9 \ub85c\uadf8\uac00 \uc874\uc7ac\ud568\uc774 \ubcf4\uc7a5\ub41c\ub2e4.<\/p>\r\n","output":"<p>\ud55c \uc904\uc5d0 \ud558\ub098\uc529 \ucee8\ud14c\uc774\ub108 \uc774\ub984\uc744 \ucd9c\ub825\ud55c\ub2e4. \ucd9c\ub825 \uc21c\uc11c\ub294 \ub300\uc2dc\ubcf4\ub4dc\uc5d0\uc11c \ucee8\ud14c\uc774\ub108\ub97c \ubcf4\uc5ec\uc8fc\ub294 \uc21c\uc11c\uc640 \uac19\uc544\uc57c \ud55c\ub2e4.<\/p>\r\n","hint":"<p>C++\uc5d0\uc11c <code>cout &lt;&lt; endl<\/code> \ub85c \uc904\ubc14\uafc8\uc744 \ucd9c\ub825\ud558\ub294 \uac83\uc774 \ub290\ub9b4 \uc218 \uc788\uc73c\ubbc0\ub85c, <code>cout &lt;&lt; &quot;\\n&quot;<\/code> \uc744 \uad8c\uc7a5\ud55c\ub2e4.<\/p>\r\n","original":"1","html_title":"0","problem_lang_tcode":"Korean"},{"problem_id":"33691","problem_lang":"1","title":"Arkain Dashboard","description":"<p>Arkain (<a href=\"https:\/\/arkain.io\/\">https:\/\/arkain.io\/<\/a>), a new service by goorm, is a web-based IDE that provides various AI features to enhance software development process. Its built-in assistant, Arkain AI, offers real-time code suggestions, autocompletion, and debugging support. Arkain Snap allows users to set up development environments automatically using natural language, significantly reducing the complexity of configuration. Each development environment is managed in its own container, which can be shared with others or reused as a template.<\/p>\r\n\r\n<p>Yunee is developing the dashboard UI for Arkain. The dashboard displays a list of the user&#39;s containers, sorted by recent usage. The most recently used container appears at the top.<\/p>\r\n\r\n<p>Yunee also plans to add a feature to pin important containers. Pinned containers should always appear above others, even if they haven&#39;t been used recently. Among pinned containers, the more recently used ones should come first.<\/p>\r\n\r\n<p>Given container usage logs and a list of pinned containers, let&#39;s help Yunee implement the feature to display the containers in the correct order!<\/p>\r\n","input":"<p>The first line contains an integer $N$, the number of container usage logs. $(1 \\le N \\le 100\\,000)$<\/p>\r\n\r\n<p>Each of the next $N$ lines contains the name of a container recorded in the logs. The logs are given in increasing order of usage time, and the same container may appear multiple times. Each container name is a nonempty string of lowercase alphabets up to $10$ characters long.<\/p>\r\n\r\n<p>The next line contains an integer $K$, the number of pinned containers. $(0 \\le K \\le N)$<\/p>\r\n\r\n<p>Each of the next $K$ lines contains the name of a pinned container. All pinned container names are distinct, and each is guaranteed to appear at least once in the usage logs.<\/p>\r\n","output":"<p>Print the container names, one per line. The output order must match the order in which containers are displayed on the dashboard.<\/p>\r\n","hint":"<p>In C++, using <code>cout &lt;&lt; endl<\/code> to output newlines can be slow, so <code>cout &lt;&lt; &quot;\\n&quot;<\/code>&nbsp;is recommended.<\/p>\r\n","original":"0","html_title":"0","problem_lang_tcode":"English"}]