{"componentChunkName":"component---src-templates-blog-post-js","path":"/Problem-Solving/2019-12-23-5397번-키로거/","result":{"data":{"site":{"siteMetadata":{"title":"Hun's Footsteps 🥷","author":"전여훈","siteUrl":"https://jeonyeohun.netlify.app","comment":{"disqusShortName":"","utterances":"jeonyeohun/jeonyeohun.github.io"},"sponsor":{"buyMeACoffeeId":"jeonyeohun"}}},"markdownRemark":{"id":"81d91581-6b97-5419-8faa-a0492f3ca9f5","excerpt":"5397번: 키로거 접근 방법: 링크드 리스트로 커서를 구현해서 주어진 조건에 따라 문자를 삽입한다. list 라이브러리를 사용해서 해결했는데, erase 할 때 커서 위치를 수정하는것, 그리고 ’>’ 기능과 ’<’, ’-’ 기능이 리스트의 양끝에서 적용되는 것에 대한 예외처리 때문에 조금 애를 먹긴했다. 통과 코드:","html":"<h3 id=\"5397번-키로거\" style=\"position:relative;\"><a href=\"#5397%EB%B2%88-%ED%82%A4%EB%A1%9C%EA%B1%B0\" aria-label=\"5397번 키로거 permalink\" class=\"anchor before\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"16\" version=\"1.1\" viewBox=\"0 0 16 16\" width=\"16\"><path fill-rule=\"evenodd\" d=\"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"></path></svg></a><a href=\"https://www.acmicpc.net/problem/5397\">5397번: 키로거</a></h3>\n<div class=\"gatsby-highlight\" data-language=\"text\"><pre class=\"language-text\"><code class=\"language-text\">창영이는 강산이의 비밀번호를 훔치기 위해서 강산이가 사용하는 컴퓨터에 키로거를 설치했다.\n며칠을 기다린 끝에 창영이는 강산이가 비밀번호 창에 입력하는 글자를 얻어냈다. 키로거는 사용자가 키보드를 누른 명령을 모두 기록한다.\n따라서, 강산이가 비밀번호를 입력할 때, 화살표나 백스페이스를 입력해도 정확한 비밀번호를 알아낼 수 있다. 강산이가 비밀번호 창에서 입력한 키가 주어졌을 때, 강산이의 비밀번호를 알아내는 프로그램을 작성하시오.\n\n첫째 줄에 테스트 케이스의 개수가 주어진다. 각 테스트 케이스는 한줄로 이루어져 있고, 강산이가 입력한 순서대로 길이가 L인 문자열이 주어진다. (1 ≤ L의 길이 ≤ 1,000,000)\n강산이가 백스페이스를 입력했다면, &#39;-&#39;가 주어진다. 이때 커서의 바로 앞에 글자가 존재한다면, 그 글자를 지운다.\n화살표의 입력은 &#39;&lt;&#39;와 &#39;&gt;&#39;로 주어진다. 이때는 커서의 위치를 움직일 수 있다면, 왼쪽 또는 오른쪽으로 1만큼 움직인다.\n나머지 문자는 비밀번호의 일부이다. 물론, 나중에 백스페이스를 통해서 지울 수는 있다. 만약 커서의 위치가 줄의 마지막이 아니라면, 그 문자를 입력하고, 커서는 오른쪽으로 한 칸 이동한다.</code></pre></div>\n<h3 id=\"접근-방법\" style=\"position:relative;\"><a href=\"#%EC%A0%91%EA%B7%BC-%EB%B0%A9%EB%B2%95\" aria-label=\"접근 방법 permalink\" class=\"anchor before\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"16\" version=\"1.1\" viewBox=\"0 0 16 16\" width=\"16\"><path fill-rule=\"evenodd\" d=\"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"></path></svg></a>접근 방법:</h3>\n<p>링크드 리스트로 커서를 구현해서 주어진 조건에 따라 문자를 삽입한다. list 라이브러리를 사용해서 해결했는데, erase 할 때 커서 위치를 수정하는것, 그리고 ’>’ 기능과 ’&#x3C;’, ’-’ 기능이 리스트의 양끝에서 적용되는 것에 대한 예외처리 때문에 조금 애를 먹긴했다.</p>\n<h3 id=\"통과-코드\" style=\"position:relative;\"><a href=\"#%ED%86%B5%EA%B3%BC-%EC%BD%94%EB%93%9C\" aria-label=\"통과 코드 permalink\" class=\"anchor before\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"16\" version=\"1.1\" viewBox=\"0 0 16 16\" width=\"16\"><path fill-rule=\"evenodd\" d=\"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"></path></svg></a>통과 코드:</h3>\n<div class=\"gatsby-highlight\" data-language=\"cpp\"><pre class=\"language-cpp\"><code class=\"language-cpp\"><span class=\"token macro property\"><span class=\"token directive-hash\">#</span><span class=\"token directive keyword\">include</span> <span class=\"token string\">&lt;iostream></span></span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#</span><span class=\"token directive keyword\">include</span> <span class=\"token string\">&lt;vector></span></span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#</span><span class=\"token directive keyword\">include</span> <span class=\"token string\">&lt;string></span></span>\n\n<span class=\"token keyword\">using</span> <span class=\"token keyword\">namespace</span> std<span class=\"token punctuation\">;</span>\n\n<span class=\"token keyword\">int</span> arr<span class=\"token punctuation\">[</span><span class=\"token number\">5</span><span class=\"token punctuation\">]</span><span class=\"token punctuation\">;</span>\nvector<span class=\"token operator\">&lt;</span>string<span class=\"token operator\">></span> v<span class=\"token punctuation\">;</span>\n\n<span class=\"token keyword\">int</span> <span class=\"token function\">main</span><span class=\"token punctuation\">(</span><span class=\"token keyword\">void</span><span class=\"token punctuation\">)</span><span class=\"token punctuation\">{</span>\n    ios_base<span class=\"token operator\">::</span><span class=\"token function\">sync_with_stdio</span><span class=\"token punctuation\">(</span><span class=\"token number\">0</span><span class=\"token punctuation\">)</span><span class=\"token punctuation\">;</span>\n    cin<span class=\"token punctuation\">.</span><span class=\"token function\">tie</span><span class=\"token punctuation\">(</span><span class=\"token number\">0</span><span class=\"token punctuation\">)</span><span class=\"token punctuation\">;</span>\n    <span class=\"token keyword\">int</span> M<span class=\"token punctuation\">,</span> N<span class=\"token punctuation\">;</span>\n    cin <span class=\"token operator\">>></span> M <span class=\"token operator\">>></span> N<span class=\"token punctuation\">;</span>\n\n    v<span class=\"token punctuation\">.</span><span class=\"token function\">resize</span><span class=\"token punctuation\">(</span><span class=\"token number\">5</span> <span class=\"token operator\">*</span> M <span class=\"token operator\">+</span> <span class=\"token number\">1</span><span class=\"token punctuation\">)</span><span class=\"token punctuation\">;</span> <span class=\"token comment\">// 벡터 크기를 입력된 크기로 재조정</span>\n    <span class=\"token keyword\">for</span> <span class=\"token punctuation\">(</span><span class=\"token keyword\">int</span> i <span class=\"token operator\">=</span> <span class=\"token number\">0</span><span class=\"token punctuation\">;</span> i <span class=\"token operator\">&lt;</span> <span class=\"token number\">5</span> <span class=\"token operator\">*</span> M <span class=\"token operator\">+</span> <span class=\"token number\">1</span><span class=\"token punctuation\">;</span> i<span class=\"token operator\">++</span><span class=\"token punctuation\">)</span>\n        cin <span class=\"token operator\">>></span> v<span class=\"token punctuation\">[</span>i<span class=\"token punctuation\">]</span><span class=\"token punctuation\">;</span>\n        <span class=\"token keyword\">for</span> <span class=\"token punctuation\">(</span><span class=\"token keyword\">int</span> i <span class=\"token operator\">=</span> <span class=\"token number\">0</span><span class=\"token punctuation\">;</span> i <span class=\"token operator\">&lt;</span> <span class=\"token number\">5</span> <span class=\"token operator\">*</span> M <span class=\"token operator\">+</span> <span class=\"token number\">1</span><span class=\"token punctuation\">;</span> i<span class=\"token operator\">++</span><span class=\"token punctuation\">)</span><span class=\"token punctuation\">{</span>\n            <span class=\"token keyword\">bool</span> checked <span class=\"token operator\">=</span> <span class=\"token boolean\">false</span><span class=\"token punctuation\">;</span> <span class=\"token comment\">// 창문 윗줄 판정</span>\n            <span class=\"token keyword\">for</span> <span class=\"token punctuation\">(</span><span class=\"token keyword\">int</span> j <span class=\"token operator\">=</span> <span class=\"token number\">0</span><span class=\"token punctuation\">;</span> j <span class=\"token operator\">&lt;</span> v<span class=\"token punctuation\">[</span>i<span class=\"token punctuation\">]</span><span class=\"token punctuation\">.</span><span class=\"token function\">size</span><span class=\"token punctuation\">(</span><span class=\"token punctuation\">)</span><span class=\"token punctuation\">;</span> j<span class=\"token operator\">++</span><span class=\"token punctuation\">)</span><span class=\"token punctuation\">{</span>\n                <span class=\"token keyword\">if</span> <span class=\"token punctuation\">(</span>v<span class=\"token punctuation\">[</span>i<span class=\"token punctuation\">]</span><span class=\"token punctuation\">[</span>j<span class=\"token punctuation\">]</span> <span class=\"token operator\">==</span> <span class=\"token string\">'.'</span><span class=\"token punctuation\">)</span><span class=\"token punctuation\">{</span>\n                    checked <span class=\"token operator\">=</span> <span class=\"token boolean\">true</span><span class=\"token punctuation\">;</span>\n                    arr<span class=\"token punctuation\">[</span><span class=\"token number\">0</span><span class=\"token punctuation\">]</span><span class=\"token operator\">++</span><span class=\"token punctuation\">;</span>\n                    j <span class=\"token operator\">+=</span> <span class=\"token number\">3</span><span class=\"token punctuation\">;</span>\n                <span class=\"token punctuation\">}</span>\n                <span class=\"token keyword\">else</span> <span class=\"token keyword\">if</span> <span class=\"token punctuation\">(</span>v<span class=\"token punctuation\">[</span>i<span class=\"token punctuation\">]</span><span class=\"token punctuation\">[</span>j<span class=\"token punctuation\">]</span> <span class=\"token operator\">==</span> <span class=\"token string\">'*'</span><span class=\"token punctuation\">)</span><span class=\"token punctuation\">{</span>\n                    checked <span class=\"token operator\">=</span> <span class=\"token boolean\">true</span><span class=\"token punctuation\">;</span>\n                    <span class=\"token keyword\">int</span> k <span class=\"token operator\">=</span> <span class=\"token number\">0</span><span class=\"token punctuation\">;</span>\n                    <span class=\"token keyword\">while</span> <span class=\"token punctuation\">(</span><span class=\"token number\">1</span><span class=\"token punctuation\">)</span><span class=\"token punctuation\">{</span>\n                        k<span class=\"token operator\">++</span><span class=\"token punctuation\">;</span>\n                        <span class=\"token keyword\">if</span> <span class=\"token punctuation\">(</span>v<span class=\"token punctuation\">[</span>i <span class=\"token operator\">+</span> k<span class=\"token punctuation\">]</span><span class=\"token punctuation\">[</span>j<span class=\"token punctuation\">]</span> <span class=\"token operator\">!=</span> <span class=\"token string\">'*'</span><span class=\"token punctuation\">)</span> <span class=\"token keyword\">break</span><span class=\"token punctuation\">;</span>\n                    <span class=\"token punctuation\">}</span>\n                    arr<span class=\"token punctuation\">[</span>k<span class=\"token punctuation\">]</span><span class=\"token operator\">++</span><span class=\"token punctuation\">;</span>\n                    j <span class=\"token operator\">+=</span> <span class=\"token number\">3</span><span class=\"token punctuation\">;</span>\n                    <span class=\"token punctuation\">}</span>\n                 <span class=\"token punctuation\">}</span>\n                 <span class=\"token keyword\">if</span> <span class=\"token punctuation\">(</span>checked<span class=\"token punctuation\">)</span> i <span class=\"token operator\">+=</span> <span class=\"token number\">3</span><span class=\"token punctuation\">;</span>\n        <span class=\"token punctuation\">}</span>\n\n        <span class=\"token keyword\">for</span> <span class=\"token punctuation\">(</span><span class=\"token keyword\">int</span> i <span class=\"token operator\">=</span> <span class=\"token number\">0</span><span class=\"token punctuation\">;</span> i <span class=\"token operator\">&lt;</span> <span class=\"token number\">5</span><span class=\"token punctuation\">;</span> i<span class=\"token operator\">++</span><span class=\"token punctuation\">)</span>\n\n                 cout <span class=\"token operator\">&lt;&lt;</span> arr<span class=\"token punctuation\">[</span>i<span class=\"token punctuation\">]</span> <span class=\"token operator\">&lt;&lt;</span> <span class=\"token string\">\" \"</span><span class=\"token punctuation\">;</span>\n\n        cout <span class=\"token operator\">&lt;&lt;</span> <span class=\"token string\">\"\\n\"</span><span class=\"token punctuation\">;</span>\n\n        <span class=\"token keyword\">return</span> <span class=\"token number\">0</span><span class=\"token punctuation\">;</span>\n<span class=\"token punctuation\">}</span></code></pre></div>","frontmatter":{"title":"[백준 알고리즘] 5397번: 키로거","date":"December 23, 2019"}}},"pageContext":{"slug":"/Problem-Solving/2019-12-23-5397번-키로거/","previous":{"fields":{"slug":"/Problem-Solving/2019-12-23-2953번-나는-요리사다/"},"frontmatter":{"title":"[백준 알고리즘] 2953번: 나는 요리사다","category":"Problem-Solving","draft":false}},"next":{"fields":{"slug":"/Problem-Solving/2019-12-23-2799번-블라인드/"},"frontmatter":{"title":"[백준 알고리즘] 2799번: 블라인드","category":"Problem-Solving","draft":false}}}},"staticQueryHashes":["2486386679","3128451518"]}