182 lines
11 KiB
HTML
182 lines
11 KiB
HTML
<!DOCTYPE html>
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<html lang="ko">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>BOJ 32526 - Offline</title>
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<style>
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:root {
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--bg: #fafaf8;
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--paper: #ffffff;
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--ink: #1e1f24;
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--muted: #6a6d75;
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--line: #d8dce3;
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--accent: #0d6e6e;
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--code-bg: #f4f6fb;
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}
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* { box-sizing: border-box; }
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body {
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margin: 0;
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background:
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radial-gradient(circle at 15% 0%, #f0efe9 0%, transparent 42%),
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radial-gradient(circle at 85% 20%, #e7f1f2 0%, transparent 38%),
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var(--bg);
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color: var(--ink);
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font-family: "Noto Sans KR", "Pretendard", "Apple SD Gothic Neo", sans-serif;
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line-height: 1.65;
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}
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main {
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max-width: 980px;
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margin: 0 auto;
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padding: 24px 16px 56px;
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}
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.header {
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background: var(--paper);
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border: 1px solid var(--line);
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border-radius: 14px;
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padding: 18px 20px;
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margin-bottom: 18px;
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}
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.header h1 { margin: 0 0 6px; font-size: 1.5rem; }
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.header p { margin: 0; color: var(--muted); font-size: 0.95rem; }
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.header a { color: var(--accent); text-decoration: none; }
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.section {
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background: var(--paper);
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border: 1px solid var(--line);
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border-radius: 14px;
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padding: 16px 18px;
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margin-bottom: 14px;
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overflow-x: auto;
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}
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h2 {
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margin: 0 0 10px;
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font-size: 1.05rem;
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color: var(--accent);
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border-bottom: 1px solid var(--line);
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padding-bottom: 8px;
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}
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pre, code {
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font-family: "JetBrains Mono", "Fira Code", monospace;
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background: var(--code-bg);
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}
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pre {
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padding: 12px;
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border-radius: 10px;
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border: 1px solid #e7ebf2;
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overflow: auto;
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}
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blockquote {
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margin: 14px 0;
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padding: 16px 16px 14px 22px;
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border-left: 4px solid var(--accent);
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border-radius: 10px;
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background: linear-gradient(90deg, #eef8f8 0%, #f9fdfd 100%);
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color: #24313a;
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font-weight: 600;
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position: relative;
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}
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blockquote::before {
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content: "“";
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position: absolute;
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left: 8px;
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top: 2px;
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font-size: 1.35rem;
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line-height: 1;
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color: #0b5f5f;
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opacity: 0.7;
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}
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blockquote > :first-child { margin-top: 0; }
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blockquote > :last-child { margin-bottom: 0; }
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q {
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color: #114f50;
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font-weight: 700;
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background: #edf8f8;
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border-radius: 6px;
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padding: 0 4px;
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}
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.math-inline math {
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font-size: 1em;
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vertical-align: middle;
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}
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.math-block {
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margin: 10px 0;
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padding: 8px 10px;
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overflow-x: auto;
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background: #f8fbff;
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border: 1px solid #e2ecf8;
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border-radius: 8px;
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}
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.math-block math {
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font-size: 1.04em;
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display: block;
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}
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table { border-collapse: collapse; width: 100%; }
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th, td { border: 1px solid var(--line); padding: 6px 8px; }
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img { max-width: 100%; height: auto; }
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</style>
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</head>
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<body>
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<main>
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<header class="header">
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<h1>문자열 구성하기</h1>
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</header>
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<article class="section">
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<h2>문제</h2>
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<p>어떤 문자열 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>s</mi></mrow></math></span>에 대해 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mi>s</mi><mrow><mi>′</mi></mrow></msup></mrow></math></span>은 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>s</mi></mrow></math></span>를 뒤집은 문자열이다. 두 문자열 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>p</mi></mrow></math></span>와 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>q</mi></mrow></math></span>에 대해 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>p</mi><mo>+</mo><mi>q</mi></mrow></math></span>는 두 문자열을 차례로 이어 붙인 문자열이다.</p>
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<p>길이 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>N</mi></mrow></math></span>의 알파벳 소문자로만 이루어진 문자열 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>S</mi></mrow></math></span>에 대해 길이 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>i</mi></mrow></math></span>의 접두사를 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mi>A</mi><mi>i</mi></msub></mrow></math></span>, 길이 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>i</mi></mrow></math></span>의 접미사를 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mi>B</mi><mi>i</mi></msub></mrow></math></span>라고 하자. <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>f</mi><mo stretchy="false">(</mo><mi>S</mi><mo stretchy="false">)</mo></mrow></math></span>는 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msubsup><mi>A</mi><mi>i</mi><mrow><mi>′</mi></mrow></msubsup><mo>+</mo><msub><mi>B</mi><mrow><mi>N</mi><mo>−</mo><mi>i</mi></mrow></msub><mo>=</mo><msub><mi>A</mi><mi>i</mi></msub><mo>+</mo><msubsup><mi>B</mi><mrow><mi>N</mi><mo>−</mo><mi>i</mi></mrow><mrow><mi>′</mi></mrow></msubsup></mrow></math></span>을 만족하는 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>i</mi><mo stretchy="false">(</mo><mn>1</mn><mo>≤</mo><mi>i</mi><mo><</mo><mi>N</mi><mo stretchy="false">)</mo></mrow></math></span>의 개수로 정의한다.</p>
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<p><span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>N</mi></mrow></math></span>과 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>K</mi></mrow></math></span>가 주어질 때, <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>f</mi><mo stretchy="false">(</mo><mi>S</mi><mo stretchy="false">)</mo><mo>=</mo><mi>K</mi></mrow></math></span>인 문자열 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>S</mi></mrow></math></span>를 구해보자.</p>
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</article>
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<article class="section">
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<h2>입력</h2>
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<p>첫째 줄에 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>N</mi></mrow></math></span>과 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>K</mi></mrow></math></span>가 공백으로 구분되어 주어진다. <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mo stretchy="false">(</mo><mn>2</mn><mo>≤</mo><mi>N</mi><mo>≤</mo><mn>200</mn><mspace width="0.167em" /><mn>000</mn></mrow></math></span>; <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mn>0</mn><mo>≤</mo><mi>K</mi><mo><</mo><mi>N</mi><mo stretchy="false">)</mo></mrow></math></span></p>
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</article>
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<article class="section">
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<h2>출력</h2>
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<p>첫째 줄에 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>f</mi><mo stretchy="false">(</mo><mi>S</mi><mo stretchy="false">)</mo><mo>=</mo><mi>K</mi></mrow></math></span>인 문자열 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>S</mi></mrow></math></span>가 존재한다면 <span style="color:#e74c3c;"><code>Yes</code></span>, 아니라면 <span style="color:#e74c3c;"><code>No</code></span>를 출력한다.</p>
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<p>만약 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>S</mi></mrow></math></span>가 존재한다면 둘째 줄에 가능한 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>S</mi></mrow></math></span>를 아무거나 하나 출력한다.</p>
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</article>
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<article class="section">
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<h2>힌트</h2>
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<p>문자열 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>S</mi></mrow></math></span>의 길이 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>i</mi></mrow></math></span>의 접두사는, <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>S</mi></mrow></math></span>의 앞에서부터 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>i</mi></mrow></math></span>개를 순서대로 이어붙인 문자열이다. 예를 들어 <code>abcde</code>의 길이 3의 접두사는 <code>abc</code>이다.</p>
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<p>문자열 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>S</mi></mrow></math></span>의 길이 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>i</mi></mrow></math></span>의 접미사는, <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>S</mi></mrow></math></span>의 뒤에서부터 <span class="math-inline"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>i</mi></mrow></math></span>개를 순서대로 이어붙인 문자열이다. 예를 들어 <code>abcde</code>의 길이 2의 접미사는 <code>de</code>이다.</p>
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</article>
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<article class="section">
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<h2>예제 입력 1 복사</h2>
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<pre class="sampledata" id="sample-input-1">6 4
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</pre>
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</article>
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<article class="section">
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<h2>예제 입력 2 복사</h2>
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<pre class="sampledata" id="sample-input-2">6 1
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</pre>
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</article>
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<article class="section">
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<h2>예제 입력 3 복사</h2>
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<pre class="sampledata" id="sample-input-3">7 6
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</pre>
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</article>
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<article class="section">
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<h2>예제 출력 1 복사</h2>
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<pre class="sampledata" id="sample-output-1">No
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</pre>
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</article>
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<article class="section">
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<h2>예제 출력 2 복사</h2>
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<pre class="sampledata" id="sample-output-2">Yes
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gggkik
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</pre>
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</article>
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<article class="section">
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<h2>예제 출력 3 복사</h2>
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<pre class="sampledata" id="sample-output-3">Yes
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aaaaaaa
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</pre>
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</article>
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</main>
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</body>
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</html>
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