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  <title>喵喵小窝</title>
  
  
  <link href="https://blog.hikariyo.net/atom.xml" rel="self"/>
  
  <link href="https://blog.hikariyo.net/"/>
  <updated>2026-03-13T12:30:00.000Z</updated>
  <id>https://blog.hikariyo.net/</id>
  
  <author>
    <name>生理盐水</name>
    
  </author>
  
  <generator uri="https://hexo.io/">Hexo</generator>
  
  <entry>
    <title>专题训练 - 博弈 I</title>
    <link href="https://blog.hikariyo.net/xcpc/train/games1/"/>
    <id>https://blog.hikariyo.net/xcpc/train/games1/</id>
    <published>2026-03-12T21:05:00.000Z</published>
    <updated>2026-03-13T12:30:00.000Z</updated>
    
    
    <summary type="html">10 道带有 Games 标签的 CF 题目，施工中。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
    <category term="Games" scheme="https://blog.hikariyo.net/tags/Games/"/>
    
  </entry>
  
  <entry>
    <title>图论 - 欧拉回路</title>
    <link href="https://blog.hikariyo.net/xcpc/graph/euler-tour/"/>
    <id>https://blog.hikariyo.net/xcpc/graph/euler-tour/</id>
    <published>2026-03-11T15:47:00.000Z</published>
    <updated>2026-03-11T16:18:00.000Z</updated>
    
    
    <summary type="html">本文主要证明求解欧拉回路的 Hierholzer 算法的正确性。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
    <category term="Graph" scheme="https://blog.hikariyo.net/tags/Graph/"/>
    
  </entry>
  
  <entry>
    <title>题解 - Codeforces Round 1077 (Div. 2)</title>
    <link href="https://blog.hikariyo.net/xcpc/train/cf-round-1077/"/>
    <id>https://blog.hikariyo.net/xcpc/train/cf-round-1077/</id>
    <published>2026-02-24T17:39:00.000Z</published>
    <updated>2026-02-24T17:39:00.000Z</updated>
    
    
    <summary type="html">Codeforces Round 1077 (Div. 2) 部分题解。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
  </entry>
  
  <entry>
    <title>题解 - Codeforces Round 1078 (Div. 2)</title>
    <link href="https://blog.hikariyo.net/xcpc/train/cf-round-1078/"/>
    <id>https://blog.hikariyo.net/xcpc/train/cf-round-1078/</id>
    <published>2026-02-20T18:23:00.000Z</published>
    <updated>2026-02-20T18:23:00.000Z</updated>
    
    
    <summary type="html">Codeforces Round 1078 (Div. 2) 部分题解。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
  </entry>
  
  <entry>
    <title>数学 - FWT</title>
    <link href="https://blog.hikariyo.net/xcpc/math/fast-walsh-trans/"/>
    <id>https://blog.hikariyo.net/xcpc/math/fast-walsh-trans/</id>
    <published>2026-02-20T14:54:00.000Z</published>
    <updated>2026-02-20T14:54:00.000Z</updated>
    
    
    <summary type="html">FWT 公式推导与板子。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Math" scheme="https://blog.hikariyo.net/tags/Math/"/>
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
  </entry>
  
  <entry>
    <title>专题训练 - 构造 II</title>
    <link href="https://blog.hikariyo.net/xcpc/train/cons2/"/>
    <id>https://blog.hikariyo.net/xcpc/train/cons2/</id>
    <published>2026-02-07T15:30:00.000Z</published>
    <updated>2026-02-18T01:30:00.000Z</updated>
    
    
    <summary type="html">10 道带有 Constructive 标签的 CF 题目。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
    <category term="Constructive" scheme="https://blog.hikariyo.net/tags/Constructive/"/>
    
  </entry>
  
  <entry>
    <title>数学 - 初等数论选讲</title>
    <link href="https://blog.hikariyo.net/xcpc/math/number-theory/"/>
    <id>https://blog.hikariyo.net/xcpc/math/number-theory/</id>
    <published>2026-02-06T16:02:00.000Z</published>
    <updated>2026-02-06T16:02:00.000Z</updated>
    
    
    <summary type="html">从最小数原理和数学归纳法出发的初等数论的最基本内容。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Math" scheme="https://blog.hikariyo.net/tags/Math/"/>
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
  </entry>
  
  <entry>
    <title>数学 - 中国剩余定理</title>
    <link href="https://blog.hikariyo.net/xcpc/math/crt/"/>
    <id>https://blog.hikariyo.net/xcpc/math/crt/</id>
    <published>2026-02-03T15:18:00.000Z</published>
    <updated>2026-02-03T15:18:00.000Z</updated>
    
    
    <summary type="html">本文主要记录 exCRT 的数学推导。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Math" scheme="https://blog.hikariyo.net/tags/Math/"/>
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
  </entry>
  
  <entry>
    <title>专题训练 - 构造 I</title>
    <link href="https://blog.hikariyo.net/xcpc/train/cons1/"/>
    <id>https://blog.hikariyo.net/xcpc/train/cons1/</id>
    <published>2026-01-30T16:23:00.000Z</published>
    <updated>2026-01-31T20:22:00.000Z</updated>
    
    
    <summary type="html">10 道带有 Constructive 标签的 CF 题目。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
    <category term="Constructive" scheme="https://blog.hikariyo.net/tags/Constructive/"/>
    
  </entry>
  
  <entry>
    <title>数学 - 异或线性基</title>
    <link href="https://blog.hikariyo.net/xcpc/math/linear-basis/"/>
    <id>https://blog.hikariyo.net/xcpc/math/linear-basis/</id>
    <published>2026-01-29T23:11:00.000Z</published>
    <updated>2026-01-29T23:11:00.000Z</updated>
    
    
    <summary type="html">在有限域 F2 上线性空间的视角下学习异或线性基。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Math" scheme="https://blog.hikariyo.net/tags/Math/"/>
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
  </entry>
  
  <entry>
    <title>字符串 - SAM</title>
    <link href="https://blog.hikariyo.net/xcpc/string/sam/"/>
    <id>https://blog.hikariyo.net/xcpc/string/sam/</id>
    <published>2025-12-25T15:40:00.000Z</published>
    <updated>2025-12-25T15:40:00.000Z</updated>
    
    
    <summary type="html">后缀自动机的应用。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
    <category term="String" scheme="https://blog.hikariyo.net/tags/String/"/>
    
  </entry>
  
  <entry>
    <title>数学 - 多项式</title>
    <link href="https://blog.hikariyo.net/xcpc/math/poly/"/>
    <id>https://blog.hikariyo.net/xcpc/math/poly/</id>
    <published>2025-12-22T18:14:00.000Z</published>
    <updated>2025-12-22T18:14:00.000Z</updated>
    
    
    <summary type="html">使用了多项式加速计算的题目。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Math" scheme="https://blog.hikariyo.net/tags/Math/"/>
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
  </entry>
  
  <entry>
    <title>数学 - 生成函数基础</title>
    <link href="https://blog.hikariyo.net/xcpc/math/generating-functions/"/>
    <id>https://blog.hikariyo.net/xcpc/math/generating-functions/</id>
    <published>2025-12-15T12:14:00.000Z</published>
    <updated>2025-12-15T12:14:00.000Z</updated>
    
    
    <summary type="html">不包含 FFT/NTT 的基础生成函数题目。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Math" scheme="https://blog.hikariyo.net/tags/Math/"/>
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
  </entry>
  
  <entry>
    <title>数学 - 拉格朗日插值</title>
    <link href="https://blog.hikariyo.net/xcpc/math/lagrange-interpolation/"/>
    <id>https://blog.hikariyo.net/xcpc/math/lagrange-interpolation/</id>
    <published>2025-12-15T12:14:00.000Z</published>
    <updated>2025-12-15T12:14:00.000Z</updated>
    
    
    <summary type="html">拉格朗日插值在算法竞赛中的应用。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Math" scheme="https://blog.hikariyo.net/tags/Math/"/>
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
  </entry>
  
  <entry>
    <title>字符串 - Palindrome Series</title>
    <link href="https://blog.hikariyo.net/xcpc/string/palindrome-series/"/>
    <id>https://blog.hikariyo.net/xcpc/string/palindrome-series/</id>
    <published>2025-12-09T00:00:00.000Z</published>
    <updated>2025-12-09T00:00:00.000Z</updated>
    
    
    <summary type="html">Palindrome Series 及其应用</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
    <category term="String" scheme="https://blog.hikariyo.net/tags/String/"/>
    
  </entry>
  
  <entry>
    <title>字符串 - PAM</title>
    <link href="https://blog.hikariyo.net/xcpc/string/pam/"/>
    <id>https://blog.hikariyo.net/xcpc/string/pam/</id>
    <published>2025-12-07T18:30:00.000Z</published>
    <updated>2025-12-07T18:30:00.000Z</updated>
    
    
    <summary type="html">回文自动机。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
    <category term="String" scheme="https://blog.hikariyo.net/tags/String/"/>
    
  </entry>
  
  <entry>
    <title>数学 - 整值函数</title>
    <link href="https://blog.hikariyo.net/xcpc/math/integer-functions/"/>
    <id>https://blog.hikariyo.net/xcpc/math/integer-functions/</id>
    <published>2025-12-04T22:04:00.000Z</published>
    <updated>2025-12-04T22:04:00.000Z</updated>
    
    
    <summary type="html">竞赛视角下阅读《具体数学》第三章：整值函数。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Math" scheme="https://blog.hikariyo.net/tags/Math/"/>
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
  </entry>
  
  <entry>
    <title>字符串 - ACAM</title>
    <link href="https://blog.hikariyo.net/xcpc/string/acam/"/>
    <id>https://blog.hikariyo.net/xcpc/string/acam/</id>
    <published>2025-12-01T21:47:00.000Z</published>
    <updated>2025-12-02T17:54:00.000Z</updated>
    
    
    <summary type="html">AC 自动机。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
    <category term="String" scheme="https://blog.hikariyo.net/tags/String/"/>
    
  </entry>
  
  <entry>
    <title>字符串 - 哈希</title>
    <link href="https://blog.hikariyo.net/xcpc/string/hash/"/>
    <id>https://blog.hikariyo.net/xcpc/string/hash/</id>
    <published>2025-12-01T18:03:00.000Z</published>
    <updated>2025-12-01T18:03:00.000Z</updated>
    
    
    <summary type="html">字符串哈希，但是也有非字符串的哈希。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
    <category term="String" scheme="https://blog.hikariyo.net/tags/String/"/>
    
  </entry>
  
  <entry>
    <title>字符串 - KMP</title>
    <link href="https://blog.hikariyo.net/xcpc/string/kmp/"/>
    <id>https://blog.hikariyo.net/xcpc/string/kmp/</id>
    <published>2025-12-01T17:59:00.000Z</published>
    <updated>2025-12-08T09:35:00.000Z</updated>
    
    
    <summary type="html">KMP 与基础 Border 理论。</summary>
    
    
    
    <category term="XCPC" scheme="https://blog.hikariyo.net/categories/XCPC/"/>
    
    
    <category term="Algo" scheme="https://blog.hikariyo.net/tags/Algo/"/>
    
    <category term="C++" scheme="https://blog.hikariyo.net/tags/C/"/>
    
    <category term="String" scheme="https://blog.hikariyo.net/tags/String/"/>
    
  </entry>
  
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