disqus:
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title: OI Wiki

# 欢迎来到 **OI Wiki**。[![GitHub watchers](https://img.shields.io/github/watchers/24OI/OI-Wiki.svg?style=social&label=Watch)](https://github.com/24OI/OI-wiki) [![GitHub stars](https://img.shields.io/github/stars/24OI/OI-Wiki.svg?style=social&label=Stars)](https://github.com/24OI/OI-wiki)

[![Word Art](./images/wordArt.png)](https://github.com/24OI/OI-wiki)

**OI** （Olympiad in Informatics，信息学奥林匹克竞赛）在中国起源于 1984 年，是五大高中学科竞赛之一。自 1989 年起，每年还会选拔出国家集训队选手准备 IOI (International Olympiad in Informatics，国际信息学奥林匹克竞赛)。

**OI Wiki** 致力于成为一个免费开放且持续更新的知识整合站点，大家可以在这里学到关于 **OI** 竞赛有趣又实用的知识，我们为大家准备了 **OI** 竞赛中的基础知识、常见题型、解题思路以及常用工具等内容，帮助大家更快速深入地学习 **OI** 竞赛。

本项目受 [CTF Wiki](https://ctf-wiki.github.io/ctf-wiki/) 的启发，在编写过程中参考了诸多资料，在此一并致谢。

本项目文档内容托管在 [GitHub](https://github.com/24OI/OI-wiki)，主要使用 [Issues](https://github.com/24OI/OI-wiki/issues) / [QQ](https://jq.qq.com/?_wv=1027&k=5EfkM6K) / [Telegram](https://t.me/OIwiki) / [Discord](https://discord.gg/xXdYSMq) 进行交流沟通，期待你的加入。

Telegram 群组链接为 [@OIwiki](https://t.me/OIwiki) ， QQ 群号码为 [`588793226`](https://jq.qq.com/?_wv=1027&k=5EfkM6K)，欢迎加入。

## Material color palette 颜色主题

### Primary colors 主色

> 默认 `white`

点击色块可更换主题的主色

<div id="color-button">
<button data-md-color-primary="red">Red</button>
<button data-md-color-primary="pink">Pink</button>
<button data-md-color-primary="purple">Purple</button>
<button data-md-color-primary="deep-purple">Deep Purple</button>
<button data-md-color-primary="indigo">Indigo</button>
<button data-md-color-primary="blue">Blue</button>
<button data-md-color-primary="light-blue">Light Blue</button>
<button data-md-color-primary="cyan">Cyan</button>
<button data-md-color-primary="teal">Teal</button>
<button data-md-color-primary="green">Green</button>
<button data-md-color-primary="light-green">Light Green</button>
<button data-md-color-primary="lime">Lime</button>
<button data-md-color-primary="yellow">Yellow</button>
<button data-md-color-primary="amber">Amber</button>
<button data-md-color-primary="orange">Orange</button>
<button data-md-color-primary="deep-orange">Deep Orange</button>
<button data-md-color-primary="brown">Brown</button>
<button data-md-color-primary="grey">Grey</button>
<button data-md-color-primary="blue-grey">Blue Grey</button>
<button data-md-color-primary="white">White</button>
</div>

<script>
  var buttons = document.querySelectorAll("button[data-md-color-primary]");
  Array.prototype.forEach.call(buttons, function(button) {
    button.addEventListener("click", function() {
      document.body.dataset.mdColorPrimary = this.dataset.mdColorPrimary;
      localStorage.setItem("data-md-color-primary",this.dataset.mdColorPrimary);
    })
  })
</script>

### Accent colors 辅助色

> 默认 `red`

点击色块更换主题的辅助色

<div id="color-button">
<button data-md-color-accent="red">Red</button>
<button data-md-color-accent="pink">Pink</button>
<button data-md-color-accent="purple">Purple</button>
<button data-md-color-accent="deep-purple">Deep Purple</button>
<button data-md-color-accent="indigo">Indigo</button>
<button data-md-color-accent="blue">Blue</button>
<button data-md-color-accent="light-blue">Light Blue</button>
<button data-md-color-accent="cyan">Cyan</button>
<button data-md-color-accent="teal">Teal</button>
<button data-md-color-accent="green">Green</button>
<button data-md-color-accent="light-green">Light Green</button>
<button data-md-color-accent="lime">Lime</button>
<button data-md-color-accent="yellow">Yellow</button>
<button data-md-color-accent="amber">Amber</button>
<button data-md-color-accent="orange">Orange</button>
<button data-md-color-accent="deep-orange">Deep Orange</button>
</div>

<script>
  var buttons = document.querySelectorAll("button[data-md-color-accent]");
  Array.prototype.forEach.call(buttons, function(button) {
    button.addEventListener("click", function() {
      document.body.dataset.mdColorAccent = this.dataset.mdColorAccent;
      localStorage.setItem("data-md-color-accent",this.dataset.mdColorAccent);
    })
  })
</script>