洛谷题单一键转 vjudge 题单

可以一键复制 vjudge 格式的题单到剪切板，注意到先点到题单的 #problems 页。

// ==UserScript==
// @name         洛谷题单转 VJudge 题单
// @namespace    https://luogu-to-vjudge
// @version      0.2
// @description  将洛谷题单一键导出为 VJudge 可导入的题单格式
// @author       ChatGPT & jianhe
// @match        https://www.luogu.com.cn/problem/list*
// @match        https://www.luogu.com.cn/training/*
// @grant        GM_setClipboard
// ==/UserScript==(function(){'use strict';function extractProblems(){const res=[];document.querySelectorAll('a[href^="/problem/"]').forEach(a=>{const href=a.getAttribute('href');let m;if(m=href.match(/\/problem\/(P\d+)/))res.push({oj:'洛谷',id:m[1]});else if(m=href.match(/\/problem\/(CF[0-9A-Z]+)/))res.push({oj:'CodeForces',id:m[1].slice(2)});else if(m=href.match(/\/problem\/(AT_[\w]+)/))res.push({oj:'AtCoder',id:m[1].slice(3)});else if(m=href.match(/\/problem\/(UVA[0-9]+)/))res.push({oj:'UVA',id:m[1].slice(4)});else if(m=href.match(/\/problem\/(SP\d+)/)){// SPOJ: 需要取题目标题的第一个词const title = a.textContent.trim();const firstWord = title.split(/\s+/)[0];if(firstWord){res.push({oj:'SPOJ',id:firstWord});}}});const mp=new Map();res.forEach(p=>{const k=p.oj+'-'+p.id;if(!mp.has(k))mp.set(k,p);});return [...mp.values()];}function toVJudge(list){return list.map(p=>`[problem:${p.oj}-${p.id}]`).join('\n');}function addButton(){const btn=document.createElement('button');btn.textContent='导出到 VJudge';btn.style.cssText='position:fixed;right:20px;bottom:20px;z-index:9999;padding:8px 12px;border-radius:6px;background:#2d8cf0;color:#fff;border:none;cursor:pointer;';btn.onclick=()=>{const probs=extractProblems();if(!probs.length){alert('未检测到题目');return;}const txt=toVJudge(probs);GM_setClipboard(txt);alert('已复制到剪贴板，可直接粘贴到 VJudge 题单');};document.body.appendChild(btn);}window.addEventListener('load',addButton);
})();