// ==UserScript== // @name AtCoder Limit Colorizer // @description Colorize AtCoder constraints based on their values // @version 0.1.0 // @homepage https://github.com/sevenc-nanashi/atcoder-limit-colorizer // @author Nanashi. // @match https://atcoder.jp/contests/*/tasks/* // @updateURL https://raw.githubusercontent.com/sevenc-nanashi/atcoder-limit-colorizer/built/index.user.js // @downloadURL https://raw.githubusercontent.com/sevenc-nanashi/atcoder-limit-colorizer/built/index.user.js // @sandbox MAIN_WORLD // ==/UserScript== "use strict";(()=>{function c(n){return n<0n?-n:n}var L="#804000",T="#008000",C="#00a0a0",S="#0000ff",A="#a0a000",H="#ff8000",M="#ff0000",V="#0dcaf0",b=n=>{let e=c(n);return e===998244353n||e===1000000007n?V:e>=10n**10n?M:e>=10n**8n?H:e>=10n**5n?A:e>=1000n?S:e>=100n?C:e>=10n?T:L};var d=n=>{let e="";for(let t of n)if(t.classList.contains("mord"))if(t.childElementCount>0){let r=d(Array.from(t.children));if(r===void 0)return;e+=r}else t.textContent==="\u2212"?e+="-":e+=t.textContent;else if(t.classList.contains("mbin"))e+=t.textContent;else if(t.classList.contains("msupsub")){let r=t.querySelector(".mtight");if(!r){console.warn("msupsub without mtight",t);return}let o=Array.from(r.querySelectorAll(":scope > span")),a=d(o);if(a===void 0)return;e+=`^(${a})`}return e},y=n=>{let e=0,t=[],r="";for(let o of n){if(o==="("){if(e++,e===1)continue}else if(o===")"&&(e--,e===0)){t.push(y(r)),r="";continue}e===0&&o==="\xD7"?(t.push(r),r="",t.push("*")):e===0&&o==="^"?(t.push(r),r="",t.push("^")):r+=o}return r.length>0&&t.push(r),t},m=n=>{let e=structuredClone(n);if(typeof e=="string"||typeof e=="bigint")return BigInt(e);if(e.length===1)return BigInt(e[0]);for(let t=1;t{let t=b(e);for(let r of Array.isArray(n)?n:[n])r.style.color=t},w=n=>{let e=d(n);if(e===void 0||!e.match(/^[0-9\-×\^()]+$/))return;let t=y(e),r=m(t);return g(n,r),r},u=n=>{if(n.classList.contains("mord")){if(n.classList.contains("mathnormal"))return n.textContent??void 0;if(n.children[0]?.classList?.contains("mathnormal"))return n.children[0].textContent??void 0}},z=["mpunct","mrel","mopen","mclose","mop"],I=()=>{let n=Array.from(document.getElementsByTagName("h3")).filter(e=>e.textContent==="\u5236\u7D04"||e.textContent==="Constraints");for(let e of n){let t=e.nextElementSibling;if(!t)return;v(t)}},v=n=>{let e={},t=Array.from(n.querySelectorAll(".katex-html:not([data-alc-colorized])"));for(let r of t){r.setAttribute("data-alc-colorized","true");let o=Array.from(r.querySelectorAll(".base > span")).filter(l=>!!l.textContent),a=[],i={elements:[],maxValue:0n},h=()=>{for(let l of i.elements.filter(s=>u(s))){let s=u(l);s&&(g(l,i.maxValue),e[s]=c(i.maxValue))}i.elements.length=0,i.maxValue=0n},x=()=>{let l=w(a);l!==void 0&&c(l)>i.maxValue&&(i.maxValue=c(l)),a.length=0},p=!1;for(let[l,s]of o.entries()){if(p&&(p=!1,(!u(o[l-2])||!u(s))&&(i.elements.pop(),h())),s.classList.contains("mpunct")&&(p=!0),Array.from(s.classList).some(E=>z.includes(E))){a.length>0&&x(),i.elements.push(s);continue}let f=u(s);f&&e[f]&&(g(s,e[f]),i.maxValue0&&(x(),h())}};setInterval(()=>{I()},100);})(); //# sourceMappingURL=data:application/json;base64,{
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  "sources": ["../src/math.ts", "../src/colors.ts", "../src/index.ts"],
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elements : [elements]) {\n    e.style.color = color;\n  }\n};\n\nconst calculateAndColorize = (elements: HTMLElement[]): bigint | undefined => {\n  const math = katexHtmlToExpr(elements);\n  if (math === undefined) {\n    return;\n  }\n  if (!math.match(/^[0-9\\-\u00D7\\^()]+$/)) {\n    return;\n  }\n  const parsed = parseExpr(math);\n  const result = calculateTree(parsed);\n  paint(elements, result);\n\n  return result;\n};\n\nconst getVariable = (element: HTMLSpanElement): string | undefined => {\n  if (!element.classList.contains(\"mord\")) {\n    return undefined;\n  }\n  if (element.classList.contains(\"mathnormal\")) {\n    return element.textContent ?? undefined;\n  }\n  if (element.children[0]?.classList?.contains(\"mathnormal\")) {\n    return element.children[0].textContent ?? undefined;\n  }\n  return undefined;\n};\n\nconst separators = [\"mpunct\", \"mrel\", \"mopen\", \"mclose\", \"mop\"];\ntype Statement = { elements: HTMLSpanElement[]; maxValue: bigint };\n\nconst colorizeAll = () => {\n  const constraintHeaders = Array.from(\n    document.getElementsByTagName(\"h3\"),\n  ).filter((e) => e.textContent === \"\u5236\u7D04\" || e.textContent === \"Constraints\");\n  for (const header of constraintHeaders) {\n    const constraintRoot = header.nextElementSibling;\n    if (!constraintRoot) {\n      return;\n    }\n    colorizeSection(constraintRoot as HTMLElement);\n  }\n};\nconst colorizeSection = (constraintRoot: HTMLElement) => {\n  const variableMaxes: Record<string, bigint> = {};\n\n  const maths = Array.from(\n    constraintRoot.querySelectorAll(\".katex-html:not([data-alc-colorized])\"),\n  );\n  for (const math of maths) {\n    math.setAttribute(\"data-alc-colorized\", \"true\");\n\n    const elements = Array.from(\n      math.querySelectorAll<HTMLSpanElement>(\".base > span\"),\n    ).filter((e) => !!e.textContent);\n\n    const currentElements: HTMLSpanElement[] = [];\n    const currentStatement: Statement = { elements: [], maxValue: 0n };\n    const colorizeCurrentStatement = () => {\n      for (const e of currentStatement.elements.filter((e) => getVariable(e))) {\n        const variable = getVariable(e);\n        if (!variable) {\n          continue;\n        }\n        paint(e, currentStatement.maxValue);\n        variableMaxes[variable] = abs(currentStatement.maxValue);\n      }\n      currentStatement.elements.length = 0;\n      currentStatement.maxValue = 0n;\n    };\n    const colorizeCurrentElement = () => {\n      const value = calculateAndColorize(currentElements);\n      if (value !== undefined && abs(value) > currentStatement.maxValue) {\n        currentStatement.maxValue = abs(value);\n      }\n      currentElements.length = 0;\n    };\n\n    let willCheckSeparator = false;\n\n    for (const [i, element] of elements.entries()) {\n      if (willCheckSeparator) {\n        willCheckSeparator = false;\n        if (!getVariable(elements[i - 2]) || !getVariable(element)) {\n          currentStatement.elements.pop();\n          colorizeCurrentStatement();\n        }\n      }\n      if (element.classList.contains(\"mpunct\")) {\n        willCheckSeparator = true;\n      }\n      if (Array.from(element.classList).some((c) => separators.includes(c))) {\n        if (currentElements.length > 0) {\n          colorizeCurrentElement();\n        }\n\n        currentStatement.elements.push(element);\n        continue;\n      }\n      const variable = getVariable(element);\n      if (variable) {\n        if (variableMaxes[variable]) {\n          paint(element, variableMaxes[variable]);\n          if (currentStatement.maxValue < variableMaxes[variable]) {\n            currentStatement.maxValue = variableMaxes[variable];\n          }\n        }\n      }\n\n      currentElements.push(element);\n      currentStatement.elements.push(element);\n    }\n    if (currentElements.length > 0) {\n      colorizeCurrentElement();\n      colorizeCurrentStatement();\n    }\n  }\n};\n\nsetInterval(() => {\n  colorizeAll();\n}, 100);\n"],
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}
