☰

AtCoderDifficultyDisplay

display a difficulty of AtCoder Problems.

As of 02.03.2020. See ბოლო ვერსია.

  1. // ==UserScript==
  2. // @name         AtCoderDifficultyDisplay
  3. // @namespace    https://github.com/hotarunx
  4. // @version      0.1
  5. // @description  display a difficulty of AtCoder Problems.
  6. // @author       hotarunx
  7. // @match        https://atcoder.jp/contests/*/tasks/*
  8. // @grant        none
  9. // @require      https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js
  10. // @connect      https://kenkoooo.com/atcoder/resources/*
  11. //
  12. // Copyright(c) 2020 hotarunx
  13. // This software is released under the MIT License, see LICENSE.
  14. //
  15. // ==/UserScript==
  16.  
  17. (function () {
  18.     // URL of Estimated difficulties of the problems
  19.     const url = "https://kenkoooo.com/atcoder/resources/problem-models.json";
  20.  
  21.     // get id
  22.     const path = location.pathname.split("/");
  23.     const id = path[path.length - 1];
  24.  
  25.     // get Element of Problem Status
  26.     let element_status
  27.     const main_container = document.getElementById('main-container');
  28.     const elements_p = main_container.getElementsByTagName("p");
  29.     for (let i = 0; i < elements_p.length; i++) {
  30.         const element = elements_p[i];
  31.         if (element.textContent.match("メモリ制限:") || element.textContent.match("Memory Limit:")) {
  32.             element_status = element;
  33.             break
  34.         }
  35.     }
  36.  
  37.     // fetch Information API
  38.     this.fetch(url)
  39.         .then(function (data) {
  40.             return data.json();
  41.         })
  42.         .then(function (json) {
  43.             // search problem
  44.             const problem = json[id];
  45.  
  46.             // if problem exist in json
  47.             if (problem != null) {
  48.                 const difficulty = problem.difficulty;
  49.  
  50.                 // if difficulty is exist
  51.                 if (difficulty != null) {
  52.                     element_status.textContent += " / ";
  53.  
  54.                     // add difficulty value
  55.                     let add_text = "Difficulty: ";
  56.                     if (problem.is_experimental) add_text += "🧪";
  57.                     add_text += difficulty.toFixed();
  58.  
  59.                     // colorize text
  60.                     let color = '#FFFFFF'; // white
  61.                     if (difficulty < 400) color = '#808080'; // gray
  62.                     else if (difficulty < 800) color = '#804000'; // brown
  63.                     else if (difficulty < 1200) color = '#008000'; // green
  64.                     else if (difficulty < 1600) color = '#00C0C0'; // cyan
  65.                     else if (difficulty < 2000) color = '#0000FF'; // blue
  66.                     else if (difficulty < 2400) color = '#C0C000'; // yellow
  67.                     else if (difficulty < 2800) color = '#FF8000'; // orange
  68.                     else if (difficulty < 3200) color = '#FF0000'; // red
  69.                     else if (difficulty < 3600) color = '#E4E4E4'; // silver
  70.                     else /*                  */ color = '#FFD325'; // gold
  71.  
  72.                     const add_span = "<span style='color: " + color + ";'>" + add_text + "</span>";
  73.  
  74.                     element_status.innerHTML += add_span;
  75.                 }
  76.             }
  77.         })
  78. })();