// ==UserScript==
// @name typical90-direct-editorial-link
// @namespace https://github.com/hotarunx
// @version 1.0.1
// @description 競プロ典型 90 問に解説リンク（Twitter）を追加する
// @author hotarunx
// @license MIT
// @supportURL https://github.com/hotarunx/typical90-direct-editorial-link/issues
// @match https://atcoder.jp/contests/typical90/tasks/*
// @exclude https://atcoder.jp/contests/typical90/tasks/*/*
// ==/UserScript==
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const problemsApi = [
{
contest_id: "typical90",
id: "typical90_a",
name: "Yokan Party（★4）",
problem_index: "001",
title: "001. Yokan Party（★4）",
},
{
contest_id: "typical90",
id: "typical90_aa",
name: "Sign Up Requests （★2）",
problem_index: "027",
title: "027. Sign Up Requests （★2）",
},
{
contest_id: "typical90",
id: "typical90_ab",
name: "Cluttered Paper（★4）",
problem_index: "028",
title: "028. Cluttered Paper（★4）",
},
{
contest_id: "typical90",
id: "typical90_ac",
name: "Long Bricks（★5）",
problem_index: "029",
title: "029. Long Bricks（★5）",
},
{
contest_id: "typical90",
id: "typical90_ad",
name: "K Factors（★5）",
problem_index: "030",
title: "030. K Factors（★5）",
},
{
contest_id: "typical90",
id: "typical90_ae",
name: "VS AtCoder（★6）",
problem_index: "031",
title: "031. VS AtCoder（★6）",
},
{
contest_id: "typical90",
id: "typical90_af",
name: "AtCoder Ekiden（★3）",
problem_index: "032",
title: "032. AtCoder Ekiden（★3）",
},
{
contest_id: "typical90",
id: "typical90_ag",
name: "Not Too Bright（★2）",
problem_index: "033",
title: "033. Not Too Bright（★2）",
},
{
contest_id: "typical90",
id: "typical90_ah",
name: "There are few types of elements（★4）",
problem_index: "034",
title: "034. There are few types of elements（★4）",
},
{
contest_id: "typical90",
id: "typical90_ai",
name: "Preserve Connectivity（★7）",
problem_index: "035",
title: "035. Preserve Connectivity（★7）",
},
{
contest_id: "typical90",
id: "typical90_aj",
name: "Max Manhattan Distance（★5）",
problem_index: "036",
title: "036. Max Manhattan Distance（★5）",
},
{
contest_id: "typical90",
id: "typical90_ak",
name: "Don't Leave the Spice（★5）",
problem_index: "037",
title: "037. Don't Leave the Spice（★5）",
},
{
contest_id: "typical90",
id: "typical90_al",
name: "Large LCM（★3）",
problem_index: "038",
title: "038. Large LCM（★3）",
},
{
contest_id: "typical90",
id: "typical90_am",
name: "Tree Distance（★5）",
problem_index: "039",
title: "039. Tree Distance（★5）",
},
{
contest_id: "typical90",
id: "typical90_an",
name: "Get More Money（★7）",
problem_index: "040",
title: "040. Get More Money（★7）",
},
{
contest_id: "typical90",
id: "typical90_ao",
name: "Piles in AtCoder Farm（★7）",
problem_index: "041",
title: "041. Piles in AtCoder Farm（★7）",
},
{
contest_id: "typical90",
id: "typical90_ap",
name: "Multiple of 9（★4）",
problem_index: "042",
title: "042. Multiple of 9（★4）",
},
{
contest_id: "typical90",
id: "typical90_aq",
name: "Maze Challenge with Lack of Sleep（★4）",
problem_index: "043",
title: "043. Maze Challenge with Lack of Sleep（★4）",
},
{
contest_id: "typical90",
id: "typical90_ar",
name: "Shift and Swapping（★3）",
problem_index: "044",
title: "044. Shift and Swapping（★3）",
},
{
contest_id: "typical90",
id: "typical90_as",
name: "Simple Grouping（★6）",
problem_index: "045",
title: "045. Simple Grouping（★6）",
},
{
contest_id: "typical90",
id: "typical90_at",
name: "I Love 46（★3）",
problem_index: "046",
title: "046. I Love 46（★3）",
},
{
contest_id: "typical90",
id: "typical90_au",
name: "Monochromatic Diagonal（★7）",
problem_index: "047",
title: "047. Monochromatic Diagonal（★7）",
},
{
contest_id: "typical90",
id: "typical90_av",
name: "I will not drop out（★3）",
problem_index: "048",
title: "048. I will not drop out（★3）",
},
{
contest_id: "typical90",
id: "typical90_aw",
name: "Flip Digits 2（★6）",
problem_index: "049",
title: "049. Flip Digits 2（★6）",
},
{
contest_id: "typical90",
id: "typical90_ax",
name: "Stair Jump（★3）",
problem_index: "050",
title: "050. Stair Jump（★3）",
},
{
contest_id: "typical90",
id: "typical90_ay",
name: "Typical Shop（★5）",
problem_index: "051",
title: "051. Typical Shop（★5）",
},
{
contest_id: "typical90",
id: "typical90_az",
name: "Dice Product（★3）",
problem_index: "052",
title: "052. Dice Product（★3）",
},
{
contest_id: "typical90",
id: "typical90_b",
name: "Encyclopedia of Parentheses（★3）",
problem_index: "002",
title: "002. Encyclopedia of Parentheses（★3）",
},
{
contest_id: "typical90",
id: "typical90_ba",
name: "Discrete Dowsing（★7）",
problem_index: "053",
title: "053. Discrete Dowsing（★7）",
},
{
contest_id: "typical90",
id: "typical90_bb",
name: "Takahashi Number（★6）",
problem_index: "054",
title: "054. Takahashi Number（★6）",
},
{
contest_id: "typical90",
id: "typical90_bc",
name: "Select 5（★2）",
problem_index: "055",
title: "055. Select 5（★2）",
},
{
contest_id: "typical90",
id: "typical90_bd",
name: "Lucky Bag（★5）",
problem_index: "056",
title: "056. Lucky Bag（★5）",
},
{
contest_id: "typical90",
id: "typical90_be",
name: "Flip Flap（★6）",
problem_index: "057",
title: "057. Flip Flap（★6）",
},
{
contest_id: "typical90",
id: "typical90_bf",
name: "Original Calculator（★4）",
problem_index: "058",
title: "058. Original Calculator（★4）",
},
{
contest_id: "typical90",
id: "typical90_bg",
name: "Many Graph Queries（★7）",
problem_index: "059",
title: "059. Many Graph Queries（★7）",
},
{
contest_id: "typical90",
id: "typical90_bh",
name: "Chimera（★5）",
problem_index: "060",
title: "060. Chimera（★5）",
},
{
contest_id: "typical90",
id: "typical90_bi",
name: "Deck（★2）",
problem_index: "061",
title: "061. Deck（★2）",
},
{
contest_id: "typical90",
id: "typical90_bj",
name: "Paint All（★6）",
problem_index: "062",
title: "062. Paint All（★6）",
},
{
contest_id: "typical90",
id: "typical90_bk",
name: "Monochromatic Subgrid（★4）",
problem_index: "063",
title: "063. Monochromatic Subgrid（★4）",
},
{
contest_id: "typical90",
id: "typical90_bl",
name: "Uplift（★3）",
problem_index: "064",
title: "064. Uplift（★3）",
},
{
contest_id: "typical90",
id: "typical90_bm",
name: "RGB Balls 2（★7）",
problem_index: "065",
title: "065. RGB Balls 2（★7）",
},
{
contest_id: "typical90",
id: "typical90_bn",
name: "Various Arrays（★5）",
problem_index: "066",
title: "066. Various Arrays（★5）",
},
{
contest_id: "typical90",
id: "typical90_bo",
name: "Base 8 to 9（★2）",
problem_index: "067",
title: "067. Base 8 to 9（★2）",
},
{
contest_id: "typical90",
id: "typical90_bp",
name: "Paired Information（★5）",
problem_index: "068",
title: "068. Paired Information（★5）",
},
{
contest_id: "typical90",
id: "typical90_bq",
name: "Colorful Blocks 2（★3）",
problem_index: "069",
title: "069. Colorful Blocks 2（★3）",
},
{
contest_id: "typical90",
id: "typical90_br",
name: "Plant Planning（★4）",
problem_index: "070",
title: "070. Plant Planning（★4）",
},
{
contest_id: "typical90",
id: "typical90_bs",
name: "Fuzzy Priority（★7）",
problem_index: "071",
title: "071. Fuzzy Priority（★7）",
},
{
contest_id: "typical90",
id: "typical90_bt",
name: "Loop Railway Plan（★4）",
problem_index: "072",
title: "072. Loop Railway Plan（★4）",
},
{
contest_id: "typical90",
id: "typical90_bu",
name: "We Need Both a and b（★5）",
problem_index: "073",
title: "073. We Need Both a and b（★5）",
},
{
contest_id: "typical90",
id: "typical90_bv",
name: "ABC String 2（★6）",
problem_index: "074",
title: "074. ABC String 2（★6）",
},
{
contest_id: "typical90",
id: "typical90_bw",
name: "Magic For Balls（★3）",
problem_index: "075",
title: "075. Magic For Balls（★3）",
},
{
contest_id: "typical90",
id: "typical90_bx",
name: "Cake Cut（★3）",
problem_index: "076",
title: "076. Cake Cut（★3）",
},
{
contest_id: "typical90",
id: "typical90_by",
name: "Planes on a 2D Plane（★7）",
problem_index: "077",
title: "077. Planes on a 2D Plane（★7）",
},
{
contest_id: "typical90",
id: "typical90_bz",
name: "Easy Graph Problem（★2）",
problem_index: "078",
title: "078. Easy Graph Problem（★2）",
},
{
contest_id: "typical90",
id: "typical90_c",
name: "Longest Circular Road（★4）",
problem_index: "003",
title: "003. Longest Circular Road（★4）",
},
{
contest_id: "typical90",
id: "typical90_ca",
name: "Two by Two（★3）",
problem_index: "079",
title: "079. Two by Two（★3）",
},
{
contest_id: "typical90",
id: "typical90_cb",
name: "Let's Share Bit（★6）",
problem_index: "080",
title: "080. Let's Share Bit（★6）",
},
{
contest_id: "typical90",
id: "typical90_cc",
name: "Friendly Group（★5）",
problem_index: "081",
title: "081. Friendly Group（★5）",
},
{
contest_id: "typical90",
id: "typical90_cd",
name: "Counting Numbers（★3）",
problem_index: "082",
title: "082. Counting Numbers（★3）",
},
{
contest_id: "typical90",
id: "typical90_ce",
name: "Colorful Graph（★6）",
problem_index: "083",
title: "083. Colorful Graph（★6）",
},
{
contest_id: "typical90",
id: "typical90_cf",
name: "There are two types of characters（★3）",
problem_index: "084",
title: "084. There are two types of characters（★3）",
},
{
contest_id: "typical90",
id: "typical90_cg",
name: "Multiplication 085（★4）",
problem_index: "085",
title: "085. Multiplication 085（★4）",
},
{
contest_id: "typical90",
id: "typical90_ch",
name: "Snuke's Favorite Arrays（★5）",
problem_index: "086",
title: "086. Snuke's Favorite Arrays（★5）",
},
{
contest_id: "typical90",
id: "typical90_ci",
name: "Chokudai's Demand（★5）",
problem_index: "087",
title: "087. Chokudai's Demand（★5）",
},
{
contest_id: "typical90",
id: "typical90_cj",
name: "Similar but Different Ways（★6）",
problem_index: "088",
title: "088. Similar but Different Ways（★6）",
},
{
contest_id: "typical90",
id: "typical90_ck",
name: "Partitions and Inversions（★7）",
problem_index: "089",
title: "089. Partitions and Inversions（★7）",
},
{
contest_id: "typical90",
id: "typical90_cl",
name: "Tenkei90's Last Problem（★7）",
problem_index: "090",
title: "090. Tenkei90's Last Problem（★7）",
},
{
contest_id: "typical90",
id: "typical90_d",
name: "Cross Sum（★2）",
problem_index: "004",
title: "004. Cross Sum（★2）",
},
{
contest_id: "typical90",
id: "typical90_e",
name: "Restricted Digits（★7）",
problem_index: "005",
title: "005. Restricted Digits（★7）",
},
{
contest_id: "typical90",
id: "typical90_f",
name: "Smallest Subsequence（★5）",
problem_index: "006",
title: "006. Smallest Subsequence（★5）",
},
{
contest_id: "typical90",
id: "typical90_g",
name: "CP Classes（★3）",
problem_index: "007",
title: "007. CP Classes（★3）",
},
{
contest_id: "typical90",
id: "typical90_h",
name: "AtCounter（★4）",
problem_index: "008",
title: "008. AtCounter（★4）",
},
{
contest_id: "typical90",
id: "typical90_i",
name: "Three Point Angle（★6）",
problem_index: "009",
title: "009. Three Point Angle（★6）",
},
{
contest_id: "typical90",
id: "typical90_j",
name: "Score Sum Queries（★2）",
problem_index: "010",
title: "010. Score Sum Queries（★2）",
},
{
contest_id: "typical90",
id: "typical90_k",
name: "Gravy Jobs（★6）",
problem_index: "011",
title: "011. Gravy Jobs（★6）",
},
{
contest_id: "typical90",
id: "typical90_l",
name: "Red Painting（★4）",
problem_index: "012",
title: "012. Red Painting（★4）",
},
{
contest_id: "typical90",
id: "typical90_m",
name: "Passing（★5）",
problem_index: "013",
title: "013. Passing（★5）",
},
{
contest_id: "typical90",
id: "typical90_n",
name: "We Used to Sing a Song Together（★3）",
problem_index: "014",
title: "014. We Used to Sing a Song Together（★3）",
},
{
contest_id: "typical90",
id: "typical90_o",
name: "Don't be too close（★6）",
problem_index: "015",
title: "015. Don't be too close（★6）",
},
{
contest_id: "typical90",
id: "typical90_p",
name: "Minimum Coins（★3）",
problem_index: "016",
title: "016. Minimum Coins（★3）",
},
{
contest_id: "typical90",
id: "typical90_q",
name: "Crossing Segments（★7）",
problem_index: "017",
title: "017. Crossing Segments（★7）",
},
{
contest_id: "typical90",
id: "typical90_r",
name: "Statue of Chokudai（★3）",
problem_index: "018",
title: "018. Statue of Chokudai（★3）",
},
{
contest_id: "typical90",
id: "typical90_s",
name: "Pick Two（★6）",
problem_index: "019",
title: "019. Pick Two（★6）",
},
{
contest_id: "typical90",
id: "typical90_t",
name: "Log Inequality（★3）",
problem_index: "020",
title: "020. Log Inequality（★3）",
},
{
contest_id: "typical90",
id: "typical90_u",
name: "Come Back in One Piece（★5）",
problem_index: "021",
title: "021. Come Back in One Piece（★5）",
},
{
contest_id: "typical90",
id: "typical90_v",
name: "Cubic Cake（★2）",
problem_index: "022",
title: "022. Cubic Cake（★2）",
},
{
contest_id: "typical90",
id: "typical90_w",
name: "Avoid War（★7）",
problem_index: "023",
title: "023. Avoid War（★7）",
},
{
contest_id: "typical90",
id: "typical90_x",
name: "Select +／- One（★2）",
problem_index: "024",
title: "024. Select +／- One（★2）",
},
{
contest_id: "typical90",
id: "typical90_y",
name: "Digit Product Equation（★7）",
problem_index: "025",
title: "025. Digit Product Equation（★7）",
},
{
contest_id: "typical90",
id: "typical90_z",
name: "Independent Set on a Tree（★4）",
problem_index: "026",
title: "026. Independent Set on a Tree（★4）",
},
];
// AtCoderの問題ページをパースする
/**
* URLをパースする パラメータを消す \
* 例: in: https://atcoder.jp/contests/abc210?lang=en \
* 例: out: (5)['https:', '', 'atcoder.jp', 'contests', 'abc210']
*/
const parseURL = (url) => {
// 区切り文字`/`で分割する
// ?以降の文字列を削除してパラメータを削除する
return url.split("/").map((x) => x.replace(/\?.*/i, ""));
};
const URL = parseURL(window.location.href);
/**
* 表セル要素から、前の要素のテキストが引数と一致する要素を探す
* 個別の提出ページで使うことを想定
* 例: searchSubmissionInfo(["問題", "Task"])
*/
const searchSubmissionInfo = (key) => {
const tdTags = document.getElementsByTagName("td");
const tdTagsArray = Array.prototype.slice.call(tdTags);
return tdTagsArray.filter((elem) => {
const prevElem = elem.previousElementSibling;
const text = prevElem?.textContent;
if (typeof text === "string")
return key.includes(text);
return false;
})[0];
};
/** コンテストタイトル 例: AtCoder Beginner Contest 210 */
document.getElementsByClassName("contest-title")[0]?.textContent ?? "";
/** コンテストID 例: abc210 */
URL[4] ?? "";
/**
* ページ種類 \
* 基本的にコンテストIDの次のパス
* ### 例外
* 個別の問題: task
* 個別の提出: submission
* 個別の問題ページで解説ボタンを押すと遷移する個別の問題の解説一覧ページ: task_editorial
*/
const pageType = (() => {
if (URL.length < 6)
return "";
if (URL.length >= 7 && URL[5] === "submissions" && URL[6] !== "me")
return "submission";
if (URL.length >= 8 && URL[5] === "tasks" && URL[7] === "editorial")
return "task_editorial";
if (URL.length >= 7 && URL[5] === "tasks")
return "task";
return URL[5] ?? "";
})();
/** 問題ID 例: abc210_a */
const taskID = (() => {
if (pageType === "task") {
// 問題ページでは、URLから問題IDを取り出す
return URL[6] ?? "";
}
if (pageType === "submission") {
// 個別の提出ページでは、問題リンクのURLから問題IDを取り出す
// 提出情報の問題のURLを取得する
const taskCell = searchSubmissionInfo(["問題", "Task"]);
if (!taskCell)
return "";
const taskLink = taskCell.getElementsByTagName("a")[0];
if (!taskLink)
return "";
const taskUrl = parseURL(taskLink.href);
const taskIDParsed = taskUrl[6] ?? "";
return taskIDParsed;
}
return "";
})();
/** 問題名 例: A - Cabbages */
(() => {
if (pageType === "task") {
// 問題ページでは、h2から問題名を取り出す
return (document
.getElementsByClassName("h2")[0]
?.textContent?.trim()
.replace(/\n.*/i, "") ?? "");
}
if (pageType === "submission") {
// 個別の提出ページでは、問題リンクのテキストから問題名を取り出す
// 提出情報の問題のテキストを取得する
const taskCell = searchSubmissionInfo(["問題", "Task"]);
if (!taskCell)
return "";
const taskLink = taskCell.getElementsByTagName("a")[0];
if (!taskLink)
return "";
return taskLink.textContent ?? "";
}
return "";
})();
/** 提出ユーザー 例: machikane */
(() => {
if (pageType !== "submission")
return "";
// 個別の提出ページのとき
const userCell = searchSubmissionInfo(["ユーザ", "User"]);
if (!userCell)
return "";
return userCell?.textContent?.trim() ?? "";
})();
/** 提出結果 例: AC */
(() => {
if (pageType !== "submission")
return "";
// 個別の提出ページのとき
const statusCell = searchSubmissionInfo(["結果", "Status"]);
if (!statusCell)
return "";
return statusCell?.textContent?.trim() ?? "";
})();
/** 得点 例: 100 */
(() => {
if (pageType !== "submission")
return 0;
// 個別の提出ページのとき
const scoreCell = searchSubmissionInfo(["得点", "Score"]);
if (!scoreCell)
return 0;
return parseInt(scoreCell?.textContent?.trim() ?? "0", 10);
})();
/**
* 最初に実行される部分
*/
(() => {
const h2 = document.getElementsByClassName("h2")[0];
if (!h2)
return;
const index = Number(problemsApi.find((e) => e.id === taskID)?.problem_index) - 1;
h2.insertAdjacentHTML("beforeend", `<a class="btn btn-info btn-sm" href="${problems[index] ?? "https://atcoder.jp/contests/typical90"}" target="_blank">問題</a>`);
h2.insertAdjacentHTML("beforeend", `<a class="btn btn-info btn-sm" href="${editorials[index] ?? "https://atcoder.jp/contests/typical90"}" target="_blank">解説</a>`);
h2.insertAdjacentHTML("beforeend", `<a class="btn btn-info btn-sm" href="${codes[index] ?? "https://atcoder.jp/contests/typical90"}" target="_blank">コード</a>`);
})();
