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Luogu Solutions for Codeforces

Add a button to your Codeforces tool bar.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Luogu Solutions for Codeforces
// @namespace    https://subc.rip
// @version      2024-02-17
// @description  Add a button to your Codeforces tool bar.
// @author       subcrip
// @match        https://codeforces.com/problemset/problem/*
// @match        https://codeforces.com/contest/*/problem/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=codeforces.com
// @grant        none
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';
    const url = window.location.pathname.split('/');
    let contest, problem;
    if (url.includes('contest')) {
        contest = url[2];
        problem = url[4];
    } else {
        contest = url[3];
        problem = url[4];
    }
    let button = document.createElement('li');
    let inner = document.createElement('a');
    inner.target = '_blank';
    inner.href = `https://www.luogu.com.cn/problem/solution/CF${contest}${problem}`;
    inner.innerText = 'SOLUTIONS';
    button.appendChild(inner);
    let menu = document.getElementsByClassName('second-level-menu-list')[0];
    menu.insertBefore(button, menu.children[2])
})();