Add a button to your Codeforces tool bar.
// ==UserScript==
// @name Zen Mode for Codeforces
// @namespace https://subc.rip
// @version 2024-02-19
// @description Add a button to your Codeforces tool bar.
// @author subcrip
// @match https://codeforces.com/contest/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=codeforces.com
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
const contest = window.location.pathname.split('/')[2];
let button = document.createElement('li');
let inner = document.createElement('a');
inner.target = '_blank';
inner.href = `https://codeforces.com/contest/${contest}/problems`;
inner.innerText = 'ZEN MODE';
button.appendChild(inner);
let menu = document.getElementsByClassName('second-level-menu-list')[0];
menu.insertBefore(button, menu.children[2])
})();