the only tag is rating
// ==UserScript==
// @name rating only
// @namespace http://tampermonkey.net/
// @version 6.9
// @description the only tag is rating
// @author tuwuna
// @include https://codeforces.com/contest/*
// @include https://codeforces.com/problemset/*
// @grant none
// ==/UserScript==
(function() {
'use strict';
if (!document.getElementsByClassName('verdict-accepted').length) Array.from(document.getElementsByClassName('roundbox')).map(e => [e, Array.from(e.children).find(c => c.classList.contains('tag-box'))]).filter(p => p[1] && p[1].title != 'Difficulty' && p[1].title != 'Сложность').forEach(p => p[0].remove())
})();