(function () { const cache = {}; function initContestName(cid) { if (!(cid in cache)) { cache[cid] = 'loading'; fetch(`https://codeforces.com/api/contest.standings?contestId=${cid}&from=1&count=1`) .then(r => r.json()) .then(d => { cache[cid] = d.status === 'OK' ? d.result.contest.name : ''; }) .catch(() => { cache[cid] = ''; }); } } const path = location.pathname; const mStatus = path.match(/^\/contest\/(\d+)\/status\b/); const mStand = path.match(/^\/contest\/(\d+)\/standings\b/); const mPersonal = path.match(/^\/submissions\//); const pageType = mStatus ? 'status' : mStand ? 'standings' : mPersonal ? 'personal' : null; const pageCid = mStatus ? mStatus[1] : mStand ? mStand[1] : null; if (pageCid) initContestName(pageCid); let currentSid = ''; const _open = XMLHttpRequest.prototype.open; XMLHttpRequest.prototype.open = function (m, u, a, b, c) { this._u = u; this._a = a; this._b = b; this._c = c; return _open.apply(this, arguments); }; const _send = XMLHttpRequest.prototype.send; XMLHttpRequest.prototype.send = function (body) { if (this._u.includes('/data/submitSource')) { try { let sid, csrf; if (body instanceof FormData) { sid = body.get('submissionId'); csrf = body.get('csrf_token'); } else { const p = new URLSearchParams(body); sid = p.get('currentSubmissionId') || p.get('submissionId'); csrf = p.get('csrf_token'); } this._sid = sid; currentSid = sid; const qs = [ 'action=getDiff', 'previousSubmissionId=20033', `currentSubmissionId=${encodeURIComponent(sid)}`, `csrf_token=${encodeURIComponent(csrf)}` ].join('&'); _open.call(this, 'POST', `https://codeforces.com/data/submissionsDiff?${qs}`, this._a, this._b, this._c); } catch { } } const desc = Object.getOwnPropertyDescriptor(XMLHttpRequest.prototype, 'responseText'); Object.defineProperty(this, 'responseText', { configurable: true, get: () => { const raw = desc.get.call(this); if (!this._u.includes('/data/submitSource')) return raw; try { const j = JSON.parse(raw); const dh = j.diffHtml || ''; const src = dh .replace(//gi, '') .replace(//gi, '\n') .replace(/<(ins|span)[^>]*>/gi, '') .replace(/<\/(ins|span)>/gi, '') .replace(/ /g, ' ') .replace(/</g, '<') .replace(/>/g, '>') .replace(/&/g, '&') .replace(/"/g, '"') .replace(/'/g, "'"); const sid = this._sid; const offerChallenge = 'true'; if (pageType === 'standings') { if (!(pageCid in cache)) initContestName(pageCid); const name = cache[pageCid]; const href = `/contest/${pageCid}/submission/${sid}`; const challengeLink = `/contest/${pageCid}/challenge/${sid}`; return JSON.stringify({ contestName: name, source: src, href, challengeLink, offerChallenge }); } const row = document.querySelector(`tr[data-submission-id="${sid}"]`); if (!row) throw 0; const prob = row.querySelector('td[data-problemid] a'); const prHref = prob.getAttribute('href'); const parts = prHref.split('/'); let effectiveCid = pageType === 'status' ? pageCid : pageType === 'personal' ? ((parts[1] === 'contest' || parts[1] === 'gym') ? parts[2] : pageCid) : pageCid; if (!(effectiveCid in cache)) initContestName(effectiveCid); const contestName = cache[effectiveCid] || 'loading'; let href = (row.querySelector(`a.view-source[submissionid="${sid}"]`) || {}).getAttribute('href') || ''; if (!href.startsWith(`/contest/${effectiveCid}/submission/`) && !href.startsWith(`/gym/${effectiveCid}/submission/`)) { href = `/${parts[1]}/${parts[2]}/submission/${sid}`; } const challengeLink = `/contest/${effectiveCid}/challenge/${sid}`; const t = prob.textContent.trim(); const m2 = t.match(/^([^\s-]+)\s*-\s*(.*)$/); const problemName = m2 ? `(${m2[1]}) ${m2[2]}` : t; const ua = row.querySelector('td.status-party-cell a'); const partyName = ua ? `${ua.textContent.trim()}` : ''; const ve = row.querySelector('.submissionVerdictWrapper>span') || row.querySelector('td.status-verdict-cell span'); const verdict = ve ? ve.outerHTML : 'Compilation error'; return JSON.stringify({ offerChallenge, source: src, href, challengeLink, contestName, problemName, partyName, verdict }); } catch (e1) { try { const j = JSON.parse(raw); const dh = j.diffHtml || ''; const src = dh .replace(//gi, '') .replace(//gi, '\n') .replace(/<(ins|span)[^>]*>/gi, '') .replace(/<\/(ins|span)>/gi, '') .replace(/ /g, ' ') .replace(/</g, '<') .replace(/>/g, '>') .replace(/&/g, '&') .replace(/"/g, '"') .replace(/'/g, "'"); return JSON.stringify({ source: src }); } catch { return JSON.stringify({ source: '' }); } } } }); return _send.apply(this, arguments); }; function addCompareUI() { const header = document.querySelectorAll('.source-popup-header')[1]; if (!header || header.querySelector('#compare-btn')) return; const hackLink = header.querySelector('a[href*="/challenge/"]'); if (!hackLink) return; header.style.whiteSpace = 'nowrap'; header.style.overflow = 'visible'; const box = document.createElement('span'); box.innerHTML = ` `; hackLink.insertAdjacentElement('afterend', box); document.getElementById('compare-btn').addEventListener('click', () => { let prev = document.getElementById('compare-prev').value.trim(); if (!prev) prev = '20033'; const cur = document.getElementById('compare-cur').value.trim(); const token = document.querySelector('input[name="csrf_token"]').value; fetch( `/data/submissionsDiff?${new URLSearchParams({ action: 'getDiff', previousSubmissionId: prev, currentSubmissionId: cur, csrf_token: token })}`, { method: 'POST', credentials: 'same-origin' } ) .then(r => r.json()) .then(j => { const code = document.querySelectorAll('.source-popup-source')[1]; code.innerHTML = j.diffHtml; if (window.PR) PR.prettyPrint(); }) .catch(console.error); }); } new MutationObserver(() => { const codeEls = document.querySelectorAll('.source-popup-source'); if (codeEls.length > 1 && codeEls[1].innerHTML.trim() !== '') { addCompareUI(); } }).observe(document.body, { childList: true, subtree: true }); })();