for Atom and RSS and KML
It looks like this is a web page, not a feed. I looked for a feed associated with this page, but couldn't find one. Please enter the address of your feed to validate.
<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="360"></head><body><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "leetcode.com",cType: 'managed',cRay: '94a43a3a3c9a393d',cH: '3XvM7NFO.r0qLJAg43OdvIf4ffUJPJg5U58Y6f9YiO4-1749006524-1.2.1.1-JXba_CpvaFUhgCXqq6_MoDS6D.nT1ResVXRUwLUcGnvuhZvMagHvuviG7laAuP8C',cUPMDTk: "\/u\/cppzytfddgwii\/?__cf_chl_tk=3aRuu.RCzBpXe4lNbqtxbz20cd4wNPMMM6Un29Q6L8U-1749006524-1.0.1.1-SwT6.gVkLc82xHoC2mQdSTjqlnd2Yo5BxYs1ao5L4Jc",cFPWv: 'g',cITimeS: '1749006524',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/u\/cppzytfddgwii\/?__cf_chl_f_tk=3aRuu.RCzBpXe4lNbqtxbz20cd4wNPMMM6Un29Q6L8U-1749006524-1.0.1.1-SwT6.gVkLc82xHoC2mQdSTjqlnd2Yo5BxYs1ao5L4Jc",md: "F6PjP6KJyrvDyHnA1RRT3ekjCqVMiQZSX1iQXAdL2_I-1749006524-1.2.1.1-cRCvsT4ACor0.SD_bZ5G9mzhfV1Y1HdRmgiLUoYFGhMgzv.uUNWrPuV0L2sTTsPqVWtOIAfNKRPsbawYwNWLx.Zxve5QDXJDd5YruEL1GDMm5IMVtuyM17.2JrzzctJ7ZA7f4n4fYmfzuKlN.y4neiHx8CJWkm1jf4ye5PUu0AuP3CynS71VcGqjHIA.4QVkqpagzeSjgrAB5nnumcilPqr_QETjrgtO9sbxsqm15dZDTVxrfB3x0e_z07SKcC6Pios_hwdA7ZQCgpSaCPl1whoy_1PwsBsRsZxwP9_97TfhoGyc2E9dEqt9Qiw8hEuVuzXG3uFP8xpwNlu_QYdnU7nB.Yl3b18dvbbqLWjZv33yNEgphseEjEqTGRDLHvg2YG7JlLOSixWKcJnslwdIsDOz7z4LAqd_O55qybcGUZuc0MFtg31lT1DemG2ZrzAQH.nyXrPn5dgJ0wJnW25S_SZt.0Vm7bQhx4YVRbKf7DTZFc21rxraHof3pIEP28VHkNWlITeYoLAV6c5zPddHe_Vhn_0N2.yuTQFnAQT1UwMurGKnpndQqrL1WmIEvwp52PmvApVYeQIPoV63QCc6SpZ2IiZ0ndJxzdHzUvbIk0i9WU5z6Ls71hoUhLamwK_g.vMx4pKT.jGVD2S2d5uI9EhjB.ZxjNMQyvfhbpW7aY.slz.tdPhSNZ9H8FTehJrHOcgphQCNOgo970LYXIx.jrH.jeNOw87eT0Q_MmyYXHVdvWqy3tRM_RrQHFx.g0LQ1SYNgB_5U7f1UbEKh_1LlDQjoNBrBl5xErpgTHK38LJM4YowaNJnO.oe.ibWMykjf6.6oOSt1nLwBP1gct22TqpmtjarhlRPG3Mc_Bqkn4hQL0.DtehaJlUSDTkUFmf0idmknjnsmE57ZOf8usUtr90zmqLD6hnSW5U1owilh_E",mdrd: "fNaeVXMwwrr.BVb.VgeLqZGVA.muif_zBxU54v39qfA-1749006524-1.2.1.1-1dKdhBELpGj_Fh9lLXMdi23Xu6dttbQBAQmTsJbCQfDlEpxI5tUisPlYmEWnq8Y4.1nCuWzsWkaK2YttJm3.E9KJGDk5KAN5b34MvaHijr1HU1Fkd8vxj5MJ_p_h0GDM2Ix4O2A_3lLzS_A4iOobZoTS5bgRh0K1OzWCBr3PgPFMnOKkAwQnSwKo3FjLXmLikvviOTv.IhJlvTnBKOOPXWvL2rZy7lQIb3qWNOojje9BPjoACaZEms5qndKHrQIg4FsaQKeMijRA6ZnU.uf6cAuNaKyE__9lQ.WrnCo1vZ0dFLHsWG0xjSbAFtV0VK5IVXvIoIaaX8oz.lRfoAAhUFapTM1WRNkknnzhjXrQW0K5Y_6sYqoSA.BhkLpU4BPZILUDwFjIf_U2vfiAmuw.CCy6Dp34PRAi3AxkjFtHlQ1Zz1RfPb1J7TDnUiqCbJaviWwo3eSMp01rT0FxxZDIVOz42s5_EbmeJeZwvnCEL6BAmWaUKPAtzxY2DNVedR3vHWDNBF94jq5BfUjm2D2Q40zAw2Dg1mm057nwwomxAZ.HWHPL5mX44tiSCYO7CMtxMRxx5JJkNK7hF_lee8CV7eFDxzw1DgIoJ34CC9AUKu0fRnKEsfpcMjEXlnHxxg4M6IAjyI2Bn65aU_Z.w.0iPQTKOsD7jlhjfvpTYXgoOc8JGAa2OCIoYtMqOnjQdoBRrFQpjpQJnef7gPjO1cCefvbOav40VCFLI3tZGYzNmJN0qnYdab5UQOpuuFkbSi85cLeYZHl0EM9s1OJ8bvOxVBRCZalwC4wJch.gdErVELbII7FjoXIJKPdRRNGzKl1ksRbxmyh1LrStkZLfSQJ8ZFkdMhyrrtXX7CFyZVXBFcf8tGZPjTvO90uhj_JA5eeycHrqGxUL3GOdUWGIEjRYS83IaXqIpSx6fxwmO4x6J0Jmj7uVN0x6wPdCSskLl8VEG7V_0BLsSoz0FmNEXGMw5S524rZuJU4WoFW0._uE216jXj5xT.4tasCKsC5jxrxoBE2r_bwXZgk8FAignFnsFy5HwwB5Rvfa7.6TK.04xd_u80GCkWpMg6zqc26PAyGAGwVodaevRPOJg3OARZ8VD391dw1zjwtENKOyXZQD13OYhlX3IS2saAzWck8TvuPKCnMwyT7.F4Ye3cAGp6SI7ZY7vx_J14Q9T3VkGb.SqDhXys2DdAXOrOmedpMLzZ2stXBLqxDSK7XVUSirNN66287SsWVqc31Ez7b79DOB9KZdDjxvzvWP8.o_r8JeplU9DE_LIkommBcEQifR4rm08Ce505T6gEU4EIgjJV7CmbnAq7qvayOr04.RRhMQmT3FlekcFeQFmqJZLPXSYHEjiX_L1JZ9GmrOQegxDZX4KiTQOai_9Ag8uz8ZuFWjGR9FdHgWWIj9jfYMs2TLfqh1mqIWdsZNXThyxlVERbfBr9mPonn3ILFBgRaX9ehVd_tH0ZZINJc92AgbRHUGQkN60ydJwGdLWwOemlsFCkpczllBttA0uvbhQzZggEdrwkc2ulGxyfvJytoKiZBIpEEvGxwnyhaV8au3o1c1.5mkHhXbLnL3mr10MWbs65Z9FjVy0iTqwaMOK8i_KFK7qy4hPowpkJfMceGk7jFwIKlIZYk6Sc45DB0Bn4t8P4auBzyGNIQLwocTnfilqvacT606DC4iYfs.l1EcILceV82Or3IGzc4_87r_D3WEWyiFUlWpP3dyqz_K3NzUfp13cIZhnQ8xASpN1ABhMtqnPsKE4CQ8iZDRjApzYyNkNentI4rjrj4BCNxPYXfsiy67cMxjL3Bhinc1uj7XVtvEYgS1ePQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=94a43a3a3c9a393d';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/u\/cppzytfddgwii\/?__cf_chl_rt_tk=3aRuu.RCzBpXe4lNbqtxbz20cd4wNPMMM6Un29Q6L8U-1749006524-1.0.1.1-SwT6.gVkLc82xHoC2mQdSTjqlnd2Yo5BxYs1ao5L4Jc" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>
Home · About · News · Docs · Terms
