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;padding-left:1.5rem;max-width:60rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{line-height:2.25rem;font-size:1.5rem;font-weight:500}@media (width <= 720px){.h2{line-height:1.5rem;font-size:1.25rem}}#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: '96bb91cd7f31efbc',cH: '0oFZFiucbnZAGS4KxVTC57TgtHoMxIFpal040OI3ADk-1754619993-1.2.1.1-C0Q7S_bP.z2xKI5dMUx2nRHw9Sld1ycVaMxuPd8rtipt9pe2byLzGXxY6wBWqV46',cUPMDTk:"\/u\/mxsjzbcwvost\/?__cf_chl_tk=rTpnHy168E71W0Y7IBVXtgWDRtaj4g9uHsd4f32lRjw-1754619993-1.0.1.1-7Pu53kLa1YiqFU1PLdFpF76nKPI1fyQRxa1KczYz.hM",cFPWv: 'b',cITimeS: '1754619993',cTplC:0,cTplV:5,cTplB: 'cf',fa:"\/u\/mxsjzbcwvost\/?__cf_chl_f_tk=rTpnHy168E71W0Y7IBVXtgWDRtaj4g9uHsd4f32lRjw-1754619993-1.0.1.1-7Pu53kLa1YiqFU1PLdFpF76nKPI1fyQRxa1KczYz.hM",md: 'qUtX_f1FWaXGjdOpFvq4D3crt6v8ty3D7QCZiWeLIaQ-1754619993-1.2.1.1-xZ9C7Kk7uOT7ZO9mxwtIaSsIqfBooe0DV4Cvrwun3ahafHf4OvVbZXEOkbYi1.NcshhUAdcwQvWVQUYyMNaswdomvu.dfJ.sFj.5d8Js8Praojjp3w9eYNt_JYohhMPUCZYm0R1uCdkekwNrm8G4zlml75E8n5FqXRcY6RON.JBO6imvQlrHBNUN4vx8Q6jCyGZujcIrVtBnlaq4FU1dthCuXAr6qlTtMi0qdRaSi7xFmtAT2uD0CpfaitBswU4xAyNrFl5oiPBuHkBji4xcKY3i5RYVEcV6p2L.LyTPEut2RYO1yHnhVQbqXHstQBDi_YwPuqUn.DdSo.ENjrCCx0O4ulRmqELDNHdsQaxZjAchbsz1XqDE.InfJJi7papcQX2h94OljjyhoTxqi0glbQTJdrbFf7QplSF0VYOk6iLJgobPZA.4fvDu.xtTJCy4XpF3PkFyhsMpWHVKMKMoNMKJ_buJExHRES25sD29Qe2voeLW.qQglicqMBVGmrmlpm6hAAI_MqSwCPO3zvRvwhvD9BIbvx7l4eQzY_wWfVF57OOt26F3SLds5lLKTWLnppyquNcYCQ6gIItSAwYi_69yTljhAYcbANQdjiny4CuUZyjVdft9nGI3NNc1HH1vlS8E8EnmpnPQ0H.c.uoDS8ewQeFm6PysRw7N4XZXpQncaLYWPVBAJHwC8FueXRubffJ8X7t5Ye.y_kB90uuYj._p2iXT868UvGy8Jf6TRvuzQiwQ4VPh26YkPnco6rrVvxfNwHvmpnyg56SVhrOV.OKvgVYmMJbvnM0CkdrkucMVz1iC2r9zTzY7Od2SBC3QMFwaSvutHZs7.jdmBKAmKpRVp7CTjfdE9XL6wm5Hixa4sdnGHvj1NTBAmPWmMvNYgHixcMbfucD_APPIjb.hSwSrOZb8wZHdn9Mtwh.3keA',mdrd: '06r3YG43nuLWaVkL4MdnAPhfiEAUYpkyG485n9BoBpg-1754619993-1.2.1.1-ZedoKY0xPBZG2vqvU.rgfN0IogRbHQZFe9P7OlIzrRrZLx5mJ8oPriVa7p_CaLn_QrQlXfOBpPM_8lnxFukmPGspdD7_iX9lamnHJY6yr5MY89WCKMbYvbHCYfc56lMj0I6qx3UzUvVBRSB0dYcMwjn2bOxPLxeYPKvJ8QJG8ouA8MPHvYN6y2AxbD5IK8xX7EcBz7nKReWEykzmvGVa7dSkVSzRwQplEGqBv50Orcqnb_JmKAXJEluR5J3fpDyB5PpUVBPTZLxpQHlJjv.t2zGphL2_ExiDDdhRfWtc316iBdJxDhtchsmboBrjnjC10CO0jqNdtCY_FHdLeVrJjNT4zzTHBOsc6XyhRvzoPP723nkRL9PqVelp2Umtr3AyZWeAtQvN.8fWB3E3GwQXc8TNjcWo79WcK3txXnC9cAmI_x3qWU40yW.bdABg1mTFmM8K4bIHkeOKmUs65VZ_O16izhO0iIQiDdV6Tspe6h_EllHdr.mZdwoF1GU1kRnrw1M04wBlMxJ2WpGXiXYfsfOaDIqXUNll67gZpMyDToTicVQeSSlSksUeqhX9RKl3m9_eEl8d9DS0U7YRCAoEMnBoGFOXStSw7VSvuh1EZ0S4n4eXANJwDa9AGByCcgbsJIToWpo7bDgYKBQg2jsDlT9ZFHP.bFRR75yaRLRYsDG_dIZAjM.0jlXcvH47GCB7LzysvEX16Lg4CcVynrHImN.SCEyR_qTWvkJu_k6fimuPsniv3rOVVpXthW9PsR7rcY0bferRIHn73LHCZVHEtkAkcF4Rd9RdvTAOApl0ildqCs9FNG7sXh9Tf.fZYOxIVP4350chKxBjQqua2D2ZXwPCiNHkaxF_9UQJxFHMsbVTOnAEx9cVxtF2vq4yVfBkkQpQRNnmIiOeUZGHyi1grj2oIp8fHEiYoK3MmZYW9RdzRi05r7eIJRvrwfzOB9WL7W0Ui3vdXVkm8eI.KNiEXXHCWK3mTlTmnN78P4QF6v4huWCZXyHpdPpGOgZ8hWJRKa9U71tnVqIh82I4vk7emDB2FZVW4H1Pfwmgom7Jx3H7uye5RK.0hPzVRibtVz_Uga55x8hFNsyAQjcqDDJD_TJWMc8EzTV_NsrciBGsNIBLvNktPT9qbtX6hBIa0BSUo_qFlhrtu1u8oss2pxE_tyU0HpHxrosBFYstIVYGFe.Kbtv53d8qpZA9_3OMCFN5MROJrJNGns_OlRSjdWYcwM_McjtZRww7dFTpIQC5KsipJ57flKVGh5035nCCqABdVz_po5dWYknJHrf_T082EDqPAHEvXM6bNGCJXyIHxhtAF73QxzUFqmG6bICxdzlYE9wdz8te1rkLIueFn4.HWkHFi5RmkYvkJJ8q49wLgm68arwuHWVaWPOUiSAXQVVbE7o5jnl7tVO2l9oAg_wPWaMwsfUTngXf.vItp5bOz9DFY6wn3bKDykH0qhQZnt0DgQaQeBQhty48AxojJGDa8iscDwy6iceSfdeuqg7arY5UhKs0dr9X9TSROgtgX7fSTiq6fbhz_qir3Rs_2Y1qKhYtVtcpR3GnB.IIorr.fKCfPddBca7cfwIiOEHaCYZZVQXdsDou24IBXHxGOJGQAEbB80oNaRM2lTLiyUbajyRqfwQHp.FtT2uIj0JsJACbirV3TQ5R8GP25gfvBQnEbwGLlq88._GRlrYGfAkOO8J6.8aIbqRQQ9TlcP2DziudKtRA0O.oSIPJX___C0gU8kEdx6Pin5wip5h3uhOX9cqD0vxxWlNP2wpOT.pDFYL3f9QPp7YtKMsSqtqtHsjPtoKCmPh9xaVWLla32fTRQ3BYARVcptBOiSGJJAXNQfSgEPPzacXpFF8mK5EEznOpEg',};var a = document.createElement('script');a.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=96bb91cd7f31efbc';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\/mxsjzbcwvost\/?__cf_chl_rt_tk=rTpnHy168E71W0Y7IBVXtgWDRtaj4g9uHsd4f32lRjw-1754619993-1.0.1.1-7Pu53kLa1YiqFU1PLdFpF76nKPI1fyQRxa1KczYz.hM"+ window._cf_chl_opt.cOgUHash);a.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(a);}());</script></body></html>
Home · About · News · Docs · Terms
