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: '96d46281eb7ac07e',cH: 's7uT0vNlE_zAcZ3P9ktbgWKuZVwEiUHeXDJ7r8JeVVo-1754880200-1.2.1.1-EmXkYGS2XmFBiH.0VPaA9rzqL3PgU3rfxD6XnZ5XJ70NU3r4gkRr78lcF7UhnStX',cUPMDTk:"\/u\/iewjpooqjqxw\/?__cf_chl_tk=m4V_r3SfUuWWscCXMW9R8BajtCG7RxBMYUNUYvBs_M8-1754880200-1.0.1.1-G2yrRY206Qe_6bvq.OyRYWFMId1u3y.02etAJXNmdJA",cFPWv: 'b',cITimeS: '1754880200',cTplC:0,cTplV:5,cTplB: 'cf',fa:"\/u\/iewjpooqjqxw\/?__cf_chl_f_tk=m4V_r3SfUuWWscCXMW9R8BajtCG7RxBMYUNUYvBs_M8-1754880200-1.0.1.1-G2yrRY206Qe_6bvq.OyRYWFMId1u3y.02etAJXNmdJA",md: 'jSuAx.0cqXkcTbgUFgAdmEBKkADSeqPPdDEeaht9Ips-1754880200-1.2.1.1-P6lrnAm_.XudbRt0hNZbN37Re5D2_ZbENx8HU0Iq2NsQEEM8PIcRW5JinflD0LHyUEQGAR2i8d0akI6GcdarmOBTl5J7tSc9MnYCpKQUL_gL9OoFcgE4QHcHh_fU9FFKdWLloht.Rm2bRSp0a61gXpTV0OlHu5W2X5stLyxdc59GSymH082yymb1yDQHN_.dsWSGM9e27Hk.WrvyBxoL20Liev7TS9FJ8DbUMDYg40wLRNyt6WZ6sc6vNVrzx76XIIheZLs1lSSjmSQDrsIDX45imf9j9WInN9AiapmQ8CI6tk6L5wUfUfiVoO35rCU6njkP3iC3hDZgQrHVEK9I2WF7BsIJuNAlHvEXfTla.WuI5qHznLfvDEQW4UgTQGuOFeuUdVa6clkRHIOeOqfV4vPeDFPuqZ0Q6jBo4q9SWGWhqXF55sQx9HvVNbUI39.rnfOramnM0M4LnvMqP1FtIVjbrlxGvjoo6_a0wBZ329EyecuCPFR7kFiKiBVJqWbDCkHd1xnDkB8PbSACszDPEtFEtSILR0hrbQuioS.3F_DDvDZ0awUp0XxGcq6C3tk3zc5MhjRfwwYah08hc6kTum5k1vJaWHZU5sLLBBTtIRja46Zw9wR8VMrNplFXgzsxZ1jodreVNpSIObYcI3F388RA8RoM07ge1Gk.6LVCs8hsJNhZEOplpCC_ukd4n8iL0JsInCXBUQv5h5YxzdVScx6uHm2WSVa3qCmy15UrUwhkdgMoVrIQiF.vt7BN05qsNHy1hVkaRmOjW.1.k4r90vyPMXLshZtBXMEjpwCjAWWKnoHzSbwxIOkcNPAMzBSeJEBrP91xyb766AQYvNwPXml.eESq_dr1kvTU9duB3WydVG3ihEXxA9rP0VrX7KldFpvhQgKc0hpgMZQ.nJYHbj_AMVD9X0pZupBrY5qrTw0',mdrd: 'E1k4s3LVGhFw.6tX1J.fMa5jy8Y4trOMSAI2RSbVDMo-1754880200-1.2.1.1-NTjQtCrs73T8xBol2yFP4Mdv6GK5Vo8LFVT31bFecUEPtUFJyInmKQs4XxgcHaK.NOzKnwNb7_etCwFWEIwNL9ChwAmIdsXKaTouYj4OQTqgTWHHIBStjd2o0LEq0SpcWEHLMbkAby2dxLZiMQiXzfkE2_DkAr1lkf1NUW4DD4qP83yy7TvAFzGaTxOtx9cKHcnwIIGtfoDFxICetTX02QAZdJdAf7CsV1zzjn_qiBGgVLmNI8fbFjYn010nRTh9YDsfXk3A_glROWop67g_nrMoroFTnbR9.llRyg3G0V4pRjkcLa06mQEPGlpdk.Ok3tL_EnjQ.iMLTMKEUxpZ0FH9LGQ0_ZAb0SoArt_QpX0XzVwIi2_w860Cec6di_r1YZG3xBou4.uJ5As4lf5Zja2PcvKHhNn9IvdIhUjaAj7OpWDcaqMW2EuwX7OLnb0jOGQeKTu30eDzLJkV_UlEUVExYNzDZPCIcQzjETHkFT_vlEpn3YQgfmWyIl824gQOJa.ilLtGLBmPBQYlDsNmhhU1LHKKTnn0DQhUhqqR5uFRm5MPYoN_EoCYcW7Vxg7YnUJ9e6yco_sRNAoAJyXasHNrPSOJwh6qq7Bhp4I5dyI5SjrR86Xb8Hnaqi5iEYdXh2IIe6pd.OHI.Exz_9MdtSLbMZJ6v0eDADStGO23AZl.zIiar2T6XFeJESSjGU_MOFUMT7s0NQPrM19zSA.20d5i2rrIsKS88l_LlXZDhhIRpsgsNHZ92ZvrVjvr1jTmGl5FnbG3kuu6slc7CSSc8WO2dUCnm1_k05PhbKOOK7XHETEy1Q.Cnm1dOuZ_QuawtVqgeXL2nJtmczMbL8ooxjnsAvYsBBP_id08mbWmZOQaS1KWv6GmBRkrt2Ae7pQ02YBnX_XYoeBHkcRcCsxj3S6G.YRAi9LcmyjDZYu6WVM2m3mOUk5wGdzFhy9qrhbSj7UF.3iJzLSOwsPaVSBMS6l936pL0X0JwDswwspGHe_ZuFw7xEI1ZQpHP8iUQ6lPvIGTxVy5NOObaJiZRK4F_yoiscB4TZJW.IjjHYWg2Nm5i.Cuhlt.JyqkO..QOVrdAF8nGtzxaHdjNwvACi5P.jwFNYEFm4gIC_EL1WgOzmNXaP3zI2QDk9vF1Ldvch4x39Kt05sHJzam2CqL5UPKl5wZkfwA1FPHUQKHFZdmlaGLzi5jKErA2_U64NwjI9Qy8vSQwBXmK653XPao8jJtruWSxy1OZXP2s2HrvejXcOmjw.VQja0zRM06fS6i_b1KQmiPwcREQuhheRp_VLClAvOETyBfVoTRimKezmwa77WhbhoPB.m6ixqRSXT1frfcd_h3Mv7Mh.9aTneolfnE7CsT_MUWY7yGq_I.82HGjA3O.ZmrIlQE7DAq4XCSsqHErZ7EGgBsKsflXzO9ESIBI5Q.HsAgls4.YUUmczJvWFlgpJyk7e7UMeIZ.1ZcVQthsOK8PgbEdnxmgEYSqDpo4c8YlZWUpC8I9xRIGCt6W7uS3cEIkc5vOVJDzhuwRmPAuSNKwMzr05dJ0ysmrhtwKoOuuiIuCGHqEQQnNTty_tCfTwo8b.zXGOX1KzKQEvFmmap3B3WgFgt4h7uLxB5gNlDlY4GgDJnxblp4UzGDw5t9HRc7BNazXNXO6LxdVMgFiApt7ZkM66k3YXMcL0QVNI5USQ8Ataj5NSJsvrN6KuLenkEXCvd9VYbgIHWQKy.c2riJZnVQlMcaVMD_KabOxKf70ytKnUTWsbOFvHi7SKRwXvdPnqpk1yba5aW44enO_QZESRiEw1ZAdozBZMFhqURqN8JZ7rcagChazAF1uzQVmKpVchwZyy2FGeRlTUT0WbbcYyZV3NDrNeBzSLfaaw',};var a = document.createElement('script');a.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=96d46281eb7ac07e';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\/iewjpooqjqxw\/?__cf_chl_rt_tk=m4V_r3SfUuWWscCXMW9R8BajtCG7RxBMYUNUYvBs_M8-1754880200-1.0.1.1-G2yrRY206Qe_6bvq.OyRYWFMId1u3y.02etAJXNmdJA"+ 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
