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: '96d467e1fab623d0',cH: 'd9wM8lgga9m2HG1uboRwFj.5m4cv4Rwx1Hyv4ITpcj0-1754880420-1.2.1.1-Ih0Bh3SgZm22.GXByBPy_b0r_l0gCBGTJGz4D9wZFqAxscHMb0bDXI1os91JM67U',cUPMDTk:"\/u\/jdmkdnein\/?__cf_chl_tk=luNab8EaPp0f4_kNBGlRBZN7vYaFXinoIGcoredvP0o-1754880420-1.0.1.1-KtO.HVpcAd4LoLqorneI8JAcxQC5t8DVfRLXdBshGQY",cFPWv: 'b',cITimeS: '1754880420',cTplC:0,cTplV:5,cTplB: 'cf',fa:"\/u\/jdmkdnein\/?__cf_chl_f_tk=luNab8EaPp0f4_kNBGlRBZN7vYaFXinoIGcoredvP0o-1754880420-1.0.1.1-KtO.HVpcAd4LoLqorneI8JAcxQC5t8DVfRLXdBshGQY",md: 'rsii860KHLtrV5rQzhPLgCfLBlYIwyfYXOfL0vy0Pgw-1754880420-1.2.1.1-5aZlJFe0sEch.6NYuz5ianpJVSDY5jraS6G1OyppKBBTEPNpT_BM7jUEwzpaV9UP3v70o4k7.Dd_oy8miS1FeiJIogn1gaHUy4dUsa83uOKBwOX3YO1tI25P33Vg9d3n86SlseHDI1zEDpiNGQot0RkCtF8C4DzLAYaZ9AQngu3fjG5GZtB.jV8u2ZD3qnIVVb8SiHIp8nEwKQoRoJdFU5NfaToHOjm0eN2lOJVCYgDx7kK4r4RGOp_iVTYRh5wUXtg2m2u3DKj9bqAuL4XtIt1O9wVHRWcou8hjROmsZ4Wil2tkMyoCckmnq_ldWmWkwyVqFCfbNtKYlUL7jBANk.l9xh7YHl3ag6WEAQ6pCA649irAupr1rG1K6OO9OAgBJBonV5mpJ0mw6YYRAIbfCRVBkMW8pGI8_40FJ1lnUUk6O2hyqNz32NkCaacu8t0K18HN6Y2TF94weMv1xWqrHjU9x1QAKpfVy5opaQAi.6o9LgKN7SNG_gUg2SmtgR1nCZPdwfNTVwFaQZUth73zk0Cq9ppf0YLzBb5dj41C5d5WgDNz0AZE_3ltLAmseoqO2JTPSQOZjYYudSgN1.ewD2c2.K8fJxcCm9EnkuSGqOMvU_y_kyK.SHrpz3zLwnXhnyyE0wgGFexVsL_sSmtd8CQ2y16lwzUmgWu5ahzxL394BV5LhcXrdccb_ReSYqkeBc7IxFSafCNpFAo2vj0bJXlli1I4eiGxFPmAB8ZwwurXI3fdq43GxZcSCvrNIVBswG3hkvL.zqTVfMHHwJcS.iRpCdfQ8j96ANYp6_.vR8KwjUZQmbznw8qwR.CYFd_DGzSk3eq6Lh3LgpKPkOJoko5GDXKsgmKO_eGCUYAbJsSCTKhLRrqCVhhD0uPQ8Mi2TaAFfIoEvBaz5hMTbBRtn_XEnBI0UN7QhnCxyR52ND0',mdrd: 'pevjJwlZjvmM.FSLWw6YcBDAGjJHGmUWx0Dio1LQY4Y-1754880420-1.2.1.1-AxsTF3F8kSAQ0VpHn7N4w3CNU0ptKc_XSYWIZHFcZ5yqAntDAxKR3Y1wlQvuBYU6zgCFEobbYdU_3JgnmZXEVkrWUQGbizi1RgvJiT3P45JwUE5zotJvdCwYKuZIXfxhU1pQgmppxCy2ASumcMoqhPHC39nEHoAw7iCC45GPijbzXuCm70sPYDqNXZSqRsToyyV42FGZmNQhX2aCavOVpfNyrizVgBDJ9web0.Hvkx6iUWSF10vg_XuJAtnAwAzoT10Alu8tYq66ePtQHpRSMcuTY1HPmv8eg_sXht3Yn0S6O4frlCXCIasoRvagdCn4a8gNRGwgCsEa1g0Y1.0DzUmwc0doD70zjicBjrY0Tjc1w.nzp74yzH2jC5jwCz3RWwQH1xjN5DvBY3B7VwROq_UDR8m_qs_3cyzCLeyPWIP5SVwGTbJxBp9sVXzmUaFVLD5YVq_ZYV8IBZrp8.3zpu4MBh57bhy04LEC0x08MDLMaLieYLILPziIQVu6tVQUNvnOsDFgG_58UNe4JpSAkhTwBfutCN5m73eqS15OTAdqkBm7Wabe3bzeBrhNcBL_Y5bBhtTKVHlrIp2yhr0X9yVeezih9eVTKLW5VEMhKczpXijuWuSWSTaeZG0QCTdeCQCgmTV38Y3Pd7g9Mf3FaP5zvQmQoPPANjHX3RGXQ2vPcVo.F5x4.xqTeiKFSV0e0.4iSgAQH2.5L2zewjXXg8lUms6YJE2_pvA6pN8vEWs2gU5tU94qd5vU4fNfUMNlPlioCJOXpHyK7psw_4DtiwHwT0g148qcukXu2BP0yh33MhFiRYG2OMXoDoQcj5ZLzWTNjfgJX7yR6Er.6sc6EAC4rFhrnz2MPV_yGqAZ_a_3VgmHTlwPkbNoi2VLBUnM_arKs3IjboBlBxmX_GpOM97UI0W0hPsuQm7gcPeis19HKs3635cWaOaPDiqPT7VBokglko9fGsB8C3ZCfTXXZk7KlybDALkLldtCJkVzbr9tk0tDGaFdOc7fb3ZRMUvZ0PaqBv0LWa1wT8AXjcyMf3ZtQu.S9R20_niFlHtxI61EMRYL0PteHhTkmbQoT9a.0Ng21pXiI8m8vHMbFRAl1wu83xwqSBhBiHSlHevBGeeBRJcW0mEeTQIT6_NW2a5oxvcuru_RhOCBrL5knu4WViZ0XtCNAXLafPsWfvDq1rr_FJ.kGIw2zrRNPtgHvdUf0dPP_Az9FkXMtiI70OO1VRbQ_Y.tIffk8U_WTOPJfPjnXoer.td0F.MQNWy4C1FbwoKGdg4PM_3xjV2ZBbGTe_ws_VbapNbnlPOSNnNhnHhMTChEzJtgKu33YcmzsusPWwN2cNGW49Mt2QftBCVA01wRhXhp5eMW6a36mcjXHV5oJsawCxzOHlw53FpEI83b3ImfLhZlLkjzewdodliyd4ondOyWBXAFl5CyguOnTUZz85.f1ZlgrjR8vgZiAT70d145jDtGtWmiMyQ4G356EFL.rceqIHHqGj8SeLu.Hz1P.QLPXnpNNPboa3bo4Aeh9o4DvYr8edyd1gcG_wHbG9oqP6L0X1wguCVlXkJmlcJ7IIfC.3n3U.KHlKmj58U6SAbbmyWobgap_lR.VVMok89vgyFJXXmjH4kozKyOJPhGjn.TZMnbeh1cJyfOxp3dgQap4KA1r7pRLUOwsKfQBi75W3f43tsS8kyHCBhf9jfYTH_EcLPHPpfPhB1aPg4pjwSoEDb6ZrtKlQEUCWGcXIdEpIWsZMQyrs9sssBCRd0bTEcA4MA9_Vas1cv6bfEGjGPET17xVjSrXxbhCokBgqY3r9k5tOYfDZ3sIpYkY9hB6w1KQeraxmzn998O6wXnzxRzNVJgNwGBTdz4WI4GuQ',};var a = document.createElement('script');a.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=96d467e1fab623d0';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\/jdmkdnein\/?__cf_chl_rt_tk=luNab8EaPp0f4_kNBGlRBZN7vYaFXinoIGcoredvP0o-1754880420-1.0.1.1-KtO.HVpcAd4LoLqorneI8JAcxQC5t8DVfRLXdBshGQY"+ 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
