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: '94000eff387cc5a5',cH: 'mKYZl9PyIgM6jq5Z1I0sSKNihGSqClnD7Hkr4_9CsNM-1747285089-1.2.1.1-VEjpMIwLk7ZrImnfAgh2QlK32pywLu98O6dLHmpI4xMvUMJnILWfZnzlJovpRd6s',cUPMDTk: "\/u\/kzuevqapirqp\/?__cf_chl_tk=l2RJNu3xm9vRsGOthy2l6fgASo8YTgWwbAkoiMYbiL8-1747285089-1.0.1.1-dWoGuBHzYLudvvTA4pCwaZJBXRQH2CaiuDwvOhQs8Mw",cFPWv: 'g',cITimeS: '1747285089',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/u\/kzuevqapirqp\/?__cf_chl_f_tk=l2RJNu3xm9vRsGOthy2l6fgASo8YTgWwbAkoiMYbiL8-1747285089-1.0.1.1-dWoGuBHzYLudvvTA4pCwaZJBXRQH2CaiuDwvOhQs8Mw",md: "jyXfYGmquhg.ZhjOMGK8RNk0tfVbdbQZmEmJLi49DFg-1747285089-1.2.1.1-8jg5MNV_awNpd1CvEcm1UFtbEQV8vWp_5EfhRC9sevqXVVoaY.KGWkSTYSCRRdBiw7jzZh2PzgwAqfoLp2x5JE7XqwEg6Qoq8iBx3cbDrMXDrvV_xYrJXflIgQ4cTsdEuizio3izNXMGuONoS7uBIGW9NGiiRiBM7nThWn3OVuZULNDqsBF5VoAMnE3dqfPkwIEs9M50P_glWLalGD83i0ZAxY8Zc2zAVUNSd.RU1K5yAu1xzjUurTDG06IQrzJj0Rs0_iYwyykSKxLQRP6eg3s507noTwXRTyvGsoRMRuJJc6SUAJeKZ.9MKW5ZuFKt0IhhZQQymurAWLY81el_6VCBMKaJNDPRQcH4vfCFc71oZ4VADNeN3eri6c7giRMtHmXR3oi5GnaKcEGBeQKpDbRszVnZWw7hXoAZCvXuQOjVr5aM07M6zdqAD5gjLjyw3TceQU1DCNZk7bU2hOZZRRCSORQrI3KMfvI9D1rzsDDBejKVVBt4B2jjgHA7YYwmxXETRzarl6GMrJpqqk_RkD93fQm_auvHuJdQC2S05WdBwYJI0K4uMPGiI42pG_5_ljD63LjOgTEJN6xpII_8FjdvC1L4UiM3W4ykgZxzSYI_jH96fis0QNy9KYp5kYkR18UFHnWNSMCf43EZU8Vd3mHO95W1QtvAS0RICdYgdsNxDKAXvcfnfhR12IlgbKgNK9m43VYHpOBPoHJmmi5OnKyeEq1GlgFqT4VIz1OQymni530_NLFYMcMZxXhy3UQ1Sra0rgQYEqqSj3NEKS52_rl0C2luGsXw_R2tPojodxNXWW1XzPrX26tTgUDgqwmX5JeHb9hP6PP8cufjnRp9qgc9EHQo2I2jZVJvg7KnjMzh.HJ60zwKb0C.kn3IljO6CtZKtwnR2B3PUAZT4D5Imk.y_Z3wFNAG_UUB_7FiNMg",mdrd: "eqH05AU4g7bQHJ7XV_qpTHx382eL_qZKGp4B.8VRNbg-1747285089-1.2.1.1-uvUEI1M1EFpcrzrKN588w3yS6K3z4I7ffsEroseoNZvIvrMJpemqK7h0Pgvk48GgpyhYyM3r77tu01KtM.e304tqj5DXEF9PO9u_RhlkZOLYebHlwkZ.1wnEb5wY5o3MLefG2AVOGLE5YRo36WAHTTIyN9STR2OfIWwlG6DDhyELEgwNnOiInU0odpUJMzd3xwuv.41um6jSB48rga3vJNwAt5Gz6BtSRmS19bx.HEGbDCn15wmyDJcGFUIyIh42odDouzvEiSdN.MfiY4OpMAE124SPlWxtKjsfuIMfuAcI5xziCiIh1RcITQ.xc644WjaEW18jnoIYHQJBe0ipR8frLZjr1.3ma_KBYmx1fXhF3HQ6Kch4xXdA_WP7kR8LNreCXuFDvP8nTGOD2FtnbpdSpz12QGbSH0gqKe_BCBzV1.UOEgmoNKp6DTxBKGKOwjtHogFcfNFfANkUGCZ7tKkZAqekpZ1TvJfk7vTeWdTRsGLEBlaG8Nwj__A6KtlPrE1NelSb13ck87tX8hGMJSPZ77iLKXGyviPjhM9hPaeScSaEBTv6l4JGFXmkBmiU9JnLc0ZPdQl4km1zEp3mvNVrqF6cyl0NcpkLUbPCNiP8alM_GsI7ckC.VfABgaxCp3.reQzJ7Q6uH9b3U2bskkFePXtO39VB7MkrAWPZxoFr_rzAHkYuB7Qxs1O4d8xE4mfSFVFgJKNEZ.TJv5pIDi3FNDyLyY8jzHEwj3CyntW43adRDTaMz7EeWHaoHeMYcb6PJ55AOnv.McOvf6jXgEhyZySN2.WRxHDdJpMRa9xJdF7sR3WFYOMRVS.1XFGG9ljEq0MTlZUnVYwl9dOU8Nq1.z3trnm0FCzMptet8DG8mBLltIiJ5RH7sTyx3xYTy3jNIO2DZQJLLaEpD1ct8deeLkByL.BqfGQ2zqSVT5RxF98_VtvIfZWkdrkYEVhKSBtmVusZYWQWFJKgc_rt7R2pFX3LhYGBTazSdRpONwMtDR42K1FY_a7m80Ts5nGCN8xMIZ.Cj6OTS9tJ8p1gp_pZdnLscclUTiRC6Feb7yizisU9trv.0.A1OEb4qKeT.HVqJcUQwdjsma1VpYucTuR8F7RSsJ7_6w_4JWDYa1MWh.64saz.gRvoZXULTUdKVtVc4pw1rXX1EH9RndGzY.lvnBlQg.DKpEfowC0GrTsECVXPk.G_luahP9qhR_ohRX486NkpD1lQJd1QqlPe.WAgBdurtReXPa0B3El_kWJnYjU7BJ6qhj2ffoxfEtGfeejM3zkoKF_1cZidop3sYI7swzRHqon488JnolgTOp6poPYLyLV5Q2oGmY_kNZaFxKCk8EJTdnCyz9YYIJjYvCAAMeo7yRBGtiBxo_2ENDI.jLi3YjbvRpQetFi8lC0tQSl3jFB9N_8FOnggO0bG1j1P4zl4UpM2en3_ppptytZVmCFh_qjVqIX.augoHgczdZyRLlH1Du3Fn0MJVlbzYJFasvPmBfIsoMiSrER6wnNxpYwDYT66HTfwqTUdSKhIjqk00fdu1WmcIX8wf20mDHBjFR3EFPidynoRfAQOXcUFnlWX3tHWA2BHkh9ftMBb4i2whMfWyric6tJQak9koyoonilUBmM9CTPU473OJlLGq1z7VVLXMeDaVo22H0H2jZ9bct9zGdyEjIgsxxy4QURWO7_nA41E64xIOGiv2CWXKh0RyPSJeFghjpLYFqi1FaF0xDcXWl2nD7ckQWgibX.yaeX3f1RJn7GxWG3RqVb7PhRxp44KKJT6U4qpFvgJcUX1ilOj4hs9alr.lCY8hJAdQzgGRt6myOg9fRpCZaTCNXnTbyWj7uCj0aGmIkzvM6et4H4Gd1iXQmBt4D1vTQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=94000eff387cc5a5';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\/kzuevqapirqp\/?__cf_chl_rt_tk=l2RJNu3xm9vRsGOthy2l6fgASo8YTgWwbAkoiMYbiL8-1747285089-1.0.1.1-dWoGuBHzYLudvvTA4pCwaZJBXRQH2CaiuDwvOhQs8Mw" + 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
