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: '94966fc2fb376fd7',cH: '9N0.SPP5LheaRROGWA.R2Dfsfb.vg8jLS8tqEp8FYto-1748861916-1.2.1.1-Q4zizY2cACNA3ytmrj58MnNdlZM0HS3RLWQPlrqccCu9QuN6hEbEiw.lQh2b_bsD',cUPMDTk: "\/u\/ylxisntomq\/?__cf_chl_tk=W7_sC.4PJGC2uhQL58erdnUelbkkTRW_TDZTxQ9J1oM-1748861916-1.0.1.1-BNYeMbXRQVkYSKYXq5t8PLQ.ASTwwCtcjJkBH1h62us",cFPWv: 'g',cITimeS: '1748861916',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/u\/ylxisntomq\/?__cf_chl_f_tk=W7_sC.4PJGC2uhQL58erdnUelbkkTRW_TDZTxQ9J1oM-1748861916-1.0.1.1-BNYeMbXRQVkYSKYXq5t8PLQ.ASTwwCtcjJkBH1h62us",md: "Ff3sHj3yTUQ5tHMvin3qCE6f47i.hyyBQUNgTEENPWA-1748861916-1.2.1.1-khRHfoo.qfron6FMNXIErPMj4oWpVGQcqntmx_HOJsBXR0BswLAjn5Y9WdPSzJaVtz02NGIuafsIEM9b6zprCAkfbHpmr7nZiMPD5nC1p7Ot0AR3h07q18F9TO4JeIIweoQbK5QPPNO7uVkLbHwj4ooYcWbO7M7m.Vw8ARTkwWlKIfVXfpQM8svIh_Tof0_hxfL13Mz_2uZiqRbfVX29beAIJsaZOz3Xdg955J3V4gEIm0YOGNsHE.S1D3aeXY4djhcdZzNz0jXPO9b.CUuwBQ0b95SdtrGs0umPoQcIgfCyb7Od3SR5JpUebjScPBW5M8sfgS4VJ5R3qQzS3HMTQnwgzg9DRX9mcPP6kAsP8VT4hyZAgkEuv_7iGB9IgwqQMOSggERF_0AQ5e8_GdoIFF_zPzylq_GOQXCAROnIVIwMXLryqq5VNWHvOXFrdwna67h0NNv9_ODMO9AEHpTCsYicmu4E34SjqAUDZpMx0Zg_qFohI.99PA0ar52Y4MnASg8ARtLi69oHGF9Dwk0n6tNgcOsHuxDxsweCoYKfK7ns3RQ3hFze_QZtEQiC95w._EOqcNAQuduEsPB7gd9qMGYLHBj5KJgoWX9dHrnY9mR6kvZhh5jkKeTETowsTCq.4k51Vy.E6zFF5bjHjEE_C0l_xR3wj9veQZpKguRjwIbrz5aP.5FW2cxXNL3E2ICT80jivHpinGWrmntyJ84K7pb3TXABIktUFUKrLegrr.a4BNU99HOpUqPak0CGHdJrfI4nJKBWIYI_BkPhfiOw_DPc_agQvHeHMqtXlOQEXMlTN4KiSFBw46IlulrfI73oS8MeVqZr3jBDIOEFnk5vv7LPfxH1Q_3ImBTFbMROR3iIiKQH.XSsAR2jzbHZf74o0Tm0InpO0w.Zguch21A9znKeORvILDV97rVOd87umxA",mdrd: "bbt29Ky5Uq8A_UbZ3MMDGQvqHiPb3PuzhYTriXQWgmQ-1748861916-1.2.1.1-rv0UQ6AssBI8xykCN7otvD0psePuNirap_NG6bnIW.C9CEeQ5SWawo8HEcnir8I9Ga2_otl_diMSVQS3s4BT_BrlzxHFCjAyXb2wVwPpXRcRtJQmq3mI1DrJdNryVfHIQgyXNr_z0wFCYe07BwZIlD0Ufph475DYSL0R2OXHvnJb2_ZuzMWyTP4zhwblHTZn0.hs3AgZdT6aKZEivIiGoD9fvkWqIc3V328GzPk5pwGBj3LqPzG1j70VigA1u8flNgEeCDU9GvibfnWGzGF6lEop_sKPJNVqZpRXk1W2__yzm8Oi_kzNA6fw.ELqSkxr1HdV9TER6WJvDlWW6pN1UlhYBwR5IYgykXvfPMK2olfzmOy_JqDXsHNYowR4zrukh59Ud2kzICDSGQ.Ezbopu3SKuxajWJA_Mxgg1Ov6hBhjAxxPGOTWkdI_t8e95hv2H9YhyzgUO2lusCcMR9jVexgASvfF9p8ouLc1EjfFZvV1l9vKig69ujKWyvqEGMXaiFDtnpN6Z_Yf._XKtUqT.jQBgX2XuJyzPvFiXvrs6qYlElxZIrI1MYmuo350KnTDvEeSeVdH6Mv3PouxMgiTWVRx9dOC8rrOD6RV.k4NExsLkyZj0Wa2HO0D7gWgV7xpvRbOsm0AzjS9K533.tLFKH.7_Pk6wYuyaDyOowN5eB2wKp6_E5geAn7sHgRit9rMRcx29l5EMxvwXdnY539u97S1a9vIweKvKiH5HihK.sByyYGXmr6YoafhY9j78FKZ3U0BQpVvSxyVYmZKPlelehvgeF1diaPGu0vzsyETyvW0SDoalEMLVS0.OekYq0rjTseNIEU32iT2._WjBtsvhMvFB3kWhqYeY0NQctFK74Exa0SppJNX_eXVEO0VvMbXkmAM43EdKLxIfn.8Spq8.bHeJyFygLv9.JgdfWHEdj.4pdf9MGSxm2jPlK2oMRZhXpVJvQ2J_BSS1OAoEE0TIIZwh0Ol.85U5cuWDfPKMFjIr53JhN5dp3CKXPIpX033XxmBSKvGpim2ZhVgjtgOEWbK0WNyGDbDIvV9SyjJsyGMqTf0n1m5c8P4fGnf6syARWFM5ANp_SYltH8xDgBQlCRs4Kr0xm9c_CKVnlYFDcSxCG1gfEStHIZ.iuWXjv1K4HjyevVOKASBvKZNJFtkqjEDTxl_HY_YC5rLNFDj_OCUVyJCtrJnQO8iDLgI.G_dOwkU65DSLEGMDzITv0yWzAwugjGdNjyAl.t8xjkN8.AryAgcSmkweiASGMgi0z_Ym3E70c7uf8e5tAeXv.baRZIEhrvIOit6GNY9S0_5UEiK8eeHs81D3GQYPJOfYPkBN1Yps5Z0DibP.P4SLeJ6n5qzfIU29MSwABb_hR64XREXhslNXZfkN9tF9bnUwgrwYjm6IBPpBfp75btL4ciz5DjaaJ7b2PL7bDTiCPW.zh3ZIvo.ixf0DaloKFK.4850dHDZO07YpJwIcYfHTJnmquPk8Q5.MG2GtFJS5IRuc82TzdEnoyhRVmBtIzk6oP9FjqXg1NPKzWSfxMUyfgeWPs5h7gaeIMH6hIgMXAV8rbneJdMiebEcfTHntufsfR0.H8qX3XOpzPppp0bBfbSkr6DLTzmGywAy5ey_cBLmAULP57bHypcm5cWDnpPsXu32UHGDGVKFLaHOHS1Xy3rtNKJaSCgdLrSor1TPNhY_vQsrRqtQScDyGEjHoc2wK2FwWg5L.2jFgK.T3HFMNpu57okH26SUNWU4puFFKB9BCpABNvSNLCxjHeRVTBDVcZznj53vFvI69Ljk6DXZ17POJJQovDg.j5WzG9RpkzuoBofcTyxwSoX5GUhb1mAY62MO"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=94966fc2fb376fd7';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\/ylxisntomq\/?__cf_chl_rt_tk=W7_sC.4PJGC2uhQL58erdnUelbkkTRW_TDZTxQ9J1oM-1748861916-1.0.1.1-BNYeMbXRQVkYSKYXq5t8PLQ.ASTwwCtcjJkBH1h62us" + 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
