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: '96ab442a1dadfe99',cH: 'MgC6OEdPDFx3y5HuEzpbgNeM1s5.dZtOmYa9vtFqUf8-1754449040-1.2.1.1-KQjKwZKcEuhrlQ9CPVeyWZ6eeLGvFGiAPkpHu5caPNiZpwq_HWI4kep6ATJWOLJj',cUPMDTk:"\/u\/iqynphdsyjnq\/?__cf_chl_tk=YtLRLKMMqwY4znWE6.rCKPxvuJlpHqDN0UbQD3KSkEo-1754449040-1.0.1.1-mF3dUmtoefLRSTgyvK5ufLauRayhwU_aIXBRGkujXIg",cFPWv: 'b',cITimeS: '1754449040',cTplC:0,cTplV:5,cTplB: 'cf',fa:"\/u\/iqynphdsyjnq\/?__cf_chl_f_tk=YtLRLKMMqwY4znWE6.rCKPxvuJlpHqDN0UbQD3KSkEo-1754449040-1.0.1.1-mF3dUmtoefLRSTgyvK5ufLauRayhwU_aIXBRGkujXIg",md: 'LvMeqfkm4gYyTQtcgJaOxnXQs0wuTITV4LoEFcOwxSU-1754449040-1.2.1.1-2tZ5QVLEdDMZPZfqyyIjCYQlarZbZaTKvPaJePW.0VGY64EXaEntG0SN2Mldv7814o60PyabWPz.p4rYutjgDTX66MoHLLWRroTw0zPiFLu21BlB4CaROb3SBVEF.Ld_abdUgKjDsuyObKkYKtCe80VqMdotPuI3uvKMQx4mVi.QHdAy4BikbsHOzKfgUYMZrI.7vxIw6NxIdwzBAfB0RT2lHrKamd0oiklgV3cG86XqaNT8B8Gmoj6TVL8f.NhGN3ABEvToN2nyC5NojbLHLWEb1PuhO2lC3v0Q9tULyfrz7wxy7oTdA9YTW2PMeSiUA_Jar5qnDWXUZH7QrycB97YgNAFLbCF6Y0BcQzg6VR.vFfk8h63ExMd50.bEkn0SM.FpsFo8vPMp_xcbCJgD5p6qpDPKup5rQlC82ESlq3R5X_xR0bgi00v6a9ZVaHyBvdHj3xFHWrjkvH3wkUpw75QlXWBNB9bE1eKBdlEsdg.cyVVMzJ69qhzbR6Mv_8IYAStvwUhgHxdpwqkwQ3NVUU1xKC8TKVNAZHJ4TCw7yajBPkINUu.0afm5.cbRyofLPaV.MINkuLZh7kWNuFJ9pkQy5Vzfk9s7yTySBRob_FGICCZ3H3mI_QUtnywlfVCSclCLuVsTYMbHFbu5mXIXYk_6hKumo2RRxD6AZTHj8ocTzAB6fdnkks.kVlRVrO2JOCCNg4Sy7wS42mFxlIkA2XZHn1oelOmNwhcswkRly5f4sLOscoap.LLjLMrrciBpm4DwatHAyacy_FsIgfaW1UTkGMECn9rUcWCy0x9KJPlQnu8lJRuXeUxXIJLAy9OHSu7QcYfapNSpioy6Xc7AK8ZYWoWm8F9v_.1mHCTE1VgjkH9gnI8tsBZKC0jci0B77eJuVBPYcwwiZb59O0yQkgyj21DdZMS6i3FdJ21DEqk',mdrd: 'iIq0fkT89sosk7vFW9_7rVHwjbiLBhFwETQ5G1zeOIo-1754449040-1.2.1.1-mdUdDxOdJHOSP4JYUBqLYG9cnzpX1GLYrFXnga9q9FSrcDO6O7dGnNvaHdLLaHAqfGRZYtQG_XTzCHP9aSbZNrHAHOhaXUrn8cbHH9FezsTS02VtLH05fK.J4G8wjIa_EmOp1wBI2ZXmaD.eHUwPnskwArRismZIxt4iR9zzA0ALQldMm7nG7FEdpeBmmZJQ86vRvPmpdUAWtvN9vq.6DQs3noF2Yq1DZFg_0eN.Rtts9IhMILQabHApvXO1GMQqq.mFVhoIjpyLkmC8ATfuy2ieXoub7kmlCLySsO4l1vJGHOqPRE2R2jkr6.9dR4V_zru9k3oupkXoVczpaYGoSDfBfSmu2mdjAcQSQa9twDc59xYXgWAIgDtgZq9r3u_NOydjb3AZWRWVIi2UhIYquu0CoeEOCjDTn1klEAJTkoYzPjB6Exq.EspN3Bbe73vvIyY82rO01mSeNuGkyAYPJFZ3hTMK.oTeLzGKuhgonprJWiCGOXjwTmh9ml8wdUovmHionk.k_vSIL_14A8Wfm_JVszepV_EpTco92QA7LVx3EoPmxWXdHd9IPH2Vdo3x4Xe2mdioH4ziYUb0ueJMquEww_suO5ZDGLCmV46kfeRA0JQHzpWLt._IH.qIPuBtjY9._z_ZBs3Es1jrWXr4HQZ65EXODrp0ImxDCbRVwi3IiZyPx9iWRM2jxOI35xHR_mZ9raL6ydzDr814Iqa59gMgJ3eb_lkyaj7gEh0ZCWoQOHWHH8edjv5uoKRAvCE3izmBzABLea88Y1JszgkAD2ToCu8Sk0Sb6liCEUksMf6yvga4JQ3aHIWUmQ5RFg50kZwIlUqb1mGiiU2VDwXKvG569LHo9O20JMTG0Jz61pJA7SzWbTtPOf1ktjpEpUTTq8LhfbWG8tG.9AHcSMFVxrKU8WX5GSbL4gSvQhSJy.aiBcQfuTU_M3pdbTD3vCSvIFa_B32wt9m1kjjh3Bt20Q4VJsiScSAa5pU7t9QYEufvvorQtMW6Jug0nxd24TgbZ3YfryhWXoiKE70Kq0VUAQqFQYJcdk4TYOn9csRBM9nkpGJQIrp6km.BTBQp2_7Ir8GMxDIRpVHN_iB9A29d6w5mMaNyfXBbc3J1WBlFT_Rj1PMNakyNIqxiFDAgG1MPgbI2vMKIjl9G6itTATdygw37XCleNyGzEZ4oHIqY3H.FKq6OlyFBQ4oRfnfr.cz_hN1Df7FEV96mmRvFQSlyA0_nYjFD3N.N.Dy0nfAUHkqlgtD7TQTInLqTpeLKTxeiGBivsksJya6sC_rstywk_Rbq1xqDHCXAcwPmGEIGMdbHNy2p3atgbv8prZclWGIhE9ehzKntllT.lkmva1cPIoW.W1PGZax4vy4NJ1pMZZgkbGUrZxSIUukMlKFczOZyLohy4TEJtVVDy45FaoYFSEsOAhiufGkBLdUEePQoyP9HGhiMleaZwZnI5VM4.OnWd7OyQsZ.1LZy2_YWLPg4ozuTwWzRJNMNsJQnETr1bDKV6GwKnhKtOnR0iYp_54n2nOfMtMj6wHebX0JA9zAhakCQs_0ojesoe2JK02ZBbaBsy_u2Ib4_J8ESce.i6CUVZM0kTdmgG1J4nw3PZp.UhBWtbfMCNDSqyYW.kjBrT0c6.22B58J_oQzqhN2pO41P34GOiyHvhEfjEBwgWJOTFNWKEqiHeSu3DOuJUj564mfpmeIXiBc1MmiTQPEvvy7Ym4IRnS45LhWckeSK45RtxL3Pz5HtsCelTBEzXKmmlqZkXgbBqCV13cB2aRbd2n6_KDKMkRjT5NxfDSgoFowlVdBJr5.fC5O7hWWHI42H9KJ6gdHKjgWTG8IK5O829bPcf2o1oyE7LH1N2KoyfYc5tw',};var a = document.createElement('script');a.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=96ab442a1dadfe99';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\/iqynphdsyjnq\/?__cf_chl_rt_tk=YtLRLKMMqwY4znWE6.rCKPxvuJlpHqDN0UbQD3KSkEo-1754449040-1.0.1.1-mF3dUmtoefLRSTgyvK5ufLauRayhwU_aIXBRGkujXIg"+ 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
