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,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgZmlsbD0ibm9uZSI+PHBhdGggZmlsbD0iI0IyMEYwMyIgZD0iTTE2IDNhMTMgMTMgMCAxIDAgMTMgMTNBMTMuMDE1IDEzLjAxNSAwIDAgMCAxNiAzbTAgMjRhMTEgMTEgMCAxIDEgMTEtMTEgMTEuMDEgMTEuMDEgMCAwIDEtMTEgMTEiLz48cGF0aCBmaWxsPSIjQjIwRjAzIiBkPSJNMTcuMDM4IDE4LjYxNUgxNC44N0wxNC41NjMgOS41aDIuNzgzem0tMS4wODQgMS40MjdxLjY2IDAgMS4wNTcuMzg4LjQwNy4zODkuNDA3Ljk5NCAwIC41OTYtLjQwNy45ODQtLjM5Ny4zOS0xLjA1Ny4zODktLjY1IDAtMS4wNTYtLjM4OS0uMzk4LS4zODktLjM5OC0uOTg0IDAtLjU5Ny4zOTgtLjk4NS40MDYtLjM5NyAxLjA1Ni0uMzk3Ii8+PC9zdmc+);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: '94965bea5dacc95f',cH: 'SIBPN0A2dP4CQEhCb2mdDdwIJkEM4bTlNcTObcmixOI-1748861103-1.2.1.1-GrxH0lbLhxlkT4_tmvmS4at6__uCkbk.muVcODog.NZDKSznHugXZQNzulooGjOs',cUPMDTk: "\/u\/hasppeueeerij\/?__cf_chl_tk=aPYsIfv1J4ojf_XhmAhziMOmhM2jgTL4mDkkTFglYtY-1748861103-1.0.1.1-rc6xgUodetf5mfQIgaRtCi9nDrMnjzt5nIq7z2.Qif4",cFPWv: 'g',cITimeS: '1748861103',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/u\/hasppeueeerij\/?__cf_chl_f_tk=aPYsIfv1J4ojf_XhmAhziMOmhM2jgTL4mDkkTFglYtY-1748861103-1.0.1.1-rc6xgUodetf5mfQIgaRtCi9nDrMnjzt5nIq7z2.Qif4",md: "JGR0UnHKKGy455aVW4lpNym75_JDUhtaXIcmTKBsFqU-1748861103-1.2.1.1-iu1WHiQ1qE3qas_8_uh4hcv3dcXspBYS5yqBwmEdxLeceoZa113dJXh04xnDOESecmttpP8KbC4ACbtY8jFtWNs3auhELR7LMM2iMrwcoX1VriS2s9I5ry9Vyf1bl0BI3_PRStQc97JC10vRU8lAMJ.OO.AQD4WuVZ33tdRR7rLmmgVWDMGx107BTTf8RL7Ltz.DKf.WAijdL4VjBnDigA39Vly1G_JJ7dqqtR.IM2RRhQerTZUH6q5NqE8URFKHo5iRTdsTv6xQzGkjU.2kYLP56jrk9GltfPD.ENOzI59pPCG.tlnmnCItA.E6TbMPZT2xx1YDjcoP6CsyY.xQUeKZU9go5BWBuCvySj1kgtctgS2NgzMnWHda4V0aTMxTSsdlHgV9detCIzDBrqnxo2cDvRUZ6IZR512xBiO8WSB6TD7HPUsT0Plf.pF8vz92uVozVfTkJP5pN_vjRHLV6dJ5ZF6tZUeJZMJUTEl8k1FnebRwJ_PqEKHslPQ_lVVrUE984rPuDUWWQgRxV6ViYoKMZVKsKGp3.Uw0Cd2wLIqwfwL2_p2kbp2ZUys2fCG2YTfvqbxbIBFwPIrudLq0zCDjjzg6pJzziQxhpHk40HFput7j9b0O0bZeXj6O34e252iPBLX.tSvGUDpghSXdfHWmUCkiQBq.Wg0vkf9G9s4K7n.mujB8MD9jl49Er0Nnzl5hbsElO3OUhjJdNqEFlqlZMXY8VrhBLhJaHCNmYs.U0Drn67_lOV0C13kXZUwqMnemjMoxWQ8g_6segBfGhnAJe2XkhDFpc_4HXmh1g2NA8fd48Ur19NKg.ftcBI0UqZgYv_hZzIvUQmlXlaswAAVsULEYwPjy1CNsI8dlF1yjIBuVkgVwNpp5PVQhJ4mAAAzHBr95lTk8XkYtQZoi5wr5LXCrlNjaFd4R_jErCbs",mdrd: "73ma4LIAz7Wcx7wrjN0m.VgTExu7hEJPrhRpgt_6hD8-1748861103-1.2.1.1-iYh7DjypFXuht_OiqKC9fihdUzQBMT5qeaG.SUhqseS.UMK06Snbn.YQriTPC3e5fA4zkCmWnH3fiIto8LwnY_8War2fBW1sJUjOKC41E.HQK8rEyybyOgB8z7OLCLMSFIP054HtaUoQcoQQ.ONkD.35sllR882._IcP4bEf24ehyvyTMgbwTW_fwaRxr96LZb.kJ3m_X17oLvy9OxKb.HdOyJAfP1c99UXfCq5uGyIADoHQKbE6HaPrtsHMu4LnqPV_dKCITUNqWXyDHne4fxh.ndQhcf5LJr17LmFTzCY22F6oVmmXuWFDZYo1xrV22cR274YDMCncR9fDJJGYHgpEeqnZt4sT3NOXrq2TCMZtCiHGiiSwCvg3hDql1qSuGuPNAhSLOKQ50Ii98dRXjuf23zOjlWto6i.1ICQKaGq34_KXcmD6y1Fg19RX5dAFzzwONF1ZQvjaiJzcJ3pbvNv6I2RYS5xf5.qwPCFV8zZzKoj5R3oqjh7GMiW1qr4UXCZZjNE2npCjerdPq1PYJQ52E13C0AXo_LDUlNt6BGYj7PmBg5yUVZPYOcxJXEP0ldu2C1cqV6MorTA2q72x4aZckQJ5Jd5E14uqS1VSQUAn4x5FqtYCMJ46nWeM4qH85xLfFPe430zDm0WKgakRY1N0d5l3_poQ09nsAFTTT.4B_.xIaBsGqWVEAmVW0C0d.vuhaOPkefOw8n6HVqODr06bHn58Twv6vX_AtFuooLCxi5uAlNJMknnO9OCiU6OgzSkfcA1V3cyG2aJLDVDAl_tmDEtX22UvKb7uD0f2b9sM2cmgFukR5fw3P_OZDvsnwu.CHLGYqOROGjEXv0LY1v4lWljv.JSh8JFpCwnxhWzmcEzo64lu1bq4vqPFSf.oB8GGiGU_nX0m.uFPrO5fWEwDa.VX29uyjRsuUBC6tdwxUqF6dQw1K0tqY4liiycbjwIEeY.1kaYG8RGdFKE_WJTymvapLbhOFw5QXFFrhdMLtJXzRamRD59NwoS3gnatRzrityDZAOPlk50oibXz_wtUc8XPNicVPBfVxrkbJWAKjtbM_hAsid25CYHLADQ3FYylquEVafzcCvVN1rWYGuM2stmYBZxAIjuRB_kJvkwe5QKgVx0KV1ncyLqph6ds70KB9MHAZUeoD3AjpzfLS_kitwaY89FDDHZTKIn6.NQL..I7LpoVXlL2Bke.kDyR1Ja_dwPBIFy4L3j.BlxMMkqlfoh1cI18GciP90OmOMcAsz7W_ExEM2hySB9Luxsc_btPJpLB2aK8vI0wifyiannQafmP25GODCbqNpaEANZEl_KJCHS0ethbHwYN7NETHBdcqHfBFDq9kyXXM49rXZD6XgbeXhNBag.pOBGDdibLFmlhwrFuQtCYErww35GqoDyZ8Q.eHjO5cQ_dG419tiKXMazTovW4PhVfsKukcO_phYF38GBQhkpuUvSexucu.eVgXEbKznH9b1KRU6g4ExRak9dJC.lZZdpEa9t7yWtNI10PRFdnzGlUCYPTX7X2hVqfj2cI5N.wDCaU2Pa5IjJ9NXipQkAyHB7ik_.xfn0rqdp_1k9.eOO68F0Fj5Ud5BYsKTM94Pt7wWD5aL_92oq6XU6ajxOBCrVLIB8iZd4LdsMoTCnCp1Hk0gozrrClUqSD66smepXA4voOTdGwfZCTgZGMEJDDwV1tSyRdRQVjj7jH1RbrBTeOyKpr6ufdUdL863AWr9OiQauan54BFfMs3okU68wE6MhKPmNXX_NLpmZ_9ijNUmlaOY_uSDsShonpwZFPYrC0sGT8oMqOnBRDuEf0qCZ5bJxR937wY_av5GX.NILD99DANuAF0uMWtL8GEA2eFIa25fm.LONWDg"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=94965bea5dacc95f';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\/hasppeueeerij\/?__cf_chl_rt_tk=aPYsIfv1J4ojf_XhmAhziMOmhM2jgTL4mDkkTFglYtY-1748861103-1.0.1.1-rc6xgUodetf5mfQIgaRtCi9nDrMnjzt5nIq7z2.Qif4" + 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