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: '96cc104abf102063',cH: 'jk4J.V9AMXleg458.YsAXVnHYnX6tWwkkr1zjKQONHQ-1754792946-1.2.1.1-YRcAN_.A.YKpIcTu40VTKQQACTtKLhivmIxycFOltRyLW_MOzZ1pMEr_qCzQ7AFF',cUPMDTk:"\/u\/xlqnixmogim\/?__cf_chl_tk=x4YuLDOo.ca_oQA7ES21Gk0kEi.iXA2RlEnpFaXoAIs-1754792946-1.0.1.1-G22rxXQE4dds62do6UgjbP_qaLioaJj_YVpTFOBWfnU",cFPWv: 'b',cITimeS: '1754792946',cTplC:0,cTplV:5,cTplB: 'cf',fa:"\/u\/xlqnixmogim\/?__cf_chl_f_tk=x4YuLDOo.ca_oQA7ES21Gk0kEi.iXA2RlEnpFaXoAIs-1754792946-1.0.1.1-G22rxXQE4dds62do6UgjbP_qaLioaJj_YVpTFOBWfnU",md: 'GXqYdBWPIYVa8QnQinJTVGy7x2WXsb6Rc82bv42aJ_0-1754792946-1.2.1.1-oX7l4to0TCwiPWAULgHVdJNWoLmZztBBce.2d_3noaIk0OgIuZpFQ.w99vmFNgJZkZi7kJ1kMWGedMtVg.thLEif6qHkky1wUsku1v0FOgvwZvYL99ZQ7DRJ42G2_vjkrhKjFXUmXBMHem9lIYQdiWBKquB.jVlPHc_gJWm0sZdIrC8RTaUXz.WvKfZY6Igqr8CYFe4twxBWVl5pnLq8FQI9mrXPGj1.u3MPqghtiYKGqqN.hLeaDBcbdPnAcVBOBTkuHhysWxfvbdK8FAzNS9Xu7ZxmT85K5ABqhLlYNS1Wj7r8Zu592.eq2x63CobIe3ljJc82o2hZi6cUTLcHoodx6plOoqXrKYvh9y0jXN5wua35QIcK5fyyh5diC7uKb_S7aXTaFq9Ck81b_D65qukUtGTu_eS2dROITevIThauzM26p9DqvgYjvUUyj0zKvTofGAd2gQWgidoobyPrHBFY8Oym8n0ERGINHkyPOp0p87g3ay7vfSaMHinExD8JRGnUFT64HURQSEr9IvnUHGsg.rDACGAHinzjaDpSRhPk6n1AnRWfjOSP9qildeh7bWIal56EBnB45QBeV51VzwC4eQqHx2Ap7Yu.YcvaZmAAOoACundcAuAHYhhMAh0uizo8fpKwMUBXx4nWhVRdh_w6VgCHEOqbU0Ff2LQy75aIkcytfeGHxWeIdl4d07HAK9wR49epNKrARL5OC9ENFkGh1YZz7kgSP.F3R9Kn066QrbYBJ4SZjao6ySCj58kgxy8H1wL4jxEjxlvubCZ7W08g2ljjXB.9I8uZDTkhi0SermuW6.srpBX7XEwxexqW9L4MLOhCqmdKgX4rFL2dr92I2IlNWHgC1xnKM9Imzfu1veXfG6uu.8mRS2uwwp_kpcogF36xBuEwVd0EI9SdiurNsI4Qa_._CYfPXA35v.o',mdrd: '4REB6LY9ZedzUEYDYORI6WjRATFd5kIbXNhg.kMzOO4-1754792946-1.2.1.1-kQ4lFadyRMH871wD.5tJEkamKJeu5brTHOV5kjehWg1lsbDQjFjzYSJhq4g16hY9rib.c7hofygTATRpRF9BKuUTM81ubGW1uW52aH3ZzTOMXz16I7oHfskZBV95c9fQws5Y4w8aHzfpbvsanOjNwBybt9gCce438vKPzTM3RJWMLvINSySDt0px8tyUn3sYV1DIaHD8s97tdyVoXuTHWgtw3aSKES2Pu_QZyTSLTuIJ6KEzZjkKlISugqoI1uMKuIWTEa0QyLe5iRCqdqND007GELYgF7jViQSQ915cK4QGw3h6BDF8sUDwdV9O8Gy_jThbf4NkMI9w0O8a_wCKv5ybScScs45Hy_Hkj8Z.ADov3fkyD72gsC3.GwTnepxfJ6tx9worjgqFw197O_09yN_ujp8e6uAem7DuFRC6pKWe_ee7MacTGrO.oIePZa12yCg7iOeX5yoYLvBA4aGZ5l3xVaqTLM.SlV4NKBABr_pqKZ9AMxHWwn_ncDa6Jz9eJTV2b8IRfO7BLuwsRjyoRM0qmtHMq9ExwkEiERiz7R2hC_3D99XfU4nmANPh5Xy99D82YtqSjCoEFZQW5cQ2JsOhKAert.0QYW5TWxYRkaC_ax1osHI8vm1A3WgAPThFU8reiRZ29Igh6hgj8zv4stmHsqLJFGHK9PDO2pqKDgO7SWt08BjH_1n9wxEBmpbuwozNMXk4o8sI5Pmy6l69aF_hfF8MztFX8DSJ5CFuX5nsrysGPPbHMg_cGUeOVlMNhiL6OSvAFlcMVUQVrUCbJfRyfT76WHzJivI2_5qUd6I1.1MRNqsaNMVX5rLoeghOi5GCsMudlIvLvRLDDlLs3f4yyxGC_AOWO4DbFrqIgAuIM2eRs6cdfopXY5SHDI1LE3v_3kOhxaKzNmq0mttn1s8gTw9DEDW2HXkeq9zOC6oFSSWEi_1z5ZzNqS77bdDDr7c.8BdRDnwLYv6O7YjUcBUDAsBZPRd0oi5wPdKv4B1XosyCSORQkq54FKVj.PRB3zom53MK1.78kL_jTnYdBD4ZjhanWqewMFPsSIC_WCXRXYGMNZ80aGtXl7zRXA3MhgxY3WIY.2T60wxZcwpw91U9eXUOU5bXQi3nwXe2_JYYKhIBlsmoSsgtc7_O9d0yoRICz.EkM9XALALPjiHqH3QvDWIvATki2Qv8vMOEIqxeWhnYJZuQMujFbP_oiwcjoLlLA0bgNGf21CUTPFwi05JDO3PaziI8rDA1UPo.IiCukVBusnUV4oq7rLO19sGLhgCBiCkZ9XUpK9iQVqkyQ.hCwnGP2BpDUhK0GQV7eBT2FwR7Ppx7zcxGvZN5d9Bg087gV4WMnH38zsk5Cp4dIITdeKsotlKa_zgDDOeVbMImGIPQURxxQaMRkqctj85hmOFOzwR.SM5UvyrPWrPC954KKzNZzemYExp056NcCNWDSfgIgi7E199w1m77rrRQXjFJLgKa7FYwXi51cRq1TPZfeWzQdiJ7L0HsgeqJiA.ivzQ0ZXgTO5q1HCrdZRJnJMO30TzhuyuxY.eR_kouqNSRbR92CAMurz_roLaZ60.c6Su92L5fOP9QWFKvyV2rd_n40jcRzTMSnXQXtQPAPDctLGm_pyoDpFOFUcjS5LRxIZj8yvY3C3NSAdnrgWkNFuPZm2SBTZos0RWo3uhStYOpNre4zxD8p6jtxLxeOTUMzuWMrBINerpEefvZ576Jx_ffe.x6ovZN3Qv7TEhVxcqB_zIxV70J9uPgs4bMwF1_Rl0igDX.IF6_lhKbfoD3BsXuYHZWzk8n6IS5TRxS4IPGVHsTJovDl_rX8QUJCX83m0yJ0ikgJQoKcWjW7IOOaA4jRYVldRfWXJGHCKlwUcYXNZy3vM.j79DpmF6M7l0',};var a = document.createElement('script');a.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=96cc104abf102063';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\/xlqnixmogim\/?__cf_chl_rt_tk=x4YuLDOo.ca_oQA7ES21Gk0kEi.iXA2RlEnpFaXoAIs-1754792946-1.0.1.1-G22rxXQE4dds62do6UgjbP_qaLioaJj_YVpTFOBWfnU"+ 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
