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: '94a48f9e6864a5a9',cH: 'XVj4Q.djfggl2th4pps_IBsjoZcDbuNe2hoNYb910RE-1749010022-1.2.1.1-P4wpyz65pD20YiyisvqeOgcwicWeEghPbW96k.YR1iiQ1ZSgJdZW1aSoPRFmfWHj',cUPMDTk: "\/u\/zlrueanpwqj\/?__cf_chl_tk=.U.Z60qzMGec4gAEI_QgIG1GlqGVLOZ7c90CCVeRpS8-1749010022-1.0.1.1-2Djsbj_uiFBaidEtnz3TAYXryNQHpOvdPlrkcS0GD9I",cFPWv: 'g',cITimeS: '1749010022',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/u\/zlrueanpwqj\/?__cf_chl_f_tk=.U.Z60qzMGec4gAEI_QgIG1GlqGVLOZ7c90CCVeRpS8-1749010022-1.0.1.1-2Djsbj_uiFBaidEtnz3TAYXryNQHpOvdPlrkcS0GD9I",md: "Q9NpntJIk5trgO5XJNY6n_GsziDq0GpKPVfMZf29Dh8-1749010022-1.2.1.1-yUz2xnkiLDv0889HSgkzsL4a8U0ptKRvCcfZFOpRPxQZT2qZQ4Gk_26uif3XsvcV96jyDjMFGMeR3MWGx17dpa_mzsWwlBwDCiABrHEawiOisSA6d_j4ZOviO4hyZEXLRnBhqiuLzoTjM6wCPjrXAqUMt7TarcciaViKl79eg.tH..p4_tYzMtAcoSaThzUScx_UPQEPr0JhKhksR5YGDpd3Rfs9GYei1EU6mB2VnOlytA8vn74ouwCaD4RX._7jKdSTTypTI1aafUNxhfKzPB51fHQjp31rr2Av5S0Ung1VOjgvxeGm6H6sHFX_xxDW3sK67.g5MqHcpgUGBI0_RFSkw8c1sDzuKOmZi8PZEC53gMkMdDLAhk.v8sIACeYE8u2vEk6U.tkL9cuRjjq5mLBtidZ8rrI.2OKl1QDOfQhm3Jtii9RUjD6nb23KwOwwrzOpWNTLQGLMXBPLx5mNS6yFze2iyboaT8HgyxPqDpDfOGKTP21o3CbSA.3a2jrMvo86JLFL4zSBsPF2jq7sReRACNeN.eiJhOdBDcKsLnnvLoBu6Px7ANr4KDbDeIwPexFc_bv9D1AUO_NioUkH2DeJELopSomBjzgQeyAV4iQYyqjJKjqK9VZhJnvn24B1wcqUTEyspAJtU1v37agkxalKjzk8T8EPoleJ1TN7NR7QGGkkhvMKZ4tX5BdHH9lquYx1XMOfyVrUJYVaIq.TIZjvLfaxtllHVdHUrLGsgp2JOAy4RnHmAeVk66t7Ql2f6lgAptzJrsH6Olk31Ca8MboHhMQTBOyAAnRCAg99RtT8hglAjinxtA08QSlHQGjSZnZxFD13_MyYdo_OF4.9SY2b7vEK7ihMIRey.fNgkomJdyrr2m_K_31OKCM5D4voyUBKwiF_VRob7sNv0AgCbuYBj7ef9Aj_kfw2CtpOzaA",mdrd: "RQV98DiZoufkFp_N7xAJVe6Dv8XynOCSD2ij27TXtgU-1749010022-1.2.1.1-GQ7gk92u4BDLNKGhuRpKm9lhGjdPmgWP5lq0g8hkC4yScsBBuI7kgjPoiyogDzACCRw6mw9VcOm7YZcTBVEvO9NwjWLDDjQfBlipazIhUqHdSp4wDj9akqbovvy34ulY8.SG9JVyukcE.1JKTqft0LH7xe77XiB5dP3E1dbvPAe4SX2mn0cn6KF5jRaq6.W5vuKWWPK94yc1fvlQL93u83lkwplwVuQ79WuSbhF_iwO_xfEYDfCEymWFOTXw0E9704GB7MHY_I2QatEYoJVqIiAhxbb5DTlkPrNvJEW.AdbDXtjaPuKqMhxOO3hw05qbNDodRocIMtIMF7Inv9VgqFn8d45vgS9FkEQ4mwYMutK8imUR79RVviYg1HFqq9AW.pMrchf38If4Q3Ydih9dKFnb_cpfPZBk5UVq4mzFC7JZmgMOaqqxiR4S4oZXQKWXwHf8RILXoMhKbMUqvLo9aFGSYUcmOMqJX2uUXROo_MrELjM449qfddnRoPWA2vIhnSL0GZYbnqFRF4LjiwIUXCACiQiTlTx8ew2zHNMUu4NahOgM4FGLreCjqAQfFGz6cdQCyrbsJkmpJfw92yeZ5Of9bSpxkaO7O6wjOFwhKBDmi_1EkYfBDdDfvSK2o9VrmIBQUgsnsy.FTu2b4IOwvYL0x5sjZcaU4qU4uZe48lYczIPA7XLXtla.vR4puIaAb8nVemwQBDblkJ0dH.WnvdO2801JdYCff8tj4XHy.dp2cE1Ac0QpNffIH.3U1j.JHhwEYriu1lRoX68UUG2gU_IRqgQXlf7.qgwgx4mVnutL7VQFdb.UPa0HbwxoiYAeNbsMegRrBXrVO3tmgqpLGfwhIfbCjkBMLqNH7dLFCN.CbTvUFLFkvQlcXGoELFNgynEONQ2sX9Kh0If0ooNFl8wBnI55G.cex8pHFFjRZBnRs79YkMQJ2Usv.pU9zo3X639dzxe7rVwPTW9x9oP6wymPYgjXcMxSN3LcMEH.k_2cpdH6OooZWZy8GnEtHNG4tpcWSNAkpLu9nAmOFISlARG2YBkiWi550P7UbQS3bYBkIfy0FN_.SeqQoZZjxWzAP68OH5IOhTlcwjpP4MhUS5igIkZ3hSqVvK1MdyDmEQPGzwqCh0EVS7gd71evIXH6QJCDYHwjMqeoTcLFkcz1sRKYJ6hAgLOsEkECTQ2smrzYHorSHkei5NWByIsbdX.IGg2KBm1PNyowmUZRaKE6k6_62e3FGaqURAyEVuK1W4A6kvvL0ey8zKh3MEriLEhbjikMhGLdKyE2l8bZsPCJoc673ep3RJ0Em0C_r0.MvMsvJn5YqZLhSE8v62KCNcMTTM.q7Qz._9XVwhXYHad589ihoOpdhUBlp1gPZAYFaW.TKkKRcZVblMV_LrrJ7CV5HLkIPqgR7mrrv2Q2oK8dckhw9QUe3hHEDJJwIP7jbYF6sVY2m8oCivlJ3CZDG24Ymtx1hNoLB9KueOME6zb_2CiF4bZoJ5rNhuDoxkGuXSntSOT44eLznw_cD2z6CjV.N_gyZ5FpF9dl7m4jJ4rw4r5R9K1MpegmwKNJLO1wVasWs38x71N2TkVOe5__E30yK9vvylaEXsVmWvyxqIdZvJtHOAZdmCxDp14Ags9ArwaA9gzS2IFjJckRVqdrfV.D0NGVwPQof9lNcO0IxHdP7sdi91x779gIOY30GyrxXdHzMpzYNPC8RbnkrSXqownIVt1zdSlHaEmoIW29e_iYHasrfYYGwayz_6zbScdxaoGKlFCfYXn8Nsgf9poV_glGmG.LY05fDrsxPr7JdyrJPNJBE.grU2DqOJJ16wD1DGSWffrB0h7GWfTRD6kdbpck"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=94a48f9e6864a5a9';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\/zlrueanpwqj\/?__cf_chl_rt_tk=.U.Z60qzMGec4gAEI_QgIG1GlqGVLOZ7c90CCVeRpS8-1749010022-1.0.1.1-2Djsbj_uiFBaidEtnz3TAYXryNQHpOvdPlrkcS0GD9I" + 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
