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.

Source: https://leetcode.com/u/bdqxjjuglf/

  1. <!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="390"></head><body class="no-js"><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: '92bb9b8e7c783b41',cH: 'qcixxbhx_NvnZC6PqxAzaTnwfa7yiUj2MPqkdb0nS40-1743882974-1.2.1.1-wGAEDNh9erm5.Wl3fGRJJrFdBR181OuL4_vyvJ0vH444AoaFeHERfF6JXOK1ASSf',cUPMDTk: "\/u\/bdqxjjuglf\/?__cf_chl_tk=s2_3ZyBWdA7sizCkS2ZvJ8CHcaSJIEUsq5LYFPrq7og-1743882974-1.0.1.1-TjbRgiogAPLxdK2xp3uHVB8yRvV2cFwClA8H54ZYlUo",cFPWv: 'g',cITimeS: '1743882974',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/u\/bdqxjjuglf\/?__cf_chl_f_tk=s2_3ZyBWdA7sizCkS2ZvJ8CHcaSJIEUsq5LYFPrq7og-1743882974-1.0.1.1-TjbRgiogAPLxdK2xp3uHVB8yRvV2cFwClA8H54ZYlUo",md: "NdNwBBQT9Rp7HEYOW5tNhVZ_VicfiY7C9K0L36FPqjE-1743882974-1.2.1.1-G2Q0jw.CBmn8UN5hmweC1hreY07ruWKtadAfvmbguSooy08MqH6ul5Esp2twpK1wh6EAnQZGIoCpxTeVPnQ7910TbQiPWi3FgGO_f_5hJ42z6IARYk0mrLb6CwiFcndVRsiAVupuYy7i1VtODc5EEeAY8bR75E78qcHU5waRXLZVvtTHhAT3KxrNFs2dQvwQT7jgTJqSIlz5kml1CMbydcaTpAZOxPhaHOnMZOR1DtgGjJknYCG5LuwIBbg69q8LSimpyaeJne.xT9D8C80D0Jd3O97JcSGim9ehMHK7BBBsbI9qQqQMvU0fAyz4NauZQyy_bRNpFTV8I26q7UK83OAAHCUNCuWe8VBMraiOGYdZAjYjCa0C7qFHEzrU4KOhL1Qs0ZLy_RwIOJws940LDkH6e4qwfoOSy1Yrq512rZdwrBkeHr.yBXs5FZSHS5MkMIfb2Dp.q3B7o.tFXF4AZ.0R292NXbMQAN8yydslOMJhnQb4dUqb1nDCU991Jyort_enxDVkqYSJPJfwMWHP9xFuwL_XB4vlx44Te2JaqtP11TkYjYnL4UV2_U7GkT_PeA0w7VNMIeBHc9.mXDKUO8xNSFNMFPgG6UliLSW2NFELQZJ1j1A97xGS715fI0k9tZ3iKeIsqpJJS.rgLL2cymfQ2P3LT_NWOFc9swJ2Z.5yYCCS28hK3MinIpbXXbUE.nue5Lb3zeTsQ08DtQq5VS1TEShNUoauYOeY_6SluCMp8v8xHVGE46Hi9qlavLDNluMHguqDDb.WiM1HyBZrYemuOynXvM6mTCFzMkvLt2f2jp87X_X1aKqkuARsF7pHrKdEpxkEa3NZvB6hxoVHV93xZc5k8rQm37q6gVaLH_Ca5RFxxcN63UI2jfBJClt8zyf_GDCFijiijRBVBXB0dwwMWINE9rwBBPyPp8XuD01T.6hcT0SenBQnCuE.MHa7HGhnxUUFo2VJ1gjPDrm5zublEqArLurfTXBFqi835eACcBehhOxjNFbUAPawfMndR_87g4CLazFc7Hem3TxVXw",mdrd: "DSejkZwW2OGltREChgnXaWOOlEk1tgtT9q9I5RW94xw-1743882974-1.2.1.1-36z.9dQqw5frUrzUkPn1w.UUCU65zoCCAiqUkX_KlHHr4th.3uefILIa7qiY52kRwo94BH.It5dFNmcRho5Rpf66HSpVY8ag7mT1G0dysNltM57pJmczioy2A2ak_89lVUbO68tZ6nz2b3ZepgKw7jmz_bW_PO588oXXaEGjtkWfKFzixWvUafd1bZdk5E8eXZkcdLfL3pTCah9wpU8bQM3VN5mhVnrK.xX8qerWgEk6u06xfkFnU4t8RZctVPwoc7biTAMpuhCXApi5DECqQTI6nXzke740TV8MN1B_MPaklK7fhm7by7vqLJl1l9Z8DXMz7I5zs.UzZSRHGXdnU3xM6yDRktNvnL46sG4Ate6dRjDyaUlv6FDf4HjGef3yO2bzxQ5DNNewZBrE9XPPDQGYu7jfH6xKFMRjZsiDjxyzgn6A.Mwhzfv0F2lO_ZbExvRj3eb4auEyrYd1zSYixD.3.pwppMcaiEDTmfF32wxsI7A8Zh6SDs6Z6Ve0SgmoGlaMCQmzU_3SVMZPdsc_H.A4tjF7VjjQj.5cDOzUh0K4yTUWxVPO15ps6cHhdMtIxaWGhXQ6aH9dwNjTB0ruVncvTwlMw9rCuVfiuIOwkgiebId59BXdH3S1E7SRTsg5Cnv.U.ql78HgvucolUKEYLf_VYiiwD8PBEIkNMlxfNc2hIH_DnpX.y2xZN2Oef38OvUGHfjo.69pm2_2db7eBQ1BgY5k.dvF8bDgMGQBaR_9smhwavVlfKW8WALr1LxfSsPi1u5WFOk8U.xap1HDlKE2FyBe_po9DRmYi5aDfg1X1Lb_wmSvpmbCACXgl7Ro41OukfGPNglZVeydCpBFQEe0fPeBEGZ.Y.tDlOZ11sWoWcSAQcGOStkiR3wB1lBuffpeHOKFDhfnYmgCVhX7V4TCTvrVv0WwDw3Xn.YJ877vHxex0ZD1cGk4eDydLLXpRVJJr64dqnZ.vCnWYnCr3f2f_LtOkOT1jqTExxveCP64JIwfDqOUknF8c8qWctRhy86ZTowgAah6i8nMXxY1zjQoMMQlcNhawOVLcPGhxmj37Ec4HRnBbxV2NyhJW51JnlWQcuJhxJUsA2plcpNAXp8IoBrne62yiN1P1YX1ubzxcOe60Qv8SImlCJD.9Ix9qi7Go9jE5p_4E9k4u_QedpLzypzAYd6Ad6UyZjyKZFh4jrWTuSIh91dsCTgfFPAh7vIUGOvpR.G2o7HD3Dr4xBpxeF7oJHqTbRqsPIGPKFv._5MoCDcx6ebwl44ln1_rf5yRLZ0gutxaIHDYgrojlJ6a0jFAn5OHtlWqwzUSCTTlL75z_DaljOkrcal3m67560XwAwuelAV.YqpPTDQsHApbABrjsCK31vO5vlyESoanSWo6AuGFBCpuEwfk46H8WjMvQYoPUHh_S6nEso66lH0eDIex2Ch1oIOX3Q4cq52H5DhSoIP2nCTJgXuaSHIvNR61Dcp2jpqTNV_bn3hdaDtslfg__mf9GWkMb.ubm5HodUmL1cTlafPbAOcf__Ebnt1IkHvNysFgexDEd_Z4tg1Q6HE0ec3TWepGEs31GfmS_FvyLz7EGTfI4B22cm.AAe07MSDoBJaT9sCDypNf_DqjyxdZ6ps_.ag3hIv5QlBamJBuFovXN1dDGNZABFLQDI8nbj2cn8k.1Vk.Sxbj18fdxNwUPP3KPwHUs4_GDHduVddHVLtDaLvkNPCgO57sGqi7wsbR5zuXmIFiuuxotY8OaHI8NNshVoB3.Hn2CfzDScpa3ucMfWngIj3qBDrl5CQVXPINu4nRWCNK2GDuhiDSr8bzZmNDky74nxEkN_W9HzyHOUkvIiSOv_80GIyN"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=92bb9b8e7c783b41';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\/bdqxjjuglf\/?__cf_chl_rt_tk=s2_3ZyBWdA7sizCkS2ZvJ8CHcaSJIEUsq5LYFPrq7og-1743882974-1.0.1.1-TjbRgiogAPLxdK2xp3uHVB8yRvV2cFwClA8H54ZYlUo" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>
Copyright © 2002-9 Sam Ruby, Mark Pilgrim, Joseph Walton, and Phil Ringnalda