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/jrztcapcfqw/

  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="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: '93ad5db598562429',cH: 'G_QG4GWoV7dvmfIhSABBiyWYUJleu6hkJZadPddUtIw-1746417995-1.2.1.1-MSELZo8K.fECP61UYj00wEteSzCPBwvUXlidvAGbPD93y6YVE4SSE1ATH1zDi3AL',cUPMDTk: "\/u\/jrztcapcfqw\/?__cf_chl_tk=WrOBMRO1IjT3.Lhl7Io3UiT0.mg8uB2W0ek8PObVhsU-1746417995-1.0.1.1-JJ2cAG6EbTurc4XvIux_ij0FM_xaaX28Y3vcrx3x8DQ",cFPWv: 'g',cITimeS: '1746417995',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "unsupported_browser_beacon",fa: "\/u\/jrztcapcfqw\/?__cf_chl_f_tk=WrOBMRO1IjT3.Lhl7Io3UiT0.mg8uB2W0ek8PObVhsU-1746417995-1.0.1.1-JJ2cAG6EbTurc4XvIux_ij0FM_xaaX28Y3vcrx3x8DQ",md: "mZVq1arQuxv5.yY5g4QpVW9zQ_Fa5ie5J1EFGpRi7Pc-1746417995-1.2.1.1-zkO30bCZDdVuTgsjkrez9.0pRlVQUi9PPUUYLmikN9AVHFg.8LLuU5yq06veowB1smYJDXU7ILckNOtZIog0HIqt20HMHy7fCDKcyQcZqZkhHjuwCHw9Bu89EjIbCSwQJifVNYQ69NJr3tR_3xptIrwCQfKr2EaeEr5gYhQQERoHQhMKtHIdmdlZ4QopyNA1R2HQWr64nq0v_TuvklVbcbfy_5VztB4gC65WylC5V_AJZygwiD3fuji1aSpvNqoLL9mCsBsv5wOS6D7GH2ksD.Y19pvb.IZgcNXSmAb29zFgSHlr24DWb0SeRGKnSc38edsWmrfCRpmPpaCLASG5wBRIetmqhIX3Yi2UbNxGiSDDLNhZ8vOOHN0WUNId2fnINMAsePESa7dnzd15G1P0rSkN7c7qLD46Enw8dUFUH4q0FRfHFZI3kc0kX.KEoUKpSIB35jzczja8gX0JBBjGzBpsCU47pkzDs_wLCv0X3aYEZwWg6zFQtg2bIgz1m8yZPQRf9lpLTsQqdMrl_TqU8lySUesy9y9vAwpjFXDoiQLKcB0JLjSxBQFycT4spvcxxVjZH3GLUVebez0TsU_E5bvfN3xvXxwTcJUBzQOeug.MYIhh65Z7L6wRW_Z1oWNb4lV.vqUK.Yk1pri_cB8kLvAdBhMQb4nLbKko0Buu0KE9edLSJyPBm6.0Rkpn_5UEIEJlyvJ46fLGosjwRyaKZhTS9TURZQ7ZOLujzCzCKdh0xL6LEW.bz58Jw54IfwWOgp7gmw0pEbtIPzuhGHkDHCU1Rx2TCkeRJHWze53590lAlkWftI4.5GC7q2jS8umoeajx0kXoeKzQHymvQXU5c6JrkgEvyGse64PFcYAlMTUW0pibpSUB5Rk1k6wDbmD2W77E2Tvsn_KWqHjtRLf1PkVZ9CY2aWeflCPBw1fPTlppcPRGHg3zm3S_QMK8MMziq36sHdLw_FHBxIAiB7GZpFV6gQZI5ZwVOwMrnjCZgKIMIpVb83YGN8PXxFoj74RB",mdrd: "nLdz8Lbr_jE2cTn.sYgGuv6CjFhRFgYgThV6CiUjSkA-1746417995-1.2.1.1-KSYbn50aZXhYS91MU.NbZnJCAZSDo1RGxl1.GsoqFTmmEoOejmUltsAQpjj1Iz2spo6CXNqJvRii7KRFLvmhgS1PZzMwYrQH9wBepWUM32uHM6SVAmPYHxtahG8Hk9O8WU7FCE.YX_PvEChVsZ_UMz_gPdTc9ZFfW1tzzD4WDYFJcBGuYYuuor2Q7Zyiv._UxKOIJGj.lcVx1gbJDZCvaAhQEuGa5wOq9TFbsol.YzVNom9Md2Jg7inUm3Gwhy6P73CLuQBOSIKlEGkKgxVUDJzwBjYSE0Q.16Pdh1aErJnhI0svbE5FVdKDTxsKEe_7VS4bPtrSZb2DExh1p9BPh9aG_CLZ2GJDBFvJYA0lcfJq.LvstLqH9sTSN8waAK0o2ZujwC0uBwxOyaj71zXPFbzD0HDy76LrWbdS3mlmKSEnR_1KUytLPFJjirHy0NBpB_FRsrZZUBCaHl5hsvHWTE_4ATAizBYKltaYPVkZk3xL5T2EpwV0u789vxezqW59ls0kj61qzmHoWLd0N2b4qUevCqRVM.nq9_imVpmjG6isq03IbxjQhsEsaX4oNBe7HvDeKwNGmhQ8EIll1Y54EINwv..R_YMGai7GyJpr2qErX5_ezVFm2x8p4xCOoHrNeAp_RmvuKSqItnoEGrbqmviE3ojsNa9TgvK8wWgo1PXZP69ZnPT6GOyugN.MUdk8QltkqEvDjHJEkqWuB8F.XLPv_jEQqQqjS.BOV6q9SkHmth3Gd7k15dmys_6nrV0R.EZ4Hl2xO.FrZGzqz6Z__EfoY0fYFdiYcHI5dQK7IMmmSeEnUFfyWp.bS6iERa9IthXvOd6YqtJBSbFQRO0BzMOh16UAry46TSflO74Kv6ObJq33J3qEzbkfuhTG3mJXPY6EEflDSMcehf8LUxCzKkuYheEZWGq4oL9frO3cs35IrQcNTSDyYcyTvpLeZiwzg9hiWi4WMkhOcoHweCBEoOzmpeNyVNI.1cOMVTSxeE63disdCh858y1dQHmRqSoQP0.tuFo8Nj6DvdId9hbKduEKr6vYYX2Hcun9kCJGK5I9CIAgvDqDFAdJBwPIZkF39EWD9eyJTwvYvcy_y2gev8B5f62UWYdHOzyPMYKAbLSzhtCLFTMIa5_b7ShgZSV6n7ePe8vKmRfyYFTrranx9325cgko84H2tRTnYUo1gL7f07S3pWxcYIuACPytDmnw.qFShLh3j1KRN5ZWLVvwjS._Ap8HbtgCj3IFRe.m7PAynCZlto4jD7QlGV9mYYN4ejTn6NitUReTf1yTZ70YaKzXA32n01KlK9.9Ol5DW8BoF3fj_bENnsvQYU2unhcyhJii4ejDcjPMfIdF_OE2pIsdwi7pxG1qLOFRN18jRIpIEnF.FyATA8VIW.3h5XWTM7XMiHWCyvbqiCd.LGWGXOZ1Vgmb_u_bsudsN.RSuiZeswBS1ZxdhMSsT49LirNVXdpLrRtUWAOC57G_ZeRGVCRkSdNtDMjFC19FkmvgqKRkZqsQxjqVoqXrw3XXkXddmD1QhAL9krktd3y62UTKpi6QHGu_QvB4UHUhHEBK3wjMufNC7MLQ2GUm8qDz1WN7M0JpetNLwfxuwza54CQIEdiBXfsPzaUbWo70sNpl3W.oOHgN.Ws_nAcZuIecNQCQ0iVtlCfRY2xKB5J.mHKETphoCBeOUJ3SSg29dr.qP.b4hkcDSaDYbTG64iLUcDK1ntsS3ywI8yf0mUEcxKwUZd38_jxWuR9X41vx2Z0hvEff72hG6Qe9_Vph97KHWg7pQEdlNwAI5S38lCsi51sm4jRe_9oENVYW1PCZ33GRu1Sl0TJe63c39yd2ONE3_Hjk"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=93ad5db598562429';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\/jrztcapcfqw\/?__cf_chl_rt_tk=WrOBMRO1IjT3.Lhl7Io3UiT0.mg8uB2W0ek8PObVhsU-1746417995-1.0.1.1-JJ2cAG6EbTurc4XvIux_ij0FM_xaaX28Y3vcrx3x8DQ" + 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