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: '93ad6ee5c9ddc98c',cH: 'AhbbcsHsadgJr6..sxma2mpM58BblqEJxJjPWr8Ul44-1746418699-1.2.1.1-Z7J9wqv.rpix7pcnDNBwiLt5BQh1ARkIF0y4FVL_uxuH3ioOzRoDa0B3zK41ap1R',cUPMDTk: "\/u\/rakdztqdr\/?__cf_chl_tk=bd8xz2qV1Do5jp8.sx_7ENmWwdZbDuiNmS.vWb5YuaE-1746418699-1.0.1.1-YIOYKGfS0tv6O4oUC4Haeqcrep8.5kmtThAbOePuaUM",cFPWv: 'g',cITimeS: '1746418699',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "unsupported_browser_beacon",fa: "\/u\/rakdztqdr\/?__cf_chl_f_tk=bd8xz2qV1Do5jp8.sx_7ENmWwdZbDuiNmS.vWb5YuaE-1746418699-1.0.1.1-YIOYKGfS0tv6O4oUC4Haeqcrep8.5kmtThAbOePuaUM",md: "_7nntwxfZtM3QxKA8EVV9gjTBwfaAQ1z2EMgYtLPoVs-1746418699-1.2.1.1-FaZCbVK4we9j5zSwZgRNNQ6hx6vHjby74eSuXj0cBEEYDH_ndE.Tt3mU.0MjS7uzOqcJ0R1TEHFb9fsllEkMifLCzTtUm7bY1CpZM7JUx30rH7j1eugmzoF9c0oDWqzMWUPM8coYhmrCdyOJFvHieteotxL5lvxobMYUNJUPE8WlkKYNziUaM8taecSYgf2MfBkCG0_GE5sSKa4dnjjiqWxRWL0VLHIDaNyahgyYmZzhbCWd9JWomSRB6t25KVYx_lhaoIMU1QlZlOEYyPXo__A.dtY6FJ7jy3p6.7SSpQQl5vqHFZFkSfR0mQFCqGABeFWbfukvy.PpFRRbpB5Igd_krQn83QaqX_jKg47vU9Iv2a7CptWW.Zs74k4GJjOZyvYQb4nnpYVK9hxa5nEC3Qt_eNmFpNOI4G26.VTB2j._ADddNsJzYGozvs5EzFzN4JfGFfRWvVqGDdmCg.N.xHX3128Plctzq._0r_LBbXvvCCbooUWQkTWZ9T6Baakx6wFOgChBVJFbQL72BtVg4FZCIPTWa4bG4WdDn4KAHJd1Rm8dbGUNkePoOOd_EmcKk6ffeieC8nsT_K25wuLNmbLUUAerhDUFr_yxtVMdWmgb4undjxSGGHpofFC7Zcev3y0anvFru8_VLYYF5vh6ifLbjn_oXd6EZdH8.Wbx7cH8ZZ4C_qIduPVMIh2YzIF1oYon5vtm0tMIdWabdE5p1zQQSKY47VpPczUtouR4TBUTu_.FLyquFjkJ7RHAB5gZe9H9VK4qZUaBPJtYmMp36eQac_bRpVPt8Chvo0hZd5Fzyarov0LUxYgz94n7pGwYYCFj6GjCVj3sTiwXjEgzXT_F8WjyJF4PmpaZWvgVAfPL6yHbrTUgElMGbH_H5o8CQ7xT3DMgwOBG4wfD9ZEueM_BdBMT5kqxdfr9F9nQvtIq8_gfR7F.tVQtLA9rLbFgbcty19psXgGuzi1MO5Igpjd_g3GAAVU6ydcEJ_UyuFfcvD0p3g7m6hHiwfnKpRcp",mdrd: "rjs.jRtYPK.D3Vu8WIRfsiG8p4ZSpGi675xuXEjALVk-1746418699-1.2.1.1-7f6l8Qud_6UwRl1vxT5vOToZO3KuY2mjmrgBF4K8wB_ZeniXjQnqmhORF0RKwTOGxdkwaNNze1_XVxeBser1nYOFfTZ3GHArUdWIkVPctg_Uc.Z14UmgvpSFJKkzsnhPQ3_JJFo8jeAgQ63AXbBVQy5r.R_TaAzuUGDyyzWJZgBoVV.60DDpJzJB6y8WwhR7xjDAxam0sMighsJ41Y7CdaeCMFx8OQ6FkJUIYItcDoEd8.TPOlmKm9V2UVMoY6wLtLjQjPsTT89ZvLzWhNLpeRizuIL3EZDXkV9fbQj1YOO1AXA.PIMxYbO9HUHXq4di4e4Lm0pT_dMFWbj1jSNWh0QYEFRvUdRSVEHvPR9V6gNArVFBYsG3TX3dZj8fppd2vmJvp9pDBv5893iN3RBJH1fAlKX51RyFv0WnXZifc4MiEp32K.eFgLXLLOu6G0WF_vqKTx4kycdfdGvOBEf9mUdcvr9ah.P0Xtx.DnhOiYkjpckt703t.vI4Gp6BDZPsD2oQe6Fl0_aVorsc4DAfUF8N6sNiinn5Y4vdrHyM3jPyAOP.YY7yJACNABQj3.S9PnF4EbuQ.vTxu8kzRvcRimb10Qj27gGC_f64rAyG2Si6vxi9n.u.ZQypd1h0o1rGoX4C31dvZoCfm2CCNn9Oo8gOp6JTqMHxSPgLSdxRwhSzvt1AOPsBymmxcjD0dxRsUrC4_c_plWdbx7S0rWbRTyQEiriyX47PTuLoFbXeA9j.ytAzmhWyVV3xuNqlWA2LE7NNEgC79LsYbhXJWNh2CD_tuep8CO9m.WTR8y8NL23iRWtN0cjDawaMyQ_PsxLXXecSK2s1iZ4gIv89JCsC6uED9s9cR4TDudwLJem9pRn0jAL8DxnL3S0D0HskQVoViboPzyxPaSyy_z1giP0zM84bLG6ZLYCsFk5mnKP9xwq6JR2M06ptEouzSxJSe3wyKd7COdpNWZ1gUiUSBxAQuFiEHeYJfZJLQmxJkSGKkFGk6QDRc4CdnnF4jUPOUb8emFANSYF2.MvohyfN5NXTbT8S7aDnByY.wLFKJWS84r5av413rnqcKHo6ITUdE9xzV8.shTQqD2Fb9w9U7AVUHuVTdrxmQT87p0m1RtA.31MGidf3k5c8HSfmgevh.92H7MMnMaU_EM7qe8nC0ZUj.x6mLI_CxRReQlf9_VvVI0NDnlmBHbxqqbt5RGBBYEowizHpRh6XxGLAn8Paz.Jlp8IJ4ZO2AmuFGAO7AIA0yyCbtMvUbF.VJUPBSFXxKxx1Hyg78NZ_GZrLQHV1bqmD5BL5GXEoyt.MYvbtYhWk3.d9ClkmWQzGLQpmr.yEmeXl4bavx1pPHSOJqHQGSQrc8Q27OKqt5JCMNbN4i5oc4hAmZHZelX8.m9PEuO0qnk8wA..BDI43NcYBFFBaNdB83D_Pb_Fvey87eDLtvFOFt.KRQ2f1kdcbuOHSO7N7qtiaW62gZYeIta.un398RCC5iIDY6v4ayuvxu8CWSqPD_8rQ_HqgyiB_G.AFeYEkLekN1viCL3LfeyJEWI03ZWAKbtcCwcnfDZGFUSoKj242pMi_VciFeIvKi80V7kCkYgtCySjoc7L4l9Nb1RO.uDKLkn2AaN6WrvySlOKaJ918yp5CPoinQ6QnqDPtl8PIERhe._aafef7HW13kap4aFKWOsoV61KVcmwGGJID2P8_bG_4BUjS0CXIx3NWYP2IQqAmUtX2fcU2pFvR_nah2cicWif.7_Sp5k3NJa7wj_QDUbwwC8WXVo7vgO5uTUabUhZ2DWjzgIfmtyXme3qaDUBZmUzuhFgXzi2AiMd1cTziKTH7Z6axm8ajtIVqbKEgHt2E"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=93ad6ee5c9ddc98c';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\/rakdztqdr\/?__cf_chl_rt_tk=bd8xz2qV1Do5jp8.sx_7ENmWwdZbDuiNmS.vWb5YuaE-1746418699-1.0.1.1-YIOYKGfS0tv6O4oUC4Haeqcrep8.5kmtThAbOePuaUM" + 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
