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: '93feb8816c30a5f2',cH: 'Q5p8arx07z5botUxkm9V0ZfMbakKFjdAXyz75NMLtYw-1747271060-1.2.1.1-hyKe5hgvaD3YUnPhs7ffQ1cFE6k66LIJnFyh7ciLJih.lMVCgnIV04wRdXbhdwVG',cUPMDTk: "\/u\/nyhorxdsuln\/?__cf_chl_tk=Otyi1LuoabdsZfWBYJIMBtWFd8u4aTTGOgsHDB9SBrY-1747271060-1.0.1.1-9Z7R_WcoF.b1Az166xuJm_4FX.iWKolRlTvHgvAaxrA",cFPWv: 'g',cITimeS: '1747271060',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/u\/nyhorxdsuln\/?__cf_chl_f_tk=Otyi1LuoabdsZfWBYJIMBtWFd8u4aTTGOgsHDB9SBrY-1747271060-1.0.1.1-9Z7R_WcoF.b1Az166xuJm_4FX.iWKolRlTvHgvAaxrA",md: "t7Fwy90nvHad2LoGGfrVvwXtMSqLFU9rcwyxC8RtYxA-1747271060-1.2.1.1-HMbx9s0yVf0fc__xS3GoY3WXaFJikVJKlCteUyzl4oZbN14mlYruYubZhxaWe2wcUXW7jkBzZ6HCgx4HHng0zhmb6hwrfP1Vmf.zAtH_a4CfZ.kXY0hc0JB68BbavQqEdePrElrFPIwJQs0gD3VYR_lQA21oCZyoOrfSM017AQoHAcrTZ97JSHG6uAbLUk.rMAyRYm6grf1OSy2aqf4fLnyKCANrduszRRwUHVUnEJux0.tyWLVFX6xkJYPCnrAMN4pSCRr4KHBs_Cd_gQar7H8iCxJaiD2BrLD9OCmlHWch6UYT8xpNFPeLxoXtXzWBVfg3H26hk.4QhiT27H7yp5WA0K1Q4lRUaSEN0K9ArKK5MAlge1oKGGIatQ.HqbiustyNZB5lNv.OVTdm0q4Jkwnyxd8WAFIKGQuh0xpv0Z2H4i.2U7n1GDhmDD0jSfpDtOecIX16eWBJg3F3PTmlbABZvpytECSK1AglOlMIJ9fkIb5rMOCGOk7D_omyPjY7CQB9_KSHSyUw3lLkmUpSxAeLYY6EwKqqRCJDD7x_EPMIdJjtA42PcpPg5sm8YkCgSlWNXiAnY26aHN5xvijOCBePssKxsLPsLunWZpFAhMzW8E.cfMHDeP5hLeGGt_tk20d9CF7L7D2rF5Pw5z7rO1GQJ8laS.0d2s9vMhdnc1R6OLWu4c3x9SN0wWutW6AqM0UcU981nJG91I1TQmzq3ZcXMx5_T6pj_2IJA_yiPOcUCGQN4_fZUfT04CG2W7ww5WH_mDpmjc3D1wn0C2hmHwCTRRxseLjvxDdLqgQvD1yrQ24eG0qhPYc74prq1Mvdu9_WGMe2EP6fjkVv1lnAFWTNh.0HKmaGDXL2ZDgPsPOwu97O.pMtj02MrUS7utdp5wouPswqwHK5xCVhOraIwBGOYKeo4dl1LIV9FWQgOLA",mdrd: "51xdg0zn8e_iGLMKBC8KirIL_7QqGOEaiE08Tgt.9ug-1747271060-1.2.1.1-iBtJvkDlgHD.RhIlHPcL_pWVwOkXTHeGzm4Cgx8ar2gdkkbLi1IUercTmssRfxgaWpT5fc5jso.UuU2F_sQkXoZCH1W0SBUdBFpQwbxNNV3kPLMyT_5oR1WBX2UjsfuzmYZMN39cpOUFVqUq_YMOqMF3H0jYAUyPMfkQthMbh7ZFj7Nmi0A1q_.fZ9IoIBhdtRMTJZJry8NlS7vQx8j0v5WyPFI89MkjIm_OGCNHNjIP7MhSf9n5gn38EHICWmNl0Gi7wYzOPGQmloDlARc9oIQ3EwO.l_tX2i6wMyI59fF18i47pe5x7HuIfnfmkguyAo8d.k8xZfvLD408K41KTKh3DUk701IZRS5bfs8twjg4Feikfb5JUnoy1CkemBNIqnJxPMzdZ6IQErrumr2SHFWSwBW8c89ByRrsK6dPWDIrTsRHUWrI9B1bjhIucwoHkHKtPZo7F0SdxLRYwb.TL3V8T9hffaQknXm5WeaS_MI5i4cXPo2BuJHtwK4rhazpcgBRJq2PA1TBGoBerwRCI6Dtn9bCEYg52ScoevKBEQs1MVlyRTsS1MKpvZtnGHAp1W5_Lh.O1O33Ju5OoxYi8ZOWb8T9o_x53TRhngyYOjioWjsECL0FqtT5KdElJTFyP0AWywsRNE66TTVELQP5SyFOI59VEXIDC7AFlhi.y7V3e.KdOFm1i3mosdb7db6phqJ27R05qAgMpswsRws3S9ZQNFt.81e.y0cw4Fj7.aNiwaoYj.1u9DIiK8FH2u.4G3lIG8JlsF8naWXMQVMzB69IVLV1obRL9ocBVSZauTWoDwE9nBILtY6NJ1VbSvK5k.Iv4.MOMyVujUbEeQvKIg1XJOYCZFNTNgIAK3yWnyfHcdQV7SCuIY2Zoc53lDhFIWg0ya0yfK4Og9WffSYH0Du1RndHX8dYM71YBhPcXOgAljYLh_FfPyOTNqstbV3Kq.NjD_.tKDK7GGzXXxxOjuDAtPEt4pQYZ1BL4RI8i7Rg7obHsjEyFry0POq8SC1zlTYxXJ4ps8lbMWiSwC1g0YgWw0.AFXfzWBtM0FGHd6MGBSNtZ5HBxQa7sqmKBBevx1rIkCAVj3tQLPpjZ5IMQdstilYz0um6mDeulVTi5_nUblv_Wn8rr5zsVJS49CsbEgMdwThG47mrlhvWdWr9vKlJuzS_gUUMXAwb7BKwVsoe0PVzhvd5y0tCxbmpCOt._AtGkNCwMZnyGWhY3NnEWcwUHddjM0Ky5yG.8lgC1AzkPiAr8q9VgCzJ8kxguOiZgKLNGSVfERwbWQhyXeiKPmn5oUpLHZ6tMnxAI2gN8CW.MCz5S2fQiRFx1QE7DAMAlo.sjnv2zUoHcB45UbaIl3N3y1ElAcS.8o4zEVzNTFBCmIc9HyY3_QvUgZKULDn2pkdcRU0Kn5Y2y_Q5mQZP.vkMwgw_t3l4rhJ5cqyacXt9JPOHQpYbhEzRKE1z8t.mSI4ESURUkn5ErDREWUYyQLA4Q10AXnEVUu9VgzQeVYIDBqO5IKYDxEpg3yFjP9CMLV.H2bqncKNb1qPqV3lx73w6mTA6Z69GupmqsXf_lUYrxhom_n0bPAEoc9i1mDAlQJ0d8l3i1MopzUc_jxm777IbD9fRpsyEN4iIVg4J.nntVHkrPPrq8p182KMjFekMzwxTIIsyDqJ74hXxmfMxHtSsWhPSPn9CLn6gUH_yRxkAODmUJOwSsS1EiI41AVE4C4jGjE3FbuMEHJXDvGJPKmpXSV8cZgH61TXn8eHi4F7HD5x4qH9dQRMRSlM58h8ruMV5UAjWiiKPYRxTLWEhtXbHCULsZO7xeXv1ieUn7NemeCdF1Xb_UN1iYWIw6z.a"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=93feb8816c30a5f2';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\/nyhorxdsuln\/?__cf_chl_rt_tk=Otyi1LuoabdsZfWBYJIMBtWFd8u4aTTGOgsHDB9SBrY-1747271060-1.0.1.1-9Z7R_WcoF.b1Az166xuJm_4FX.iWKolRlTvHgvAaxrA" + 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
