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: '93d990b0ab9128c8',cH: 'kronxBBExYDIBO2W1Ggvzz_9HRiTMKCH38EZD5rTVcU-1746881456-1.2.1.1-lLP2G.kaN02M3R9AZPTuvlyK6ZxteIBI7PiFRTNUP04eCO.tCY1WWQBpWUrP826F',cUPMDTk: "\/u\/jjxomihqyf\/?__cf_chl_tk=lEaI2lnTeo_xsAPqBEfH4xLONQJWl2eJr61wigyZcSs-1746881456-1.0.1.1-7_Ut6fTozJFXi8.D4bRTFoW0tghurPylD4esLjh.ToY",cFPWv: 'b',cITimeS: '1746881456',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/u\/jjxomihqyf\/?__cf_chl_f_tk=lEaI2lnTeo_xsAPqBEfH4xLONQJWl2eJr61wigyZcSs-1746881456-1.0.1.1-7_Ut6fTozJFXi8.D4bRTFoW0tghurPylD4esLjh.ToY",md: "W0OCD6Lig6w8ktgzyN3JXS9kATy50wOKRgBQw84rsBQ-1746881456-1.2.1.1-3tJhkjY0sSwtoPCakMQ_7k7G9sMeuev0EFZ4U6i8fgdTGfEW7DjGakVEQGqPE_NiQ8tVgjn9Eex3H.F77mPivxzJ3QrzoQ0U63egnbsiuRdTe.Wz6TYJzWtvmL5.VzMZkN7o1JO5AURrEzszspQtUjDQl4hZ0p_M.43po1gqCP8wvds5MDBGuI.9PM9YbX4QK1jIXZ7Ur60GgYbmCByx7vXAfX2w5mbVDkO75iWbM0rBppk8ch5CQvoJh3irH8tG25qDcERXIEsyFcDBrDibMdVoYOWv4tB.1yMFfiCwF9w0szQdy5UWcxKnFP.Ijt_Q1hsWzOlyo6FT4yOVBHM1qoaBqpfMw3Qw8Qkts4vo54OONQeFpav3cej53aoOouZOI0nckH3y2ps.f3KQlSDxpmrTgZbyCMZHl5ebfR5HJpki9PnTEp4GzjDerALsOCnORm8hIFHzc.RxFhmj5fAMFH.ky5UGKAQUOzp2XT9mCnnMP0qPNThyQ__mTiGQA1UIluBPiTwxU8JpcsMqMpqeYaTj_j_ggANStLg3xOeiQ6RTlGLUg_3oLnodl1IV6l4RQmeZ3V3MG.GK7ilNRHjHqCFml4Lvs0Z4QRixvTsVhqgc7QVUsrOpzJhNTdDaPMXER6dv6AZhSbzgcmtziPCa3PDbCCd9s9dyJhUIFHHlh7jV2w6mVwszqauevxFJpDDfvFRnuxLAprxc2Wtqgv_pux3kAEED3LNxy3oBf35FySJJHmixLQ_gfNOUcRTC2MNeHqu9DCKt55qkQSoVn2N6EVgC8YEjVxj818OtTKFwJG09CG3KDERVj9iu4HWEfcfYIoaRkObx2paYxfTERPl12mi66Cxx2cnCrHfpJAI3ghzRo8J2Pdtpos6XoARf9hRjR0b40g1e2U24AEGFutrfQUKWteKEo6lit_rssKsrG5E",mdrd: "cL4jIEe1o6mXGM8KRREEdF1dU6C9tuwSGVwdf5MyUQk-1746881456-1.2.1.1-ZJ0tk66wU6tah16cXz2hvugLWa4EnOzhQ8IcZH0RbH.oruSpgKdePm.HzIpBcGTNu_v_ApSmUMiXXZbMif09qJa0RnjCn_70OfgMksZPK.slbvfhlqLqqW0n8yovh5yfPa5ih0Y7rYqG3F8WTqnM8oZ6l9VxM2MA.8XVLCeHuvqrc93b9uGHUrub.DkaI1zjey2KQUGV27UTKF3Ek6EmcF5bdUJxWXP6Re9Ldmxd3hSOJRK6UcKL3UCnXRAXG4jtUpgccdBExUAjPlu7Em6hcwSo2CPMHDjAlQKJ2WXuqoBjZ6Fub1KD8W0IDF_XizPQh8kSunsEgFvb2nnOGNoff5VxJIG_ad0.VvUyh0nrHqyEvd3Yx7Va2p35CkhpSWvHalJ9EPn5.b_1X4_rp4CwbfBaPbtCMPF39W_X03KjLDCLBpyutXmRa6vVx9dYhQuJ2X86WeMEtpDBTfLxawCyP8HV.NEyNnpaqYrbXiCYv8zUFjROBOjZdIiUTlyIdSjCzkqOEMj_z49h4xhipOh9tX95usWehSbbjeiSOZSW6j5pIj5DyAoigWD9_0WXivSzA_1URfB59uqBIo4Eyfq7pR6y0z5LyKBAZCXMKAI6pZEVMaaZ2A4rZOzB_o.GKclM.N.uwPrYRVKMkY4WVrfEvZLWkrMiJADyn.Mxqq2hSoD_SkSARfucYkg4AuMrLm0OBF01N0ZLi7.z7JaAehM5AHjJVQDnav6M3Dm1PQbg6hoLIoQKP4O8UAIAjG9sF6xH8jjG5XKJ3Jqfx2oDKST2jxFnV1HGO86yY4gzZNLha3vYxezxC_p30nkUEQ3raJV0DAkIipvMyXZKk1MdJx2rZM17myuYtpVnTLtAs9XXpcEIxgX_ZI2gaxn.GBvR6VvaSrTVfnTraUbTUtmNFHkNMR77d08kAwANzlyX2LAbK0DiNh.xhYDumt7sfe52IdpFbiD7jEuGxHhlMbLsb4q6GvA1.hSPzMWjncg3GwKIy7wHQGTlpmTyQ3tTMzMljXeu6mkJX71V84Tc4LRjHxcVMJJqa0M_q_Bxh0DoFCZ.cg45LXJGsVJApY9LtmMswjB26Tcht9lpXKwhVGQftmRHy_4p06OZaor1Or28hauk8G6xZ0xGG.yvBiwYpYwm.txhMea2..yKPxFtvHHpuk4dCWHU89HkC_lTzcN.eHP2jokMNpR0nBAPqfqTeP4CKAQAL5aDzqQIQtrjFvcrpCTOjaavdoXHBxAVLOOkLHIgEaEyyvaXmHTlf89fM_9MnRcQTkPEIZhPgxJA4NM9ecYBQ97G2Xgh7pzdnhhLDoIMVYa_4Cdt2_9XVrQDSzCIJ1hN5CsVzHGXJ9BXm539u_lbfvuL90vyAF1t.u0aHhJlGbRbHa_22wx0c1pBY_M39HwIa26y_NsaVa38Bas55ZlB8.brerrtusedMB7j1hbxky.pF9RaCsAJXyBJw45De9rkKB7pyFy0RStbADEI.vZrvlUwp9zAPCc2W1JQSfSWAsLUQeP66QQB9ims9hCV5tlByHAUHr9kF.5XBaRhuvENK_OvLqKFk5R_sGjR5ULoxi9j2Wz_ELJRcUKT9cVbJrIslfgSUwwtRLMJJll3yedNrkVz3IXm7qZOQIcxdGMyIMo9J_HTAFll_9cLrpJU_3gpQDk08hL5HkXJ6M7cuuMDrsqi9ezoKYlFE.4XMOg02nPdchPPNRgDTFIrmcoJc2k7P8Vu_1zXn3pmTrrJMVjYS3BByMK4Z10ybwJCGT0WUyL7J1U33n_9pCucRjft1WkDd__kgnL.jy9m_BfzryNRyhmIHxohRiTG8PjZ2rtITkDdOO1fRaNbv5vfPzFZaj5veUPrGiiqZXlRjI3bAYvOKw"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=93d990b0ab9128c8';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\/jjxomihqyf\/?__cf_chl_rt_tk=lEaI2lnTeo_xsAPqBEfH4xLONQJWl2eJr61wigyZcSs-1746881456-1.0.1.1-7_Ut6fTozJFXi8.D4bRTFoW0tghurPylD4esLjh.ToY" + 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