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: '93da51635a3f202e',cH: 'xo39Px2Fksvn9fBWTyZPWbzYOt7RKaJY95Kchc50tQw-1746889349-1.2.1.1-q3t97QykUxOWHVivHitiZ.aj9Nms0CvYVtKg0D5qWHUTWZe5VwUR3UZGT3pgliTi',cUPMDTk: "\/u\/xretbeottk\/?__cf_chl_tk=iDuB7P2AQsPXRpg.SfgZexQZAzRFacie0pXhYxZ1hBg-1746889349-1.0.1.1-DYPjkJAb.m.bLFWNAzuHiepdGpJu5HPhvgRSQtgxXoM",cFPWv: 'b',cITimeS: '1746889349',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/u\/xretbeottk\/?__cf_chl_f_tk=iDuB7P2AQsPXRpg.SfgZexQZAzRFacie0pXhYxZ1hBg-1746889349-1.0.1.1-DYPjkJAb.m.bLFWNAzuHiepdGpJu5HPhvgRSQtgxXoM",md: "MJ1PwnMUSy8XnlwgXrnze.uzlxX3u5WEVTYqB6NOpCk-1746889349-1.2.1.1-UJf6DYtRID6v5qmJxJostJrOnBUpZp_Qd0FFpBpOCrOP27vgV17ZVdR3BogCBdG.lfraBbZu9evZyHvYaBlBzm9z2YZ6Ad0fjXgXaR3Z69blWWiCaXKePZuWZ2YkQgnyxCMD6LT4D3tzBr7MPBgaeynBVgZrhNr1q4q0hkCnjDSWlakxspZ5LZt.81lpDkuN_0R24Z7h4Ob_f8JkOI.K254mgFZmyv8iIX47cCIbm2PLrTabYZwD_L_BjbMW_WTcROsl9XVdD5VoMTjizCVB1fQCkr8vjeUjGTsCYm0.x6SRAvrE.YHLUREHUX0PIEjdkV8Ofoyzxx7vpg_Y7Qx5hWV_HXvwSgymUChzenuS9FKnN7bKrY5oBI.3sHe06cvz5XKSJnfEiA0fxz5e.roycCA9NHqn_n_WP4Usa3Fx6YYloLe_W4IA8JuEXIF.7uCybdWTLtjc6yJVqPWseSiI6.QJKH5U38xudQpUKWKk4YyZj661_6pk_Ud2NZ.gljRTB05Yih0QfT9M7qW5XW7hJGRk6s8hH4yL.loYMvDIqLIP021V8K9tm8idCi5k7gyJLutbsqvCCyvTD.XRpLUH2je8RLRAJDGvBssb4cKHPhbB7.sg0v1a.bF5AdfZbI4olJTh.06oBKlYLvl2E4xkqxqfaFkd4eAyyC..5IE5CViEG9QdI7XL92Okh_KVC.puBDe_b5AVb_pm_OFQgB0XGS14zzEXlmwE.ATplJ98EBkgmnEj7gtypUWvYj.QmoYuDofIJ2ePW5Nu8t7oF33f91jJ2GonrizDHyos0p1.EhZMj2PdcZbeE6DpqqBpeep612m8ZQHtZmtxwcNfbgk4Jt0CbnBCdvxF_f8D3WE_OgjxsfUWXxOBJroivXde3.D3Zwtvj3wEOtW5YQEuPLfC.m4y3QgPqdU_VuyeKSp3vL0",mdrd: "ZUgNE2PODwTP62SpHHuey1QKtL0VhcDjXB6haYs8l2Y-1746889349-1.2.1.1-is7kWB7ijOhLSlfBRFKuqPTyP0USxwj7IrUAUyDqtJJKKE8rfxpnDy7FhqD5A7QG5Q9veKls76Ka0Y2qGXj8PP_.UpPJJq_5ydB0OEQiCuTc2oznufP2vLhAJcPoWe2HzjxSx7OhmLcuvwHkT0kPPxj77srLot.OXuynuDaZmqldjykh2yqhDIFOo28DYeI1KBNod3YJpPEij.w1XTPfNpCUPZiFYy4IUIaFujJy_aL4qdbm6ZR_3pilSckkZ2Ec88NDlN2HBnsoar6Wayi.10eRfTAoVPBUQ414czNbbdx5XellECRKi5RUGPkLk.w908MKuYZupjM5U8Y.SM55uq94F4NXx7mHT4uj43DvcIh4ePK_bq1u1BufziPAEx6nJp7l5omWwihUAeD65ExqqpZ8v.VURLbF3zE9sbJ1TT77U7hhSnmhAapaBcZWcJG6Al1SS3V16kuSARQ8vpSQPwwUQsOWnngF53UAb6UIUb7keKovXiV_hwTSUwY4U.bfa2oR23aN1PagqHvlTJ1lQsCuQVpgKwlRCoRpICf8misjPMVhnawEDmafnNmZSYX6cR_H0ZokLzWStvtuUEtLg2amvBf31t4I8F2oXogrsjEWWSn6m6KQkRMrMG.tgkKX.egtQfUP5AsAgaCkND4..MofQzTLEbx33cMudCPLV_quLgfkat_2g282VffwhordUblyYEunVlnAl05uejs682MLqSr8CJ851P6l6.T4W8viahdMMOVJYTRzOZxADFSQC_Ki7O.whUetMPZGlt2JClFaOnBoOvnGr9SI4GnsU0uAOKzy2JM3jc2_7HrgZyDTK1i.9H0JGeDAqA.1mMKR5UNOuY85q__xbKK_dW1cdfUN.JS23ZrbyllVARIXGH6dh3r3hauDiHB30SbdiMMKAUIP2bSuQ9VM5p0vK7Pz_PeOqM4AfZ3Gv0xy.6RgGCOawfMYofOVtJvTg5QIajOAuSJ8spGZez9i5.ekJJAyaiIWHQyNO1FAmPCBM0KgNuSoLDa3ZvZ8JEmGyWuQAtvN9mLgF0XQeCksrPYYYiP9JCb0vxJvyS5_ZgTgeu0Qy4X7R_JMTpVkJbSkA2DsWmr.1gDyH0sshgiJ.cTZoZOoDEDriyAV7TfkyeWcUq9mGZqK4Cv9wE9fUyPleihzkKr5bOyl_oHNLJXijYgUoCvrrJ4EG_zGcQkOAgx8k09yRAJRmOy1YTBXnyd8JJ7xMJ6pY8qWaZcOdyB.fedIC.FqwdYGcbWr__7xtSw3oDynUQ6x14D2C8HmINc1V6UvVTDOqvmDrnJAmvivpn5i_Txt5sYdjm0hpHN3NqguXehPG99WsH_5w1l6.xTclOQsjlVTQk93ZXd2r7JREXtuumtBQb5AFSu1q02RwX6xcd0qG7eTay5XSK6FiXHFCWKfTsXcwlH5k.OqLpq0WgWP9iO22qbWVKN7kx7ns6Hwh98FU3B.sAVI2d8OumAyBLTr35gYSUXpJCku4HWxjS5cGGTkj3qoBtQ4cG_1BdT0aRtKo9oT9t3Cm6ovBMozr2QIRaIdKHjO09IyA3e0cDMAi7bPaldxXKXgZIOaYRRM4qz1DQnSra.DfgT9VLLjYzxD5tRaxqSHZ4qXaJ7uINrSlhj2AX39CDH1Rh8sg.SCLYFYGsW5JRp4NtZ1f1ZacC1_ixpW07FaHFYYGvY0ftW4AV28STNUDNKse2II_1o0RKrrpPV4K0W_OTOZVQDwkFtN36E8zMd5JQHjUfXB7p7xAYjdNLs.sGExJm6mIW78FCQRmpzavm771JNfgBUQdnyBaQT6d_jfI2RgBSkId_xEMw001sZBRiwP8ePmuTD5esDFlZzBeq_D9KFdOR1xYqbkYTX1Lw"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=93da51635a3f202e';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\/xretbeottk\/?__cf_chl_rt_tk=iDuB7P2AQsPXRpg.SfgZexQZAzRFacie0pXhYxZ1hBg-1746889349-1.0.1.1-DYPjkJAb.m.bLFWNAzuHiepdGpJu5HPhvgRSQtgxXoM" + 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
