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: '93da52e229e2e5e5',cH: '1rTH_sLxo8FoPFqZt14zHWng8FnsKhqtpv3lsGGpyG8-1746889410-1.2.1.1-NMERYm5a.qnV3MBxc9bBHZytK4HH7XnCji2SIg2_G9LzrmP4uqVMhmROd4tBBUWc',cUPMDTk: "\/u\/gxecwstetd\/?__cf_chl_tk=nsWgwL.l.v4sc2JpIH4YHf6Ds6qB2qH_mQxEln3kWX4-1746889410-1.0.1.1-i2YBGQo_fcOJecu1BnzXdetXIlyqEh2BMdHt3fioRz8",cFPWv: 'b',cITimeS: '1746889410',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/u\/gxecwstetd\/?__cf_chl_f_tk=nsWgwL.l.v4sc2JpIH4YHf6Ds6qB2qH_mQxEln3kWX4-1746889410-1.0.1.1-i2YBGQo_fcOJecu1BnzXdetXIlyqEh2BMdHt3fioRz8",md: ".GhPrCCSzJcvb9CddA9B5uMOy8OwV_eDMUq_NOn.Z0g-1746889410-1.2.1.1-4_3.8J4RKLBNbaN.rrAftz8HO24AfRqqU3F4K01vjgWtEXAnJsfBA.Rw3ZDIPi2sl5A6LB4JTjBZuzzir78g9YpyC4iGSEz66505CQB3_nkPgmPljJohEzu34pE1jUyx2JeQvdHXYbVlbKjIyj7p0QPZq0Fx5VVEklFCX.wz0_YfQnLuwjhBE8FgKYFE1l9W7_Ti3bgmyOcR9e3wgajuMltU6OAicFyuhmaM4u2Auu318PwZvpQ_B7m6UsXBKBsp0i_Wx2escySK4fFXrjZhNWr_5EfGxHFklLm4w34X51kM1EH6dhhrTfH5f.8erjGEwu7W6swyrWp_1sqHMDulr9eKPeK8WSqDwp4QVOZRgsHrr5Q4hfw_JNlDR.1WogVaI_QjEhhIa3618.s7pSl5WKl0qaMAisaTu4i9_4eiIvJQ_m7xAjUpQz9NWwHbrSpaF5MH0I3AmZz5UsnzL5uW8Kdqm05rKfly5E4_cGxHTOTxt6i9.lliPnOZHjmOdUaA0JWFwNAvg9og6Cj9CPuL_HcGjb_1hMAxZDsdfh_7udTSSawqJgD34TrdbmTPKyOqQUVts_R8guUNE.J6nDuQ9z_8c2aJftueqoM_XhpthSB_VHlJgxnj3Huc97uASnSpzn8NPaJ9HWYHHv9RBpH6tikDdGsWUw9OSI3P5URU28GLnw2Hwnb__RDvHqzq0LkLdFkkmctpJccWKSErT21wAzjEOViX0awXuozKtTlgUL6ViVyk3Poib5Lo6OnzGl6s6JXL5wsr9bKal3OdjmqzsJmqpw9D5YRJDvHgRsLwu8EUXe559zaey2Yz3rzsuuq8k4loPIAuAEFRTKxHywBJDv5FK.5unzdonx1bXEwQNc84AK5iVts3PyajBozNMFslVNU6h.QBHxii7BjyjfrqP14tXb7AEdAfRz46j_IdmEk",mdrd: "p24DypYhJfeuO6Pxvkn8yXIu4Ng9ssirHT2E5qcth5g-1746889410-1.2.1.1-5.5VCK2E8rehENEPKqf1IKbWVv6owzzZDhlVq2HW7EFIs.cyhw9VABxFnpPOvRXuN.QTmmvArX7IfYyMooKWWvULjmdBSckOh0EfnPdq4ln4XZ_IW1vZDYO5FQMLN5gL.fk4XQ3hgbEDAKEVR_bHdc6NCZkmySNKbifNEv9AxZsHcfg8kUIn0ihUakPhh4saV7UnCIpwVNE8xeotnyV_q.Takb5I5J7dXPlt2sc.1GMkTGmBCKwKVZf8Rx3PPr2C62oaSccku7HW6MtOM5T9z7_vX7NG1ol3JDwowH_RoiepKXiRl_La5B90e1jUiBVw5F8TA_dBDS7prYi6VctRl2GolLYP7M.EzsGbLjV53hqim.hvthnDXySyBQEoZK1SOUknpzzk9dug46449oCHC0sat8SmUi_DVH0_6CeBREF5Yde8vsr07nQt8tWEuFynECRW1xaKIFazb54wFZTeoHWGMozHJEbxZnm43nBoLMEGhLLtsl9xjNBEyrVn2OatKGboPpODMeui3qHcMKM9Qkq_rTAB_ye.eJSY7BQFDSzGwrfJ7IJMt4MqFgjyM34H4xc8zgtCtJ8r9hK.dpLF_63b6IwgzHZzr1AnGyPkDgFxEEo1MPtKeov2ZNgAcXZF0KR75PgvvSxhDT9yEeVJD0ykJcCZI0LFEbprjpCb1hZP8pdW8e2sneQyDNRbyewjCTgmenpRw02ybP_v5EXRTHbmU3C7H9W70iMKKDr7wSAa6gRM8c6OtjpeAyORYFo20RPLBa5qWSL86HgkLG4LopAwvHUPG2dlop2wuGdmzqXmakXC2bzys5i0Z.gJp0Y2J1x7PZavxWF9AzCVgWhkmM7a5.4A_HzPODBIua6trdS3xK95bhygSPEi6dtjdtiB2zaXSVyIJzhHLCFXlDy5mrv6Q2l0QvAEo.kp4qIGbWlb6tKr3bW9oBz4KnbE9StCr5oVHweF8XTJsDs6vG6xjPZi.oQLij3FhJgimiPJnsBhuj.KIQQZClDoBIoGzsRSnEWVMQj1r8LZLqsJ1qADsrYJPmEPa85do0ohSp9RxHgmae3.Cx3wXuyfrniJlTAwakosGE7aXV1hDT9uqurLQdppGcqRPqH1zuCw7osHqFHnPE_92NBk85iezEXq81p8ZYMhzDTFod7vmIvvbP3Gw2AoBZD1t_W9HubvhjxraZhKkkmANxNduM8qylh_.Ok3dwxa.GKQrpV.9XZ7g7ViyX6WEtAJSnfROPUMBAuWCRv.f03gqXqhgEgSAmNogr6ag4uPUAaSGqhHIQftUlt9_FBgf4f3NN7vOKQQJEQvk2lHcGy1yvL8qyEinnW7UMFQV0HoLNn7lKCSnTVjfHCJaKgweJyndGQ3rSAq7lojbHFUNrTNUEZ0DqghgyuQslmjtTfCMLrgja0eVTEs.ovxP.H_N3GBzVgamq5FVh6jaiRY.CWhxbH5.EFdU0C0IZCm2cfyhFfl..0TWgySgHXBWJDD0SUNg24hQ3oJzbwr0XHb5vmM.vwC.BkXZGv7PWkHrQ3jQ8SVKOF4B4Hdi4lguGE.hsuE8gmt7EXKqL1dY6k8E.WgE0cb6PeHg4_l3H5C.uOV_Ty9kGBRHD8kq4TS7QjNt.JYqxGgRKZR9LMh8uc3ZjvT9Q.L1MBkRfyMhZL_oaKs1eksBgeRV7OXTIaOj2vgLrYScIEK_s.B0mTbL4My7BJzdYiFFrfU6jRdMEDv7xzMQY1uBKpyOlW8KQugOxurJNnYbVWsmH3gb_vO6J.CtqNw8LjqarZ3Jjrmbs3HPDbD3hlXs0i9ixdRQqHFImH1v3mvfEqbae4_0NSm_v2a1ED03CowL5ht8WxV8T_2BWQ6omLRbLruO9o7c4eajQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=93da52e229e2e5e5';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\/gxecwstetd\/?__cf_chl_rt_tk=nsWgwL.l.v4sc2JpIH4YHf6Ds6qB2qH_mQxEln3kWX4-1746889410-1.0.1.1-i2YBGQo_fcOJecu1BnzXdetXIlyqEh2BMdHt3fioRz8" + 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
