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: '94a452e7dfdd207b',cH: 'o6iEs7PnUt5Xv95fYVedACgEAXhgZ0qSmUxK08OtWGU-1749007535-1.2.1.1-LsWLbqIw39ih6.HRegMVN3nvmdlpUjYktYzOX3m4WYyY2bLmZnamzU7fzKzbi6B_',cUPMDTk: "\/u\/mdrcizuemn\/?__cf_chl_tk=MloOwqmkdVCyMqUECLxVF3kIwFdsjTBSsqnrogfo5IQ-1749007535-1.0.1.1-dF51qQMsUVns3tR539Qm7lXzWvea0p82Rz0e9bX278k",cFPWv: 'g',cITimeS: '1749007535',cTplC: 0,cTplV: 5,cTplB: 'cf',fa: "\/u\/mdrcizuemn\/?__cf_chl_f_tk=MloOwqmkdVCyMqUECLxVF3kIwFdsjTBSsqnrogfo5IQ-1749007535-1.0.1.1-dF51qQMsUVns3tR539Qm7lXzWvea0p82Rz0e9bX278k",md: "RhOdHTep2wn440kscxF.J7W7GN4kx9NpfiQ_lyAj.lQ-1749007535-1.2.1.1-7v87q8b0VNdBgr8la42iaJe6hQYS4Jqq0C0UvKQinsnJJU_8mSUIbzHxRg9y6u96HGJ1_RhPmZTQv5upfHC6ZBwurqJgpRsvVqV5JqDojA87NZ40cJ_UGwUyc.pwA5azL5KCSa1rV1Af5yjwFlxdbUYJupDxJODeup2ly6pX4QerTZWMCUt6kVdljRv8XeCNVoX9umgBsYJlzf0NlvEk98gh6SLu8doLS5cEWOUxAEd6j.d876bd33tmaZvnZUqoGZ40nWWzPbTX6m2kYBkDurNa24lVwX2mkZVToVUy73hQSw5NEoKtQw5KL62C2ML6YJfVY4RR_PZ3Vu9vKYq5i.zi8IrXtFVZqMsqmp6323cgK7CzC4Ia7DArQIQn3uRmy8oU_JL4rQDi6eJTiMj5kdmkOvOAYRieJU8Tp_3XFtWNvrg7Fql9xWYGK5Ne2gZ2nxHZu.sw4DybNYDZyLCDyjZK.2HHNmG5K3RiWZyVEzlgyGPPndCEP5OgzhB5g8u1cIIaXwsylad3DD692mGNzdX1u1iEQerb1q0PusCSwadTAKHYlTlvb93pyxmMsUgYWLMi5WEkQKVN6h4CZGlY1hlcUqo6PaCHtNRd5xvagtUrBvqJUwvtsTbAkZr6z4402cA3y4jJKqk7Ijc8RvhpI3JeV69oOomR1M9WmlazGMIUWvBNAiqY5nBFjbFxgb6GBaBdEtpkZ3iKwD4FBiyzHCvvCNcJx_eyWAfg5KnIU5a24sEJlih12J0UFOye5pXXNiWMLbDO.mAO51NyngR.0_SuFbOxWWVAHZm0Q3IQtIro.qaIOz1D3okJSuoZRGZN5k8CbhpU6BL.dlyFTQD9aGSzDBm2RK2.P1sM.6pRtj7l.8iQWhbUPOCf6Zytgd3jXkY3mwW6lthg9SB14kfGNX7FusSbnQk5y5ypQui_tZw",mdrd: "Jpq8sS6dZDWS1Y8TYa8eAdNOm01Y9xVZ1haM5YDX2VI-1749007535-1.2.1.1-fSHPp0n8atBS.IukGBSI3BgJDdzfs8zqmZNbzFGe5KeWed.fM20oK4ETSy6WWeWyrN2zYvJSAktwsOU53J6grew9PjE97eKIcUW08oLyV.bBkKQNp9rL4G_faeBwM8XrndTN4Kw2xuRVofMky8pG16C.NOwV6LcXBDngIuSy46cekU8SqvLrjUcmD7u7HZCB6BO1ow68miS77QQWRmVVn1Zrqo5hzfBtWYQaFK2vhD2W2pXGguqCU0_Oi0IEooODZ9Z0nowWa5QbYDZhNjshaV04qVL8VVxMhl6.dwE4Hp5mx7Hsjh73dFRqT6G9hn2xTbrFKPeQC_gyAS4E9t3qRWziFFzQNXjG6.q2AaplTor62wDMWxZzQsXF5eJRVZkBNYJ4UzwKN5OM6ModD0LcJoZAS8dHmByEKdDpiHSyY.yzLx2BxKDbZCpYRtxpD0ygy.VUNND3DxihmZFF5e6ulNqgnwQ_6oKPpROO5bVkBI0YLFdTeWHsxJPRRRtne3fryj2AbIYqBMdUvqAD3IrsHZajwVa0fX8Y5DUx1T__b4Ohr0ZgnrzEBL2rjE38X7_yLRjq4jSP_hgnr.mIEJbTqpagAj9ZWv5SPoqE0aM.7HBjMDqgNb7sKQ.SB8ApQ4_7jiVG65qEM8Ekrz4qX_2ljoSjc67nCRmugvRmnRAWNz7i6P325ePWzQ4Az5gwkMjk6O_fwR9qwLWcmUbludBvsBSMQ7m3DIHke4ku7Jw7rOPJVkPi2lrbYGy6A8voXIyIHMSru9O1t2rccYHbKza.Ga.TvxNlvFf0JD1MaEjfrEzuwK1VDBJudlpbX3pB7iLQqfWK_bUTTHj46lGucvF668e51aVUyDlmwNzIs499pPU4uZfu4EQXXpej3ckS0eOKOZ_HMKfL5I1RB48FaAFgq9XU9CT53VV2lMnB2JxQZZYSHbp8P1SNY9J1USTUefwIPthB4lRElX7EkHjNySxyI.6W51MJDkG9z5R5F2uq2_peAnetRSeccxczc74JZSzlYSbBMgD6fANrel2mJIXT3E.c9_Jiz8Zkq5szkFwdHhXjSzX4CRgC0umkcZKzxClR9jTsp56enkg4KLy3A1FjaZuUau2qlKLgFa.ppHdticl99idxfShaRkE3vHbGlQqxWoB9LlDLCIiveCIfmVs8IByh14HeWX6IwQYxAmxny5hQWYV_yEuxX5BWIcQVysWa2FLgozICVDYGXRzZJJfvY6LQoLMIignzUWR_vD0O9iV4wfc7gloyjpEFWWDoSW4szXzCJw3TzUKE.gQcpEdJ0S0qspBZF8YqnCQ0WYitQbhdPfEpDVECUON3CyM_F7NhuOwSmC8HvnFEsteW4V0BZvEDq25UYbd9gGEm.KuIXj73rAI1TIVp2f7O9N7NP78rWqWzwaqlJ4ih3331Mh71_fwsHiNVCfRvG2M64ony4l.C.D4irw4TXuV.UiVAsTjVn303pToSWP6WIWlVAUkDkqdTTI3dCkYpdoVZ8fjwOMaTzcjcKuY4m9_OoI0C2ttyQSGmOmUHuYKTMZXZjhjChurBs_utLHYOnrBXCDGU6AsbY7vnNUVzuxbFS.QW5tWI9wEuM4OxKXRrxymLNmOpCLOHFr1UyGJDJhfiL0Gqj_LeyvUhRxjv0EBk0_ObazaxTkEQHuRsRBpTVBFlx67790PkXpuMZfNuyZf3_DMiX7qV04rHBCBcujUqtBEm5rtI9ClaWOUpnQNz5dHCPVQ5SoMAZcDVLqeT__pu3V_wHNW1OQ9fS6R5M0bD1zmkcw6UipyUHwOL65_XQRPb7cdJyTZY5BjeLxR1yx1tfXcHhd9FC.q15zMJq.HUerCTnsA6ZOnlWK8aotfEzAiUi2DUzg"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=94a452e7dfdd207b';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\/mdrcizuemn\/?__cf_chl_rt_tk=MloOwqmkdVCyMqUECLxVF3kIwFdsjTBSsqnrogfo5IQ-1749007535-1.0.1.1-dF51qQMsUVns3tR539Qm7lXzWvea0p82Rz0e9bX278k" + 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