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;padding-left:1.5rem;max-width:60rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{line-height:2.25rem;font-size:1.5rem;font-weight:500}@media (width <= 720px){.h2{line-height:1.5rem;font-size:1.25rem}}#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: '96ab3bdbbea73b4a',cH: '4SNBfTyaIPGLyK_vbubfvlDp50VXCIyksHjqbpCvskA-1754448700-1.2.1.1-YbtBIFKqcwYij3yFiCmYM_2hyQumpaSWEX7w..qXTZ9MFpztpn4j62lO_yptPwwP',cUPMDTk:"\/u\/nioufoddvtp\/?__cf_chl_tk=vJSWVVRkRXPGDihdcqK8l6d.ILUYaJnhemxPOHRfSZw-1754448700-1.0.1.1-ylHpp7956g2DmVSH8akRI0TzCqr_sRcJaBa9akiVtKE",cFPWv: 'b',cITimeS: '1754448700',cTplC:0,cTplV:5,cTplB: 'cf',fa:"\/u\/nioufoddvtp\/?__cf_chl_f_tk=vJSWVVRkRXPGDihdcqK8l6d.ILUYaJnhemxPOHRfSZw-1754448700-1.0.1.1-ylHpp7956g2DmVSH8akRI0TzCqr_sRcJaBa9akiVtKE",md: 'R6QQmMMhlUHilFbtZTZHO3xhCtushzIn0w1NrvIn7iE-1754448700-1.2.1.1-zpjVprX.MBGsLYjYkhuuPpgqNaDTsw1Cc3rgfLHQLkfCTKVzujaBcajkxsmQaCWTlBi89GC8p7rmLjLL1t_oPzn1ZT4tWQQZG.Ynx8ZPReZ1SDZ6yWhdr9gfJWDTzfeAb9V79yXPCaXBUrRqS_5jnYiX1R1Co6Cf4EXKaeIZGRFj4.TrvlcQy4qmJs_7k9fK7n7.AhAmRN.M4nsCe.lonNcNZx37cM79hqfA_Q6FRrEKN2KlBasn96OeTHqZbD4s_xcp5rIQQYWKULpU2gJm1p3k88ff6GW2rq4S8y23tLyVxVQFF.Sm.CwWbRzLJDL5Jy0oj2uQKseQN.uh1HthIhMcVtKaPxrzTw2Q8fNl0npvkROjLaVOeQDYBXcTnetZZ523PJyDQFqC5qbwYqHGKm6MHVcB.U_VfYxg9qURcY_RqYq35na4QlDUe_YZfm_H2GCWCfLEsaa3sQk3G7GbsdOiTW0FARJ7WJmVamVvt5wdWiAWoMGBU.u17rDKyu597ySAwvIDy7j2rE6RdlSvFNKNqulbdTKVs.Ye6zaWJWxVF6eNZS0na28yCnTvAA_ZjodUrLrXuf.jkKSzn3pLhPYqL2tOEM9fIO2pCN3jNHMD8bgY3Odie_cNbw82tS0uUckB7_glrISI7fvHnQNfTycaIsD77bm7_1kppCkrrEpQ60mDnLXt3TVUozwX9TFytNAMb5Xg4HqPy9q42olofWZzB.aJklnn03T5IvISts9yv0lGnV4xJTBqri9EO4gK5nE0xVt5nONQ7sssJtTFOXJa.rZgp4twgJpSxFrW1k0yTxdzg1NeU_gPEZ_MtdThOKojgoopGnz4FhibMV1hq0J_ceEuCVNXnn5WpEExP4Y7KgUJ58B0zJYdgY1_nADDcoCncXA5Pq.plW2Wet1yQyM7u8HMKZkccuomGNtN.xg',mdrd: '2g1pk53zBXlGV7Z7LUG7g_UgVAj85xCA6K_6LZ9nuUQ-1754448700-1.2.1.1-6z__E0xHxEEWio_eMwF6AGYlpWE7bbF19Cih7v9UffbIktQBrInxPh0BrjsZFWaen1N3_ZR2lMVWTbP5v9WrolNiFpYdtJr7tAtf_HAr4gneSlZeJAjHijO34dgYVi9r5gUFaxlJVbP4AibTO3v_W2VFpUoukLOKy1LJGEXD_PYL.TAbw_raF9fcJAaHbFiPHboqy61JGJw3sy375W8.K_yJbkVXnhAz04yVILbHTFaioTldrHKYrd4tpamJ6XuagounmD_HkaYOQOfYV_PUWBN4.AaSDT._MCIhbQ0McfNo2CavlzOusr7wfgTJUdBYCmPjUW2_LCiwf52mbgjZnwpGY5MkLF5YY1oIHhujqAy23bRwwaFPfXe5tZBL6SG9IPcenB3DOYcIallecG_OamytldKXGZdxLPk8GtYWNHVX1xiwwRWA_Cpk6tPaLWiaSGOozDfX2nvMkTfZy7T5nLFRguP9Rp7zSNpXFvlav6cjdI9lEuH9TgQOsnrP67HA2JdIzw4.T4A78s1ZORaHH0agIjYAW3CAwuN82TcfN55XI0YmuLLs0rAnXxlQlc.ogQe5dxEHcRqUxBOc7OqtwzPfLFWygK2CpXy_4D.LvlwhMo8LL1E7QHrZUOa8fPv8QlUB570OH4td4PpTyAZvm34Sa6X6qItK8R_6aMLBb6oB41mPfNic1sPW5emoC_OzDv4E3lDscKGG8bmDkhDKxrqC5TYN3jihOP9SsLpvdTHX7Jz9O26XhNYLIIc1rHc5C7qQ2w6W7BUCZ3KBBIMAaXu6NNAQtnDBELquL7wmUU.2LVONXo9b_2n_icDrpBxdufHk5xSXZgIMWe4_zu1r6YqqsfGGTzbY8RjZx20xKjJdPUSVAnAxFAEOHQgJiYakXXsFIJ095Rq5drjA0UkB59Vi2.n4sPhju_HVdEdAnVaiW9GOPua3ddT_IrCs.dgJ0mR9lKMxddFrZevDmjAKFtFEsT67HagiwW3XCmJkOxp7S4Gp8U9MuN3nKyDlXAXnidCEjXHayS6c.RdkE64AKKChL7C_eYOVeYaFl8x3G9mmWHzJBN.b4d4CD3ekOgsuilYi_y.yOltn.vO0F_QkbAmTCfGnUx5INpBNRFvsRRzTSvuRT5BYHI1T8aSIf.8A7zzrN8IKOrHpQre6aSoFrumK2H1od4B53kqR7iROuldVeMMu8k7sgC_au2BH03KNGJj6iZlyHao7gPxwfc4QtJx52ubSi0GOUVYY0zJMbWlAD259UMimitjkoO2dAJSOczU1dXEQ8gJQU_YG0GEqQwyFZP_HV_f6U3RbCVjk49g1vaDtKUM1x_N9cf4Huw3DpGbYEyrxGf.PiaEC.CUH9IHUrTUh6bM2Vt.vErZXdH5YpBamD5ntseZSWnJgzNz70OBXV2kcfQsBsFRklEvwimB2PCY7iXBB4voLLyyX5nN6dJOnKTMqu4jc.9FPwKd6mL_fW6Wy6u.LJ6Uyk6AWzfU9kGyf2vDvnknmkCEYmP_7pifOh8hdxuFN3AM3nd89.IKdm0SzDfWxp7TenfeE7BUzkdJWPi03ZwdpJSppv6_Vg5N7ETSHUPsqgE0.EvgA1tMcbay9fLj7N6GTWbqi_fnXRSsTUWlAZkmyQI63htuMzK66ROFC3ublYsH4TuSa8zle1bhewKl33A2k3KDnCff_6IiiyNNN935wSbJXQmEA6hgSDbbNeU8bSp8823mIFF2AumzVvAFxR1bjSApRAfvSkCbiEKXhAqI6wBYdu6w.hAbXiFj.08J1iJFbIiLDoXRArEVC3DZDjrZJxUS1hfFBGJymgwRMxGIoi0qizaQFPyTygEsdUc4_aFcmCFIfdoGn3jhs6KY1ZMoV5PbS.w',};var a = document.createElement('script');a.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=96ab3bdbbea73b4a';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\/nioufoddvtp\/?__cf_chl_rt_tk=vJSWVVRkRXPGDihdcqK8l6d.ILUYaJnhemxPOHRfSZw-1754448700-1.0.1.1-ylHpp7956g2DmVSH8akRI0TzCqr_sRcJaBa9akiVtKE"+ window._cf_chl_opt.cOgUHash);a.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(a);}());</script></body></html>
Home · About · News · Docs · Terms
