I got a message from system stating:

Attention!

Your solution 311098094 for the problem 2075B significantly coincides with solutions shicvar2238/311067519, Gmnixr/311074515, bdyby2010010/311075307, malikhuhuna5/311076374, num_2/311078562, 2740/311083071, arjun.das1462002/311083646, STXRSHIVA/311084509, jayaraj_0304/311084606, ermia158/311084708, F9Devil/311086610, arcadeX/311086968, noyon_1985/311087263, Harshuu_007/311087673, itsumitranjan3/311087809, Half_Gojo/311088350, adw20050204/311088568, uk_024/311089107, Daxal_08/311089686, pratapsingh2005/311089836, Ar3s/311090645, Neer21/311091591, klu2300030455/311091634, khushalcofound/311092179, rajavarapu.avinash/311093192, Fahmy/311093360, Conquerer_of_Jiangly/311093853, amitranjan9708/311094220, EMON_123/311094364, Piyush071/311094366, Vedddaaamsh/311094790, LOL_777/311094968, nallala_vishala/311095218, officialaman460/311095669, raj_00_singh/311096088, Lucky_grinder/311096437, keshav_dubey/311096469, Rapids/311096763, sarthak1221/311096906, 2mato_pota2/311097421, SyntaxSaga/311097654, rayrup123/311098094, El7abal2/311098515, Likhith_Usirikayala/311098707, p_2626/311099244, TheRubicon/311100240, Eren47/311102654, VCB/311102740, akashnath420/311102799, SharathKumarReddy/311103811, jajuparikshit105/311103873, buvan0702/311105479, Chilnosu/311105516, devanshsinha_07/311106989, Moncho/311108308, DaniyalT/311108338, me22b164/311108953, gokulv1900/311109267, yashwanthraju2006/311109522, Dangerous_Pisces/311109881, meghajpatel/311110009, gokulv1905cit/311110497, hcm10hung_nh/311110734, SafaruzzamanShovo_2.0/311111486, DuyNgaDocTon1410/311111641, Itadori-_-Yuji/311111934, bhavya1176/311112972, madhavansb133/311113199, 086ShivamDas/311113268, MitMehta/311113742, PRAJESH14/311114435, i_love_sae/311114544, karan102/311114955, Surya__1234/311116590, yashasksm/311116657, Surya22/311116776, devanshsinha246/311117156, darknight_/311118328, hudai33/311119124, rohit98/311121236, also_hr9/311121250, harshil0810/311121512, pragya_03/311121557, madhava2807/311122263, 2200040322/311122274, asjn155/311122559, shubham_choudhary/311123176, Disha_Jain/311123732, King_lsyuan/311124654, phongisgood/311124758, madhavareddy773/311125447, daucun09/311128472, yashprajapati/311128972, RIJUKR/311129417, swyamk/311129698, MIE360/311129957, DrillEndeavor/311130614, Yash_Thakur/311130820, rahulbhatnagar364/311131026, Nayeem_11720/311131491, saksham2311/311132024, 1chandanAAA/311132386, .AhmedHassan./311133267, bs7079961/311133430, mrLolCode/311134246, kas9k/311135188, Ajay_1621/311135523, kishorguguloth96/311136140, SyedRubad/311136792, Shreyansh_Pandey/311137146, Soumarya_Pal/311137153, Pulkit_Jain7/311137841, BlitzkreigRunner/311137863, Mihi99/311137941, nileshmori7757/311138190, harshulcodes/311138481, adnanosman137/311138744, alok_2004/311139040, raja0132/311139075, ayushjoshi1403/311139131. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://mirror.codeforces.com/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties. In case of repeated violations, your account may be blocked.

I have no idea how it got leaked as I do not know any of these people moreover I do not use ideon. I do use an online compiler https://www.onlinegdb.com/online_c++_compiler not sure if that is what caused this. Can anyone kindly advise me what to do in this situation