Attention!

Your solution 267078236 for the problem 1986F significantly coincides with solutions lajdslkgfjkalsdjlfa/267025497, georgopolgoregopal21/267030036, jayanthk0209/267032667, jatin77/267035175, bdyby10221/267036432, shefalimittal6/267036995, GWBose/267037149, notdilbarsl/267037671, mushashi/267039250, Cos-1/267039698, dgfnbfgnfgn/267040863, Chaganlal_Choudhary/267040927, tanish34/267041055, sudiptag529/267043447, sesky_crocodile/267043851, akshitha_cheruku/267044880, tk750502/267045587, theaayushraman/267046668, temega4478/267046723, slayerr_18/267046791, Rhydem_Kumar/267047282, GoDGaMerS/267048253, delhiiboy_2.0/267048269, shivamsingh987/267048430, copyPasteCoder/267049800, meowmeownigga/267050405, theRealshubham/267051250, shreshy./267051509, saanjhmalik/267051909, random011/267052367, Bcool2004/267053200, 2100031953_klu/267053202, rahulg08092002/267053372, godzilla30/267054185, ads4k/267054527, redDustbin05/267055415, hello_hi_bye/267055968, ankitsharmaa29/267056173, jha.adarshk03/267056374, abhay__joshi__/267056485, Tom_cruise_007/267057472, love_alam/267057660, Hig_B/267058123, galactic_riyal/267059217, mass_eg/267059325, bhaveshpabnani/267059429, pratyushkumar0308/267059577, omomgod/267059604, shriyansh20sinha/267059846, luka_modric2003/267060763, garvit_2004/267060795, Deepak_100_hi/267060825, iiitpractice/267060986, dancelover650/267061452, DontWorryitsMINIAWY/267061481, Outlaw_123/267061744, akarsharcyse12/267061790, Salvatore_Knight/267061960, shivvam2002/267062412, saileo/267062489, shivchoudhary.18/267062524, Nikhil_001/267062676, mad__king/267062792, ayushman_j/267063182, bitZenith/267063229, anshwork5577/267063571, madmax5559/267064072, skull_crusher1/267064259, ChaTTy/267064419, Silver6/267064422, iitp_rakesh/267064853, vipulpawar81077/267065178, pixelpilgrims/267065399, byte_gaurav/267065456, alok.singh_/267065508, sachinkumardbg766/267065553, arke63/267065605, AyushT_cf/267065611, ayushv3435/267066096, shivamiitism1/267066419, AHMED_/267066789, dhruv_codes04/267067111, 93chetanj94/267067252, twin_brain/267067579, sona-355/267067639, ayush5556/267067685, ishanyawhocares/267067814, IT_s_OVER_9000/267067851, ujjwal_145/267068160, Harsh_Vardhan10/267068461, tayari/267068550, monk0707/267068613, sanjivani_/267068699, RohitSUS/267068713, ak1609/267068743, CrazyNotorious/267068754, SeifShaheen/267069046, harshie_/267069280, KASRA_BAHRAMI/267069331, mesrivastava_piyush/267069343, Veda_vyas_Reddy/267069355, adibsiddiqui720/267069513, Aniruddh25/267069605, sakshisharma1234/267069680, narayanrudraveer/267069899, nishanty/267069933, red6855/267069959, yaboii/267070005, GolfRumors/267070105, princeyadav2411/267070245, guptadevesh2004/267070520, noob_ka_alt/267070587, infinity_11/267070613, devo_coder269/267070637, lainaio/267070648, rizzler/267070677, stormbolt_s/267070722, Abhi25jk/267070859, waterfalll/267070928, namy007/267070959, Aam_Aadmi_434/267070969, python_devopover_/267070970, shubhajeet1207/267071026, tareq741/267071027, frosty11/267071085, lwk-0/267071234, Garvit100/267071263, Z_Siddharth/267071308, shiroboyy/267071412, utkarshsahay674/267071431, Th_DominaNt/267071443, beofrosty/267071515, sudhanshu_s1182/267071556, iamsupriyomal/267071612, helli5.tech/267071723, aryantiwari111/267071849, TheLoser./267071912, aryan3939/267071932, long_king/267071983, Adicode/267072063, Symo/267072086, smartone/267072195, p1x3lph4nt0m/267072327, like_rounak/267072417, peter43/267072459, bdbhatt01/267072578, kunal_thakur_/267072608, TITANIUM01/267072704, Yash_Kumar/267072790, harsh0615/267072881, pdg271452/267073039, ALDIJOUR./267073091, ddixit552/267073108, Forget26/267073159, archisha394/267073366, NebulousArchon/267073494, NTsparkle/267073587, insidious08/267073609, trying/267073669, algOrithmeRr/267073933, G.K.T/267073945, aditya.3585/267073962, vahagng/267074089, abdul1mannan/267074223, klu-2100030642/267074245, utsabhaldar/267074350, PhenomSG/267074387, priyanshu9241/267074432, CodeCrusader036/267074436, shannu__me/267074486, satyajit_comder/267074496, anonmousrdp/267074669, shiva_345/267074774, jkasfgha/267074808, stuwupidwjbu/267074913, adityamikun/267075026, Maro/267075046, MaskedMew/267075105, g_rk/267075256, Jai-shri-ram-27/267075296, shivu_coder/267075308, GIVE_UP/267075452, Hansraj_Dewangan/267075701, shibhaditya/267075743, parthahere001x/267075782, kush_codes/267075798, triptiroy/267075820, Yasaswini_Desai/267075943, Ayush_Sharma_iiitl/267075946, ignite_black27/267075973, kaushalbhanderi34/267076019, Padmnabhuno/267076220, ndpro/267076242, firstdeath69690/267076245, croman_77/267076347, Saumy_1/267076414, soujanyaav/267076792, kartikyagupta/267076849, daemon9/267076850, Ansh-Pandey/267076855, AdityaGupta55/267076869, vams1/267077023, vuductrung/267077037, Himanshu138/267077564, _pra_tik_sin_ha/267077590, sudoku_master/267077600, sanskardhyani98/267077656, batman3747/267077830, sudhanshu_sy/267078040, GandFaadke/267078236. 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://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 received this surprising message today. I don't know how did my code get public. I didn't use any online IDE. I have just used the simple graph trick of creating adjaceny list storing and checking time of DFS (Depth-first-search) Traversal (in India, we call it this way), and processing each node to find the minimum discovery time and subtree sizes. I am not sure there's any chance my code can be public anyway, unless there is a system vulnerability. I have submitted the code very early than any other of them so it is no doubt my code is to have a penalty. I don't know what I should do to avoid the penalty. Please check this blog MikeMirzayanov.