Leak solution link of number C. Bun Lover https://youtu.be/PK27JkDUq58
Incase the cheater delete the video from youtube, for this reason I downloaded and stored it: Link
Some cheater
https://codeforces.me/contest/1822/submission/203341284 (vothikimtrang0610)
https://codeforces.me/contest/1822/submission/203341760 (toriqul07)
https://codeforces.me/contest/1822/submission/203337437 (mishra_729)
https://codeforces.me/contest/1822/submission/203339721 (kmanikanta335)
https://codeforces.me/contest/1822/submission/203337206 (Unpredictable_Coder)
https://codeforces.me/contest/1822/submission/203338592 (NUll_0_ZERO)
https://codeforces.me/contest/1822/submission/203337275 (_Ali2002)
https://codeforces.me/contest/1822/submission/203337979 (vignanchintala)
https://codeforces.me/contest/1822/submission/203339037 (RishabhRawatt)
https://codeforces.me/contest/1822/submission/203340194 (Code_Dactor-lol)
https://codeforces.me/contest/1822/submission/203333829 (mohamed.ramadan__)
https://codeforces.me/contest/1822/submission/203331409 (sachinshinde603eight)
https://codeforces.me/contest/1822/submission/203338800 (Dineshhh)
https://codeforces.me/contest/1822/submission/203343647 (Solarine)
https://codeforces.me/contest/1822/submission/203334186 (uttam_19)
https://codeforces.me/contest/1822/submission/203339585 (pushpakkaloge)
https://codeforces.me/contest/1822/submission/203334269 (Homitha)
https://codeforces.me/contest/1822/submission/203337910 (.0)
https://codeforces.me/contest/1822/submission/203335818 (Zagros901)
https://codeforces.me/contest/1822/submission/203340718 (Mokresh)
https://codeforces.me/contest/1822/submission/203339769 (pineapple_pasta)
https://codeforces.me/contest/1822/submission/203340203 (Soham_794)
https://codeforces.me/contest/1822/submission/203341540 (jubair7)
https://codeforces.me/contest/1822/submission/203336582 (inferno_vn)
https://codeforces.me/contest/1822/submission/203335230 (adavid)
https://codeforces.me/contest/1822/submission/203341418 (Sherif_Mesbah1)
https://codeforces.me/contest/1822/submission/203343130 (Inni_69)
https://codeforces.me/contest/1822/submission/203336411 (mohamed_orfy)
https://codeforces.me/contest/1822/submission/203340288 (LifeIsHere_Code)
https://codeforces.me/contest/1822/submission/203339713 (Sushumna_24)
https://codeforces.me/contest/1822/submission/203335236 (huseinlihuseyn09)
https://codeforces.me/contest/1822/submission/203335179 (SnehaDave)
All of them submit solution after video published in youtube. MikeMirzayanov take action against them.