B. Big Vova || Codeforces Round #669 (Div. 2) || CODEFORCES

question link : https://codeforces.com/contest/1407/problem/B code link : https://pastebin.com/dfLGydiJ Telegram channel link : https://t.me/joinchat/QJnEnRxO5seEcniywdbS3w Instagram link : https://www.instagram.com/code_explainer/?hl=en