Codeforces Round 893 (Div. 2) A,B,C,D Editorial

A. Buttons || B. The Walkway || C. Yet Another Permutation Problem || D. Trees and Segments Problem D code:-https://codeforces.com/contest/1858/submission/219014597 contest URL:- https://codeforces.com/contest/1858 codeforces handle:- https://codeforces.com/profile/manitianajay45 linkedin:- https://www.linkedin.com/in/ajay-bhakar-7a14451a2/ #codeforces #cp #cpp #manitianajay45 #893 #codeforces893 #codeforcessolutions #editorial