Codeforces Round 468 Problem D - Peculiar Apple-Tree

Problem Link: http://codeforces.com/contest/931/problem/D Github Link: https://github.com/codereport/Codeforces/blob/master/Round_468_D.cpp Follow me on Github: https://github.com/codereport Follow me on Twitter: https://twitter.com/code_report Follow me on HackerRank: https://www.hackerrank.com/code_report