In this HackerEarth XYZ Path queries problem solution Given a tree with N nodes (numbered…

In this HackerEarth Water supply problem solution Your country can be represented by N cities…

In this HackerEarth Random Subset on a Tree problem solution You are given a tree…

In this HackerEarth One and only flow problem solution You are given a network of…

In this HackerEarth Connecting the Special nodes problem solution You are given a graph of…

In this HackerEarth Weak nodes problem solution You are given N nodes with the following…