hackerrank

Problem Reference - Hackerrank Problem There are N students in a class. Some of them are friends, while some are not. Their friendship is transitive in nature, i.e., if A is friend of B and B is friend of C, then A is also friend of C. A friend circle is a group of students who are directly or indirectly friends. You are given a N×N−matrix M which consists of characters Y or N. [Read More]