Several solutions for this contest.
AtCoder Regular 099E: Independence
Problem Description: https://arc099.contest.atcoder.jp/tasks/arc099_c This problem is one that requires thoughts on complement graph. The official editorial has done a pretty good job in explanation. Step: Convert into complement graph -> Find characteristic of this graph -> Bipartite graph -> Convert back -> Find minimum roads -> DP #include <iostream> #include <cstring> #include <string> #include <vector> #include […]