Problem Description There are N robots standing on the ground (Don't know why. Don't know how). Suddenly the sky turns into gray, and lightning storm comes! Unfortunately, one of the robots is stuck by the lightning!So it becomes overladen. Once a ro…
Pseudoforest Time Limit:5000MS Memory Limit:65536KB 64bit IO Format:%I64d & %I64u Submit Status Description In graph theory, a pseudoforest is an undirected graph in which every connected component has at most one cycle. The maximal pseudoforests of…