 Zero-weight cycle problem

The Zero-weight cycle problem refers to scenarios in graph theory and algorithms, particularly in the context of finding paths in a weighted directed graph. Specifically, it is often associated with the Bellman-Ford algorithm, which is used to find the shortest paths from a source vertex to all other vertices in a graph that may contain negative weight edges. ### Key Points: 1. **Cycle Definition**: A cycle in a graph is a path that starts and ends at the same vertex.