Shortest Tour Returning to Start in a Weighted Graph (TSP Variant)

Given a weighted graph. Starting from node s, you need to make a tour and return to s with minimum total distance, under the problem's visitation requirement (typically visiting every node exactly once or at least once). Compute the minimum total distance. Input First line: n m s Next m lines: u v w Output Print the minimum tour length. Note: The original description is incomplete (e.g., whether all nodes must be visited, graph type, and constraints). The exact solution depends on these missing details.