Your method for determining the minimum number of power plants needed in Goodland is efficient and effective. By iteratively identifying the farthest suitable city within a specified range, you ensure thorough coverage while minimizing the number of plants required. This systematic approach, combined with careful consideration of each city's coverage status, guarantees comprehensive coverage. Additionally, the algorithm's ability to detect scenarios where complete coverage cannot be achieved ensures a robust and accurate solution. Overall, your method provides a reliable means for the government of Goodland to strategically deploy power plants and meet the electricity needs of its cities.