LeetCode 2477: Minimum Fuel Cost to Report to the Capital Solution
Master LeetCode problem 2477 (Minimum Fuel Cost to Report to the Capital), a medium challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.
2477. Minimum Fuel Cost to Report to the Capital
Problem Explanation
Explanation
To find the minimum fuel cost to report to the capital, we can use a depth-first search (DFS) approach starting from the capital city. At each step, we calculate the total fuel cost for all representatives to reach the current city considering the available seats in each car.
- We start from the capital city (city 0) and recursively explore all neighboring cities.
- For each neighbor, we calculate the total fuel cost to reach that city considering the representatives that can share the car.
- We continue this process until we reach all cities.
The time complexity of this approach is O(n), where n is the number of cities in the network. The space complexity is also O(n) for the recursive stack.
Solution Code
class Solution {
public int minFuelCost(int[][] roads, int seats) {
Map<Integer, List<Integer>> graph = new HashMap<>();
for (int[] road : roads) {
graph.computeIfAbsent(road[0], k -> new ArrayList<>()).add(road[1]);
graph.computeIfAbsent(road[1], k -> new ArrayList<>()).add(road[0]);
}
return dfs(0, -1, graph, seats);
}
private int dfs(int city, int parent, Map<Integer, List<Integer>> graph, int seats) {
int totalFuelCost = 0;
for (int neighbor : graph.getOrDefault(city, new ArrayList<>())) {
if (neighbor != parent) {
int childrenFuel = dfs(neighbor, city, graph, seats);
totalFuelCost += (childrenFuel + seats - 1) / seats;
}
}
return totalFuelCost;
}
}Try It Yourself
Loading code editor...
Related LeetCode Problems
Frequently Asked Questions
How to solve LeetCode 2477 (Minimum Fuel Cost to Report to the Capital)?
This page provides optimized solutions for LeetCode problem 2477 (Minimum Fuel Cost to Report to the Capital) in Java, C++, and Python, along with a detailed explanation and an interactive code editor to test your code.
What is the time complexity of LeetCode 2477 (Minimum Fuel Cost to Report to the Capital)?
The time complexity for LeetCode 2477 (Minimum Fuel Cost to Report to the Capital) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.
Can I run code for LeetCode 2477 on DevExCode?
Yes, DevExCode provides an interactive code editor where you can write, test, and run your code for LeetCode 2477 in Java, C++, or Python.