USACO Silver 2014 December - Piggy Back

C++

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#include <bits/stdc++.h>
using namespace std;

unordered_map<int, vector<int>> mp;
vector<vector<int>> dist;

// Function to find distance from node s to node ix
void distance(int s, int ix) {
	// Declare a queue to store the node and its distance from start node as a
	// pair

Java

Java Implementation

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import java.io.*;
import java.util.*;

public class PiggyBack {
	static int B, E, P, N, M, A = Integer.MAX_VALUE;
	static List<Integer>[] adj;
	static int[][] dist;
	public static void main(String[] args) throws Exception {
		Kattio io = new Kattio("piggyback");