Node

import java.util.*;

public class Node {
    public int x;
    public int y;
    public int lastIndex;
    public ArrayList<Node> edges = new ArrayList<Node>();
    public ArrayList<Integer> costs = new ArrayList<Integer>();
    public int outCost;
    public int index;

    public Node(int x, int y) {
        this.x = x;
        this.y = y;
        lastIndex = -1;
    }

    public void add(Node node, int cost) {
        edges.add(node);
        costs.add(cost);
        outCost++;
    }

    public Node getEdge(int i) {
        return edges.get(i);
    }

    public int getEdgesCount() {
        return outCost;
    }

    public void setIndex(int i) {
        index = i;
    }

    public void setLastIndex(int lastIndices) {
        lastIndex = lastIndices;
    }
}