import java.util.*;
public class Edge {
    Node src;
    Node dst;
    double value;
    public Edge(Node src,Node dst,double value) {
	this.src = src;
	this.dst = dst;
	this.value = value;
    }
    public String toString() {
	return "edge#"+value+"("+src+","+dst+")";
    }
    public static String toString(ArrayList<Edge> v) {
	return toString(v.toArray(new Edge[0]));
    }
    public static String toString(Edge[] a) {
	StringBuilder sb = new StringBuilder();
	sb.append("[");
	for (int i=0; i<a.length; i++) sb.append(a[i] + " ");
	sb.append("]");
	return sb.toString();
    }
}