import java.util.*;

public class HashSetExample {
	public static void main(String[] args) {
		Set<Node> nodes = new HashSet<>();
		Node[] nodeArray = new Node[] { new Node("ac", 1, true), 
				new Node("b", 3, false), new Node("ab", 2, true),
				new Node("ba", 10, false), new Node("aa", 65, false), 
				new Node("bb", 5, true), new Node("ca", 1, true) };
		for(Node node : nodeArray) {
			nodes.add(node);
		}
		for(Node node : nodes) {
			System.out.println(node + " " + node.hashCode());
		}
	}
}