public class Cyclic {
	public static void main(String[] args) {
		
	}

	public static boolean isCyclic(Node head) {
		if (head == null || head.next == null) {
			return false;
		}
		Node slow = head;
		Node fast = head.next.next;
		while (slow != null && fast != null && fast.next != null) {
			if (slow.value == fast.value) {
				return true;
			}
		}
		return false;
	}
}