// Interface for objects with distance functions
// David Eppstein, UC Irvine, 18 May 1997

import java.lang.*;

public class DistancedObject
{
	public DistancedObject neighbor;	// variables for FastPair
	public double distanceToNeighbor = Double.POSITIVE_INFINITY;

	public double distanceTo(DistancedObject x) {
		return Double.POSITIVE_INFINITY;
	}
}