import java.util.*;
import java.io.*;
import java.awt.*;

public class Earthquake {
	public static void main(String[] args) throws FileNotFoundException {
		Scanner input = new Scanner(new File("cities.txt"));
		int numCities = input.nextInt();
		Point[] cities = new Point[numCities];
		
		DrawingPanel panel = new DrawingPanel(200,200);
		Graphics g = panel.getGraphics();
		for(int i=0; i < numCities; i++) {
			// initialize cities[i]
			int cx = input.nextInt();
			int cy = input.nextInt();
			cities[i] = new Point(cx,cy);
			cities[i].draw(g);
		}
		Scanner console = new Scanner(System.in);
		System.out.print("Epicenter? ");
		int x = console.nextInt();
		int y = console.nextInt();
		Point center = new Point(x,y);
		System.out.print("Radius of impact? ");
		int radius = console.nextInt();
		
		g.setColor(Color.RED);
		for(int i=0; i < numCities; i++) {
		  double dist = cities[i].distance(center);
		  if(dist < radius) {
		    cities[i].draw(g);
		  }
		}
	}
}