import java.io.*; import java.math.BigInteger; import java.util.*; public class B { String line; StringTokenizer inputParser; BufferedReader is; FileInputStream fstream; DataInputStream in; String FInput=""; void openInput(String file) { if(file==null)is = new BufferedReader(new InputStreamReader(System.in));//stdin else { try{ fstream = new FileInputStream(file); in = new DataInputStream(fstream); is = new BufferedReader(new InputStreamReader(in)); }catch(Exception e) { System.err.println(e); } } } void readNextLine() { try { line = is.readLine(); inputParser = new StringTokenizer(line, " ,\t"); //System.err.println("Input: " + line); } catch (IOException e) { System.err.println("Unexpected IO ERROR: " + e); } catch (NullPointerException e) { line=null; } } long NextLong() { String n = inputParser.nextToken(); long val = Long.parseLong(n); return val; } int NextInt() { String n = inputParser.nextToken(); int val = Integer.parseInt(n); //System.out.println("I read this number: " + val); return val; } double NextDouble() { String n = inputParser.nextToken(); double val = Double.parseDouble(n); //System.out.println("I read this number: " + val); return val; } String NextString() { String n = inputParser.nextToken(); return n; } void closeInput() { try { is.close(); } catch (IOException e) { System.err.println("Unexpected IO ERROR: " + e); } } public static void main(String [] argv) { //String filePath="circles.in"; String filePath=null; if(argv.length>0)filePath=argv[0]; new B(filePath); } public B(String inputFile) { openInput(inputFile); //readNextLine(); int T=1;//NextInt(); StringBuilder sb = new StringBuilder(); for(int t=1; t<=T; t++) { readNextLine(); int N=NextInt(); int [] x = new int[N]; int [] y = new int[N]; for(int i=0; i