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


public class convex {

	static int n;
	static PrintWriter w;
	static float[][] ins;
	static float[][] sorted_ins;
	static int dimension=2;
	static int FP;
	static int TP;
	static int N;
	static int P;
	static float Area;
	static String output_name="out2.txt";
	static String filename="in2.txt";
	static int count=0;

	static float[][] RocPoints;
	
	
	public static void main(String args[]){
	}
}