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

public class Main{
    public static BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
    public static PrintWriter stdOut = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
    public static final int N = 110;
    public static double[][][] f = new double[N][N][N];
    public static int[] x = new int[N];
    public static int[] y = new int[N];
    public static int n;
    public static double getArea(int i, int j, int h) {
        int ax = x[i]; int ay = y[i];
        int bx = x[j]; int by = y[j];
        int cx = x[h]; int cy = y[h];
        return 0.5 * Math.abs((long)(bx - ax) * (cy - ay) - (long)(by - ay) * (cx - ax));
    }
    public static void main(String[] args) throws IOException{
        n = Integer.parseInt(stdIn.readLine());
        for(int i = 0; i < n; i++) {
            String[] sp = stdIn.readLine().split(" ");
            x[i] = Integer.parseInt(sp[0]); y[i] = Integer.parseInt(sp[1]);
        }
        double res = 0;
        for(int k = 2; k < n - 2; k++) {
            for(int i = 0; i < n; i++) {
                for(int j = i + k; j < n; j++) {
                    for(int h = i; h <= j; h++) {
                        f[i][j][k] = Math.max(f[i][j][k], f[i][h][k-1] + getArea(i, j, h));
                        res = Math.max(f[i][j][k], res);
                    }
                }
            }
        }
        stdOut.println(String.format("%.0f", res * 2));
        stdOut.flush();
    }
}