import java.util.Scanner;

public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        double W = sc.nextDouble();
        double H = sc.nextDouble();
        double x = sc.nextDouble();
        double y = sc.nextDouble();

        System.out.print(W*H/2.0);
        System.out.println(" " + ((x==W/2 && y==H/2)? 1:0));
    }
} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        double W = sc.nextDouble();
        double H = sc.nextDouble();
        double x = sc.nextDouble();
        double y = sc.nextDouble();

        System.out.print(W*H/2.0);
        System.out.println(" " + ((x==W/2 && y==H/2)? 1:0));
    }
} Main public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        double W = sc.nextDouble();
        double H = sc.nextDouble();
        double x = sc.nextDouble();
        double y = sc.nextDouble();

        System.out.print(W*H/2.0);
        System.out.println(" " + ((x==W/2 && y==H/2)? 1:0));
    } main {

        Scanner sc = new Scanner(System.in);
        double W = sc.nextDouble();
        double H = sc.nextDouble();
        double x = sc.nextDouble();
        double y = sc.nextDouble();

        System.out.print(W*H/2.0);
        System.out.println(" " + ((x==W/2 && y==H/2)? 1:0));
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) double W = sc.nextDouble(); W sc.nextDouble() sc.nextDouble sc double H = sc.nextDouble(); H sc.nextDouble() sc.nextDouble sc double x = sc.nextDouble(); x sc.nextDouble() sc.nextDouble sc double y = sc.nextDouble(); y sc.nextDouble() sc.nextDouble sc System.out.print(W*H/2.0) System.out.print System.out System System.out W*H/2.0 W*H W H 2.0 System.out.println(" " + ((x==W/2 && y==H/2)? 1:0)) System.out.println System.out System System.out " " + ((x==W/2 && y==H/2)? 1:0) " " ((x==W/2 && y==H/2)? 1:0) (x==W/2 && y==H/2) x==W/2 x W/2 W 2 y==H/2 y H/2 H 2 1 0 String args[] args public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        double W = sc.nextDouble();
        double H = sc.nextDouble();
        double x = sc.nextDouble();
        double y = sc.nextDouble();

        System.out.print(W*H/2.0);
        System.out.println(" " + ((x==W/2 && y==H/2)? 1:0));
    }
} public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        double W = sc.nextDouble();
        double H = sc.nextDouble();
        double x = sc.nextDouble();
        double y = sc.nextDouble();

        System.out.print(W*H/2.0);
        System.out.println(" " + ((x==W/2 && y==H/2)? 1:0));
    }
} Main
import java.util.Scanner;

public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        double W = sc.nextDouble();
        double H = sc.nextDouble();
        double x = sc.nextDouble();
        double y = sc.nextDouble();

        System.out.print(W*H/2.0);
        System.out.println(" " + ((x==W/2 && y==H/2)? 1:0));
    }
}
