import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);

		double w = in.nextInt();
		double h = in.nextInt();
		double x = in.nextInt();
		double y = in.nextInt();

		System.out.print(w*h/2 + " ");
		
		if( w/2.0 == x && h/2.0 == y ) {
			System.out.print(1);
		}else {
			System.out.print(0);
		}

		in.close();
	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);

		double w = in.nextInt();
		double h = in.nextInt();
		double x = in.nextInt();
		double y = in.nextInt();

		System.out.print(w*h/2 + " ");
		
		if( w/2.0 == x && h/2.0 == y ) {
			System.out.print(1);
		}else {
			System.out.print(0);
		}

		in.close();
	}
} Main public static void main(String[] args) {
		Scanner in = new Scanner(System.in);

		double w = in.nextInt();
		double h = in.nextInt();
		double x = in.nextInt();
		double y = in.nextInt();

		System.out.print(w*h/2 + " ");
		
		if( w/2.0 == x && h/2.0 == y ) {
			System.out.print(1);
		}else {
			System.out.print(0);
		}

		in.close();
	} main {
		Scanner in = new Scanner(System.in);

		double w = in.nextInt();
		double h = in.nextInt();
		double x = in.nextInt();
		double y = in.nextInt();

		System.out.print(w*h/2 + " ");
		
		if( w/2.0 == x && h/2.0 == y ) {
			System.out.print(1);
		}else {
			System.out.print(0);
		}

		in.close();
	} Scanner in = new Scanner(System.in); in new Scanner(System.in) double w = in.nextInt(); w in.nextInt() in.nextInt in double h = in.nextInt(); h in.nextInt() in.nextInt in double x = in.nextInt(); x in.nextInt() in.nextInt in double y = in.nextInt(); y in.nextInt() in.nextInt in System.out.print(w*h/2 + " ") System.out.print System.out System System.out w*h/2 + " " w*h/2 w*h w h 2 " " if( w/2.0 == x && h/2.0 == y ) {
			System.out.print(1);
		}else {
			System.out.print(0);
		} w/2.0 == x && h/2.0 == y w/2.0 == x w/2.0 w 2.0 x h/2.0 == y h/2.0 h 2.0 y {
			System.out.print(1);
		} System.out.print(1) System.out.print System.out System System.out 1 {
			System.out.print(0);
		} System.out.print(0) System.out.print System.out System System.out 0 in.close() in.close in String[] args args public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);

		double w = in.nextInt();
		double h = in.nextInt();
		double x = in.nextInt();
		double y = in.nextInt();

		System.out.print(w*h/2 + " ");
		
		if( w/2.0 == x && h/2.0 == y ) {
			System.out.print(1);
		}else {
			System.out.print(0);
		}

		in.close();
	}
} public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);

		double w = in.nextInt();
		double h = in.nextInt();
		double x = in.nextInt();
		double y = in.nextInt();

		System.out.print(w*h/2 + " ");
		
		if( w/2.0 == x && h/2.0 == y ) {
			System.out.print(1);
		}else {
			System.out.print(0);
		}

		in.close();
	}
} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);

		double w = in.nextInt();
		double h = in.nextInt();
		double x = in.nextInt();
		double y = in.nextInt();

		System.out.print(w*h/2 + " ");
		
		if( w/2.0 == x && h/2.0 == y ) {
			System.out.print(1);
		}else {
			System.out.print(0);
		}

		in.close();
	}
}