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();
		int x = sc.nextInt();
		int y = sc.nextInt();

		double ans = W*H/2;

		if (x==W/2 && y==H/2) {
			System.out.println(ans + " 1" );
		}else {
			System.out.println(ans + " 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();
		int x = sc.nextInt();
		int y = sc.nextInt();

		double ans = W*H/2;

		if (x==W/2 && y==H/2) {
			System.out.println(ans + " 1" );
		}else {
			System.out.println(ans + " 0");
		}
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		double W = sc.nextDouble();
		double H= sc.nextDouble();
		int x = sc.nextInt();
		int y = sc.nextInt();

		double ans = W*H/2;

		if (x==W/2 && y==H/2) {
			System.out.println(ans + " 1" );
		}else {
			System.out.println(ans + " 0");
		}
	} main {
		Scanner sc = new Scanner(System.in);
		double W = sc.nextDouble();
		double H= sc.nextDouble();
		int x = sc.nextInt();
		int y = sc.nextInt();

		double ans = W*H/2;

		if (x==W/2 && y==H/2) {
			System.out.println(ans + " 1" );
		}else {
			System.out.println(ans + " 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 int x = sc.nextInt(); x sc.nextInt() sc.nextInt sc int y = sc.nextInt(); y sc.nextInt() sc.nextInt sc double ans = W*H/2; ans W*H/2 W*H W H 2 if (x==W/2 && y==H/2) {
			System.out.println(ans + " 1" );
		}else {
			System.out.println(ans + " 0");
		} x==W/2 && y==H/2 x==W/2 x W/2 W 2 y==H/2 y H/2 H 2 {
			System.out.println(ans + " 1" );
		} System.out.println(ans + " 1" ) System.out.println System.out System System.out ans + " 1" ans " 1" {
			System.out.println(ans + " 0");
		} System.out.println(ans + " 0") System.out.println System.out System System.out ans + " 0" ans " 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();
		int x = sc.nextInt();
		int y = sc.nextInt();

		double ans = W*H/2;

		if (x==W/2 && y==H/2) {
			System.out.println(ans + " 1" );
		}else {
			System.out.println(ans + " 0");
		}
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		double W = sc.nextDouble();
		double H= sc.nextDouble();
		int x = sc.nextInt();
		int y = sc.nextInt();

		double ans = W*H/2;

		if (x==W/2 && y==H/2) {
			System.out.println(ans + " 1" );
		}else {
			System.out.println(ans + " 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();
		int x = sc.nextInt();
		int y = sc.nextInt();

		double ans = W*H/2;

		if (x==W/2 && y==H/2) {
			System.out.println(ans + " 1" );
		}else {
			System.out.println(ans + " 0");
		}
	}
}
