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();
		
		double a = (w * h) / 2;
		
		System.out.print(a + " ");
		
		if ((w / 2) == x && (h / 2) == y) {
			System.out.print("1");
		} else {
			System.out.print("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();
		
		double a = (w * h) / 2;
		
		System.out.print(a + " ");
		
		if ((w / 2) == x && (h / 2) == y) {
			System.out.print("1");
		} else {
			System.out.print("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();
		
		double a = (w * h) / 2;
		
		System.out.print(a + " ");
		
		if ((w / 2) == x && (h / 2) == y) {
			System.out.print("1");
		} else {
			System.out.print("0");
		}
	} main {
		
		Scanner sc = new Scanner(System.in);
		
		double w = sc.nextDouble();
		double h = sc.nextDouble();
		double x = sc.nextDouble();
		double y = sc.nextDouble();
		
		double a = (w * h) / 2;
		
		System.out.print(a + " ");
		
		if ((w / 2) == x && (h / 2) == y) {
			System.out.print("1");
		} else {
			System.out.print("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 double a = (w * h) / 2; a (w * h) / 2 (w * h) w h 2 System.out.print(a + " ") System.out.print System.out System System.out a + " " a " " if ((w / 2) == x && (h / 2) == y) {
			System.out.print("1");
		} else {
			System.out.print("0");
		} (w / 2) == x && (h / 2) == y (w / 2) == x (w / 2) w 2 x (h / 2) == y (h / 2) h 2 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" 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();
		
		double a = (w * h) / 2;
		
		System.out.print(a + " ");
		
		if ((w / 2) == x && (h / 2) == y) {
			System.out.print("1");
		} else {
			System.out.print("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();
		
		double a = (w * h) / 2;
		
		System.out.print(a + " ");
		
		if ((w / 2) == x && (h / 2) == y) {
			System.out.print("1");
		} else {
			System.out.print("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();
		
		double a = (w * h) / 2;
		
		System.out.print(a + " ");
		
		if ((w / 2) == x && (h / 2) == y) {
			System.out.print("1");
		} else {
			System.out.print("0");
		}
	}	
}
