import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long w = sc.nextLong();
		long h = sc.nextLong();
		long x = sc.nextLong();
		long y = sc.nextLong();
		
		double area = w * h / 2.0;
		int mlt = x * 2 == w && y * 2 == h ? 1 : 0;
		System.out.printf("%f %d\n", area, mlt);
		
		sc.close();
	}
}

 import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long w = sc.nextLong();
		long h = sc.nextLong();
		long x = sc.nextLong();
		long y = sc.nextLong();
		
		double area = w * h / 2.0;
		int mlt = x * 2 == w && y * 2 == h ? 1 : 0;
		System.out.printf("%f %d\n", area, mlt);
		
		sc.close();
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long w = sc.nextLong();
		long h = sc.nextLong();
		long x = sc.nextLong();
		long y = sc.nextLong();
		
		double area = w * h / 2.0;
		int mlt = x * 2 == w && y * 2 == h ? 1 : 0;
		System.out.printf("%f %d\n", area, mlt);
		
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);
		long w = sc.nextLong();
		long h = sc.nextLong();
		long x = sc.nextLong();
		long y = sc.nextLong();
		
		double area = w * h / 2.0;
		int mlt = x * 2 == w && y * 2 == h ? 1 : 0;
		System.out.printf("%f %d\n", area, mlt);
		
		sc.close();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) long w = sc.nextLong(); w sc.nextLong() sc.nextLong sc long h = sc.nextLong(); h sc.nextLong() sc.nextLong sc long x = sc.nextLong(); x sc.nextLong() sc.nextLong sc long y = sc.nextLong(); y sc.nextLong() sc.nextLong sc double area = w * h / 2.0; area w * h / 2.0 w * h w h 2.0 int mlt = x * 2 == w && y * 2 == h ? 1 : 0; mlt x * 2 == w && y * 2 == h ? 1 : 0 x * 2 == w && y * 2 == h x * 2 == w x * 2 x 2 w y * 2 == h y * 2 y 2 h 1 0 System.out.printf("%f %d\n", area, mlt) System.out.printf System.out System System.out "%f %d\n" area mlt sc.close() sc.close sc String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long w = sc.nextLong();
		long h = sc.nextLong();
		long x = sc.nextLong();
		long y = sc.nextLong();
		
		double area = w * h / 2.0;
		int mlt = x * 2 == w && y * 2 == h ? 1 : 0;
		System.out.printf("%f %d\n", area, mlt);
		
		sc.close();
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long w = sc.nextLong();
		long h = sc.nextLong();
		long x = sc.nextLong();
		long y = sc.nextLong();
		
		double area = w * h / 2.0;
		int mlt = x * 2 == w && y * 2 == h ? 1 : 0;
		System.out.printf("%f %d\n", area, mlt);
		
		sc.close();
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long w = sc.nextLong();
		long h = sc.nextLong();
		long x = sc.nextLong();
		long y = sc.nextLong();
		
		double area = w * h / 2.0;
		int mlt = x * 2 == w && y * 2 == h ? 1 : 0;
		System.out.printf("%f %d\n", area, mlt);
		
		sc.close();
	}
}


