import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long w=sc.nextInt();
        long h=sc.nextInt();
        long x=sc.nextInt();
        long y=sc.nextInt();
        System.out.print(((double)(w*h)/2.0)+" ");
        System.out.println(x*2==w&&y*2==h?1:0);

    }


} import java.util.*; util.* java public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long w=sc.nextInt();
        long h=sc.nextInt();
        long x=sc.nextInt();
        long y=sc.nextInt();
        System.out.print(((double)(w*h)/2.0)+" ");
        System.out.println(x*2==w&&y*2==h?1:0);

    }


} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long w=sc.nextInt();
        long h=sc.nextInt();
        long x=sc.nextInt();
        long y=sc.nextInt();
        System.out.print(((double)(w*h)/2.0)+" ");
        System.out.println(x*2==w&&y*2==h?1:0);

    } main {
        Scanner sc = new Scanner(System.in);
        long w=sc.nextInt();
        long h=sc.nextInt();
        long x=sc.nextInt();
        long y=sc.nextInt();
        System.out.print(((double)(w*h)/2.0)+" ");
        System.out.println(x*2==w&&y*2==h?1:0);

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

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long w=sc.nextInt();
        long h=sc.nextInt();
        long x=sc.nextInt();
        long y=sc.nextInt();
        System.out.print(((double)(w*h)/2.0)+" ");
        System.out.println(x*2==w&&y*2==h?1:0);

    }


} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long w=sc.nextInt();
        long h=sc.nextInt();
        long x=sc.nextInt();
        long y=sc.nextInt();
        System.out.print(((double)(w*h)/2.0)+" ");
        System.out.println(x*2==w&&y*2==h?1:0);

    }


} Main
import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long w=sc.nextInt();
        long h=sc.nextInt();
        long x=sc.nextInt();
        long y=sc.nextInt();
        System.out.print(((double)(w*h)/2.0)+" ");
        System.out.println(x*2==w&&y*2==h?1:0);

    }


}