import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here! 
        Scanner sc = new Scanner(System.in);
        int w = sc.nextInt();
        int h = sc.nextInt();
        
        int x = sc.nextInt();
        int y = sc.nextInt();
        
        double ans = 0;
        ans = (double)w * h / 2;
        System.out.print(ans);
        System.out.print(" ");
        if (x * 2 == w && y * 2 == h) {
            System.out.println(1);
        } else {
            System.out.println(0);
        }
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here! 
        Scanner sc = new Scanner(System.in);
        int w = sc.nextInt();
        int h = sc.nextInt();
        
        int x = sc.nextInt();
        int y = sc.nextInt();
        
        double ans = 0;
        ans = (double)w * h / 2;
        System.out.print(ans);
        System.out.print(" ");
        if (x * 2 == w && y * 2 == h) {
            System.out.println(1);
        } else {
            System.out.println(0);
        }
    }
} Main public static void main(String[] args) throws Exception {
        // Your code here! 
        Scanner sc = new Scanner(System.in);
        int w = sc.nextInt();
        int h = sc.nextInt();
        
        int x = sc.nextInt();
        int y = sc.nextInt();
        
        double ans = 0;
        ans = (double)w * h / 2;
        System.out.print(ans);
        System.out.print(" ");
        if (x * 2 == w && y * 2 == h) {
            System.out.println(1);
        } else {
            System.out.println(0);
        }
    } main {
        // Your code here! 
        Scanner sc = new Scanner(System.in);
        int w = sc.nextInt();
        int h = sc.nextInt();
        
        int x = sc.nextInt();
        int y = sc.nextInt();
        
        double ans = 0;
        ans = (double)w * h / 2;
        System.out.print(ans);
        System.out.print(" ");
        if (x * 2 == w && y * 2 == h) {
            System.out.println(1);
        } else {
            System.out.println(0);
        }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int w = sc.nextInt(); w sc.nextInt() sc.nextInt sc int h = sc.nextInt(); h sc.nextInt() sc.nextInt sc int x = sc.nextInt(); x sc.nextInt() sc.nextInt sc int y = sc.nextInt(); y sc.nextInt() sc.nextInt sc double ans = 0; ans 0 ans = (double)w * h / 2 ans (double)w * h / 2 (double)w * h (double)w h 2 System.out.print(ans) System.out.print System.out System System.out ans System.out.print(" ") System.out.print System.out System System.out " " if (x * 2 == w && y * 2 == h) {
            System.out.println(1);
        } else {
            System.out.println(0);
        } x * 2 == w && y * 2 == h x * 2 == w x * 2 x 2 w y * 2 == h y * 2 y 2 h {
            System.out.println(1);
        } System.out.println(1) System.out.println System.out System System.out 1 {
            System.out.println(0);
        } System.out.println(0) System.out.println System.out System System.out 0 String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here! 
        Scanner sc = new Scanner(System.in);
        int w = sc.nextInt();
        int h = sc.nextInt();
        
        int x = sc.nextInt();
        int y = sc.nextInt();
        
        double ans = 0;
        ans = (double)w * h / 2;
        System.out.print(ans);
        System.out.print(" ");
        if (x * 2 == w && y * 2 == h) {
            System.out.println(1);
        } else {
            System.out.println(0);
        }
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here! 
        Scanner sc = new Scanner(System.in);
        int w = sc.nextInt();
        int h = sc.nextInt();
        
        int x = sc.nextInt();
        int y = sc.nextInt();
        
        double ans = 0;
        ans = (double)w * h / 2;
        System.out.print(ans);
        System.out.print(" ");
        if (x * 2 == w && y * 2 == h) {
            System.out.println(1);
        } else {
            System.out.println(0);
        }
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here! 
        Scanner sc = new Scanner(System.in);
        int w = sc.nextInt();
        int h = sc.nextInt();
        
        int x = sc.nextInt();
        int y = sc.nextInt();
        
        double ans = 0;
        ans = (double)w * h / 2;
        System.out.print(ans);
        System.out.print(" ");
        if (x * 2 == w && y * 2 == h) {
            System.out.println(1);
        } else {
            System.out.println(0);
        }
    }
}