import java.util.Collections;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final long W = sc.nextLong();
        final long H = sc.nextLong();
        final long X = sc.nextLong();
        final long Y = sc.nextLong();

        System.out.printf("%f %d\n", W * H / 2.0, 2 * X == W && 2 * Y == H ? 1 : 0);
    }
} import java.util.Collections; Collections java.util import java.util.HashSet; HashSet java.util import java.util.Scanner; Scanner java.util import java.util.Set; Set java.util public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final long W = sc.nextLong();
        final long H = sc.nextLong();
        final long X = sc.nextLong();
        final long Y = sc.nextLong();

        System.out.printf("%f %d\n", W * H / 2.0, 2 * X == W && 2 * Y == H ? 1 : 0);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final long W = sc.nextLong();
        final long H = sc.nextLong();
        final long X = sc.nextLong();
        final long Y = sc.nextLong();

        System.out.printf("%f %d\n", W * H / 2.0, 2 * X == W && 2 * Y == H ? 1 : 0);
    } main {
        Scanner sc = new Scanner(System.in);

        final long W = sc.nextLong();
        final long H = sc.nextLong();
        final long X = sc.nextLong();
        final long Y = sc.nextLong();

        System.out.printf("%f %d\n", W * H / 2.0, 2 * X == W && 2 * Y == H ? 1 : 0);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) final long W = sc.nextLong(); W sc.nextLong() sc.nextLong sc final long H = sc.nextLong(); H sc.nextLong() sc.nextLong sc final long X = sc.nextLong(); X sc.nextLong() sc.nextLong sc final long Y = sc.nextLong(); Y sc.nextLong() sc.nextLong sc System.out.printf("%f %d\n", W * H / 2.0, 2 * X == W && 2 * Y == H ? 1 : 0) System.out.printf System.out System System.out "%f %d\n" W * H / 2.0 W * H W H 2.0 2 * X == W && 2 * Y == H ? 1 : 0 2 * X == W && 2 * Y == H 2 * X == W 2 * X 2 X W 2 * Y == H 2 * Y 2 Y H 1 0 String[] args args public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final long W = sc.nextLong();
        final long H = sc.nextLong();
        final long X = sc.nextLong();
        final long Y = sc.nextLong();

        System.out.printf("%f %d\n", W * H / 2.0, 2 * X == W && 2 * Y == H ? 1 : 0);
    }
} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final long W = sc.nextLong();
        final long H = sc.nextLong();
        final long X = sc.nextLong();
        final long Y = sc.nextLong();

        System.out.printf("%f %d\n", W * H / 2.0, 2 * X == W && 2 * Y == H ? 1 : 0);
    }
} Main
import java.util.Collections;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final long W = sc.nextLong();
        final long H = sc.nextLong();
        final long X = sc.nextLong();
        final long Y = sc.nextLong();

        System.out.printf("%f %d\n", W * H / 2.0, 2 * X == W && 2 * Y == H ? 1 : 0);
    }
}
