import java.util.Scanner;

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

        double w = stdIn.nextInt();
        double h = stdIn.nextInt();
        double x = stdIn.nextInt();
        double y = stdIn.nextInt();

        double ans = w * h / 2;
        System.out.println(ans);
        if (x == w / 2 && y == h / 2)
            System.out.println('1');
        else
            System.out.println('0');
    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz