import java.util.Scanner;

public class Main {

	public static void main(String args[]) {

		Scanner sc = new Scanner(System.in);
		int W = sc.nextInt();
		int H = sc.nextInt();
		int x = sc.nextInt();
		int y = sc.nextInt();

		String s = ((double)x == (double)W/(double)2 &&
					(double)y == (double)H/(double)2) ? "1" : "0";
		double area = (double)W*(double)H/2;
		String a = String.format("%.6f", area);
		System.out.println(a+" "+s);
	}
}

/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