import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int W, H, x, y;
		W = sc.nextInt();
		H = sc.nextInt();
		x = sc.nextInt();
		y = sc.nextInt();

		double ans = (double)W*H/ 2;
		int num = (W == x * 2 && H == y * 2 ) ? 1 : 0;
        System.out.println(String.format("%.10f", ans) + " " + num);
	}
}
/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