import java.util.*;

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(), y = sc.nextInt();
		sc.close();
		int ans[] = {1, 0};
		int an = 1;
		if(2 * x == w && 2 * y == h)an = 0;
		double area = 0.0;
		area = (double)h * (double)w / 2.0;
		System.out.println(area + " " + ans[an]);
	}
}

/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