import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long w = sc.nextInt();
		long h = sc.nextInt();
		long x = sc.nextInt();
		long y = sc.nextInt();
		long area = w * h;
		int multi;

		if (w/2.0 == x && h/2.0 == y ) {
			multi = 1;
		} else {
			multi = 0;
		}

		System.out.println(area / 2.0);

		System.out.println(multi);
	}

}

/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