import java.util.Scanner;

public class Main {
	public static void main(String[] args) {

		double a,b,c,d;

		Scanner sc = new Scanner(System.in);

		a = sc.nextDouble();
		b = sc.nextDouble();
		c = sc.nextDouble();
		d = sc.nextDouble();

		int count = 0;
		double result = a * b /2;

		if (a/2 == c && b/2 == d) {

			count = 1;

		}

		System.out.println(result + " " + count);

	}
}

/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