import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Solve s= new Solve();
		s.solve();

	}

}

class Solve{
	 Scanner sc = new Scanner(System.in) ;

	 void solve() {

		 double w = sc.nextDouble();
		 double h = sc.nextDouble();
		 double x = sc.nextDouble();
		 double y = sc.nextDouble();

		double res=w*h/2;
		int ans=0;
		if(w/2==x&&h/2==y) {
			ans=1;
		}
		System.out.print(String.format("%.6f", res));
		System.out.println(" "+ans);




	 }
	 }
/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