import java.util.Scanner;

public class Main{

	public static void main(String... args){
		Scanner scan = new Scanner(System.in);
		
		// input
		long width = scan.nextLong();
		long height = scan.nextLong();
		int x = scan.nextInt();
		int y = scan.nextInt();
		
		double area = (width * height) / 2.0;
		System.out.print(area + " ");
		
		if(x + x == width && y + y == height){
			System.out.println("1");
		} else {
			System.out.println("0");
		}
		
		
	}
}
/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