import java.util.*;
public class Main {

	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		double W = stdIn.nextDouble();
		double H = stdIn.nextDouble();
		double x = stdIn.nextDouble();
		double y = stdIn.nextDouble();
		
		System.out.println(W*H/2);
		
		if(x == W/2 && y == H/2) {
			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