import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		long W = in.nextLong();
		long H = in.nextLong();
		long x = in.nextLong();
		long y = in.nextLong();
		System.out.println(String.format("%.9f", (double) W * H / 2));
		System.out.println(x * 2 == W && y * 2 == H ? 1 : 0);
		in.close();
	}

}
/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