import java.util.*;

/**
 * Main
 */
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		Double W = sc.nextDouble();
		Double H = sc.nextDouble();
		Double x = sc.nextDouble();
		Double y = sc.nextDouble();

		System.out.println(W*H/2);

		if(Math.pow((2*x - W),2) < 0.001 && Math.pow((2*y - H),2)<0.001){
			System.out.println(1);
		}else{
			System.out.println(0);
		}

		sc.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