import java.util.*;

public class Main{
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);
        
        double W = sc.nextDouble();
        double H = sc.nextDouble();
        double x = sc.nextDouble();
        double y = sc.nextDouble();

        System.out.println((W*H) / 2);
        if (((W/x) == 2) && ((H/y) == 2))
            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