import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        
        Scanner sc = new Scanner(System.in);
        
        double w = Double.parseDouble(sc.next());
        double h = Double.parseDouble(sc.next());
        int x = Integer.parseInt(sc.next());
        int y = Integer.parseInt(sc.next());
        
        double s = w*h/2;
        System.out.print(s);
        
        if((x*2 == w) && (y*2 == h)){
            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