import java.util.*;
import java.lang.*;

class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        double w = sc.nextDouble();
        double h = sc.nextDouble();
        int x = sc.nextInt();
        int y = sc.nextInt();
        double s = w*h/2.0;
        int e;
        if(x == w/2 && y ==h/2 && w % 2 ==0 && h % 2==0){
            e =1;
        }else{
            e = 0;
        }



        System.out.println(s);
        System.out.println(e);

    }
}
/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