import java.util.*;
public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int w, h, x, y;
        w = sc.nextInt();
        h = sc.nextInt();
        x = sc.nextInt();
        y = sc.nextInt();
        int b;
        if ((w==x+x) && (h==y+y)) b=1;
        else b = 0;
        System.out.println(String.format("%.6f", (double)w*(double)h/2)+" "+b);
    }
}
/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