import java.util.*;

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

        System.out.printf("%f ",((double)W*(double)H)/2);
        if(2*x==W && 2*y==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