import java.util.*;

public class Main {
  public static void main(String[] args) {
    int  check = 0;
    double rectangle, width, height, point_x, point_y, max_area = 0.0;
    Scanner sc = new Scanner(System.in);
    width = Double.parseDouble(sc.next());
    height = Double.parseDouble(sc.next());
    point_x = Double.parseDouble(sc.next());
    point_y = Double.parseDouble(sc.next());
    rectangle = height * width;
    max_area = rectangle / 2.0;
    if(point_x == width / 2.0 && point_y == height / 2.0) check = 1;
    System.out.println(max_area + " " + check);
  }
}

/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