import java.util.Scanner;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    double w = sc.nextDouble();
    double h = sc.nextDouble();
    double x = sc.nextDouble();
    double y = sc.nextDouble();
    System.out.println((w*h)/2);
    if((x == w/2)&&(y == h/2)){
      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