import java.util.*;
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();
      double ans = W*H/2.0;
      String met = "0";
      if(W/2.0==x && H/2.0==y){
        met = "1";
      }
      System.out.println(ans+" "+met);
    }
} import java.util.*; util.* java 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();
      double ans = W*H/2.0;
      String met = "0";
      if(W/2.0==x && H/2.0==y){
        met = "1";
      }
      System.out.println(ans+" "+met);
    }
} 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();
      double ans = W*H/2.0;
      String met = "0";
      if(W/2.0==x && H/2.0==y){
        met = "1";
      }
      System.out.println(ans+" "+met);
    } main {
      Scanner sc = new Scanner(System.in);
      double W = sc.nextDouble();
      double H = sc.nextDouble();
      double x = sc.nextDouble();
      double y = sc.nextDouble();
      double ans = W*H/2.0;
      String met = "0";
      if(W/2.0==x && H/2.0==y){
        met = "1";
      }
      System.out.println(ans+" "+met);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) double W = sc.nextDouble(); W sc.nextDouble() sc.nextDouble sc double H = sc.nextDouble(); H sc.nextDouble() sc.nextDouble sc double x = sc.nextDouble(); x sc.nextDouble() sc.nextDouble sc double y = sc.nextDouble(); y sc.nextDouble() sc.nextDouble sc double ans = W*H/2.0; ans W*H/2.0 W*H W H 2.0 String met = "0"; met "0" if(W/2.0==x && H/2.0==y){
        met = "1";
      } W/2.0==x && H/2.0==y W/2.0==x W/2.0 W 2.0 x H/2.0==y H/2.0 H 2.0 y {
        met = "1";
      } met = "1" met "1" System.out.println(ans+" "+met) System.out.println System.out System System.out ans+" "+met ans+" "+met ans " " met String[] args args 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();
      double ans = W*H/2.0;
      String met = "0";
      if(W/2.0==x && H/2.0==y){
        met = "1";
      }
      System.out.println(ans+" "+met);
    }
} 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();
      double ans = W*H/2.0;
      String met = "0";
      if(W/2.0==x && H/2.0==y){
        met = "1";
      }
      System.out.println(ans+" "+met);
    }
} Main
import java.util.*;
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();
      double ans = W*H/2.0;
      String met = "0";
      if(W/2.0==x && H/2.0==y){
        met = "1";
      }
      System.out.println(ans+" "+met);
    }
}