import java.util.*;

class Main{
 public static void main(String[] args){
   Scanner sc = new Scanner(System.in);
   double W = sc.nextInt();
   double H = sc.nextInt();
   double x = sc.nextInt();
   double y = sc.nextInt();
   
   
   System.out.print(W*H/2);
   if((W/2 == x)&&(H/2 == y)){
   System.out.println(" 1");
   }else{
    System.out.println(" 0"); 
   }
 }
} import java.util.*; util.* java class Main{
 public static void main(String[] args){
   Scanner sc = new Scanner(System.in);
   double W = sc.nextInt();
   double H = sc.nextInt();
   double x = sc.nextInt();
   double y = sc.nextInt();
   
   
   System.out.print(W*H/2);
   if((W/2 == x)&&(H/2 == y)){
   System.out.println(" 1");
   }else{
    System.out.println(" 0"); 
   }
 }
} Main public static void main(String[] args){
   Scanner sc = new Scanner(System.in);
   double W = sc.nextInt();
   double H = sc.nextInt();
   double x = sc.nextInt();
   double y = sc.nextInt();
   
   
   System.out.print(W*H/2);
   if((W/2 == x)&&(H/2 == y)){
   System.out.println(" 1");
   }else{
    System.out.println(" 0"); 
   }
 } main {
   Scanner sc = new Scanner(System.in);
   double W = sc.nextInt();
   double H = sc.nextInt();
   double x = sc.nextInt();
   double y = sc.nextInt();
   
   
   System.out.print(W*H/2);
   if((W/2 == x)&&(H/2 == y)){
   System.out.println(" 1");
   }else{
    System.out.println(" 0"); 
   }
 } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) double W = sc.nextInt(); W sc.nextInt() sc.nextInt sc double H = sc.nextInt(); H sc.nextInt() sc.nextInt sc double x = sc.nextInt(); x sc.nextInt() sc.nextInt sc double y = sc.nextInt(); y sc.nextInt() sc.nextInt sc System.out.print(W*H/2) System.out.print System.out System System.out W*H/2 W*H W H 2 if((W/2 == x)&&(H/2 == y)){
   System.out.println(" 1");
   }else{
    System.out.println(" 0"); 
   } (W/2 == x)&&(H/2 == y) (W/2 == x) W/2 W 2 x (H/2 == y) H/2 H 2 y {
   System.out.println(" 1");
   } System.out.println(" 1") System.out.println System.out System System.out " 1" {
    System.out.println(" 0"); 
   } System.out.println(" 0") System.out.println System.out System System.out " 0" String[] args args
import java.util.*;

class Main{
 public static void main(String[] args){
   Scanner sc = new Scanner(System.in);
   double W = sc.nextInt();
   double H = sc.nextInt();
   double x = sc.nextInt();
   double y = sc.nextInt();
   
   
   System.out.print(W*H/2);
   if((W/2 == x)&&(H/2 == y)){
   System.out.println(" 1");
   }else{
    System.out.println(" 0"); 
   }
 }
}
