import java.util.*; 

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;
  		System.out.println(ans);
    
 	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