import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner obj=new Scanner(System.in);
        double totWork=obj.nextDouble();
        double indRate=obj.nextDouble();
        int num=obj.nextInt();
        double rPerWorker=obj.nextDouble();
        
        if(indRate<=0){
            System.out.println("-1");
        }
        else if(num<0 || rperWorker<0 ){
            System.out.println("-1");
        }else if(totWork<=0){
            System.out.println("Invalid input");
            return;
        }else{
            double op1=totWork/indRate;
            double op2=totWork/(num*rPerWorker);
            System.out.println(op1);
            System.out.println(op2);
        }
        
    }
}