import java.io.PrintStream;
import java.util.Scanner;

public class Carpet
{
    public static void main(String[] args)
    {
        PrintStream output = System.out;
        Scanner input = new Scanner(System.in);

        output.print("Enter the diameter of the room : ");
        double diameter = input.nextDouble();
        
        output.print("Enter the price per square meter : ");
        double price = input.nextDouble();
        
        final int CENTS_PER_DOLLAR = 100;
        long priceInCents = Math.round(price * CENTS_PER_DOLLAR);
        
        double radius = 0.5 * diameter;
        double area = Math.PI * radius * radius;
        long areaRoundedUp = (long) Math.ceil(area);
        
        long costInCents = priceInCents * areaRoundedUp;
        long dollars = costInCents / CENTS_PER_DOLLAR;
        long cents = costInCents % CENTS_PER_DOLLAR;
        
        output.printf("Total cost is %d dollars and %d cents%n",
                      dollars, cents);
    }
}