import java.util.Scanner;
public class Main {





    public static double TetragonSquare (){
        System.out.print("Pls write side of tetragon: ");
        Scanner scannerTS = new Scanner(System.in);
        double sideA = scannerTS.nextDouble();
        System.out.println("Tetragon Square = " + Math.pow(sideA, 2));
        return Math.pow(sideA, 2);
    }



    public static double CircleSquare (){
        System.out.println("Pls write value radius: ");
        Scanner scannerRC = new Scanner(System.in);
        double radiusR = scannerRC.nextDouble();
        System.out.println("CircleSquare = " + Math.PI * Math.pow(radiusR, 2));
        return Math.PI * Math.pow(radiusR, 2);
    }
    public static double CircleSquare4 (){

        double FourCirclesSqure = CircleSquare() * 4;
        System.out.println("Square of 4 Circles = " + FourCirclesSqure);
        return FourCirclesSqure;
    }

    public static void result (){


        if(TetragonSquare() / CircleSquare4() >= 1)
            System.out.println("4 круга не достаточно");
        else
            System.out.println("4 круга закрыли квадрат");{
            double circlescountDouble = TetragonSquare()  / CircleSquare();
            int circlecount = (int)Math.ceil(circlescountDouble);
            if(circlecount == 0  && CircleSquare() > TetragonSquare() ) {
                circlecount = 1;
                System.out.println("Для того чтобы закрыть квадрат нужно " + circlecount);
            }


        }
    }


    public static void main(String[] args) {





        result(); //ответ к задаче


    }

}