import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int R = sc.nextInt();
        System.out.printf("VOLUME = %.3f",(4/3.0)*3.14159*R*R*R);
    }
}

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt(), y = sc.nextInt();
        double code = sc.nextDouble();
        System.out.printf("%d %d %.2f",x , y, code);
    }
}

import java.util.Scanner;

public class Main{

    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt(), y = sc.nextInt();
        System.out.printf("PROD = %d",x*y);
    }


}

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int hours = n/3600;
        n %= 3600;
        int minutes = n/ 60;
        int seconds = n % 60;

        System.out.printf("%d:%d:%d\n",hours,minutes, seconds);
    }
}

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        System.out.println(n);
        System.out.printf("%d nota(s) de R$ 100,00\n",n/100);
        n %= 100;
        System.out.printf("%d nota(s) de R$ 50,00\n",n/50);
        n %= 50;
        System.out.printf("%d nota(s) de R$ 20,00\n",n/20);
        n %= 20;
        System.out.printf("%d nota(s) de R$ 10,00\n",n/10);
        n %= 10;
        System.out.printf("%d nota(s) de R$ 5,00\n",n/5);
        n %= 5;
        System.out.printf("%d nota(s) de R$ 2,00\n",n/2);
        n %= 2;
        System.out.printf("%d nota(s) de R$ 1,00\n",n);
    }
}

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        double x1 = sc.nextDouble(), y1 = sc.nextDouble();
        double x2 = sc.nextDouble(), y2 = sc.nextDouble();
        double dx = x1 - x2;
        double dy = y1 - y2;
        double dist = Math.sqrt(dx * dx + dy * dy);
        System.out.printf("%.4f", dist);
    }
}

import java.util.Scanner;

public class Main{ 
    public static void main(String[] args){
        Scanner sc = new Scanner (System.in);
        int x = sc.nextInt();
        double y = sc.nextDouble();
        System.out.printf("%.3fkm/l",x/y);
    }
}

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int NUMBER = sc.nextInt(), time = sc.nextInt();
        double SALARY = sc.nextDouble();
        System.out.printf("NUMBER = %d",NUMBER);
        System.out.printf("SALARY = U$ %.2f",SALARY);
    }
}

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        double A = sc.nextDouble(),B = sc.nextDouble();
        System.out.printf("MEDIA = %.5f", (A * 3.5 + B * 7.5)/11 );
    }
}

import java.util.Scanner;

public class Main{
    public static void main(String[] args ){
        Scanner sc = new Scanner(System.in);
        double r = sc.nextDouble();
        System.out.printf("A=%.4f\n", r * r * 3.14159);
    }

}