#include <iostream>
using namespace std;
// KRUG
class Krug ()
{
   private:
    float radius;
    const float pi = 3.14;
   public:
    Krug()
    {

    };
    Krug (float r)
    {
        this -> r = radius;
    };
    void set_r (float r)
    {
        this->r = r;
    }
    float get_r()
    {
        return this->r = r;
    }
    double get_plostina()
    {
        return this-> r * this->r * pi;
    };
    double get_perimetar()
    {
        return 2 * this-> r * pi;
    };
    int ednakvi()
    {
        if (get_plostina() == get_perimetar())
            return 1;
        else
            return 0;
    }


    ~Krug()
    {

    };

int main()
{
    float r;
    cin>> r;
    Krug A (r);

    cout << A.get_perimetar;
    cout << A.get_plostina;
    cout<< A.ednakvi;

    A(10);
    return 0;
}