#include <sstream>
#include <iostream>
#include <map>
#include <functional>
#include <string>
#include <vector>
#include <memory>

#include <math.h>

class Figure {
private:
    double square;
public:
    Figure() {
        square = 0;
    }
    Figure(double sq) {
        square = sq;
    }
    virtual ~Figure() {}


    virtual double get_square() const {
        return square;
    };

};

class Rectangle : public Figure {
public:
    double edge1, edge2, square;

    virtual double get_square() const {
        return square;
    }

    Rectangle(double e1, double e2) {
        edge1 = e1;
        edge2 = e2;
        square = edge1 * edge2;
    }

    static Rectangle* make(std::string str) {
        double e1, e2;
        sscanf(str.c_str(), "%lf%lf", &e1, &e2);
        return new Rectangle(e1, e2);
    }
};

class Square : public Figure {
public:
    double edge, square;

    virtual double get_square() const {
        return square;
    }

    Square(double e) {
        edge = e;
        square = edge * edge;
    }

    static Square* make(std::string str) {
        double e;
        sscanf(str.c_str(), "%lf", &e);
        return new Square(e);
    }
};

class Circle : public Figure {
public:
    double rad, square;

    virtual double get_square() const {
        return square;
    }

    Circle(double r) {
        rad = r;
        square = M_PI * rad * rad;
    }

    static Circle* make(std::string str) {
        double r;
        sscanf(str.c_str(), "%lf", &r);
        return new Circle(r);
    }
};









class Factory {
public:

    static Factory &factory_instance()
    {
        static Factory inst;
        return inst;
    }

    std::map<std::string, std::function<Figure* (std::string str)>> m = {
        {"R", Rectangle::make},
        {"S", Square::make},
        {"C", Circle::make},
    };
};

int main()
{
    std::string str, type, params;
    std::vector<std::unique_ptr<Figure>> vec;
    Factory &fac = Factory::factory_instance();
    while (std::getline(std::cin, str)) {
        std::istringstream stream(str);
        stream >> type >> params;
        Figure *fig = fac.m[type](params);
        std::unique_ptr<Figure> p(fig);
        vec.push_back(p);
    }
}