#include <iostream>
#include <string>
using namespace std;
class IConverter {
public:
    virtual double convertto(double value) = 0;
    virtual double convertfrom(double value) = 0;
};
class Kconverter : public IConverter{
public:
    virtual double convertto(double degrees) override{
        return degrees + 273.15;
    }
    virtual double convertfrom(double kelvin) override{
        return kelvin - 273.25;
    }
};
class FConverter : public IConverter {
public:
    virtual double convertto(double degrees) override{
        return (degrees * 9/5)+32;
    }
    virtual double convertfrom(double far) override{
        return far - (9/5)+32 ;
    }
};
int main(){
    setlocale(LC_ALL, "Russian");

    Kconverter k;
    FConverter f;
    cout << k.convertto(5) << endl;
    cout << f.convertto(5) << endl;
    cout << k.convertfrom(5) << endl;
    cout << f.convertfrom(5) << endl;



return 0;