#include <ws/io.hpp>

using namespace ws;

class Base {
    public:
        Base(){
            io::writeln(Test());
        }
        virtual string Test(){
            return "Base";
        }
};

class Sub: public Base {
    public:
        string Test(){
            return "Sub";
        }
};

int main(){
    Sub test;
    io::writeln(test.Test());
    io::getln();
    return 0;
}