#include <iostream>

template<int T>
class NumberPrinter
{
   static void print() { std::cout << T << std::endl; }
}

template<>
class NumberPrinter<2>
{
   static void print() { std::cout << "Dois" << std::endl; }
}

void main()
{
    NumberPrinter<2>::print();
    NumberPrinter<4>::print();
}