#include <iostream>
using namespace std;

enum FeatureType { Dense = 1, Sparse };

std::ostream& operator<<( std::ostream& os, const FeatureType& ft )
{
   switch(ft)
   {
      case Dense: os << "denseForYou"; break;
      case Sparse: os << "sparseForyou"; break;
   }
   return os;
}

int main() {
	FeatureType ft = Dense; 
	std::cout << ft << std::endl;
	return 0;
}