#include <iostream>

#include <Eigen/Core>
#include <Eigen/Dense>

using namespace std;
using namespace Eigen;

int main(int argc, char **argv) {
    Matrix<double, 2, 3> matrix;
    matrix << 1, 2, 3, 4, 5, 6;

    cout << matrix << endl;

    VectorXd v = VectorXd::Zero(10);

    cout << v << endl;

    return 0;
}