#include <vector>
#include <iostream>
#include <string>

using namespace std;

int main ()
{
    vector<float> nodes(16);
    vector<std::vector<int>> elements(32);

    string matrix = "1 3 5 7 9\n2 4 6 7 10\n11 13 15 17 19\n12 14 16 18 20\n21 22 23 24 25";
    cout<<matrix;

    for (int i = 0; i < 32; i++)
    {
        vector<int> element;

        if ((i % 2) == 1)
        {
            element.push_back ((i % 8) + i);
            element.push_back (i);
            element.push_back (i);
        }
        else
        {

        }

        elements[i] = element;
    }


    return 0;
}