public void afis()
{
Console.WriteLine("\n\t\t\tMATRICE:\n");
mat.afis();
Console.WriteLine("\n\t\t\tSUBIECTI:\n");
foreach (var its in mat.sbj)
{
its.afis();
}
Console.WriteLine("\n\t\t\tOBIECTE:\n");
foreach (var ito in mat.obj)
{
ito.afis();
}
}
