void multiply_3x3_matrices(const Matrix3x3 a, const Matrix3x3 b, Matrix3x3 result);
void invert_3x3_matrix(const Matrix3x3 m, Matrix3x3 result);
void print_3x3_matrix(const Matrix3x3 m);
void multiply_3x3_matrices(const Matrix3x3 a, const Matrix3x3 b, Matrix3x3 result);
void invert_3x3_matrix(const Matrix3x3 m, Matrix3x3 result);
void print_3x3_matrix(const Matrix3x3 m);