...ll x_{i}\le 30, x\in N^{*}, \lfloor mx_{i} \rfloor = \lfloor \frac{2}{3}x+xk \rfloor. </math> ...line <math>x = 29</math> and <math>x = 30</math>, which is <math>19 + 20 = 39</math>. There are 2 lattice points on the diagonal, <math>d=2</math>. ...