/* Exercice 1 */
Q = x^3 - 111*x^2 + 6064*x - 189804;
b = Mod(-5/2*x^2 + 19/2*x -3, Q);

/* Exercice 2 */
L = bnfinit(x^3 - x^2 - 54*x + 169);
u = [0,2,1]~;