Fix some memory leaks

Signed-off-by: wmb <wmb@teknik.io>

main.c

@@ -89,12 +89,9 @@ int main(int argc, char *argv[])
 		while (!solution_voisine(&new_solution, solution_opt))
 			continue; /* do it again */
 
-		/* TODO: Calculer les centres de gravités, les distances moyennes inter-/intra-cluster,
-		 * et faire le reste de l'algorithme */
-
 		if ((f1 = fonction_objective(new_solution)) > f0) {
 			print_solution(new_solution, "optimale trouvée");
-			printf("F(solution) = %f\n", f1);
+			printf("F(solution) = %f (%f%% improvement)\n", f1, fabs((f1 - f0) / f0 * 100.0));
 			free(solution_opt);
 			solution_opt = new_solution;
 			new_solution = NULL;
@@ -102,6 +99,16 @@ int main(int argc, char *argv[])
 		}
 	}
 
+	/* Free solution data */
+	free(solution_opt);
+	free(new_solution);
+
+
+	/* Free benchmark data */
+	for (i = 0; i < (int) N_VECTORS; i++)
+		free(benchmark_data[i]);
+	free(benchmark_data);
+
 	exit(EXIT_SUCCESS);
 }