1z = 17915.514559640644;
2y = array1d(1..9, [6, 1, 2, 3, 5, 7, 4, 8, 6]);
3profit = array1d(1..9, [0.491522220553276, 8.745103536739528, 7.229750214004773, 7.54867214430993, 3.067141854920024, 2.508048685377633, 6.921975143901991, 1.434258584026455, 4.4828273373361135E-12]);
4----------
5==========