n=20000;
m=18;
V=[821, 7422, 458, 500, 200, 430, 530, 239, 3630, 500, 220, 430, 2400, 400, 500, 666, 2521, 3220];
P=[3, 5, 5, 3, 2, 4, 3, 3, 4, 2, 3, 3, 5, 5, 3, 3, 4, 1];