k1 = 1; k2 = 2; k3 = 1; k4 = 1; k5 = 1/5; k6 = 1; k7 = 50; k8 = 50; k9 = 500; k10 = 10; k11 = 50; k12 = 1; k13 = 100; k14 = 1/100; k15 = 50; k16 = 1/2; k17 = 5; k18 = 0; k19 = 1; k20 = 1;