k1 = 2;
k2 = 9/10;
k3 = 5/2;
k4 = 3/2;
k5 = 3/5;
k6 = 4/5;
k7 = 1;
k8 = 13/10;
k9 = 3/10;
k10 = 4/5;
k11 = 7/10;
k12 = 49/10;
k13 = 23;
k14 = 9/2;
k15 = 1;