k1 = 16/5;
k2 = 1/2;
k3 = 3/10;
k4 = 1000;
k5 = 1200/247;
k6 = 53615828388897/1250000000000;
k7 = 9/10;
k8 = 253232284114507/100000000000000;
k9 = 5317877966404647/10000000000000000;
k10 = 25379134149469/62500000000;
k11 = 69225021197403/250000000000;
k12 = 45937500000000000/51064984612057559;
k13 = 152274804896814/576875176645025;
k14 = 286323500516327592324816080243/442590269802782060784707094080;
k15 = 1;
k16 = 2;
k17 = 245;
k18 = 210;