HPHard test problem (n=20) VIPs solution x*=(0,0,1.71,3.22,1.95,0,0,2.37,0,1.86,1.93,1.18,0,0,0,0.39,1.68,0.36,1.44,1.84)' NCPs solution x*=(0.09,1.31,4.81,23.31,1.12,0,0,22.35,0,12.60,5.50,6.36,0,15.69,0,0,6.16,12.23,4.81,11.94)';