n: 40 m: 264 packed: 13 density: 0 nodes: 0 solveTime: 2130 buildTime: 40 solved: true
{0,18,19}
{1,6,9}
{2,7,28}
{3,5,26}
{4,32,38}
{8,24,31}
{10,22,23}
{11,12,35}
{13,20,36}
{15,17,25}
{16,37,39}
{21,29,30}
{27,33,34}