n: 40 m: 72 packed: 13 density: 0 nodes: 0 solveTime: 100 buildTime: 10 solved: true
{0,9,28}
{1,34,39}
{2,15,36}
{3,37,38}
{4,26,33}
{5,16,29}
{6,11,14}
{7,13,23}
{8,12,31}
{10,17,22}
{18,25,27}
{19,32,35}
{21,24,30}