n: 40 m: 336 packed: 13 density: 0 nodes: 0 solveTime: 4450 buildTime: 70 solved: true
{0,21,31}
{1,13,16}
{2,4,28}
{3,27,38}
{5,9,17}
{6,20,34}
{7,26,37}
{8,15,35}
{10,25,39}
{11,18,24}
{12,14,29}
{22,32,33}
{23,30,36}