n: 40 m: 499 packed: 13 density: 0 nodes: 0 solveTime: 14700 buildTime: 140 solved: true
{0,2,12}
{1,3,16}
{4,30,34}
{5,11,17}
{6,37,38}
{7,15,28}
{8,10,21}
{13,26,32}
{14,20,35}
{18,22,24}
{19,33,36}
{23,25,39}
{27,29,31}