n: 40 m: 508 packed: 13 density: 0 nodes: 0 solveTime: 54150 buildTime: 150 solved: true
{0,2,4}
{1,3,7}
{5,30,38}
{8,34,39}
{9,28,33}
{10,12,25}
{11,17,36}
{13,18,37}
{14,16,23}
{15,26,29}
{19,20,24}
{21,27,35}
{22,31,32}