n: 40 m: 687 packed: 13 density: 0 nodes: 0 solveTime: 35920 buildTime: 270 solved: true
{0,15,26}
{1,2,7}
{3,25,28}
{4,34,36}
{5,16,20}
{6,12,21}
{8,22,23}
{9,11,37}
{10,35,38}
{13,30,33}
{14,19,39}
{18,29,32}
{24,27,31}