n: 40 m: 581 packed: 13 density: 0 nodes: 0 solveTime: 51590 buildTime: 190 solved: true
{0,1,15}
{2,7,22}
{3,32,34}
{4,5,6}
{8,28,36}
{9,20,38}
{10,18,23}
{11,12,39}
{13,21,24}
{14,16,27}
{17,29,35}
{19,31,37}
{25,30,33}