n: 40 m: 491 packed: 13 density: 0 nodes: 0 solveTime: 30410 buildTime: 140 solved: true
{0,13,16}
{1,4,21}
{2,3,17}
{5,6,15}
{8,24,25}
{9,27,37}
{10,29,36}
{11,28,39}
{12,22,31}
{14,19,20}
{18,23,33}
{26,30,38}
{32,34,35}