n: 40 m: 183 packed: 13 density: 0 nodes: 0 solveTime: 920 buildTime: 20 solved: true
{0,16,17}
{1,28,37}
{2,23,35}
{3,34,38}
{4,13,15}
{5,20,21}
{7,12,31}
{8,9,33}
{10,29,39}
{11,14,27}
{18,19,24}
{22,26,36}
{25,30,32}