n: 40 m: 168 packed: 13 density: 0 nodes: 0 solveTime: 370 buildTime: 20 solved: true
{0,7,9}
{1,22,37}
{2,6,23}
{3,32,35}
{4,31,38}
{5,8,16}
{10,15,21}
{11,17,25}
{12,20,29}
{13,14,28}
{18,27,39}
{19,24,26}
{30,33,34}