n: 40 m: 121 packed: 13 density: 0 nodes: 0 solveTime: 250 buildTime: 10 solved: true
{0,16,21}
{1,25,26}
{2,14,27}
{3,15,33}
{4,9,12}
{5,20,30}
{6,22,28}
{7,11,29}
{8,10,37}
{13,18,32}
{17,23,31}
{19,35,38}
{24,36,39}