n: 40 m: 167 packed: 13 density: 0 nodes: 0 solveTime: 390 buildTime: 20 solved: true
{0,20,21}
{1,4,17}
{2,19,36}
{3,9,15}
{5,22,34}
{6,11,37}
{7,26,32}
{8,16,27}
{10,18,28}
{12,13,23}
{14,25,29}
{24,31,39}
{30,33,38}