n: 40 m: 369 packed: 13 density: 0 nodes: 0 solveTime: 7700 buildTime: 80 solved: true
{0,31,37}
{1,21,35}
{2,5,10}
{3,7,15}
{4,32,38}
{6,20,25}
{8,22,30}
{9,16,18}
{11,14,39}
{12,23,26}
{13,17,36}
{19,28,29}
{24,27,34}