n: 40 m: 561 packed: 13 density: 0 nodes: 0 solveTime: 17810 buildTime: 180 solved: true
{0,17,36}
{1,3,7}
{2,4,10}
{5,16,20}
{6,26,30}
{8,15,39}
{9,14,32}
{11,13,29}
{12,23,34}
{18,21,28}
{22,27,35}
{24,33,37}
{25,31,38}