n: 40 m: 543 packed: 13 density: 0 nodes: 0 solveTime: 18300 buildTime: 180 solved: true
{0,6,18}
{1,7,28}
{2,27,30}
{3,5,23}
{4,8,11}
{9,10,26}
{12,35,39}
{13,20,25}
{14,15,29}
{16,19,33}
{17,22,37}
{21,31,32}
{24,34,38}