n: 40 m: 656 packed: 13 density: 0 nodes: 0 solveTime: 141640 buildTime: 250 solved: true
{0,15,39}
{1,12,13}
{2,24,35}
{3,4,29}
{5,23,36}
{6,9,34}
{7,25,30}
{10,11,31}
{14,18,26}
{16,19,32}
{17,20,21}
{22,27,33}
{28,37,38}