n: 40 m: 323 packed: 13 density: 0 nodes: 0 solveTime: 3610 buildTime: 60 solved: true
{0,18,23}
{1,11,37}
{2,16,26}
{3,5,15}
{4,12,20}
{6,10,38}
{7,8,14}
{13,27,35}
{17,19,21}
{22,30,31}
{24,33,36}
{25,32,39}
{28,29,34}