n: 40 m: 309 packed: 13 density: 0 nodes: 0 solveTime: 2440 buildTime: 60 solved: true
{0,21,37}
{1,12,31}
{2,6,15}
{3,34,36}
{4,9,14}
{5,22,39}
{7,10,28}
{8,11,18}
{13,29,35}
{16,25,26}
{17,23,30}
{20,24,38}
{27,32,33}