n: 40 m: 214 packed: 13 density: 0 nodes: 0 solveTime: 1180 buildTime: 30 solved: true
{0,37,38}
{1,18,20}
{2,12,28}
{3,14,15}
{4,8,31}
{5,9,26}
{6,19,30}
{7,11,32}
{10,13,25}
{16,27,39}
{21,22,34}
{23,29,33}
{24,35,36}