n: 40 m: 337 packed: 13 density: 0 nodes: 0 solveTime: 6450 buildTime: 70 solved: true
{0,6,31}
{1,4,18}
{2,3,14}
{5,15,25}
{8,16,26}
{9,13,38}
{10,11,30}
{12,33,34}
{17,22,27}
{19,37,39}
{20,21,23}
{24,28,32}
{29,35,36}