n: 40 m: 328 packed: 13 density: 0 nodes: 0 solveTime: 2970 buildTime: 60 solved: true
{0,1,20}
{2,9,19}
{3,5,25}
{4,7,12}
{6,18,28}
{8,16,38}
{10,24,31}
{11,37,39}
{13,15,27}
{17,34,36}
{21,29,32}
{22,33,35}
{23,26,30}