n: 40 m: 690 packed: 13 density: 0 nodes: 0 solveTime: 72190 buildTime: 270 solved: true
{0,1,8}
{2,7,37}
{3,5,20}
{4,14,24}
{6,9,15}
{11,18,36}
{12,19,33}
{13,16,34}
{17,25,26}
{21,35,39}
{22,30,31}
{23,27,38}
{28,29,32}