n: 40 m: 391 packed: 13 density: 0 nodes: 0 solveTime: 6490 buildTime: 90 solved: true
{0,2,5}
{1,7,15}
{3,4,16}
{6,8,12}
{9,24,26}
{10,20,33}
{11,21,39}
{13,18,27}
{14,32,35}
{17,19,34}
{22,29,36}
{23,25,30}
{28,37,38}