n: 40 m: 680 packed: 13 density: 0 nodes: 0 solveTime: 25940 buildTime: 270 solved: true
{0,11,30}
{1,2,39}
{4,35,37}
{5,12,17}
{6,9,33}
{7,15,16}
{8,10,13}
{14,19,31}
{18,25,27}
{20,22,24}
{21,34,38}
{23,26,36}
{28,29,32}