n: 40 m: 462 packed: 13 density: 0 nodes: 0 solveTime: 7690 buildTime: 130 solved: true
{0,19,27}
{1,2,4}
{3,22,33}
{5,6,38}
{7,12,26}
{8,16,21}
{9,35,39}
{10,18,24}
{13,25,29}
{14,17,20}
{15,30,32}
{23,28,36}
{31,34,37}